Regular expression proc.num[]

[kbentlage]

Hi There,

I want to use a regular expression with proc.num to get the number of child-processes of FPM-Pools. Because we have several pools that have the same string in them i need a regular expression that matches the exact string.
For example we have:
- PHP Pool: prod
- PHP Pool: prod_sitename1
- PHP Pool: prod_sitename2

When I use proc.num[] on "prod" i'll also get the processes of prod_sitename1 and prod_sitename2, i only need the count of the "prod" pool.

As of these documentation it should be possible to use a regex in the cmdline field of proc.num[]:

https://www.zabbix.com/documentation/current/manual/appendix/items/proc_mem_num_notes

I tried several things but i cannot get this to work. What i tried:

proc.num["php-fpm",,,"^(myPoolName$)"]
proc.num["php-fpm",,,"^myPoolName$"]
proc.num["php-fpm",,,"myPoolName$"]

All give "0" as result.

For the time being i resolved this issue with a system.run[] check which executes the following command which works perfectly:

system.run[ps -ef | grep php-fpm | grep myPoolName$ | wc -l]

I would live to have this fixed with the proc.num[] check because this is more "native" and less "dirty".

Please let me know what i can do to get this fixed.

Thanks!

[Hamardaban]

to read again: https://www.zabbix.com/documentation..._mem_num_notes
to do: proc.num[,,,"^.*myPoolName.*$"]
Most likely, your expression doesn't work because the regular expression handler treats $ as a special end-of-line character.

[kbentlage]

Hi Hamardaban,

I tried your suggestion, but it will still give the total amount of processes (including _sitename1 and _sitename2)

zabbix_agentd --test proc.num["php-fpm",,,"^.*myPoolName.*$"]

Seems like the $ does not work yet.

[Hamardaban]

You need to make the regex expression more precise
Show the output of the «ps -auxw | grep php-fpm»