CentOS cluster computing - Revision history

Heth: /* Backup technologies */

2009-11-08T12:29:53Z

‎Backup technologies

2009-05-05T13:12:37Z

‎Manuls

2009-05-05T11:39:12Z

‎aisexec - The actual kernel manager.

2009-05-05T10:42:29Z

‎aisexec - The actual kernel manager.

2009-05-05T10:41:48Z

‎aisexec - The actual kernel manager.

2009-05-04T06:07:10Z

‎Abbreviations and systems

2009-04-30T06:23:25Z

‎Starting luci and ricci

2009-04-14T06:42:24Z

‎Quorum

2009-04-07T13:51:14Z

2009-04-07T13:46:27Z

← Older revision		Revision as of 12:29, 8 November 2009
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	*[http://mars.tekkom.dk/sw/RedHat52/IBM%20Redbook%20product%20and%20Backup%20and%20recovery.pdf IBM Backup and recovery]		*[http://mars.tekkom.dk/sw/RedHat52/IBM%20Redbook%20product%20and%20Backup%20and%20recovery.pdf IBM Backup and recovery]

−	[[Category:Linux]][[Category:cluster]]	+	[[Category:Linux]][[Category:cluster]][[Category:CentOS]]

← Older revision		Revision as of 13:12, 5 May 2009
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	</pre>		</pre>
		+
		+	= Configuration of services =
		+	==Virtual IP==
		+	Add a resource ''IP Address''
		+	Add a service and select ''add a resource'' select the IP Address Resource.
		+

	= Manuls =		= Manuls =

@@ Line 106: / Line 106: @@
 === aisexec - The actual kernel manager. ===
 Communicates among the nodes using a token
 <pre>
 chkconfig --level 2345 ricci on
@@ Line 116: / Line 118: @@
 #chkconfig --level 2345 ccsd on
 service ricci start
-service luci start
+service luci stop
 service rgmanager start
 service gfs start

@@ Line 112: / Line 112: @@
 chkconfig --level 2345 gfs on
 chkconfig --level 2345 clvmd on
-chkconfig --level 2345 fenced on
+#chkconfig --level 2345 fenced on
 chkconfig --level 2345 cman on
-chkconfig --level 2345 ccsd on
+#chkconfig --level 2345 ccsd on
 service ricci start
 service luci start

@@ Line 106: / Line 106: @@
 === aisexec - The actual kernel manager. ===
 Communicates among the nodes using a token
 ==utilities==

@@ Line 23: / Line 23: @@
 | [[GNDB]] || Global Network Block Device. Low level storage access over Ethernet || GFS server
 |-
-| [[LVS]] || [http://www.linuxvirtualserver.org/ Linux Virtual Server], routing software to privide IP load balancing || On two or more Linux gateways
+| [[LVS]] || [http://www.linuxvirtualserver.org/ Linux Virtual Server], routing software to provide IP load balancing || On two or more Linux gateways
 |-
 | [[CentOS cluster computing#RHCS|RHCS]] || RedHat Cluster Suite - Software components to build various types of Clusters ||

@@ Line 53: / Line 53: @@
 Follow the instructions in chapter 3 - Configuring Red Hat Cluster With
 Conga - in [http://mars.tekkom.dk/sw/RedHat52/Cluster_Administration.pdf RedHat 5.2 Cluster Administration] manual.
 = Cluster management from the console =

@@ Line 30: / Line 30: @@
 === Quorum ===
 *Quorum: The minimum number of people in a organization to conduct business or in this case the minimum number of resources available to keep the cluster running.
-In Redhat/Centos Clustering Quorum is when more than 50% of the votes are available. In a standard setting each node of a cluster have one vote. If you Cluster consists of eight nodes, the Cluster will first be available when five nodes are tied together in the Cluster. See the current operational status with '''cman_tool status''' command.<br/>
+:In Redhat/Centos Clustering Quorum is when more than 50% of the votes are available. In a standard setting each node of a cluster have one vote. If you Cluster consists of eight nodes, the Cluster will first be available when five nodes are tied together in the Cluster. See the current operational status with '''cman_tool status''' command.<br/>
-This rule is necessary for example in the case we have eight nodes and a network error cuts the cluster in half, we would suddenly have two clusters with four nodes. The two Clusters would destroy the integrity of databases and storage.<br/>
+:This rule is necessary for example in the case we have eight nodes and a network error cuts the cluster in half, we would suddenly have two clusters with four nodes. The two Clusters would destroy the integrity of databases and storage.<br/>
 <span id="RHCS"></span>

@@ Line 58: / Line 58: @@
 == Cluster subsystems ==
 There are quite a few subsystems and daemons. See the picture below
-[[image:cman-new.png|none|300px|thumb| CMAN new model, from the aiscman tutorial. (See below)]]
+[[image:cman-new.png|none|300px|thumb| CMAN new model, from the aiscman tutorial.]]
 ===cman - Cluster Manager===
 ''cman'' consists in CMAN version 2 of [http://openais.org OpenAIS] See the [[media:aiscman.pdf |aiscman tutorial]]

@@ Line 1: / Line 1: @@
 = Which services are available with RedHAT/Centos Clustering =
 == High availability ==
-*rgmanager (Relocates services from node to node in case of malfunction)
+*rgmanager (Relocates services from one node to another node in case of malfunction)
 = Abbreviations and systems =