RE: weird behavior when pulling memory

[Richard Placek]

I must have been excited that it was almost Friday… I just noticed that it was catching, just needed to cycle through 5 cycles before it was flagged.

 

All is well.  :)

 

From: address@hidden [mailto:address@hidden On Behalf Of Richard Placek
Sent: Thursday, August 23, 2007 4:46 PM
To: address@hidden
Subject: weird behavior when pulling memory

 

I’ve just installed and configured Monit to run on our 3^rd 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 3^rd 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