09-14-2019
New to AIX: How do I setup high availability on an AIX System
I am new to AIX but not new to unix.
I have an interview for an AIX systems admin position and I know they want someone who has knowledge of High Availability, Failover and LPARs
From my research so far, It appear powerha is used to setup high availability and failover on Power systems but is this the case for all AIX systems or does it differ?
I found documentation on IBM Knowledge Center for setting up High availability using PowerHA but I do not know if this would be the process on all aix systems.
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cm(5) File Formats Manual cm(5)
NAME
cm - cluster monitor for high availability clusters
Remarks
Cluster operations require the installation of the optional Serviceguard or Serviceguard Extension for RAC software, which is not included
in the standard HP-UX operating system.
DESCRIPTION
Serviceguard and Serviceguard Extension for RAC are high availability products which provide an environment such that after a failure of a
node, services (applications) can be up and running again on another node within a very short amount of time. In addition, Serviceguard
Extension for RAC is the enabling software for the Real Application Clusters (RAC). Working with the basic Serviceguard product, Service-
guard Extension for Faster Failover allows configuration of clusters for optimized failover.
Commands
The following set of commands is used to configure a high availability cluster:
cmquerycl(1M)
cmmakepkg(1M)
cmcheckconf(1M)
cmapplyconf(1M)
The following commands are used to run or halt a cluster:
cmruncl(1M)
cmhaltcl(1M)
cmrunnode(1M)
cmhaltnode(1M)
cmviewcl(1M)
Once a cluster is formed, the following commands are provided for manual operation on high availability packages:
cmrunpkg(1M)
cmhaltpkg(1M)
cmmodpkg(1M)
The following commands are used within a package control script to control the services and networks configured for a package:
cmrunserv(1M)
cmhaltserv(1M)
cmmodnet(1M)
A command is provided to aid in migrating from a SwitchOver/UX configuration to a Serviceguard cluster:
cmmigrate(1M)
This command is not applicable with Serviceguard Extension for RAC.
SEE ALSO
Managing Serviceguard.
Configuring RAC Clusters with Serviceguard Extension for RAC.
Requires Optional Serviceguard Software cm(5)