Date: Wed, 24 Jun 2009 18:42:17 -0600 From: asparks at doublesparks.net To: hobbit at hswn.dk Subject: Re: [hobbit] Debugging issues with bb-histlog.sh on 4.3.0
Ralph Mitchell wrote:
On Wed, Jun 24, 2009 at 7:24 PM, Alan Sparks
wrote:
T.J. Yang wrote:
I am experiencing same problem but it is on a 4.2.0 server. If you like, we can work together to debug this issue. This bug is listed on my hobbit deployment todo list .
From: "Alan Sparks"
I've some "random" failures on bb-histlog.sh, viewing items in the bb2 event log. Some work as expected, but some when clicked appear to do nothing. Hitting the URL for that (say
http://den2sch17/hobbit-cgi/bb-histlog.sh?HOST=den1ws063&SERVICE=nfs&TIMEBUF... )
with curl shows a zero-length reply. Checking the Apache error log shows "Premature end of script headers: bb-histlog.sh, referer: http://den2sch17/hobbit/bb2.html". I have found no core files left behind.
Well, I have mixed luck running under GDB... looking at the code, saw it was trying to get the CGI info from the environment so set some environment variables to fake up enough CGI environment to get it to run. But mostly wound up getting segfaults in expand_env on the HTMLCONTENTTYPE stuff.
But I stumbled upon something that fixed my problem -- but not sure why. I edited the cgi-bin/bb-histlog.sh file, and added "cd /tmp" before the meat of the script. For some reason, I now seem to have no issues.
Perhaps that ought to be "cd $BBTMP" instead?? Keep all Xymon stuff in one place.
Ralph Mitchell
BBTMP is not defined when this script runs...
Following is my debugging of my hobbit server implementation(using slightly different paths). bb-hostsvc.sh has two lines of code.
- ". /etc/opt/hobbitserver42/hobbitcgi.cfg"
- "exec /opt/hobbitserver42/bin/hobbitsvc.cgi $CGI_SVC_OPTS"
$CGI_SVC_OPTS variable got declared in hobbitcgi.cfg as following
CGI_SVC_OPTS="--env=/etc/opt/hobbitserver42/hobbitserver.cfg --no-svcid --history=top" and in hobbitserver.cfg, BBTMP is declared also.
So I don't see why declaring BBTMP can help. but I did go ahead and re-declared BBTMP variable in bb-histlog.sh. The premature error message still showing in apache error_log file. And I do see a core file under cig-bin and file command shows it is from hobbitsvc.cgi command.
core: ELF 32-bit MSB core file SPARC Version 1, from 'hobbitsvc.cgi'
I am using Sun's compiler without -g option, thus recompiling with -g is needed to proceed with dbx command.
tj
-Alan
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