Apache/performance
< Apache
Get Stats
To get statistics, you'll need to potentially modify your Apache configuration. For Ubuntu, it's as easy as a2enmod status (and reload the server with service apache2 reload)
Cli
# Using wget isn't advised because you'll get html output. However, if you simply append the ?auto querystring, you'll get machine readable output.
wget http://localhost/server-status -O -
curl localhost/server-status?auto
# Ubuntu
apache2ctl fullstatus
# Older/RedHat
apachectl fullstatus
Or you can edit /mods.enabled/status to get it from the browser. For a machine readable, condensed version, just append the auto querystring argument:
e.g. http://example.com/server-status?auto
Killing Stuck Processes
This script from Alain Kelder shows how you can identify and kill long-running processes without restarting Apache. I ran into this problem with a misbehaving Mantis plugin.
#/bin/bash
GetAllWorkers()
{
AllWorkers=$(apache2ctl fullstatus | awk '/^Srv /,/^$/ {print}')
}
GetStuckWorkers()
{
StuckWorkers=$(echo "$AllWorkers" | awk '$4 == "W" && $6 > 60 && $7 == 0 && $8 == "0.0" {print}')
header=$(echo "$AllWorkers" | head -n 1)
}
GetStuckPIDs()
{
StuckPIDs=$(echo "$AllWorkers" | awk '$4 == "W" && $6 > 60 && $7 == 0 && $8 == "0.0" {print$2}')
}
Show()
{
echo "--------------------------------"
echo " Stopped on $(date +%F\ %T)"
echo "--------------------------------"
echo "$header"
echo "$StuckWorkers"
}
GetAllWorkers && GetStuckPIDs
if [ -n "$StuckPIDs" ]; then
for PID in $StuckPIDs; do
echo stopping $PID with SIGTERM
kill $PID
done
GetStuckWorkers
Show | mail -s "$(basename $0) executed on $(hostname -s)" root
Show >> /path/to/ksaw.log
fi