 | | | How do I find out the cause for the hang? | How do I find out the cause for the hang? 2006-07-19 - By David.Knight@(protected)
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Do you have the magic SysRq key enabled in the /etc/sysctl.conf ?
http://kbase.redhat.com/faq/FAQ_80_4154.shtm
I had the same issue where I would try to log in and the system would hang
at the user prompt. It turned out to be the audit daemon hitting a
threshold on the /var file system space available. There is a config file
in /etc/audit/audit.conf that redhat recommended us modify to:
/usr/sbin/audbin -S /var/log/audit.d/save.%u -C -T 7%
If you as me this is a bug in the daemon but redhat insisted that it was
working as designed.
If it is the same issue then you might see some auditbin or auditd error
in the messages file around the time that the system hung.
Here is the Bugzilla:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=158591
Other possible causes that I found were in regards to IO timeouts or the
inability to read a file system. The sysrq info should help find more
info.
Hope this helps,
David Knight
"unix syzadmin" <unixsyzadmin@(protected)>
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07/19/2006 03:53 AM
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Subject
How do I find out the cause for the hang?
Hi,
We have a RHEL AS 3 Update 6 server. This server seems to hang everyday
since a couple of days.
I tried to login (using telnet/ssh) when the users reported the problem.
After I type the username at the login prompt the system seems to hang.
The only option for me would be to go to the lab and power-off and
power-on.
What could be the possible causes?. How do I find out the cause for the
hang?. Please suggest.
# more /etc/redhat-release
Red Hat Enterprise Linux AS release 3 (Taroon Update 6)
Thanks & Regards--
Taroon-list mailing list
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<br><font size=2 face="sans-serif">Do you have the magic SysRq key enabled
in the /etc/sysctl.conf ?</font>
<br><font size=2 face="sans-serif">http://kbase.redhat.com/faq/FAQ_80_4154.shtm
</font>
<br>
<br><font size=2 face="sans-serif">I had the same issue where I would try
to log in and the system would hang at the user prompt. It turned out to
be the audit daemon hitting a threshold on the /var file system space available.
There is a config file in /etc/audit/audit.conf that redhat recommended
us modify to: /usr/sbin/audbin -S /var/log/audit.d/save.%u -C -T 7% </font>
<br><font size=2 face="sans-serif">If you as me this is a bug in the daemon
but redhat insisted that it was working as designed.</font>
<br><font size=2 face="sans-serif">If it is the same issue then you might
see some auditbin or auditd error in the messages file around the time
that the system hung.</font>
<br><font size=2 face="sans-serif">Here is the Bugzilla:</font>
<br><a href="https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=158591"><font
size=3 color=blue><u>https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id
=158591</u></font></a>
<br>
<br><font size=2 face="sans-serif">Other possible causes that I found were
in regards to IO timeouts or the inability to read a file system. The sysrq
info should help find more info.</font>
<br>
<br><font size=2 face="sans-serif">Hope this helps,</font>
<br><font size=2 face="sans-serif">David Knight</font>
<br>
<br>
<br>
<br>
<br>
<table width=100%>
<tr valign=top>
<td width=40%><font size=1 face="sans-serif"><b>"unix syzadmin"
<unixsyzadmin@(protected)></b> </font>
<br><font size=1 face="sans-serif">Sent by: taroon-list-bounces@(protected)<
/font>
<p><font size=1 face="sans-serif">07/19/2006 03:53 AM</font>
<table border>
<tr valign=top>
<td bgcolor=white>
<div align=center><font size=1 face="sans-serif">Please respond to<br>
"Discussion of Red Hat Enterprise Linux 3 (Taroon)" <taroon-list
@(protected)></font></div></table>
<br>
<td width=59%>
<table width=100%>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">To</font></div>
<td><font size=1 face="sans-serif">"Discussion of Red Hat Enterprise
Linux 3 (Taroon)" <taroon-list@(protected)></font>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">cc</font></div>
<td>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">Subject</font></div>
<td><font size=1 face="sans-serif">How do I find out the cause for the
hang?</font></table>
<br>
<table>
<tr valign=top>
<td>
<td></table>
<br></table>
<br>
<br>
<br><font size=3>Hi,</font>
<br><font size=3> </font>
<br><font size=3>We have a RHEL AS 3 Update 6 server. This server
seems to hang everyday since a couple of days.</font>
<br><font size=3>I tried to login (using telnet/ssh) when the users reported
the problem. After I type the username at the login prompt the system
seems to hang.</font>
<br><font size=3>The only option for me would be to go to the lab and power-off
and power-on.</font>
<br><font size=3> </font>
<br><font size=3>What could be the possible causes?. How do I find
out the cause for the hang?. Please suggest.</font>
<br><font size=3> </font>
<br><font size=3># more /etc/redhat-release<br>
Red Hat Enterprise Linux AS release 3 (Taroon Update 6)</font>
<br><font size=3> </font>
<br><font size=3>Thanks & Regards</font><font size=2><tt>--<br>
Taroon-list mailing list<br>
Taroon-list@(protected)<br>
https://www.redhat.com/mailman/listinfo/taroon-list</tt></font>
<br>
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