Veritas guide Veritas Guide Entities Cluster ?? Highest level entity which contains all service groups supported across all related systems that have membership within a speci ?c cluster implementation The database cluster contains several systems hosts u

Veritas Guide Entities Cluster ?? Highest level entity which contains all service groups supported across all related systems that have membership within a speci ?c cluster implementation The database cluster contains several systems hosts used to support the database server in the event of failure of the system running the database There is a database cluster and for some implementations there may be an application server cluster Service Group ?? A service group is a logical grouping of resources There is a service group called oracle-ha-grp within the database cluster There is a service group called APP-Serv within the application server cluster System ?? a system is one node within a service group A machine is usually a system In a two node system there are two systems Ideally one should be in an ONLINE state the other in an OFFLINE state Failovers are from one system to another Veritas will detect the failure of one system and bring the other online Resource ?? Any service program hardware volume manager object or other entity within the computing environment placed under the control of the cluster within a Service Group Veritas Cluster Server Commands VCS Run these as root root To See Status hastatus ??sum The state will show FAULTED if the service group did not start properly CTo start Cluster hastart -force This will try to start the vcs cluster on a particular node system To Clear Fault hagrp ??clear -sys for example for the database systems hagrp ??clear oracle-ha-grp -sys pcsvcs-db for the app server hagrp ??clear APP-Serv ??sys pcsvcs-as To Bring a Service Group O ine and Online hagrp ??online -sys for example for the database systems hagrp ??o ine oracle-ha-grp -sys pcsvcs-db hagrp ??online oracle-ha-grp -sys pcsvcs-db for the app server hagrp ??o ine APP-Serv ??sys pcsvcs-as hagrp ??online APP-Serv ??sys pcsvcs-as To Bring a Resource O ine and Online hares ??o line -sys for example for the database systems hares ??o ine listener -sys pcsvcs-db Perform these two steps in this order hares ?? o ine oracle -sys pcsvcs-db hares ??online oracle -sys pcsvcs-db Perform these two steps in this order hares ??online listener -sys pcsvcs-db for the app server hares ??o ine ps init ??sys pcsvcs-as CTo Switch a System hagrp ??switch -to for example assume the database has failed over and you want to bring the processing database back to the primary machine hagrp ??switch oracle-ha-grp -to pcsvcs-db To Stop a System hastop -all ? hastop ? will shut down a system ? hastop ??all ? will shut down all systems within a cluster VCS Directories Installation Logs var VRTSvcs log engine log oracle log Con ?guration ?les etc VRTSvcs conf con ?g main cf CVeritas Volume Manager Operations Check the status of volume manager objects volumes plex subdisk disk group vxprint ??ht more status should be ENABLED for all To start Volume Manager GUI opt VRTSvmsa bin vmsa Example ? set DISPLAY to your IP export DISPLAY bash or korn shell ? vmsa

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