RE: RAC & failing switch and power issues: more details
Date: Thu, 3 Dec 2009 17:06:51 -0500
This may not work - I don't remember whether the CRS will monitor the physical link state, but if it loses that link state, it very likely could evict itself. I seem to remember seeing some test plans on other OSes where they did get a different result from doing an ifconfig down vs. a hard cable pull.
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of daniel.hubler_at_aurora.org
Sent: Thursday, December 03, 2009 4:56 PM To: oracle-l_at_freelists.org
Subject: RAC & failing switch and power issues: more details
The private switch is truly private; it does not share any traffic with
any other network(s).
The plan would be:
- shutdown database + CRS on node-2 (passive node)
- unplug (or do work on) the switch
Cerner Support Team
----- Forwarded by Daniel Hubler/HEI/AHC on 12/03/2009 03:54 PM -----
12/03/2009 03:34 PM
RAC & failing switch and power issues
Running a 2-node RAC on AIX (v5.3).
Application runs in active-passive fashion.
We have issues with:
- the switch that is the RAC interconnect
- the power being supplied to that same switch
Our current idea is to shut down the passive instance (prod2). We are assuming that this would leave us free to play games with the switch.
Our software vendor is telling is this should be O.K.
Oracle is telling us that if we pull the switch after shutting down
that the server running the active instance (PROD1) will "evict itself".
This flies in the face of some testing we did early this year where we
simulated loss of the switch
by shutting down the interfaces via ifconfig.
Would love to hear comments opinions about this situation. Thanks in advance.