<font size=1 color=#800080 face="sans-serif">----- Forwarded by Chuck
Carmack/Rochester/IBM on 05/27/2015 08:35 AM -----</font>
<br>
<br><font size=1 color=#5f5f5f face="sans-serif">From:
</font><font size=1 face="sans-serif">Chuck Carmack/Rochester/IBM</font>
<br><font size=1 color=#5f5f5f face="sans-serif">To:
</font><font size=1 face="sans-serif">users@clusterlabs.org</font>
<br><font size=1 color=#5f5f5f face="sans-serif">Date:
</font><font size=1 face="sans-serif">05/22/2015 07:31 AM</font>
<br><font size=1 color=#5f5f5f face="sans-serif">Subject:
</font><font size=1 face="sans-serif">Good idea to
enable Pacemaker blackbox by default?</font>
<br>
<hr noshade>
<br>
<br><tt><font size=3>Hi, thanks for the answers. Yes I'm thinking
about auto-dumping. Would this dump every time pacemaker detects
any error, such as a timeout, resource agent error, resource agent
in wrong state, etc? Or does it only dump for pacemaker internal
errors? I don't want frequent auto-dumping.</font></tt>
<br>
<br><tt><font size=3>I'm looking for a way to debug problems that can't
be debugged with /var/log/messages. If most problems can be debugged with
/var/log/messages then maybe default blackbox isn't worth it.es</font></tt>
<br>
<br><tt><font size=3>Can you say if the performance impact will be noticeable?</font></tt>
<br>
<br>
<br><tt><font size=3>><i> On 14 May 2015, at 4:17 am, Chuck Carmack
<</i></font></tt><a href=http://clusterlabs.org/mailman/listinfo/users><tt><font size=3 color=blue><i><u>carmack
at us.ibm.com</u></i></font></tt></a><tt><font size=3><i>> wrote:<br>
</i>><i> <br>
</i>><i> Hi - <br>
</i>><i> <br>
</i>><i> I'm thinking of enabling the blackbox by default in production
environments (ie. customer env). This seems like a good way to capture
detailed debug logs at the time of error, without enabling debug logging
all the time. I would have a cron job to prune /var/lib/pacemaker/blackbox
in case too many files are generated. <br>
</i><br>
Ah, you’re talking about the auto-dumping when we log an error?<br>
<br>
><i> <br>
</i>><i> Is there a reason this is *not* a good idea? Does blackbox
impact cluster performance? <br>
</i><br>
There will be some impact, all the arguments need to be marshalled etc.</font></tt>