We just found out that the installation of DB/2 on a HACMP- (PowerHA-) Cluster running v7.1.3 is not possible due to a bug in HACMP. DB/2-version was 10.5 but this seems to apply to 10.1 too (and probably other versions as well).
The error message the DB/2-installer issues is something like:
Code:
Do you want to install the DB2 pureScale Feature? [yes/no]
no
DB2 installation is being initialized.
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/v10r1/index.jsp".
A major error occurred while installing "DB2 Enterprise Server Edition " on
this computer. The installation cannot continue. If the problem persists
contact your technical service representative.
For more information see the DB2 installation log at
"/tmp/db2_install.log.3277028".
The problem is that the RSCT peer domain is created by the HACMP software during the cluster creation and cannot simply be disabled. You can check for the existence of it with the command
but this didn't help us either because the peer domain simply didn't go away.
Solution: before installing DB/2 delete all configured ressource groups of the cluster, then stop it. This will bring down the RSCT daemons, namely ctrmc. After installing DB/2 you can recreate the ressource groups and bring the cluster online again.
PS: Don't bother to report this bug to IBM: that has already been done.
I hope this helps.
bakunin
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I had a lengthy reply - but it never made it out - sigh.
Just note that RSCT activity is normal, even necessary, to have DLPAR aka Dynamic Resource Management working.
Code:
root@x062:[/]oslevel -s
7100-03-05-1524
root@x062:[/]lssrc -a | grep rsct
ctrmc rsct 6160584 active
IBM.HostRM rsct_rm 6947044 active
IBM.DRM rsct_rm 7078142 active
IBM.MgmtDomainRM rsct_rm 6684680 active
IBM.ServiceRM rsct_rm 5963970 active
ctcas rsct inoperative
IBM.ERRM rsct_rm inoperative
IBM.AuditRM rsct_rm inoperative
IBM.FSRM rsct_rm inoperative
IBM.SensorRM rsct_rm inoperative
IBM.ConfigRM rsct_rm inoperative
IBM.WLMRM rsct_rm inoperative
IBM.StorageRM rsct_rm inoperative
IBM.LPRM rsct_rm inoperative
IBM.MicroSensorRM rsct_rm inoperative
As much has changed in RSCT between the different versions of AIX 5.3 and AIX 7.1 (soon to include AIX 7.2) - your mileage may vary. In any case, ctrmc is supposed to be active all the time. And for years, the cluster manager demon that PowerHA installs is supposed to be active - all the time (in state ST_idle perhaps!).
For a lot of bla bla about what ctrmc is doing try:
Code:
root@x062:[/]lssrc -s ctrmc -l
My experience with DB2 and installs on AIX is that DB2 (read software group) does add specific stuff for AIX (they use neither installp nor rpm for their install method) - and when AIX changes enough that there modification/specification no longer fits - install may fail, or - more frequently - a warning message that is no longer applicable.
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Please note - the last time I was doing modifications like this it was still db2 version 9.something.
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