Install DB2 on PowerHA Cluster

[frit...@gmail.com]

Well, now we're installing DB2 on a PowerHA cluster. (We do plan to install it locally on each node.) Problem is that the installer is failing right off the bat with this error:

DB2 Setup log file started at: Fri Jun 13 09:57:30 2014 EDT
============================================================

Operating system information: AIX 7.1
ERROR: The DB2 installer detected that an RSCT peer domain is online. Bring the peer
domain offline in order to allow the DB2 installer to update the TSA
installation. For more information, see the DB2 Information Center at:
"http://publib.boulder.ibm.com/infocenter/db2luw/v10r5/index.jsp".

ERROR: The "db2_install" command failed. Ensure the command parameters are
valid, that errors reported in the log file are fixed, then rerun the command.

I've actually tried both a 10.1 install and also a 10.5 install with the same result each time. I do have a support ticket open on this, but while I'm waiting, I was wondering if anyone out there had seen this issue before and had any suggestions.

Thanks,
Greig Wise

[mike...@yahoo.com]

I have successfully used db2 v10.1 (fp3, fp4) to install on AIX v7.1 with PowerHA, using db2_install also. Before installing, did you carefully check the output of:

db2prereqcheck -i -o /tmp/db2prereqcheck.log

[frit...@gmail.com]

We finally managed to work around this error and I though I'd post the outcome for anyone having the issue in the future. The issue with regards to the DB2 installation are pretty clear from the error message actually. Apparently, you cannot install DB2 onto a PowerHA cluster while the "peer domain" is online. After that fairly obvious realization, the problem then became how to make the peer domain go offline. This was not so simple as it seems.

The most straightforward way to take it offline did not work due to an apparent bug in PowerHA (version 7.1.3). So we had to use a workaround method to do this:

1. Stop PowerHA (Wait till clstrmgr in init state)
2. Create script to Stop CAA as follows:
#!/bin/ksh93
touch /usr/es/sbin/cluster/etc/emgr.$$
clctrl -stop -m <nodename>
3. chmod the script from step #2 to allow execute and the run the script

After doing the above steps, the lsrpdomain command will now show the peer domain as offline.

Hope this helps someone.

Greig Wise

[banya...@gmail.com]

Hello,

We tried all but script not stop anything.

[20612...@gmail.com]

thanks for sharing the experience,but according to IBM knowledge center,we should try using stoprpdomain to stop the peer domain.use the f flag to force it if it doesnt work. if it still doesnt stop ,try using The forcerpoffline command.

here is the topic on IBM knowledge center:
Taking a peer domain offline http://www.ibm.com/support/knowledgecenter/SGVKBA_3.2.1/com.ibm.rsct.admin/bl503_takeoff.htm
Forcing a peer domain offline
http://www.ibm.com/support/knowledgecenter/SGVKBA_3.2.1/com.ibm.rsct.admin/bl503_dforceoff.htm