LifeKeeper for Linux may be upgraded to future releases while preserving existing resource hierarchies. Review this information carefully to ensure that you minimize application downtime.
- While upgrading LifeKeeper in a cluster, switch all applications away from the server to be upgraded now. Do this manually or by setting the LifeKeeper shutdown strategy to “Switchover” which causes the applications to be switched when LifeKeeper is stopped or the server is shut down. Refer to the Setting Server Shutdown Strategy for more information.
- Upgrade LifeKeeper by referring to How to Use Setup Scripts.
- Switch all applications back to the upgraded server.
- Repeat this procedure for each server in the LifeKeeper cluster to be upgraded. For clusters containing a dedicated Witness/Quorum node (a node with no resource instances) no switching of applications is required prior to upgrading LifeKeeper.
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