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Operating Systems AIX [Howto] Update AIX in HACMP cluster-nodes Post 302779465 by MichaelFelt on Tuesday 12th of March 2013 05:04:36 PM
Old 03-12-2013
Quote:
Originally Posted by bakunin
The following procedure is proven to work with AIX 5.3, 6.x and 7.x and associated HACMP/PowerHA versions. It needs only one takeover, so the downtime is from somewhere from under a minute to some minutes, depending on the nature of your resource group(s).

Communications in HACMP happens via RSCT and for a cluster to work the version of the RSCT-packages have to be in sync. Fortunately it is easy to update the RSCT independent of the rest of the OS.
... snip ...
I hope this helps.

bakunin
Looks good - however, have you also verified this with an update to SystemMirror (aka PowerHA v7?). As I understand it, SystemMirror is not using (only?) RSCT - but is using CAA (Cluster Aware AIX) for communication, topology and heartbeats. -- I do not do much with SystemMirror so I am asking - anyone - just to be sure someone does not get surprised when working with/updating to SystemMirror.
 

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clinfo(1M)						  System Administration Commands						clinfo(1M)

NAME
clinfo - display cluster information SYNOPSIS
clinfo [-nh] DESCRIPTION
The clinfo command displays cluster configuration information about the node from which the command is executed. Without arguments, clinfo returns an exit status of 0 if the node is configured and booted as part of a cluster. Otherwise, clinfo returns an exit status of 1. OPTIONS
The following options are supported: -h Displays the highest node number allowed to be configured. This is different from the maximum number of nodes supported in a given cluster. The current highest configured node number can change immediately after the command returns since new nodes can be dynam- ically added to a running cluster. For example, clinfo -h might return 64, meaning that the highest number you can use to identify a node is 64. See the Sun Cluster 3.0 System Administration Guide for a description of utilities you can use to determine the number of nodes in a cluster. -n Prints the number of the node from which clinfo is executed. EXIT STATUS
The following exit values are returned: 0 Successful completion. 1 An error occurred. This is usually because the node is not configured or booted as part of a cluster. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
attributes(5) SunOS 5.10 12 Mar 2002 clinfo(1M)
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