RE: Leap Second cause Cluster crashes for anyone?

From: Matthew Zito <mzito_at_gridapp.com>
Date: Fri, 2 Jan 2009 11:33:05 -0500
Message-ID: <C0A5E31718FC064A91E9FD7BE2F081B101C6FDF8_at_exchange.gridapp.com>

I've seen issues like this happen, but only when there's an external utility being used to set the time. Are you using rdate or ntpd or something similar? A well-configured NTP instance will drag the clock rather than jumping it ahead, but sometimes NTP can do that. I can't speak to the oprocd+third party clusterware issue.  

Matt  

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From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of LS Cheng Sent: Friday, January 02, 2009 10:40 AM
To: Rajesh.Rao_at_jpmchase.com
Cc: b.rost_at_portrix.net; oracle-l_at_freelists.org Subject: Re: Leap Second cause Cluster crashes for anyone?  

Not about your problem but having oprocd running when the third party cluster is running as well means the installation wasnt right, it's not a not recommended configuration but rather not supported

Thanks

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LSC



On Fri, Jan 2, 2009 at 3:47 PM, <Rajesh.Rao_at_jpmchase.com> wrote:


http://bugs.opensolaris.org/view_bug.do?bug_id=6595936 
Oracle bug 5015469 - OPROCD REBOOTS NODE WHEN TIME IS SET BACK BY XNTPD 

Some more info. We also use Veritas Clusterware, and apparently, also
have oprocd running (which is not the recommended configuration).  But
we also have experienced it on clusters with no Veritas involved. For
that, Oracle recommends "other non-VCS customers need to have CRS 10203
at recent MLR or BP patch + Solairs fix for CR#6595936" 

But setting css diagwait from the default value of 0.5 to 13, makes them
immune, in either cases. Metalink has a note on setting this, which
needs clusterware to be down on all nodes. But can be set only on
10.2.0.3 and above. 

Regards 
Raj




Bjoern Rost <b.rost_at_portrix.net> 
Sent by: oracle-l-bounce_at_freelists.org 

01/02/2009 09:35 AM 

Please respond to
b.rost_at_portrix.net

To

Rajesh.Rao_at_jpmchase.com 

cc

oracle-l_at_freelists.org 

Subject

Re: Leap Second cause Cluster crashes for anyone?

 

 

 




Hi Rajesh

On Fri, 2009-01-02 at 15:00, Rajesh.Rao_at_jpmchase.com wrote:


> Nothing in the CRS logs. The OS logs have no messages except for

> Solaris booting up again. For clusters where we had changed the css

> diagwait to 13, no such issues.

> 

> Anyone else experience this?


We *might*. I am chasing some crash/reboot issues in a sol10 x64 cluster
that I couldn't explain so far. nothing in crs logs, nothing in
syslog/messages. Both machines use ntp to update local time. How do I
change diagwait?

But then again, i have another (very similar) cluster that does not show
these problems.

Bjoern

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Received on Fri Jan 02 2009 - 10:33:05 CST