Teknologisk videncenter - User contributions [en]

Cluster der kan alt/makefile script

2014-10-31T07:57:05Z

Minoo: Created page with "<source lang=cli> CC := g++ CUDACC := /usr/local/cuda-6.5/bin/nvcc LINKER := /usr/local/cuda-6.5/bin/nvcc CCFLAGS := -Wall CUDAFLAGS := -arch sm_21 LINKFLAGS := -link CCSRC := in..."

<source lang=cli>
CC := g++
CUDACC := /usr/local/cuda-6.5/bin/nvcc
LINKER := /usr/local/cuda-6.5/bin/nvcc
CCFLAGS := -Wall
CUDAFLAGS := -arch sm_21
LINKFLAGS := -link
CCSRC := integrateMain.c
CUDASRC := integrate.cu
INC :=
TARGET := integrate

$(TARGET) : $(patsubst %.c, %.o, $(CCSRC)) $(patsubst %.cu, %.o, $(CUDASRC))
$(LINKER) $(LINKFLAGS) -o $@ $^

%.o : %.c $(INC)
$(CC) $(CCFLAGS) -c -o $@ $<

%.o : %.cu $(INC)
$(CUDACC) $(CUDAFLAGS) -c -o $@ $<

clean :
rm -f *.o *~

</source>
{{Source cli}}

Cluster der kan alt

2014-10-31T07:38:54Z

Minoo: /* Udvikling fase 1 */

{{TOCright}}

= Introduktion =

At udvikle et [[Ubuntu]] cluster installationsmetode og implementere den fysisk således at programmer kan afvikles.

= metode =

Installationsmetoden udvikles på [[ESXi]] og implementeres på de fysiske servere.

= Mål =

*En master
*minimum to noder
*automatiseret installation af noder. (Så godt som muligt)
*automatiseret oprettelse af brugere [[LDAP]] eller [[NIS Ubuntu|NIS]]
*[[MPI]]

==Lab environment on local PC==

'''LAST UPDATE AUTUMN 2014 (pre-course edits)''' Comments, corrections and additions welcome! :-)

This lab environment is build upon the virtual platform VMware Workstation and Ubuntu-Server 14.04.1 64Bit (ubuntu-14.04.1-server-amd64.iso) as cluster and nodes OS. Ubuntu server can be downloaded [http://www.ubuntu.com/download/server| here]

This guide will guide you though how to build a virtual Linux/Ubuntu cluster lab environment on your local machine. This environment can later be implemented on the real cluster.

*[[/Oprettelse af master og nodes maskiner|Create master and nodes machine]]
'''Master installation and configuration'''
#[[/Installation af master|Install master]]
#[[/Install DHCP server|Install and configure DHCP server]]
#[[/Install DNS server|Install and configure DNS server]]
#[[/Routing NAT and NIS|Configure Routing, NAT and NIS]]
#[[/PXE and Kickstart|PXE and Kickstart configuration]]
#[[/Configure NFS server, Apt cacher and SSH auto login|Install and configure NFS server, apt-cacher and SSH auto login]]
#[[/Multi Router Traffic Grapher|Install and configure Multi Router Traffic Grapher - MRTG]] - doesn't work properly
#[[/DSH and MPI|Install and configure DSH and OpenMPI]]
#[[/OpenCV|Install and configure OpenCV]]
'''Nodes installation and configuration'''

== Udvikling fase 1 ==

#Installer [[ESXi]]
#[[/Ubuntu Master|Installer Ubuntu Master]]
#[[/DHCP server|Installer og konfigurer DHCP server]]
#[[/DNS Server|Installer og konfigurer DNS server]]
#[[/Routning og NAT|Routening og NAT gennem Master]]
#[[/LDAP eller NIS|LDAP eller NIS til user login på noder]]
#[[/Tilføjelse af ny klient|Tilføjelse af ny klient]]
#[[/PXE installation af noder|PXE installation af noder]]
#[[/NFS Server|NFS Server til netværk shares ]]
#[[/apt-cacher installation|apt-cacher installation]]
#[[/Auto SSH|Auto SSH login på noder uden at skrive pass]]
#[[/Kickstart fil til installation af noder|Kickstart fil til installation af noder]]
#[[/Overvågning med MRTG|Overvågning med MRTG]]
#[[/dsh|Distributed Shell dsh]]
#[[/mpi|Installation af openMPI og MPICH]]
#[[Installation af OpenCV]]
#[[InfiniBand]]

=== Test af head installation på fysisk maskine ===

#[[/Installation af head node|Installation af head node]]
#[[/Installation af CUDA|Installation af CUDA]]
#[http://www.raben.com/content/opencv-installation-ubuntu-1204 Installation of OpenCV]
#[[/makefile script |Makefile]]

== Udvikling fase 2 ==

#Tilpasning af SW og konfigurationsfiler til noder

== Udvikling fase 3 ==

#Installation af [[SAN]]

== Udvikling fase 4 ==

#Installation af fysiske maskiner

= Netværk =

*Qlogic switch
**Telnet eller http: til 172.16.4.11 (username '''admin''' password '''adminpass''')
*3550 Gb switch
**Telnet til 172.16.4.88 password '''cisco'''

= Hastighed =

Infinibands hastighed er 4.38 Gbits/sec

= Harddisk partitionering =

På det rigtige cluster er partitioneringen lavet som følger:

;/
:ext4 5GB
;/tmp
:ext4 10GB
;/var
:ext4 15GB
;/boot
:ext4 2GB
;/usr
:ext4 50GB
;swap
:swap 2xRAM
;/home
:ext4 resterende plads - 10GB

= Links =

*[[Weekend Projekt - Test Cluster]]
*[[NIS Ubuntu]]
*[http://coen.boisestate.edu/ece/files/2013/05/Rasp.-Pi.pdf RPi Cluster] -> [http://www.youtube.com/watch?v=i_r3z1jYHAc YouTube Video]

[[Category:Cluster]]

Cluster der kan alt/Kickstart fil til installation af noder

2014-10-31T07:22:40Z

Minoo: /* Kickstart fil */

*Der skal anvendes en http: server således at noderne kan hente kickstart filen. Anvend for ekempel '''lighttpd'''
<source lang=cli>
sudo apt-get install lighttpd
</source>
*For at lave kickstart filer kan i ''håndlave'' dem i en editor eller anvende '''system-config-kickstart'''

For at bruge '''system-config-kickstart''' skal du installere det med kommando'en
<source lang=cli>
sudo apt-get install system-config-kickstart
</source>

For at du kan bruge '''sytem-config-kickstart''' skal du have installeret Xming på din windows pc. Du kan hente Xming på dette link:
http://sourceforge.net/projects/xming/

==Putty Opsætning==
[[File:Putty-Xming-setup.png|350px]]

==System-config-kickstart==

Kør Kommando'en nedenfor for at starte med at lave din kickstart fil.

<source lang=cli>
system-config-kickstart
</source>
:#så får du et grafisk window pop up til opsætning af en kickstart fil

'''Filenplacering'''
<source lang=cli>
/var/www/ks.cfg
</source>

==Kickstart fil==
<source lang=cli>
#Generated by Kickstart Configurator
#platform=x86

#System language
lang da_DK
#Language modules to install
langsupport da_DK
#System keyboard
keyboard dk
#System mouse
mouse
#System timezone
timezone Europe/Copenhagen
#Root password
rootpw --iscrypted $1$AkUb1qdI$vMYeX3C37RX0pRjBppX7W.
#Initial user
user cluster --fullname "cluster admin" --iscrypted --password $1$9Za4QvWX$AXgp$
#Reboot after installation
reboot
#Use text mode install
text
#Install OS instead of upgrade
install
#Use Web installation
url --url http://mirror.tekkom.dk/ubuntu/
#System bootloader configuration
bootloader --location=mbr
#Clear the Master Boot Record
zerombr yes
#Partition clearing information
clearpart --all --initlabel
#Disk partitioning information
part / --fstype ext4 --size 1024
part /boot --fstype ext4 --size 512
part /home --fstype ext4 --size 1024
part /var --fstype ext4 --size 3072
part /tmp --fstype ext4 --size 3072
part /usr --fstype ext4 --size 5120
part swap --size 1024
#System authorization infomation
auth --useshadow --enablemd5 --enablenis --nisdomain dka.local --nisserver 1$
#Network information
network --bootproto=dhcp --device=eth0
#Firewall configuration
firewall --disabled
#Do not configure the X Window System
skipx
#Package install information
%packages
openssh-server
nmap
ssh
screen
bmon
iperf
bonnie++
lmbench
lm-sensors
snmpd
snmp
build-essential
gcc
openssh-client
nfs-common
mpich2
dsh
portmap
nis
%pre
#!/bin/bash
echo "Pre-installation"
#Hostname, Dette script sætter hostname hvis den kan lave en reverse lookup på fra DNS, hvis DHCP er sat up
IP=$(hostname -I | awk '{print $1}')
Host=$(host $IP | awk '{print $5}' | cut -d '.' -f1)
if test $? == 0
then
echo $Host > /etc/hostname
fi
#Hostname END
%post --nochroot
echo "portmap : 10.0.0.1" >> /target/etc/hosts.allow
echo "ypserver 10.0.0.1" >> /target/etc/yp.conf
perl -pi -w -e 's/\/home/\/home.old/g;' /target/etc/fstab
mkdir /target/mnt/tmp
echo "10.0.0.1:/home /home nfs rw,bg,hard,intr 0 0" >> /target/etc/fstab
echo "10.0.0.1:/script /mnt/tmp/ nfs rw,bg,hard,intr 0 0" >> /target/etc/fstab
/target/etc/init.d/nis restart
</source>

Sådan ser vores gældende Kickstart fil ud
{{Source cli}}
[[Category:Cluster]][[Category:Ubuntu]]

Cluster der kan alt/Routing NAT and NIS

2014-10-30T09:04:33Z

Minoo: /* NAT */

=Routing & NAT=
Configuring NAT (Sharing Internet)

==Start Routing==
For this, we do not need to install anything new. Everything is right there but is currently disabled.

First, edit sysctl.conf

<source lang=cli>
sudo nano /etc/sysctl.conf
</source>
Find this:
<source lang=cli>
net.ipv4.ip_forward=1
</source>
Uncomment it by removing the #. Now forwarding is enabled in the system kernel.

===Start routing without a reboot===
This will enable it without a reboot. Like restart a service
<source lang=cli>
echo 1 > /proc/sys/net/ipv4/ip_forward
</source>

==NAT==
*Before starting with Nat and switch user to sudo su root
This make a NAT rule for post-routing. It sets the eth0 as the output card (The one out to the internet) and sets source to it's own IP through MASQUERADE
<source lang=cli>
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
</source>
Save the iptable so it can be loaded correctly after a reboot/shutdown
<source lang=cli>
iptables-save > /etc/iptables.rules
</source>
===Load the iptables.rules at startup===
Edit the file interfaces
<source lang=cli>
sudo nano /etc/network/interfaces
</source>
Insert these lines to the eth0 interface
<source lang=cli>
pre-up iptables-restore < /etc/iptables.rules
post-down iptables-restore < /etc/iptables.rules
</source>
Like this
<source lang=cli>
# The extended interfaces
auto eth0
iface eth0 inet dhcp
pre-up iptables-restore < /etc/iptables.rules
post-down iptables-restore < /etc/iptables.rules
</source>
Test it out on your other client.

=NIS=

Enter the hosts.allow file
<source lang=cli>
sudo nano /etc/hosts.allow
</source>
Add the following line
<source lang=cli>
portmap ypserv ypbind: 10.0.0.0/255.255.255.0
</source>
Install NIS. You will be prompted for domain name. The domain name is not the DNS-domain name - but a unique name for the nodes and master that share the same information.
*NOTE: It is recommended you install NIS using the VMware console instead of SSH
<source lang=cli>
sudo apt-get install portmap nis
</source>
Enter the nis file
<source lang=cli>
sudo nano /etc/default/nis
</source>
Set the NISSERVER line to
<source lang=cli>
NISSERVER=master
</source>
Enter the yp.conf file
<source lang=cli>
sudo nano /etc/yp.conf
</source>
Add the line
<source lang=cli>
domain dka.local server 127.0.0.1
</source>
Enter the ypserv.securenets file
<source lang=cli>
nano /etc/ypserv.securenets
</source>
Replace the 0.0.0.0 line with the 255.255.255.0 10.0.0.0
<source lang=cli>
0.0.0.0 0.0.0.0

255.255.255.0 10.0.0.0
</source>
Reboot the Yellowpages service so the new configuration can be loaded
<source lang=cli>
service ypserv restart
</source>
==Adding a user==
Efter du har oprettet en ny bruger, '''adduser''' er det nødvendigt at genopbygge nis maps!
<source lang=cli>
root@head:~# <input>make -C /var/yp</input>
make: Går til katalog '/var/yp'
make[1]: Går til katalog '/var/yp/c1.local'
Updating passwd.byname...
Updating passwd.byuid...
Updating netid.byname...
Updating shadow.byname...
make[1]: Forlader katalog '/var/yp/c1.local'
make: Forlader katalog '/var/yp'
</source>
===Script adding user in a Cluster===
The following simple script:
*Add a user on the NIS server.
*Add a ssh key to the users '''/home''' library.
**In this cluster '''/home''' is distributed with [[NFS]] to all nodes. Logon to nodes without entering password
*Rebuilding the NIS database with the new user
<source lang=cli>
#!/bin/bash
echo -e "Adding user to cluster\n"
echo -en "User login name: "
read NAME
adduser $NAME

echo -e "Creating keys"
su $NAME -c "ssh-keygen"
echo -e "Distributing keys"
su $NAME -c "cat /home/$NAME/.ssh/id_rsa.pub >> /home/$NAME/.ssh/authorized_key$
echo -e "Rebuild NIS database"
make -C /var/yp
</source>

{{source cli}}

Cluster der kan alt/Routing NAT and NIS

2014-10-30T09:03:49Z

Minoo: /* NAT */

=Routing & NAT=
Configuring NAT (Sharing Internet)

==Start Routing==
For this, we do not need to install anything new. Everything is right there but is currently disabled.

First, edit sysctl.conf

<source lang=cli>
sudo nano /etc/sysctl.conf
</source>
Find this:
<source lang=cli>
net.ipv4.ip_forward=1
</source>
Uncomment it by removing the #. Now forwarding is enabled in the system kernel.

===Start routing without a reboot===
This will enable it without a reboot. Like restart a service
<source lang=cli>
echo 1 > /proc/sys/net/ipv4/ip_forward
</source>

==NAT==
This make a NAT rule for post-routing. It sets the eth0 as the output card (The one out to the internet) and sets source to it's own IP through MASQUERADE
<source lang=cli>
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
</source>
Save the iptable so it can be loaded correctly after a reboot/shutdown
<source lang=cli>
iptables-save > /etc/iptables.rules
</source>
===Load the iptables.rules at startup===
Edit the file interfaces
<source lang=cli>
sudo nano /etc/network/interfaces
</source>
Insert these lines to the eth0 interface
<source lang=cli>
pre-up iptables-restore < /etc/iptables.rules
post-down iptables-restore < /etc/iptables.rules
</source>
Like this
<source lang=cli>
# The extended interfaces
auto eth0
iface eth0 inet dhcp
pre-up iptables-restore < /etc/iptables.rules
post-down iptables-restore < /etc/iptables.rules
</source>
Test it out on your other client.

=NIS=

Enter the hosts.allow file
<source lang=cli>
sudo nano /etc/hosts.allow
</source>
Add the following line
<source lang=cli>
portmap ypserv ypbind: 10.0.0.0/255.255.255.0
</source>
Install NIS. You will be prompted for domain name. The domain name is not the DNS-domain name - but a unique name for the nodes and master that share the same information.
*NOTE: It is recommended you install NIS using the VMware console instead of SSH
<source lang=cli>
sudo apt-get install portmap nis
</source>
Enter the nis file
<source lang=cli>
sudo nano /etc/default/nis
</source>
Set the NISSERVER line to
<source lang=cli>
NISSERVER=master
</source>
Enter the yp.conf file
<source lang=cli>
sudo nano /etc/yp.conf
</source>
Add the line
<source lang=cli>
domain dka.local server 127.0.0.1
</source>
Enter the ypserv.securenets file
<source lang=cli>
nano /etc/ypserv.securenets
</source>
Replace the 0.0.0.0 line with the 255.255.255.0 10.0.0.0
<source lang=cli>
0.0.0.0 0.0.0.0

255.255.255.0 10.0.0.0
</source>
Reboot the Yellowpages service so the new configuration can be loaded
<source lang=cli>
service ypserv restart
</source>
==Adding a user==
Efter du har oprettet en ny bruger, '''adduser''' er det nødvendigt at genopbygge nis maps!
<source lang=cli>
root@head:~# <input>make -C /var/yp</input>
make: Går til katalog '/var/yp'
make[1]: Går til katalog '/var/yp/c1.local'
Updating passwd.byname...
Updating passwd.byuid...
Updating netid.byname...
Updating shadow.byname...
make[1]: Forlader katalog '/var/yp/c1.local'
make: Forlader katalog '/var/yp'
</source>
===Script adding user in a Cluster===
The following simple script:
*Add a user on the NIS server.
*Add a ssh key to the users '''/home''' library.
**In this cluster '''/home''' is distributed with [[NFS]] to all nodes. Logon to nodes without entering password
*Rebuilding the NIS database with the new user
<source lang=cli>
#!/bin/bash
echo -e "Adding user to cluster\n"
echo -en "User login name: "
read NAME
adduser $NAME

echo -e "Creating keys"
su $NAME -c "ssh-keygen"
echo -e "Distributing keys"
su $NAME -c "cat /home/$NAME/.ssh/id_rsa.pub >> /home/$NAME/.ssh/authorized_key$
echo -e "Rebuild NIS database"
make -C /var/yp
</source>

{{source cli}}

Cluster der kan alt/Routing NAT and NIS

2014-10-30T09:03:14Z

Minoo: /* NAT */

=Routing & NAT=
Configuring NAT (Sharing Internet)

==Start Routing==
For this, we do not need to install anything new. Everything is right there but is currently disabled.

First, edit sysctl.conf

<source lang=cli>
sudo nano /etc/sysctl.conf
</source>
Find this:
<source lang=cli>
net.ipv4.ip_forward=1
</source>
Uncomment it by removing the #. Now forwarding is enabled in the system kernel.

===Start routing without a reboot===
This will enable it without a reboot. Like restart a service
<source lang=cli>
echo 1 > /proc/sys/net/ipv4/ip_forward
</source>

==NAT==
Before starting with Nat and switch user to sudo su root
This make a NAT rule for post-routing. It sets the eth0 as the output card (The one out to the internet) and sets source to it's own IP through MASQUERADE
<source lang=cli>
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
</source>
Save the iptable so it can be loaded correctly after a reboot/shutdown
<source lang=cli>
iptables-save > /etc/iptables.rules
</source>
===Load the iptables.rules at startup===
Edit the file interfaces
<source lang=cli>
sudo nano /etc/network/interfaces
</source>
Insert these lines to the eth0 interface
<source lang=cli>
pre-up iptables-restore < /etc/iptables.rules
post-down iptables-restore < /etc/iptables.rules
</source>
Like this
<source lang=cli>
# The extended interfaces
auto eth0
iface eth0 inet dhcp
pre-up iptables-restore < /etc/iptables.rules
post-down iptables-restore < /etc/iptables.rules
</source>
Test it out on your other client.

=NIS=

Enter the hosts.allow file
<source lang=cli>
sudo nano /etc/hosts.allow
</source>
Add the following line
<source lang=cli>
portmap ypserv ypbind: 10.0.0.0/255.255.255.0
</source>
Install NIS. You will be prompted for domain name. The domain name is not the DNS-domain name - but a unique name for the nodes and master that share the same information.
*NOTE: It is recommended you install NIS using the VMware console instead of SSH
<source lang=cli>
sudo apt-get install portmap nis
</source>
Enter the nis file
<source lang=cli>
sudo nano /etc/default/nis
</source>
Set the NISSERVER line to
<source lang=cli>
NISSERVER=master
</source>
Enter the yp.conf file
<source lang=cli>
sudo nano /etc/yp.conf
</source>
Add the line
<source lang=cli>
domain dka.local server 127.0.0.1
</source>
Enter the ypserv.securenets file
<source lang=cli>
nano /etc/ypserv.securenets
</source>
Replace the 0.0.0.0 line with the 255.255.255.0 10.0.0.0
<source lang=cli>
0.0.0.0 0.0.0.0

255.255.255.0 10.0.0.0
</source>
Reboot the Yellowpages service so the new configuration can be loaded
<source lang=cli>
service ypserv restart
</source>
==Adding a user==
Efter du har oprettet en ny bruger, '''adduser''' er det nødvendigt at genopbygge nis maps!
<source lang=cli>
root@head:~# <input>make -C /var/yp</input>
make: Går til katalog '/var/yp'
make[1]: Går til katalog '/var/yp/c1.local'
Updating passwd.byname...
Updating passwd.byuid...
Updating netid.byname...
Updating shadow.byname...
make[1]: Forlader katalog '/var/yp/c1.local'
make: Forlader katalog '/var/yp'
</source>
===Script adding user in a Cluster===
The following simple script:
*Add a user on the NIS server.
*Add a ssh key to the users '''/home''' library.
**In this cluster '''/home''' is distributed with [[NFS]] to all nodes. Logon to nodes without entering password
*Rebuilding the NIS database with the new user
<source lang=cli>
#!/bin/bash
echo -e "Adding user to cluster\n"
echo -en "User login name: "
read NAME
adduser $NAME

echo -e "Creating keys"
su $NAME -c "ssh-keygen"
echo -e "Distributing keys"
su $NAME -c "cat /home/$NAME/.ssh/id_rsa.pub >> /home/$NAME/.ssh/authorized_key$
echo -e "Rebuild NIS database"
make -C /var/yp
</source>

{{source cli}}

Cluster der kan alt/Routing NAT and NIS

2014-10-30T08:57:21Z

Minoo: /* Start Routing */

=Routing & NAT=
Configuring NAT (Sharing Internet)

==Start Routing==
For this, we do not need to install anything new. Everything is right there but is currently disabled.

First, edit sysctl.conf

<source lang=cli>
sudo nano /etc/sysctl.conf
</source>
Find this:
<source lang=cli>
net.ipv4.ip_forward=1
</source>
Uncomment it by removing the #. Now forwarding is enabled in the system kernel.

===Start routing without a reboot===
This will enable it without a reboot. Like restart a service
<source lang=cli>
echo 1 > /proc/sys/net/ipv4/ip_forward
</source>

==NAT==
This make a NAT rule for post-routing. It sets the eth0 as the output card (The one out to the internet) and sets source to it's own IP through MASQUERADE
<source lang=cli>
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
</source>
Save the iptable so it can be loaded correctly after a reboot/shutdown
<source lang=cli>
iptables-save > /etc/iptables.rules
</source>
===Load the iptables.rules at startup===
Edit the file interfaces
<source lang=cli>
sudo nano /etc/network/interfaces
</source>
Insert these lines to the eth0 interface
<source lang=cli>
pre-up iptables-restore < /etc/iptables.rules
post-down iptables-restore < /etc/iptables.rules
</source>
Like this
<source lang=cli>
# The extended interfaces
auto eth0
iface eth0 inet dhcp
pre-up iptables-restore < /etc/iptables.rules
post-down iptables-restore < /etc/iptables.rules
</source>
Test it out on your other client.

=NIS=

Enter the hosts.allow file
<source lang=cli>
sudo nano /etc/hosts.allow
</source>
Add the following line
<source lang=cli>
portmap ypserv ypbind: 10.0.0.0/255.255.255.0
</source>
Install NIS. You will be prompted for domain name. The domain name is not the DNS-domain name - but a unique name for the nodes and master that share the same information.
*NOTE: It is recommended you install NIS using the VMware console instead of SSH
<source lang=cli>
sudo apt-get install portmap nis
</source>
Enter the nis file
<source lang=cli>
sudo nano /etc/default/nis
</source>
Set the NISSERVER line to
<source lang=cli>
NISSERVER=master
</source>
Enter the yp.conf file
<source lang=cli>
sudo nano /etc/yp.conf
</source>
Add the line
<source lang=cli>
domain dka.local server 127.0.0.1
</source>
Enter the ypserv.securenets file
<source lang=cli>
nano /etc/ypserv.securenets
</source>
Replace the 0.0.0.0 line with the 255.255.255.0 10.0.0.0
<source lang=cli>
0.0.0.0 0.0.0.0

255.255.255.0 10.0.0.0
</source>
Reboot the Yellowpages service so the new configuration can be loaded
<source lang=cli>
service ypserv restart
</source>
==Adding a user==
Efter du har oprettet en ny bruger, '''adduser''' er det nødvendigt at genopbygge nis maps!
<source lang=cli>
root@head:~# <input>make -C /var/yp</input>
make: Går til katalog '/var/yp'
make[1]: Går til katalog '/var/yp/c1.local'
Updating passwd.byname...
Updating passwd.byuid...
Updating netid.byname...
Updating shadow.byname...
make[1]: Forlader katalog '/var/yp/c1.local'
make: Forlader katalog '/var/yp'
</source>
===Script adding user in a Cluster===
The following simple script:
*Add a user on the NIS server.
*Add a ssh key to the users '''/home''' library.
**In this cluster '''/home''' is distributed with [[NFS]] to all nodes. Logon to nodes without entering password
*Rebuilding the NIS database with the new user
<source lang=cli>
#!/bin/bash
echo -e "Adding user to cluster\n"
echo -en "User login name: "
read NAME
adduser $NAME

echo -e "Creating keys"
su $NAME -c "ssh-keygen"
echo -e "Distributing keys"
su $NAME -c "cat /home/$NAME/.ssh/id_rsa.pub >> /home/$NAME/.ssh/authorized_key$
echo -e "Rebuild NIS database"
make -C /var/yp
</source>

{{source cli}}

Cluster der kan alt/Install DNS server

2014-10-30T08:54:34Z

Minoo: /* 5. Create a “rev.0.0.10.in-addr.arpa” file for reverse lookup */

== Install DNS Server ==

Install DNS server
<source lang="text">
sudo apt-get install bind9
</source>

== Configure DNS Server ==

=== 1. Add domain zone ===

Edit /etc/bind/named.conf.local
<source lang="cli">
sudo nano /etc/bind/named.conf.local
</source>
Add the text below to the bottom of the file
<source lang="cli">
# Domain Zone
zone "dka.local." {
type master;
file "/etc/bind/zones/dka.local.db";
};

# For reverse DNS
zone "0.0.10.in-addr.arpa" {
type master;
file "/etc/bind/zones/rev.0.0.10.in-addr.arpa.db";
};
</source>

=== 2. Add DNS servers from your ISP ===

Enter the named.conf.options file
<source lang="cli">
sudo nano /etc/bind/named.conf.options
</source>
Comment out the following lines
<source lang="text">
dnssec-validation auto;

auth-nxdomain no; # conform to RFC1035
listen-on-v6 { any; };
</source>
Add the following to the bottom of the file, just above '};'
<source lang="cli">
forwarders {
172.16.4.77; # Mercantec DNS
};

auth-nxdomain no; # conform to RFC1035
listen-on-v6 { any; };
listen-on { any; };

allow-query { 127.0.0.1; 172.16.4.77/24; 10.0.0.0/24; };
</source>

'''NOTE:''' Be aware of which IP segment you are in. 172.16.4.77 = Hovedforløb 172.16.2.50,172.16.2.51 = Grundforløb

=== 3. Modify the resolv.conf file ===

Edit /etc/resolvconf/resolv.conf.d/base file, and add the following lines. Replace 'dka.local' with your own domain.

<source lang="cli">
nameserver 127.0.0.1
nameserver 10.0.0.1
nameserver 172.16.4.77
domain dka.local
search dka.local
</source>

You may want to lock down the resolv.conf file, making it immutable.

<source lang="cli">
sudo chattr -f +i /etc/resolv.conf
</source>
Any problems with the resolv.conf file, look [http://ubuntuforums.org/showthread.php?t=1978656%7C here]

=== 4. Define zones ===

First make the directory /etc/bind/zones
<source lang="cli">
sudo mkdir /etc/bind/zones
</source>

Second make the file dka.local.db (replace with your own domain)
<source lang="cli">
sudo nano /etc/bind/zones/dka.local.db
</source>

Add the following text to the newly created file <source lang="cli">
; BIND data file for local loopback interface
;
$TTL 604800
@ IN SOA ns.dka.local. root.dka.local. (
8 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
;
@ IN NS ns.dka.local.
ns IN A 10.0.0.1
cluster IN A 10.0.0.1
node1 IN A 10.0.0.11
node2 IN A 10.0.0.12
node3 IN A 10.0.0.13
node4 IN A 10.0.0.14
</source>

'''Note:''' TTL is set for 1 week.

=== 5. Create a “rev.0.0.10.in-addr.arpa.db” file for reverse lookup ===

Create the rev.0.0.10.in-addr.arpa.db file <source lang="cli">
sudo nano /etc/bind/zones/rev.0.0.10.in-addr.arpa.db
</source> Add the following text <source lang="cli">
$TTL 3D
@ IN SOA ns.dka.local. admin.dka.local. (
2007062001
28800
604800
604800
86400
)
IN NS ns.dka.local.
1 IN PTR ns.dka.local.
1 IN PTR cluster.dka.local.
11 IN PTR node1.dka.local.
12 IN PTR node2.dka.local.
13 IN PTR node3.dka.local.
14 IN PTR node4.dka.local.
</source>

=== 6. Verify domain and DNS entries ===

Restart the network service <source lang="cli">
sudo service bind9 restart
</source>

Dig

<source lang="cli">
$ dig dka.local
</source>

Nslookup

<source lang="cli">
nslookup ns
</source> {{Source cli}}

Cluster der kan alt/Install DNS server

2014-10-30T08:53:13Z

Minoo: /* 5. Create a “rev.0.0.10.in-addr.arpa” file for reverse lookup */

== Install DNS Server ==

Install DNS server
<source lang="text">
sudo apt-get install bind9
</source>

== Configure DNS Server ==

=== 1. Add domain zone ===

Edit /etc/bind/named.conf.local
<source lang="cli">
sudo nano /etc/bind/named.conf.local
</source>
Add the text below to the bottom of the file
<source lang="cli">
# Domain Zone
zone "dka.local." {
type master;
file "/etc/bind/zones/dka.local.db";
};

# For reverse DNS
zone "0.0.10.in-addr.arpa" {
type master;
file "/etc/bind/zones/rev.0.0.10.in-addr.arpa.db";
};
</source>

=== 2. Add DNS servers from your ISP ===

Enter the named.conf.options file
<source lang="cli">
sudo nano /etc/bind/named.conf.options
</source>
Comment out the following lines
<source lang="text">
dnssec-validation auto;

auth-nxdomain no; # conform to RFC1035
listen-on-v6 { any; };
</source>
Add the following to the bottom of the file, just above '};'
<source lang="cli">
forwarders {
172.16.4.77; # Mercantec DNS
};

auth-nxdomain no; # conform to RFC1035
listen-on-v6 { any; };
listen-on { any; };

allow-query { 127.0.0.1; 172.16.4.77/24; 10.0.0.0/24; };
</source>

'''NOTE:''' Be aware of which IP segment you are in. 172.16.4.77 = Hovedforløb 172.16.2.50,172.16.2.51 = Grundforløb

=== 3. Modify the resolv.conf file ===

Edit /etc/resolvconf/resolv.conf.d/base file, and add the following lines. Replace 'dka.local' with your own domain.

<source lang="cli">
nameserver 127.0.0.1
nameserver 10.0.0.1
nameserver 172.16.4.77
domain dka.local
search dka.local
</source>

You may want to lock down the resolv.conf file, making it immutable.

<source lang="cli">
sudo chattr -f +i /etc/resolv.conf
</source>
Any problems with the resolv.conf file, look [http://ubuntuforums.org/showthread.php?t=1978656%7C here]

=== 4. Define zones ===

First make the directory /etc/bind/zones
<source lang="cli">
sudo mkdir /etc/bind/zones
</source>

Second make the file dka.local.db (replace with your own domain)
<source lang="cli">
sudo nano /etc/bind/zones/dka.local.db
</source>

Add the following text to the newly created file <source lang="cli">
; BIND data file for local loopback interface
;
$TTL 604800
@ IN SOA ns.dka.local. root.dka.local. (
8 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
;
@ IN NS ns.dka.local.
ns IN A 10.0.0.1
cluster IN A 10.0.0.1
node1 IN A 10.0.0.11
node2 IN A 10.0.0.12
node3 IN A 10.0.0.13
node4 IN A 10.0.0.14
</source>

'''Note:''' TTL is set for 1 week.

=== 5. Create a “rev.0.0.10.in-addr.arpa” file for reverse lookup ===

Create the rev.0.0.10.in-addr.arpa file <source lang="cli">
nano /etc/bind/zones/rev.0.0.10.in-addr.arpa
</source> Add the following text <source lang="cli">
$TTL 3D
@ IN SOA ns.dka.local. admin.dka.local. (
2007062001
28800
604800
604800
86400
)
IN NS ns.dka.local.
1 IN PTR ns.dka.local.
1 IN PTR cluster.dka.local.
11 IN PTR node1.dka.local.
12 IN PTR node2.dka.local.
13 IN PTR node3.dka.local.
14 IN PTR node4.dka.local.
</source>

=== 6. Verify domain and DNS entries ===

Restart the network service <source lang="cli">
sudo service bind9 restart
</source>

Dig

<source lang="cli">
$ dig dka.local
</source>

Nslookup

<source lang="cli">
nslookup ns
</source> {{Source cli}}

Cluster der kan alt/Install DNS server

2014-10-30T08:52:22Z

Minoo: /* 4. Define zones */

== Install DNS Server ==

Install DNS server
<source lang="text">
sudo apt-get install bind9
</source>

== Configure DNS Server ==

=== 1. Add domain zone ===

Edit /etc/bind/named.conf.local
<source lang="cli">
sudo nano /etc/bind/named.conf.local
</source>
Add the text below to the bottom of the file
<source lang="cli">
# Domain Zone
zone "dka.local." {
type master;
file "/etc/bind/zones/dka.local.db";
};

# For reverse DNS
zone "0.0.10.in-addr.arpa" {
type master;
file "/etc/bind/zones/rev.0.0.10.in-addr.arpa.db";
};
</source>

=== 2. Add DNS servers from your ISP ===

Enter the named.conf.options file
<source lang="cli">
sudo nano /etc/bind/named.conf.options
</source>
Comment out the following lines
<source lang="text">
dnssec-validation auto;

auth-nxdomain no; # conform to RFC1035
listen-on-v6 { any; };
</source>
Add the following to the bottom of the file, just above '};'
<source lang="cli">
forwarders {
172.16.4.77; # Mercantec DNS
};

auth-nxdomain no; # conform to RFC1035
listen-on-v6 { any; };
listen-on { any; };

allow-query { 127.0.0.1; 172.16.4.77/24; 10.0.0.0/24; };
</source>

'''NOTE:''' Be aware of which IP segment you are in. 172.16.4.77 = Hovedforløb 172.16.2.50,172.16.2.51 = Grundforløb

=== 3. Modify the resolv.conf file ===

Edit /etc/resolvconf/resolv.conf.d/base file, and add the following lines. Replace 'dka.local' with your own domain.

<source lang="cli">
nameserver 127.0.0.1
nameserver 10.0.0.1
nameserver 172.16.4.77
domain dka.local
search dka.local
</source>

You may want to lock down the resolv.conf file, making it immutable.

<source lang="cli">
sudo chattr -f +i /etc/resolv.conf
</source>
Any problems with the resolv.conf file, look [http://ubuntuforums.org/showthread.php?t=1978656%7C here]

=== 4. Define zones ===

First make the directory /etc/bind/zones
<source lang="cli">
sudo mkdir /etc/bind/zones
</source>

Second make the file dka.local.db (replace with your own domain)
<source lang="cli">
sudo nano /etc/bind/zones/dka.local.db
</source>

Add the following text to the newly created file <source lang="cli">
; BIND data file for local loopback interface
;
$TTL 604800
@ IN SOA ns.dka.local. root.dka.local. (
8 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
;
@ IN NS ns.dka.local.
ns IN A 10.0.0.1
cluster IN A 10.0.0.1
node1 IN A 10.0.0.11
node2 IN A 10.0.0.12
node3 IN A 10.0.0.13
node4 IN A 10.0.0.14
</source>

'''Note:''' TTL is set for 1 week.

=== 5. Create a “rev.0.0.10.in-addr.arpa” file for reverse lookup ===

Create the rev.0.0.10.in-addr.arpa file <source lang="cli">
nano /etc/bind/zones/rev.0.0.10.in-addr.arpa
</source> Add the following text <source lang="cli">
$TTL 3D
@ IN SOA ns.dka.local. admin.dka.local. (
2007062001
28800
604800
604800
86400
)
IN NS ns.dka.local.
1 IN PTR ns.dka.local.
1 IN PTR cluster.dka.local.
10 IN PTR node1.dka.local.
11 IN PTR node2.dka.local.
12 IN PTR node3.dka.local.
13 IN PTR node4.dka.local.
</source>

=== 6. Verify domain and DNS entries ===

Restart the network service <source lang="cli">
sudo service bind9 restart
</source>

Dig

<source lang="cli">
$ dig dka.local
</source>

Nslookup

<source lang="cli">
nslookup ns
</source> {{Source cli}}

Cluster der kan alt/Install DHCP server

2014-10-30T08:50:55Z

Minoo: /* Configure dhcpd.conf */

Cluster der kan alt/Routing NAT and NIS

2014-10-30T08:50:04Z

Minoo: /* NIS */

=Routing & NAT=
Configuring NAT (Sharing Internet)

==Start Routing==
For this, we do not need to install anything new. Everything is right there but is currently disabled.

First, edit sysctl.conf

<source lang=cli>
nano /etc/sysctl.conf
</source>
Find this:
<source lang=cli>
net.ipv4.ip_forward=1
</source>
Uncomment it by removing the #. Now forwarding is enabled in the system kernel.

===Start routing without a reboot===
This will enable it without a reboot. Like restart a service
<source lang=cli>
echo 1 > /proc/sys/net/ipv4/ip_forward
</source>

==NAT==
This make a NAT rule for post-routing. It sets the eth0 as the output card (The one out to the internet) and sets source to it's own IP through MASQUERADE
<source lang=cli>
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
</source>
Save the iptable so it can be loaded correctly after a reboot/shutdown
<source lang=cli>
iptables-save > /etc/iptables.rules
</source>
===Load the iptables.rules at startup===
Edit the file interfaces
<source lang=cli>
sudo nano /etc/network/interfaces
</source>
Insert these lines to the eth0 interface
<source lang=cli>
pre-up iptables-restore < /etc/iptables.rules
post-down iptables-restore < /etc/iptables.rules
</source>
Like this
<source lang=cli>
# The extended interfaces
auto eth0
iface eth0 inet dhcp
pre-up iptables-restore < /etc/iptables.rules
post-down iptables-restore < /etc/iptables.rules
</source>
Test it out on your other client.

=NIS=

Enter the hosts.allow file
<source lang=cli>
sudo nano /etc/hosts.allow
</source>
Add the following line
<source lang=cli>
portmap ypserv ypbind: 10.0.0.0/255.255.255.0
</source>
Install NIS. You will be prompted for domain name. The domain name is not the DNS-domain name - but a unique name for the nodes and master that share the same information.
*NOTE: It is recommended you install NIS using the VMware console instead of SSH
<source lang=cli>
sudo apt-get install portmap nis
</source>
Enter the nis file
<source lang=cli>
sudo nano /etc/default/nis
</source>
Set the NISSERVER line to
<source lang=cli>
NISSERVER=master
</source>
Enter the yp.conf file
<source lang=cli>
sudo nano /etc/yp.conf
</source>
Add the line
<source lang=cli>
domain dka.local server 127.0.0.1
</source>
Enter the ypserv.securenets file
<source lang=cli>
nano /etc/ypserv.securenets
</source>
Replace the 0.0.0.0 line with the 255.255.255.0 10.0.0.0
<source lang=cli>
0.0.0.0 0.0.0.0

255.255.255.0 10.0.0.0
</source>
Reboot the Yellowpages service so the new configuration can be loaded
<source lang=cli>
service ypserv restart
</source>
==Adding a user==
Efter du har oprettet en ny bruger, '''adduser''' er det nødvendigt at genopbygge nis maps!
<source lang=cli>
root@head:~# <input>make -C /var/yp</input>
make: Går til katalog '/var/yp'
make[1]: Går til katalog '/var/yp/c1.local'
Updating passwd.byname...
Updating passwd.byuid...
Updating netid.byname...
Updating shadow.byname...
make[1]: Forlader katalog '/var/yp/c1.local'
make: Forlader katalog '/var/yp'
</source>
===Script adding user in a Cluster===
The following simple script:
*Add a user on the NIS server.
*Add a ssh key to the users '''/home''' library.
**In this cluster '''/home''' is distributed with [[NFS]] to all nodes. Logon to nodes without entering password
*Rebuilding the NIS database with the new user
<source lang=cli>
#!/bin/bash
echo -e "Adding user to cluster\n"
echo -en "User login name: "
read NAME
adduser $NAME

echo -e "Creating keys"
su $NAME -c "ssh-keygen"
echo -e "Distributing keys"
su $NAME -c "cat /home/$NAME/.ssh/id_rsa.pub >> /home/$NAME/.ssh/authorized_key$
echo -e "Rebuild NIS database"
make -C /var/yp
</source>

{{source cli}}

Cluster der kan alt/Routing NAT and NIS

2014-10-30T08:49:12Z

Minoo: /* Load the iptables.rules at startup */

=Routing & NAT=
Configuring NAT (Sharing Internet)

==Start Routing==
For this, we do not need to install anything new. Everything is right there but is currently disabled.

First, edit sysctl.conf

<source lang=cli>
nano /etc/sysctl.conf
</source>
Find this:
<source lang=cli>
net.ipv4.ip_forward=1
</source>
Uncomment it by removing the #. Now forwarding is enabled in the system kernel.

===Start routing without a reboot===
This will enable it without a reboot. Like restart a service
<source lang=cli>
echo 1 > /proc/sys/net/ipv4/ip_forward
</source>

==NAT==
This make a NAT rule for post-routing. It sets the eth0 as the output card (The one out to the internet) and sets source to it's own IP through MASQUERADE
<source lang=cli>
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
</source>
Save the iptable so it can be loaded correctly after a reboot/shutdown
<source lang=cli>
iptables-save > /etc/iptables.rules
</source>
===Load the iptables.rules at startup===
Edit the file interfaces
<source lang=cli>
sudo nano /etc/network/interfaces
</source>
Insert these lines to the eth0 interface
<source lang=cli>
pre-up iptables-restore < /etc/iptables.rules
post-down iptables-restore < /etc/iptables.rules
</source>
Like this
<source lang=cli>
# The extended interfaces
auto eth0
iface eth0 inet dhcp
pre-up iptables-restore < /etc/iptables.rules
post-down iptables-restore < /etc/iptables.rules
</source>
Test it out on your other client.

=NIS=

Enter the hosts.allow file
<source lang=cli>
nano /etc/hosts.allow
</source>
Add the following line
<source lang=cli>
portmap ypserv ypbind: 10.0.0.0/255.255.255.0
</source>
Install NIS. You will be prompted for domain name. The domain name is not the DNS-domain name - but a unique name for the nodes and master that share the same information.
*NOTE: It is recommended you install NIS using the VMware console instead of SSH
<source lang=cli>
apt-get install portmap nis
</source>
Enter the nis file
<source lang=cli>
nano /etc/default/nis
</source>
Set the NISSERVER line to
<source lang=cli>
NISSERVER=master
</source>
Enter the yp.conf file
<source lang=cli>
nano /etc/yp.conf
</source>
Add the line
<source lang=cli>
domain dka.local server 127.0.0.1
</source>
Enter the ypserv.securenets file
<source lang=cli>
nano /etc/ypserv.securenets
</source>
Replace the 0.0.0.0 line with the 255.255.255.0 10.0.0.0
<source lang=cli>
0.0.0.0 0.0.0.0

255.255.255.0 10.0.0.0
</source>
Reboot the Yellowpages service so the new configuration can be loaded
<source lang=cli>
service ypserv restart
</source>
==Adding a user==
Efter du har oprettet en ny bruger, '''adduser''' er det nødvendigt at genopbygge nis maps!
<source lang=cli>
root@head:~# <input>make -C /var/yp</input>
make: Går til katalog '/var/yp'
make[1]: Går til katalog '/var/yp/c1.local'
Updating passwd.byname...
Updating passwd.byuid...
Updating netid.byname...
Updating shadow.byname...
make[1]: Forlader katalog '/var/yp/c1.local'
make: Forlader katalog '/var/yp'
</source>
===Script adding user in a Cluster===
The following simple script:
*Add a user on the NIS server.
*Add a ssh key to the users '''/home''' library.
**In this cluster '''/home''' is distributed with [[NFS]] to all nodes. Logon to nodes without entering password
*Rebuilding the NIS database with the new user
<source lang=cli>
#!/bin/bash
echo -e "Adding user to cluster\n"
echo -en "User login name: "
read NAME
adduser $NAME

echo -e "Creating keys"
su $NAME -c "ssh-keygen"
echo -e "Distributing keys"
su $NAME -c "cat /home/$NAME/.ssh/id_rsa.pub >> /home/$NAME/.ssh/authorized_key$
echo -e "Rebuild NIS database"
make -C /var/yp
</source>

{{source cli}}

Cluster der kan alt/Install DHCP server

2014-10-30T08:37:28Z

Minoo: /* Configure dhcpd.conf */

Cluster der kan alt/Install DHCP server

2014-10-30T08:35:50Z

Minoo: /* Configure dhcpd.conf */

== Install DHCP server ==

Install DHCP server by download and install the DHCP package

<source lang=cli>
sudo apt-get install isc-dhcp-server
</source>

=== Configure dhcpd.conf ===
Ether the dhcp.conf
<source lang=cli>
sudo nano /etc/dhcp/dhcpd.conf
</source>

Uncomment everything and add the following lines at the bottom of the dhcp.conf file. You have to enter the nodes MAC-addresses. This can be added later on, but if you already know the MAC-addresses on the nodes type them in now

<source lang=cli>

default-lease-time 3100; # 51 minutes.
max-lease-time 604800; # 1 week

subnet 10.0.0.0 netmask 255.255.255.0 {
range 10.0.0.11 10.0.0.20;
option routers 10.0.0.1;
option subnet-mask 255.255.255.0;
option broadcast-address 10.0.0.255;
option domain-name-servers 10.0.0.1;
option domain-name "cluster.org";
next-server 10.0.0.1;
filename "pxelinux.0";
}

host node1 {
hardware ethernet 20:CF:30:F1:0B:4D;
fixed-address 10.0.0.11;
}
host node2 {
hardware ethernet 20:CF:30:F0:C6:55;
fixed-address 10.0.0.12;
}

host node3 {
hardware ethernet 20:CF:30:F1:0B:F4;
fixed-address 10.0.0.13;
}
host node4 {
hardware ethernet 20:CF:30:F0:C8:6D;
fixed-address 10.0.0.14;
}

</source>
{{Source cli}}

[[Category:Cluster]]

Cluster der kan alt/Installation af master

2014-10-30T08:34:07Z

Minoo: /* Active /var/log/messages */

=Installation of the master=
==Mount the Ubuntu server .iso file (ubuntu-12.04.3-server-amd64.iso)==
#Step: Click '''CD/DVD''' under the devices menu under '''Cluster_Master'''
#Step: Marker '''Use ISO image file''' and browse the iso file. Click '''OK''' to finish
#Step: Click '''Power on this virtual machine''' to start the machine
== Install Ubuntu server ==

#Step: Choose Language (English)
#Step: Click '''Install Ubuntu Server'''
#Step: Select a language (English)
#Step: Select your location (Denmark)
#Step: Configure locales (en_US.UTF-8)
#Step: Configure the keyboard choose '''yes''' and follow the guide
#Step: Enter the hostname (Master)
#Step: Enter the full name (Cluster)
#Step: Username (cluster)
#Step: Password (cluster)
#Step: Use weak password, choose '''yes'''
#Step: Encrypt the home directory, choose '''No'''
#Step: Configure the clock, Europe/Copenhagen, choose '''yes'''
#Step: Partition disk , choose '''manual'''
#Step: Choose the virtual hard drive: '''21,5 GB VMware, VMware Virtual S'''
#Step: Create new empty partition table on this device, choose '''yes'''
#Step: Choose '''pri/log 17,2 GB FREE SPACE'''
#Step: Create the different partions as listed below:
Size: '''1GB''',      Partion type: '''Primary'''     Mounting point: '''/'''
Size: '''512MB''',    Partion type: '''Logical'''     Mounting point: '''/boot'''
Size: '''3GB''',      Partion type: '''Logical'''     Mounting point: '''/var'''
Size: '''3GB''',      Partion type: '''Logical'''     Mounting point: '''/tmp'''
Size: '''5GB''',      Partion type: '''Logical'''     Mounting point: '''/usr'''
Size: '''1GB''',      Partion type: '''Logical'''     Mounting point: '''/srv'''
Size: '''1GB''',      Partion type: '''Logical'''     Mounting point: '''/home'''
Size: '''1GB''',      Partion type: '''Logical'''     '''Swap Area'''
#Step: Choose '''Finish partitioning and write changes to disk''' when you are finish
#Step: Write the change to disk, choose '''yes'''
#Step: HTTP proxy should be blank
#Step: Choose '''No automatic updates'''
#Step: Choose software to install, mark '''OpenSSH server''' and '''DNS server'''
#Step: Install GRUB boot loader, choose '''yes'''
#Step: Finish the installation, choose '''Continue''', the virtual machine will automatic unmount the iso file

==Assign root permission to the cluster user==

Enter the passwd file by:
<source lang=cli>
sudo nano /etc/passwd
</source>
Change the cluster line in the bottom of the file from:
<source lang=cli>
cluster:x:1000:1000:Cluster,,,:/home/cluster:/bin/bash
</source>
To:
<source lang=cli>
cluster:x:0:0:Cluster,,,:/home/cluster:/bin/bash
</source>
You have to logout before the changes can take effect
<source lang=cli>
logout
</source>
Enter the sudoers file
<source lang=cli>
sudo nano /etc/sudoers
</source>
Add the cluster user below the root user
<source lang=cli>
root ALL=(ALL:ALL) ALL
username ALL=(ALL:ALL) ALL
</source>

==Login via SSH==
Manage the server from SSH is a huge benefit because it will enable the copy/paste feature

Open a terminal software, like Putty or TeraTerm

Enter the server IP address and use the cluster/cluster for login

==Update the system==
First search after updates
<source lang=cli>
sudo apt-get update
</source>
Second install the updates. -y = yes to all (unattenuated install)
<source lang=cli>
sudo apt-get upgrade -y
</source>

==Active the secondary network card(eth1)==
Add a new network card i Vmware
Right-click on Cluster_Master>Settings>Add>Network Adapter>Next>Host-Only>Finish
Enter the network card file
<source lang=cli>
sudo nano /etc/network/interfaces
</source>
Add this at the bottum of the file (after eth0)
<source lang=cli>
# The secondary network interface
auto eth1
iface eth1 inet static
address 10.0.0.1
netmask 255.255.255.0
</source>
Restart the network servise
<source lang=cli>
sudo /etc/init.d/networking restart
</source>
To verify the activation use
<source lang=cli>
ip addr
</source>

==Active /var/log/messages==
Edit 50-default.conf
<source lang=cli>
sudo nano /etc/rsyslog.d/50-default.conf
</source>
Uncomment the lines
<source lang=cli>
*.=info;*.=notice;*.=warn;\
auth,authpriv.none;\
cron,daemon.none;\
mail,news.none -/var/log/messages
</source>
Then restart the rsyslog daemon:
<source lang=cli>
sudo service rsyslog restart
</source>
Or reboot the entire system
<source lang=cli>
sudo reboot
</source>
{{Source cli}}

Cluster der kan alt/Installation af master

2014-10-30T08:33:19Z

Minoo: /* Active the secondary network card(eth1) */

=Installation of the master=
==Mount the Ubuntu server .iso file (ubuntu-12.04.3-server-amd64.iso)==
#Step: Click '''CD/DVD''' under the devices menu under '''Cluster_Master'''
#Step: Marker '''Use ISO image file''' and browse the iso file. Click '''OK''' to finish
#Step: Click '''Power on this virtual machine''' to start the machine
== Install Ubuntu server ==

#Step: Choose Language (English)
#Step: Click '''Install Ubuntu Server'''
#Step: Select a language (English)
#Step: Select your location (Denmark)
#Step: Configure locales (en_US.UTF-8)
#Step: Configure the keyboard choose '''yes''' and follow the guide
#Step: Enter the hostname (Master)
#Step: Enter the full name (Cluster)
#Step: Username (cluster)
#Step: Password (cluster)
#Step: Use weak password, choose '''yes'''
#Step: Encrypt the home directory, choose '''No'''
#Step: Configure the clock, Europe/Copenhagen, choose '''yes'''
#Step: Partition disk , choose '''manual'''
#Step: Choose the virtual hard drive: '''21,5 GB VMware, VMware Virtual S'''
#Step: Create new empty partition table on this device, choose '''yes'''
#Step: Choose '''pri/log 17,2 GB FREE SPACE'''
#Step: Create the different partions as listed below:
Size: '''1GB''',      Partion type: '''Primary'''     Mounting point: '''/'''
Size: '''512MB''',    Partion type: '''Logical'''     Mounting point: '''/boot'''
Size: '''3GB''',      Partion type: '''Logical'''     Mounting point: '''/var'''
Size: '''3GB''',      Partion type: '''Logical'''     Mounting point: '''/tmp'''
Size: '''5GB''',      Partion type: '''Logical'''     Mounting point: '''/usr'''
Size: '''1GB''',      Partion type: '''Logical'''     Mounting point: '''/srv'''
Size: '''1GB''',      Partion type: '''Logical'''     Mounting point: '''/home'''
Size: '''1GB''',      Partion type: '''Logical'''     '''Swap Area'''
#Step: Choose '''Finish partitioning and write changes to disk''' when you are finish
#Step: Write the change to disk, choose '''yes'''
#Step: HTTP proxy should be blank
#Step: Choose '''No automatic updates'''
#Step: Choose software to install, mark '''OpenSSH server''' and '''DNS server'''
#Step: Install GRUB boot loader, choose '''yes'''
#Step: Finish the installation, choose '''Continue''', the virtual machine will automatic unmount the iso file

==Assign root permission to the cluster user==

Enter the passwd file by:
<source lang=cli>
sudo nano /etc/passwd
</source>
Change the cluster line in the bottom of the file from:
<source lang=cli>
cluster:x:1000:1000:Cluster,,,:/home/cluster:/bin/bash
</source>
To:
<source lang=cli>
cluster:x:0:0:Cluster,,,:/home/cluster:/bin/bash
</source>
You have to logout before the changes can take effect
<source lang=cli>
logout
</source>
Enter the sudoers file
<source lang=cli>
sudo nano /etc/sudoers
</source>
Add the cluster user below the root user
<source lang=cli>
root ALL=(ALL:ALL) ALL
username ALL=(ALL:ALL) ALL
</source>

==Login via SSH==
Manage the server from SSH is a huge benefit because it will enable the copy/paste feature

Open a terminal software, like Putty or TeraTerm

Enter the server IP address and use the cluster/cluster for login

==Update the system==
First search after updates
<source lang=cli>
sudo apt-get update
</source>
Second install the updates. -y = yes to all (unattenuated install)
<source lang=cli>
sudo apt-get upgrade -y
</source>

==Active the secondary network card(eth1)==
Add a new network card i Vmware
Right-click on Cluster_Master>Settings>Add>Network Adapter>Next>Host-Only>Finish
Enter the network card file
<source lang=cli>
sudo nano /etc/network/interfaces
</source>
Add this at the bottum of the file (after eth0)
<source lang=cli>
# The secondary network interface
auto eth1
iface eth1 inet static
address 10.0.0.1
netmask 255.255.255.0
</source>
Restart the network servise
<source lang=cli>
sudo /etc/init.d/networking restart
</source>
To verify the activation use
<source lang=cli>
ip addr
</source>

==Active /var/log/messages==
Edit 50-default.conf
<source lang=cli>
nano /etc/rsyslog.d/50-default.conf
</source>
Uncomment the lines
<source lang=cli>
*.=info;*.=notice;*.=warn;\
auth,authpriv.none;\
cron,daemon.none;\
mail,news.none -/var/log/messages
</source>
Then restart the rsyslog daemon:
<source lang=cli>
service rsyslog restart
</source>
Or reboot the entire system
<source lang=cli>
reboot
</source>
{{Source cli}}

Cluster der kan alt/Installation af master

2014-10-30T08:32:52Z

Minoo: /* Update the system */

=Installation of the master=
==Mount the Ubuntu server .iso file (ubuntu-12.04.3-server-amd64.iso)==
#Step: Click '''CD/DVD''' under the devices menu under '''Cluster_Master'''
#Step: Marker '''Use ISO image file''' and browse the iso file. Click '''OK''' to finish
#Step: Click '''Power on this virtual machine''' to start the machine
== Install Ubuntu server ==

#Step: Choose Language (English)
#Step: Click '''Install Ubuntu Server'''
#Step: Select a language (English)
#Step: Select your location (Denmark)
#Step: Configure locales (en_US.UTF-8)
#Step: Configure the keyboard choose '''yes''' and follow the guide
#Step: Enter the hostname (Master)
#Step: Enter the full name (Cluster)
#Step: Username (cluster)
#Step: Password (cluster)
#Step: Use weak password, choose '''yes'''
#Step: Encrypt the home directory, choose '''No'''
#Step: Configure the clock, Europe/Copenhagen, choose '''yes'''
#Step: Partition disk , choose '''manual'''
#Step: Choose the virtual hard drive: '''21,5 GB VMware, VMware Virtual S'''
#Step: Create new empty partition table on this device, choose '''yes'''
#Step: Choose '''pri/log 17,2 GB FREE SPACE'''
#Step: Create the different partions as listed below:
Size: '''1GB''',      Partion type: '''Primary'''     Mounting point: '''/'''
Size: '''512MB''',    Partion type: '''Logical'''     Mounting point: '''/boot'''
Size: '''3GB''',      Partion type: '''Logical'''     Mounting point: '''/var'''
Size: '''3GB''',      Partion type: '''Logical'''     Mounting point: '''/tmp'''
Size: '''5GB''',      Partion type: '''Logical'''     Mounting point: '''/usr'''
Size: '''1GB''',      Partion type: '''Logical'''     Mounting point: '''/srv'''
Size: '''1GB''',      Partion type: '''Logical'''     Mounting point: '''/home'''
Size: '''1GB''',      Partion type: '''Logical'''     '''Swap Area'''
#Step: Choose '''Finish partitioning and write changes to disk''' when you are finish
#Step: Write the change to disk, choose '''yes'''
#Step: HTTP proxy should be blank
#Step: Choose '''No automatic updates'''
#Step: Choose software to install, mark '''OpenSSH server''' and '''DNS server'''
#Step: Install GRUB boot loader, choose '''yes'''
#Step: Finish the installation, choose '''Continue''', the virtual machine will automatic unmount the iso file

==Assign root permission to the cluster user==

Enter the passwd file by:
<source lang=cli>
sudo nano /etc/passwd
</source>
Change the cluster line in the bottom of the file from:
<source lang=cli>
cluster:x:1000:1000:Cluster,,,:/home/cluster:/bin/bash
</source>
To:
<source lang=cli>
cluster:x:0:0:Cluster,,,:/home/cluster:/bin/bash
</source>
You have to logout before the changes can take effect
<source lang=cli>
logout
</source>
Enter the sudoers file
<source lang=cli>
sudo nano /etc/sudoers
</source>
Add the cluster user below the root user
<source lang=cli>
root ALL=(ALL:ALL) ALL
username ALL=(ALL:ALL) ALL
</source>

==Login via SSH==
Manage the server from SSH is a huge benefit because it will enable the copy/paste feature

Open a terminal software, like Putty or TeraTerm

Enter the server IP address and use the cluster/cluster for login

==Update the system==
First search after updates
<source lang=cli>
sudo apt-get update
</source>
Second install the updates. -y = yes to all (unattenuated install)
<source lang=cli>
sudo apt-get upgrade -y
</source>

==Active the secondary network card(eth1)==
Add a new network card i Vmware
Right-click on Cluster_Master>Settings>Add>Network Adapter>Next>Host-Only>Finish
Enter the network card file
<source lang=cli>
nano /etc/network/interfaces
</source>
Add this at the bottum of the file (after eth0)
<source lang=cli>
# The secondary network interface
auto eth1
iface eth1 inet static
address 10.0.0.1
netmask 255.255.255.0
</source>
Restart the network servise
<source lang=cli>
sudo /etc/init.d/networking restart
</source>
To verify the activation use
<source lang=cli>
ip addr
</source>

==Active /var/log/messages==
Edit 50-default.conf
<source lang=cli>
nano /etc/rsyslog.d/50-default.conf
</source>
Uncomment the lines
<source lang=cli>
*.=info;*.=notice;*.=warn;\
auth,authpriv.none;\
cron,daemon.none;\
mail,news.none -/var/log/messages
</source>
Then restart the rsyslog daemon:
<source lang=cli>
service rsyslog restart
</source>
Or reboot the entire system
<source lang=cli>
reboot
</source>
{{Source cli}}

Cluster der kan alt/DNS Server

2014-10-22T11:04:53Z

Minoo: /* configure DNS (Bind) */

=Installation af DNS=

Instruktioner

==Installer DNS Server==

sudo apt-get install bind9

==configure DNS (Bind)==
Vi skal bruge 5 filer.

We will edit 3 files.
#/etc/bind/named.conf.local
#/etc/bind/named.conf.options
#/etc/resolvconf/resolv.conf.d/base

We will create 2 files.
#/etc/bind/zones/dka.local.db
#/etc/bind/zones/rev.0.0.10.in-addr.arpa.db

===First step: add domain zone – dka.local===

*sudo vi /etc/bind/named.conf.local
<source lang=cli>
# Our Domain zone
zone "dka.local." {
type master;
file "/etc/bind/zones/dka.local.db";
};

# For reverse DNS
zone "0.0.10.in-addr.arpa" {
type master;
file "/etc/bind/zones/rev.0.0.10.in-addr.arpa.db";
};

</source>

===Secund step: Add the DNS servers from your ISP===

# Sudo vi /etc/bind/named.conf.options

<source lang=cli>
forwarders {
172.16.4.66;
};

auth-nxdomain no; # conform to RFC1035
listen-on-v6 { any; };
listen-on { any; };

allow-query { 127.0.0.1; 172.16.4.66/24; 10.0.0.0/24;};
};

</source>

===Third step: Modify the resolv.conf file ===

$ Sudo vi /etc/resolve.conf - Version 12.04 skal man ændre nano /etc/resolvconf/resolv.conf.d/base

<source lang=cli>
nameserver 10.0.0.1
domain dka.local
search dka.local

</source>

===Fourth step: Define zones===

Sudo mkdir /etc/bind/zones
Sudo vi /etc/bind/zones/dka.local.db

<source lang=cli>

; BIND data file for local loopback interface
;
$TTL 604800
@ IN SOA ns.dka.local. root.dka.local. (
8 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
;
@ IN NS ns.dka.local.
ns IN A 10.0.0.1
ubuntu IN A 10.0.0.21

</source>

The TTL or time to live is set for 3 days
The ns.mydomain.com nameserver is defined
ubuntudesktop, pc and gateway are entered as an A record
An alias of www is assigned to ubuntudesktop using CNAME

===Step five: Create a “rev.0.0.10.in-addr.arpa” file for reverse lookup===

Sudo nano /etc/bind/zones/rev.0.0.10.in-addr.arpa.db

<source lang=cli>
$TTL 3D
@ IN SOA ns.dka.local. admin.dka.local. (
2007062001
28800
604800
604800
86400
)
IN NS ns.dka.local.
2 IN PTR ubuntu.dka.local

</source>

===Step seks: Test vores nye domæne og DNS entries===

Dig

<source lang=cli>
$ dig dka.local
</source>

Nslookup

<source lang=cli>
nslookup ns
</source>

{{Source cli}}
[[Category:Cluster]][[Category:Ubuntu]]

Cluster der kan alt/DNS Server

2014-10-22T11:04:05Z

Minoo: /* Step five: Create a “rev.0.0.10.in-addr.arpa.db” file for reverse lookup */

=Installation af DNS=

Instruktioner

==Installer DNS Server==

sudo apt-get install bind9

==configure DNS (Bind)==
Vi skal bruge 5 filer.

We will edit 3 files.
#/etc/bind/named.conf.local
#/etc/bind/named.conf.options
#/etc/resolvconf/resolv.conf.d/base

We will create 2 files.
#/etc/bind/zones/dka.local.db
#/etc/bind/zones/rev.0.0.10.in-addr.arpa

===First step: add domain zone – dka.local===

*sudo vi /etc/bind/named.conf.local
<source lang=cli>
# Our Domain zone
zone "dka.local." {
type master;
file "/etc/bind/zones/dka.local.db";
};

# For reverse DNS
zone "0.0.10.in-addr.arpa" {
type master;
file "/etc/bind/zones/rev.0.0.10.in-addr.arpa.db";
};

</source>

===Secund step: Add the DNS servers from your ISP===

# Sudo vi /etc/bind/named.conf.options

<source lang=cli>
forwarders {
172.16.4.66;
};

auth-nxdomain no; # conform to RFC1035
listen-on-v6 { any; };
listen-on { any; };

allow-query { 127.0.0.1; 172.16.4.66/24; 10.0.0.0/24;};
};

</source>

===Third step: Modify the resolv.conf file ===

$ Sudo vi /etc/resolve.conf - Version 12.04 skal man ændre nano /etc/resolvconf/resolv.conf.d/base

<source lang=cli>
nameserver 10.0.0.1
domain dka.local
search dka.local

</source>

===Fourth step: Define zones===

Sudo mkdir /etc/bind/zones
Sudo vi /etc/bind/zones/dka.local.db

<source lang=cli>

; BIND data file for local loopback interface
;
$TTL 604800
@ IN SOA ns.dka.local. root.dka.local. (
8 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
;
@ IN NS ns.dka.local.
ns IN A 10.0.0.1
ubuntu IN A 10.0.0.21

</source>

The TTL or time to live is set for 3 days
The ns.mydomain.com nameserver is defined
ubuntudesktop, pc and gateway are entered as an A record
An alias of www is assigned to ubuntudesktop using CNAME

===Step five: Create a “rev.0.0.10.in-addr.arpa” file for reverse lookup===

Sudo nano /etc/bind/zones/rev.0.0.10.in-addr.arpa.db

<source lang=cli>
$TTL 3D
@ IN SOA ns.dka.local. admin.dka.local. (
2007062001
28800
604800
604800
86400
)
IN NS ns.dka.local.
2 IN PTR ubuntu.dka.local

</source>

===Step seks: Test vores nye domæne og DNS entries===

Dig

<source lang=cli>
$ dig dka.local
</source>

Nslookup

<source lang=cli>
nslookup ns
</source>

{{Source cli}}
[[Category:Cluster]][[Category:Ubuntu]]

Cluster der kan alt/Routing NAT and NIS

2014-10-22T10:33:39Z

Minoo: /* Script adding user in a Cluster */

=Routing & NAT=
Configuring NAT (Sharing Internet)

==Start Routing==
For this, we do not need to install anything new. Everything is right there but is currently disabled.

First, edit sysctl.conf

<source lang=cli>
nano /etc/sysctl.conf
</source>
Find this:
<source lang=cli>
net.ipv4.ip_forward=1
</source>
Uncomment it by removing the #. Now forwarding is enabled in the system kernel.

===Start routing without a reboot===
This will enable it without a reboot. Like restart a service
<source lang=cli>
echo 1 > /proc/sys/net/ipv4/ip_forward
</source>

==NAT==
This make a NAT rule for post-routing. It sets the eth0 as the output card (The one out to the internet) and sets source to it's own IP through MASQUERADE
<source lang=cli>
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
</source>
Save the iptable so it can be loaded correctly after a reboot/shutdown
<source lang=cli>
iptables-save > /etc/iptables.rules
</source>
===Load the iptables.rules at startup===
Edit the file interfaces
<source lang=cli>
nano /etc/network/interfaces
</source>
Insert these lines to the eth0 interface
<source lang=cli>
pre-up iptables-restore < /etc/iptables.rules
post-down iptables-restore < /etc/iptables.rules
</source>
Like this
<source lang=cli>
# The extended interfaces
auto eth0
iface eth0 inet dhcp
pre-up iptables-restore < /etc/iptables.rules
post-down iptables-restore < /etc/iptables.rules
</source>
Test it out on your other client.

=NIS=

Enter the hosts.allow file
<source lang=cli>
nano /etc/hosts.allow
</source>
Add the following line
<source lang=cli>
portmap ypserv ypbind: 10.0.0.0/255.255.255.0
</source>
Install NIS. You will be prompted for domain name. The domain name is not the DNS-domain name - but a unique name for the nodes and master that share the same information.
*NOTE: It is recommended you install NIS using the VMware console instead of SSH
<source lang=cli>
apt-get install portmap nis
</source>
Enter the nis file
<source lang=cli>
nano /etc/default/nis
</source>
Set the NISSERVER line to
<source lang=cli>
NISSERVER=master
</source>
Enter the yp.conf file
<source lang=cli>
nano /etc/yp.conf
</source>
Add the line
<source lang=cli>
domain dka.local server 127.0.0.1
</source>
Enter the ypserv.securenets file
<source lang=cli>
nano /etc/ypserv.securenets
</source>
Replace the 0.0.0.0 line with the 255.255.255.0 10.0.0.0
<source lang=cli>
0.0.0.0 0.0.0.0

255.255.255.0 10.0.0.0
</source>
Reboot the Yellowpages service so the new configuration can be loaded
<source lang=cli>
service ypserv restart
</source>
==Adding a user==
Efter du har oprettet en ny bruger, '''adduser''' er det nødvendigt at genopbygge nis maps!
<source lang=cli>
root@head:~# <input>make -C /var/yp</input>
make: Går til katalog '/var/yp'
make[1]: Går til katalog '/var/yp/c1.local'
Updating passwd.byname...
Updating passwd.byuid...
Updating netid.byname...
Updating shadow.byname...
make[1]: Forlader katalog '/var/yp/c1.local'
make: Forlader katalog '/var/yp'
</source>
===Script adding user in a Cluster===
The following simple script:
*Add a user on the NIS server.
*Add a ssh key to the users '''/home''' library.
**In this cluster '''/home''' is distributed with [[NFS]] to all nodes. Logon to nodes without entering password
*Rebuilding the NIS database with the new user
<source lang=cli>
#!/bin/bash
echo -e "Adding user to cluster\n"
echo -en "User login name: "
read NAME
adduser $NAME

echo -e "Creating keys"
su $NAME -c "ssh-keygen"
echo -e "Distributing keys"
su $NAME -c "cat /home/$NAME/.ssh/id_rsa.pub >> /home/$NAME/.ssh/authorized_key$
echo -e "Rebuild NIS database"
make -C /var/yp
</source>

{{source cli}}

Cluster der kan alt/Install DNS server

2014-10-22T10:31:36Z

Minoo: /* 6. Verify domain and DNS entries */

== Install DNS Server ==

Install DNS server
<source lang="text">
sudo apt-get install bind9
</source>

== Configure DNS Server ==

=== 1. Add domain zone ===

Edit /etc/bind/named.conf.local
<source lang="cli">
sudo nano /etc/bind/named.conf.local
</source>
Add the text below to the bottom of the file
<source lang="cli">
# Domain Zone
zone "dka.local." {
type master;
file "/etc/bind/zones/dka.local.db";
};

# For reverse DNS
zone "0.0.10.in-addr.arpa" {
type master;
file "/etc/bind/zones/rev.0.0.10.in-addr.arpa.db";
};
</source>

=== 2. Add DNS servers from your ISP ===

Enter the named.conf.options file
<source lang="cli">
sudo nano /etc/bind/named.conf.options
</source>
Comment out the following lines
<source lang="text">
dnssec-validation auto;

auth-nxdomain no; # conform to RFC1035
listen-on-v6 { any; };
</source>
Add the following to the bottom of the file, just above '};'
<source lang="cli">
forwarders {
172.16.4.77; # Mercantec DNS
};

auth-nxdomain no; # conform to RFC1035
listen-on-v6 { any; };
listen-on { any; };

allow-query { 127.0.0.1; 172.16.4.77/24; 10.0.0.0/24; };
</source>

'''NOTE:''' Be aware of which IP segment you are in. 172.16.4.77 = Hovedforløb 172.16.2.50,172.16.2.51 = Grundforløb

=== 3. Modify the resolv.conf file ===

Edit /etc/resolvconf/resolv.conf.d/base file, and add the following lines. Replace 'dka.local' with your own domain.

<source lang="cli">
nameserver 127.0.0.1
nameserver 10.0.0.1
nameserver 172.16.4.77
domain dka.local
search dka.local
</source>

You may want to lock down the resolv.conf file, making it immutable.

<source lang="cli">
sudo chattr -f +i /etc/resolv.conf
</source>
Any problems with the resolv.conf file, look [http://ubuntuforums.org/showthread.php?t=1978656%7C here]

=== 4. Define zones ===

First make the directory /etc/bind/zones
<source lang="cli">
sudo mkdir /etc/bind/zones
</source>

Second make the file dka.local.db (replace with your own domain)
<source lang="cli">
sudo nano /etc/bind/zones/dka.local.db
</source>

Add the following text to the newly created file <source lang="cli">
; BIND data file for local loopback interface
;
$TTL 604800
@ IN SOA ns.dka.local. root.dka.local. (
8 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
;
@ IN NS ns.dka.local.
ns IN A 10.0.0.1
cluster IN A 10.0.0.1
node1 IN A 10.0.0.10
node2 IN A 10.0.0.11
node3 IN A 10.0.0.12
node4 IN A 10.0.0.13
</source>

'''Note:''' TTL is set for 1 week.

=== 5. Create a “rev.0.0.10.in-addr.arpa” file for reverse lookup ===

Create the rev.0.0.10.in-addr.arpa file <source lang="cli">
nano /etc/bind/zones/rev.0.0.10.in-addr.arpa
</source> Add the following text <source lang="cli">
$TTL 3D
@ IN SOA ns.dka.local. admin.dka.local. (
2007062001
28800
604800
604800
86400
)
IN NS ns.dka.local.
1 IN PTR ns.dka.local.
1 IN PTR cluster.dka.local.
10 IN PTR node1.dka.local.
11 IN PTR node2.dka.local.
12 IN PTR node3.dka.local.
13 IN PTR node4.dka.local.
</source>

=== 6. Verify domain and DNS entries ===

Restart the network service <source lang="cli">
sudo service bind9 restart
</source>

Dig

<source lang="cli">
$ dig dka.local
</source>

Nslookup

<source lang="cli">
nslookup ns
</source> {{Source cli}}

Cluster der kan alt/Install DNS server

2014-10-22T10:30:25Z

Minoo: /* 4. Define zones */

== Install DNS Server ==

Install DNS server
<source lang="text">
sudo apt-get install bind9
</source>

== Configure DNS Server ==

=== 1. Add domain zone ===

Edit /etc/bind/named.conf.local
<source lang="cli">
sudo nano /etc/bind/named.conf.local
</source>
Add the text below to the bottom of the file
<source lang="cli">
# Domain Zone
zone "dka.local." {
type master;
file "/etc/bind/zones/dka.local.db";
};

# For reverse DNS
zone "0.0.10.in-addr.arpa" {
type master;
file "/etc/bind/zones/rev.0.0.10.in-addr.arpa.db";
};
</source>

=== 2. Add DNS servers from your ISP ===

Enter the named.conf.options file
<source lang="cli">
sudo nano /etc/bind/named.conf.options
</source>
Comment out the following lines
<source lang="text">
dnssec-validation auto;

auth-nxdomain no; # conform to RFC1035
listen-on-v6 { any; };
</source>
Add the following to the bottom of the file, just above '};'
<source lang="cli">
forwarders {
172.16.4.77; # Mercantec DNS
};

auth-nxdomain no; # conform to RFC1035
listen-on-v6 { any; };
listen-on { any; };

allow-query { 127.0.0.1; 172.16.4.77/24; 10.0.0.0/24; };
</source>

'''NOTE:''' Be aware of which IP segment you are in. 172.16.4.77 = Hovedforløb 172.16.2.50,172.16.2.51 = Grundforløb

=== 3. Modify the resolv.conf file ===

Edit /etc/resolvconf/resolv.conf.d/base file, and add the following lines. Replace 'dka.local' with your own domain.

<source lang="cli">
nameserver 127.0.0.1
nameserver 10.0.0.1
nameserver 172.16.4.77
domain dka.local
search dka.local
</source>

You may want to lock down the resolv.conf file, making it immutable.

<source lang="cli">
sudo chattr -f +i /etc/resolv.conf
</source>
Any problems with the resolv.conf file, look [http://ubuntuforums.org/showthread.php?t=1978656%7C here]

=== 4. Define zones ===

First make the directory /etc/bind/zones
<source lang="cli">
sudo mkdir /etc/bind/zones
</source>

Second make the file dka.local.db (replace with your own domain)
<source lang="cli">
sudo nano /etc/bind/zones/dka.local.db
</source>

Add the following text to the newly created file <source lang="cli">
; BIND data file for local loopback interface
;
$TTL 604800
@ IN SOA ns.dka.local. root.dka.local. (
8 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
;
@ IN NS ns.dka.local.
ns IN A 10.0.0.1
cluster IN A 10.0.0.1
node1 IN A 10.0.0.10
node2 IN A 10.0.0.11
node3 IN A 10.0.0.12
node4 IN A 10.0.0.13
</source>

'''Note:''' TTL is set for 1 week.

=== 5. Create a “rev.0.0.10.in-addr.arpa” file for reverse lookup ===

Create the rev.0.0.10.in-addr.arpa file <source lang="cli">
nano /etc/bind/zones/rev.0.0.10.in-addr.arpa
</source> Add the following text <source lang="cli">
$TTL 3D
@ IN SOA ns.dka.local. admin.dka.local. (
2007062001
28800
604800
604800
86400
)
IN NS ns.dka.local.
1 IN PTR ns.dka.local.
1 IN PTR cluster.dka.local.
10 IN PTR node1.dka.local.
11 IN PTR node2.dka.local.
12 IN PTR node3.dka.local.
13 IN PTR node4.dka.local.
</source>

=== 6. Verify domain and DNS entries ===

Restart the network service <source lang="cli">
service bind9 restart
</source>

Dig

<source lang="cli">
$ dig dka.local
</source>

Nslookup

<source lang="cli">
nslookup ns
</source> {{Source cli}}

Cluster der kan alt/Install DNS server

2014-10-22T10:29:55Z

Minoo: /* 2. Add DNS servers from your ISP */

== Install DNS Server ==

Install DNS server
<source lang="text">
sudo apt-get install bind9
</source>

== Configure DNS Server ==

=== 1. Add domain zone ===

Edit /etc/bind/named.conf.local
<source lang="cli">
sudo nano /etc/bind/named.conf.local
</source>
Add the text below to the bottom of the file
<source lang="cli">
# Domain Zone
zone "dka.local." {
type master;
file "/etc/bind/zones/dka.local.db";
};

# For reverse DNS
zone "0.0.10.in-addr.arpa" {
type master;
file "/etc/bind/zones/rev.0.0.10.in-addr.arpa.db";
};
</source>

=== 2. Add DNS servers from your ISP ===

Enter the named.conf.options file
<source lang="cli">
sudo nano /etc/bind/named.conf.options
</source>
Comment out the following lines
<source lang="text">
dnssec-validation auto;

auth-nxdomain no; # conform to RFC1035
listen-on-v6 { any; };
</source>
Add the following to the bottom of the file, just above '};'
<source lang="cli">
forwarders {
172.16.4.77; # Mercantec DNS
};

auth-nxdomain no; # conform to RFC1035
listen-on-v6 { any; };
listen-on { any; };

allow-query { 127.0.0.1; 172.16.4.77/24; 10.0.0.0/24; };
</source>

'''NOTE:''' Be aware of which IP segment you are in. 172.16.4.77 = Hovedforløb 172.16.2.50,172.16.2.51 = Grundforløb

=== 3. Modify the resolv.conf file ===

Edit /etc/resolvconf/resolv.conf.d/base file, and add the following lines. Replace 'dka.local' with your own domain.

<source lang="cli">
nameserver 127.0.0.1
nameserver 10.0.0.1
nameserver 172.16.4.77
domain dka.local
search dka.local
</source>

You may want to lock down the resolv.conf file, making it immutable.

<source lang="cli">
sudo chattr -f +i /etc/resolv.conf
</source>
Any problems with the resolv.conf file, look [http://ubuntuforums.org/showthread.php?t=1978656%7C here]

=== 4. Define zones ===

First make the directory /etc/bind/zones
<source lang="cli">
mkdir /etc/bind/zones
</source>

Second make the file dka.local.db (replace with your own domain)
<source lang="cli">
nano /etc/bind/zones/dka.local.db
</source>

Add the following text to the newly created file <source lang="cli">
; BIND data file for local loopback interface
;
$TTL 604800
@ IN SOA ns.dka.local. root.dka.local. (
8 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
;
@ IN NS ns.dka.local.
ns IN A 10.0.0.1
cluster IN A 10.0.0.1
node1 IN A 10.0.0.10
node2 IN A 10.0.0.11
node3 IN A 10.0.0.12
node4 IN A 10.0.0.13
</source>

'''Note:''' TTL is set for 1 week.

=== 5. Create a “rev.0.0.10.in-addr.arpa” file for reverse lookup ===

Create the rev.0.0.10.in-addr.arpa file <source lang="cli">
nano /etc/bind/zones/rev.0.0.10.in-addr.arpa
</source> Add the following text <source lang="cli">
$TTL 3D
@ IN SOA ns.dka.local. admin.dka.local. (
2007062001
28800
604800
604800
86400
)
IN NS ns.dka.local.
1 IN PTR ns.dka.local.
1 IN PTR cluster.dka.local.
10 IN PTR node1.dka.local.
11 IN PTR node2.dka.local.
12 IN PTR node3.dka.local.
13 IN PTR node4.dka.local.
</source>

=== 6. Verify domain and DNS entries ===

Restart the network service <source lang="cli">
service bind9 restart
</source>

Dig

<source lang="cli">
$ dig dka.local
</source>

Nslookup

<source lang="cli">
nslookup ns
</source> {{Source cli}}

Cluster der kan alt/Install DNS server

2014-10-22T10:29:32Z

Minoo: /* Install DNS Server */

== Install DNS Server ==

Install DNS server
<source lang="text">
sudo apt-get install bind9
</source>

== Configure DNS Server ==

=== 1. Add domain zone ===

Edit /etc/bind/named.conf.local
<source lang="cli">
sudo nano /etc/bind/named.conf.local
</source>
Add the text below to the bottom of the file
<source lang="cli">
# Domain Zone
zone "dka.local." {
type master;
file "/etc/bind/zones/dka.local.db";
};

# For reverse DNS
zone "0.0.10.in-addr.arpa" {
type master;
file "/etc/bind/zones/rev.0.0.10.in-addr.arpa.db";
};
</source>

=== 2. Add DNS servers from your ISP ===

Enter the named.conf.options file
<source lang="cli">
nano /etc/bind/named.conf.options
</source>
Comment out the following lines
<source lang="text">
dnssec-validation auto;

auth-nxdomain no; # conform to RFC1035
listen-on-v6 { any; };
</source>
Add the following to the bottom of the file, just above '};'
<source lang="cli">
forwarders {
172.16.4.77; # Mercantec DNS
};

auth-nxdomain no; # conform to RFC1035
listen-on-v6 { any; };
listen-on { any; };

allow-query { 127.0.0.1; 172.16.4.77/24; 10.0.0.0/24; };
</source>

'''NOTE:''' Be aware of which IP segment you are in. 172.16.4.77 = Hovedforløb 172.16.2.50,172.16.2.51 = Grundforløb

=== 3. Modify the resolv.conf file ===

Edit /etc/resolvconf/resolv.conf.d/base file, and add the following lines. Replace 'dka.local' with your own domain.

<source lang="cli">
nameserver 127.0.0.1
nameserver 10.0.0.1
nameserver 172.16.4.77
domain dka.local
search dka.local
</source>

You may want to lock down the resolv.conf file, making it immutable.

<source lang="cli">
sudo chattr -f +i /etc/resolv.conf
</source>
Any problems with the resolv.conf file, look [http://ubuntuforums.org/showthread.php?t=1978656%7C here]

=== 4. Define zones ===

First make the directory /etc/bind/zones
<source lang="cli">
mkdir /etc/bind/zones
</source>

Second make the file dka.local.db (replace with your own domain)
<source lang="cli">
nano /etc/bind/zones/dka.local.db
</source>

Add the following text to the newly created file <source lang="cli">
; BIND data file for local loopback interface
;
$TTL 604800
@ IN SOA ns.dka.local. root.dka.local. (
8 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
;
@ IN NS ns.dka.local.
ns IN A 10.0.0.1
cluster IN A 10.0.0.1
node1 IN A 10.0.0.10
node2 IN A 10.0.0.11
node3 IN A 10.0.0.12
node4 IN A 10.0.0.13
</source>

'''Note:''' TTL is set for 1 week.

=== 5. Create a “rev.0.0.10.in-addr.arpa” file for reverse lookup ===

Create the rev.0.0.10.in-addr.arpa file <source lang="cli">
nano /etc/bind/zones/rev.0.0.10.in-addr.arpa
</source> Add the following text <source lang="cli">
$TTL 3D
@ IN SOA ns.dka.local. admin.dka.local. (
2007062001
28800
604800
604800
86400
)
IN NS ns.dka.local.
1 IN PTR ns.dka.local.
1 IN PTR cluster.dka.local.
10 IN PTR node1.dka.local.
11 IN PTR node2.dka.local.
12 IN PTR node3.dka.local.
13 IN PTR node4.dka.local.
</source>

=== 6. Verify domain and DNS entries ===

Restart the network service <source lang="cli">
service bind9 restart
</source>

Dig

<source lang="cli">
$ dig dka.local
</source>

Nslookup

<source lang="cli">
nslookup ns
</source> {{Source cli}}

Cluster der kan alt/Install DHCP server

2014-10-22T10:28:45Z

Minoo: /* Configure dhcpd.conf */

== Install DHCP server ==

Install DHCP server by download and install the DHCP package

<source lang=cli>
sudo apt-get install isc-dhcp-server
</source>

=== Configure dhcpd.conf ===
Ether the dhcp.conf
<source lang=cli>
sudo nano /etc/dhcp/dhcpd.conf
</source>

Uncomment everything and add the following lines at the bottom of the dhcp.conf file. You have to enter the nodes MAC-addresses. This can be added later on, but if you already know the MAC-addresses on the nodes type them in now

<source lang=cli>

ddns-update-style none;
authoritative;

option domain-name "dka.local";
option domain-name-servers 10.0.0.1;

default-lease-time 3100; # 51 minutes.
max-lease-time 604800; # 1 week

subnet 10.0.0.0 netmask 255.255.255.0 {
option routers 10.0.0.1;
option subnet-mask 255.255.255.0;
option broadcast-address 10.0.0.255;
next-server 10.0.0.1;
filename "pxelinux.0";

# The latest input from layer-9 required us to shift the dynamic
# range from the top half of the subnet down to the bottom half.
# This pool clause will elicit NAKs for the old leases while the
# clients migrate. Remember to remove this once they've all booted
# once or expired.
pool {
range 10.0.0.1 10.0.0.20;
deny all clients;
}
pool {
range 10.0.0.21 10.0.0.254;
}

host node1 {
hardware ethernet <node1 MAC address>;
server-name "node1.dka.local";
fixed-address 10.0.0.10;
}

host node2 {
hardware ethernet <node2 MAC address>;
server-name "node2.dka.local";
fixed-address 10.0.0.11;
}

host node3 {
hardware ethernet <node3 MAC address>;
server-name "node3.dka.local";
fixed-address 10.0.0.12;
}

host node4 {
hardware ethernet <node4 MAC address>;
server-name "node4.dka.local";
fixed-address 10.0.0.13;
}

}

</source>
{{Source cli}}

[[Category:Cluster]]

Cluster der kan alt/LDAP eller NIS

2014-10-21T12:09:51Z

Minoo:

=Installation af master server=

Tilføj følgende linje til '''sudo nano /etc/hosts.allow'''.
<source lang=cli>
portmap ypserv ypbind: 10.0.0.0/255.255.255.0
</source>
Installer NIS. Du vil blive bedt om at indtaste domænenavnet. Domænenavnet er ikke DNS-domænenavn - men et unikt navn for klyngen af maskiner deler de samme oplysninger.
<source lang=cli>
sudo apt-get install portmap nis
</source>
*Ret '''sudo nano /etc/default/nis''' (nano /etc/default/nis) og set NISSERVER linjen til
<source lang=cli>
NISSERVER =master
</source>
*Ret '''sudo nano/etc/yp.conf''' og tilføj en linje med:
<source lang=cli>
domain dka.local server 127.0.0.1
</source>
*Ret '''sudo nano /etc/ypserv.securenets''' fjern '''0.0.0.0''' linjen - insecure - og tilføj dit eget net(255.255.255.0 10.0.0.0).
*genstart så yellowpages servicen for at loade det nye configuration.
<source lang=cli>
sudo service ypserv restart
</source>
==Adding a user==
Efter du har oprettet en ny bruger, '''adduser''' er det nødvendigt at genopbygge nis maps!
<source lang=cli>
root@head:~# <input>make -C /var/yp</input>
make: Går til katalog '/var/yp'
make[1]: Går til katalog '/var/yp/c1.local'
Updating passwd.byname...
Updating passwd.byuid...
Updating netid.byname...
Updating shadow.byname...
make[1]: Forlader katalog '/var/yp/c1.local'
make: Forlader katalog '/var/yp'
</source>
===Script adding user in a Cluster===
The following simple script:
*Add a user on the NIS server.
*Add a ssh key to the users '''/home''' library.
**In this cluster '''/home''' is distributed with [[NFS]] to all nodes. Logon to nodes without entering password
*Rebuilding the NIS database with the new user
<source lang=cli>
#!/bin/bash
echo -e "Adding user to cluster"
echo -e "======================\n"
echo -en "User login name: "
read NAME
adduser $NAME

echo -e "Creating keys"
su $NAME -c "ssh-keygen"
echo -e "Distributing keys"
su $NAME -c "cat /home/$NAME/.ssh/id_rsa.pub >> /home/$NAME/.ssh/authorized_keys"
echo -e "Rebuild NIS database"
make -C /var/yp
</source>

=Installation på klienten=
Installer software
<source lang=cli>
sudo apt-get install portmap nis
</source>
Kør disse kommandoer, hvor NIS_SERVER_IP = din nis server ip
<source lang=cli>
echo "portmap : <notice>NIS_SERVER_IP"</notice> >> /etc/hosts.allow
echo "+::::::" >> /etc/passwd
echo "+:::" >> /etc/group
echo "+::::::::" >> /etc/shadow
echo "Domain = Cluster" >> /etc/idmapd.conf
echo "ypserver <notice>NIS_SERVER_IP"</notice> >> /etc/yp.conf
service ypbind restart
service idmapd restart
</source>
Test med
<source lang=cli>
yptest
</source>
{{source cli}}