Cluster Server Installation Guide for Solaris x64 5.0 - Storage ...

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160 Adding and removing cluster nodesRemoving a node from a clusterTable 8-2TaskTasks involved in removing a nodeReference■ Switch or remove any VCS service groups “Deleting the leaving node from VCSon the node leaving the cluster. configuration” on page 161■Delete the node from VCS configuration.Modify the llthosts and gabtab files to reflect “Modifying configuration files on eachthe change. remaining node” on page 162On the node leaving the cluster:“Unloading LLT and GAB and removing■ Modify startup scripts for LLT, GAB, and VCS on the leaving node” on page 163VCS to allow reboot of the node withoutaffecting the cluster.■■Unconfigure and unload the LLT andGAB utilities.Remove the VCS packages.Verify the status of nodes and service groupsStart by issuing the following commands from one of the nodes to remain, nodeA or node B.To verify the status of the nodes and the service groups1 Make a backup copy of the current configuration file, main.cf.# cp -p /etc/VRTSvcs/conf/config/main.cf \/etc/VRTSvcs/conf/config/main.cf.goodcopy2 Check the status of the systems and the service groups.# hastatus -summary-- SYSTEM STATE-- System State FrozenA A RUNNING 0A B RUNNING 0A C RUNNING 0-- GROUP STATE-- Group System Probed AutoDisabled StateB grp1 A Y N ONLINEB grp1 B Y N OFFLINEB grp2 A Y N ONLINEB grp3 B Y N OFFLINEB grp3 C Y N ONLINEB grp4 C Y N ONLINEThe example output from the hastatus command shows that nodes A, B,and C are the nodes in the cluster. Also, service group grp3 is configured to
Adding and removing cluster nodesRemoving a node from a cluster161run on node B and node C, the leaving node. Service group grp4 runs only onnode C. Service groups grp1 and grp2 do not run on node C.Deleting the leaving node from VCS configurationBefore removing a node from the cluster, you must remove or switch from theleaving node the service groups on which other service groups depend.To remove or switch service groups from the leaving node1 Switch failover service groups from the leaving node. You can switch grp3from node C to node B.# hagrp -switch grp3 -to B2 Check for any dependencies involving any service groups that run on theleaving node; for example, grp4 runs only on the leaving node.# hagrp -dep3 If the service group on the leaving node requires other service groups, thatis, if it is a parent to service groups on other nodes, then unlink the servicegroups.# haconf -makerw# hagrp -unlink grp4 grp1These commands enable you to edit the configuration and to remove therequirement grp4 has for grp1.4 Stop VCS on the leaving node:# hastop -sys C5 Check the status again. The state of the leaving node should be EXITED. Also,any service groups set up for failover should be online on other nodes:# hastatus -summary-- SYSTEM STATE-- System State FrozenA A RUNNING 0A B RUNNING 0A C EXITED 0-- GROUP STATE-- Group System Probed AutoDisabled StateB grp1 A Y N ONLINEB grp1 B Y N OFFLINEB grp2 A Y N ONLINEB grp3 B Y N ONLINEB grp3 C Y Y OFFLINEB grp4 C Y N OFFLINE6 Delete the leaving node from the SystemList of service groups grp3 andgrp4.
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98 Setting up I/O fencingAbout I/O
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Page 144 and 145: 144 Upgrading to VCS 5.0Upgrading V
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Page 156 and 157: 156 Adding and removing cluster nod
Page 166 and 167: 166 Installing VCS on a single node
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