I've just installed and configured Monit to run on our 3rd webserver and
I can't appreciate the work you've put into this product. Its saved my
sleep schedule many times!
Now for the bad news. This 3rd server is acting funny. I've had a few
instances where it doesn't flag memory usage for the apache processes.
I've lowered the usage down to flag at >8kB, but it still doesn't flag,
even though its currently using >135kB. Perhaps I missed something?
Here's Monit running in the foreground in verbose mode:
'httpd_init' file existence check passed
'httpd_init' is regular file
'httpd_bin' file existence check passed
'httpd_bin' is regular file
'httpd' zombie check passed [status_flag=0000]
'httpd' PID has not changed since last cycle
'httpd' PPID has not changed since last cycle
'httpd' loadavg(1min) check passed [current loadavg(1min)=0.0]
'httpd' children check passed [current children=10]
'httpd' total mem amount of 138464kB matches resource limit [total mem
amount>8kB]
'httpd' cpu usage check passed [current cpu usage=0.4%]
'httpd' cpu usage check passed [current cpu usage=0.4%]
'httpd' succeeded connecting to INET[website.com:80] via TCP
'httpd' succeeded testing protocol [HTTP] at INET[website.com:80] via
TCP
And finally here's my monit config for httpd:
# Apache 2 (webserver)
# --------------------
check process httpd with pidfile /var/run/httpd.pid
start program = "/etc/rc.d/rc.httpd start"
stop program = "/etc/rc.d/rc.httpd stop"
if failed host website.com port 80 protocol HTTP
for 2 cycles
then restart
if cpu is greater than 60% for 2 cycles then alert
if cpu > 80% for 5 cycles then restart
# Testing Mem Usage / Not production.
if totalmem is greater than 8 kB for 5 cycles then restart
if children > 250 then restart
if loadavg(1min) greater than 10 for 8 cycles then restart
if 3 restarts within 5 cycles then timeout
group web
depends httpd_init
depends httpd_bin
check file httpd_init with path /etc/rc.d/rc.httpd
group web
check file httpd_bin with path /usr/sbin/httpd
group web
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