On Mon, Jun 08, 2009 at 03:56:48PM +0100, Gaby Vanhegan wrote:
> I have a machine that is running 4.3 bsd.mp, MySQL and one single site
> of PHP scripts which keep crashing. The frustrating thing is that it
> doesn't panic the kernel so I can't get any DDB output, the machine
> just locks up. Looking at it over the KVM it just shows the login
> prompt with the cursor flashing but not responding.
<SNIP>
> Any suggestions about how I can try and figure out what's killing it?
My guess would be since you mention 4.3 and Apache, that you are running
out of amap.
$ vmstat -m | grep '^ *UVM amap'
Compare MemUse to the Limit. Since updating to 4.5 I haven't had the
problem.
This worked for Nagios.
* * * * * /usr/local/libexec/nagios/check_amap > /dev/null ||
/home/andrew/apachectl stop wait start
#!/bin/sh
. /usr/local/libexec/nagios/utils.sh
_sizes=`vmstat -m | awk '/^ *UVM amap/ { gsub("K", " "); print $4 " " $6}'`
_free=`dc -e "5 k ${_sizes} sm sc lm lc - lm / 100 * f" | sed -e 's/\.*0*$//'`
if [ ${_free%.*} -lt 25 ]; then
echo WARNING: less than 25% amap free [${_free}%]!
exit $STATE_WARNING
fi
if [ ${_free%.*} -lt 10 ]; then
echo CRITICAL: less than 10% amap free [${_free}%]!
exit $STATE_CRITICAL
fi
echo OK: [${_free}%] free
exit $STATE_OK
and you probably need
$ diff -u /usr/sbin/apachectl apachectl
--- /usr/sbin/apachectl Tue May 5 21:44:28 2009
+++ apachectl Wed Nov 19 09:49:28 2008
@@ -153,6 +153,19 @@
fi
fi
;;
+ wait)
+ echo -n "$0 $ARG: "
+ while [ $RUNNING -eq 1 ]; do
+ if kill -0 $PID 2>/dev/null ; then
+ #echo -n .
+ sleep 1
+ else
+ STATUS="httpd (pid $PID) not running"
+ RUNNING=0
+ fi
+ done
+ echo ' httpd stopped'
+ ;;
status)
$LYNX $STATUSURL | awk ' /process$/ { print; exit } { print } '
;;
l8rZ,
--
andrew - ICQ# 253198 - Jabber: [email protected]
BOFH excuse of the day: Our ISP is having {switching,routing,SMDS,frame
relay} problems
