Nagios Support Forum

Hi Support,

We received a lot of "memory usage is critical" alert these days.

And I ssh to the hosts, it seems like that os would temporarily cache available memory as it can.

I want to know what we should do to make Nagios XI skip cache memory?

Could you provide some steps? (maybe like, what plugin we need to change/ how to change the plugin instead of default one.)

target servers:
- os: all CentOS 7, 64-bit

Nagios XI Server:
- os: CentOS 7, 64-bit
- wizard: snmp linux only
- clean Nagios XI environment

If you are setting them up with the Linux Wizard, you can go to the CCM and edit the memory services so the $ARG2$ looks like this adding the -n flag

Hi Support,

I added '$ARG2$' in '>_commands' in ccm;

and added the '$ARG2$' in the memory check command.

But after clicked the 'Run Check Commnand', it still show physical memory is "Critical".
(Photo1 and 2)

My recommendation was assuming you were using the standard Linux Wizard with an agent.

Unfortunately there is no way to remove the cached memory on the SNMP wizard.

So, we can't change command (e.g. check_snmp_mem) to resolve this?

if so, we can close this issue, thanks!

axvers wrote:So, we can't change command (e.g. check_snmp_mem) to resolve this?

if so, we can close this issue, thanks!

Yes that would work.
e.g.