This service is stale issue

Troubleshooting
1

CMK version: Raw

Hi, I’ve a question withe “Stale “issue, my monitoring service always show the “the service is stale, it has no data receive for the last 1.5 check”. I am sure the connection between the checkmk and monitored device is fine , no packet lost , why it keeps show this alert message?

2

that means this service has not gettering data’s in this time space …

3

Thanks but that’s weird , as i am using my UAT env, both the Checkmk and monitored host are VM mahchine on my PC..

4

Hi Ming,

The “Stale” message in Checkmk 2.4 (and all recent versions) is by design. It simply means no fresh data has been received for 1.5 check intervals (default = 90 seconds with a 60 s interval).

This is not a network/packet-loss problem — even if ping works perfectly. It means the data source (Check_MK agent on port 6556, SNMP, or a plugin) is not delivering current values.

Quick fix steps:

  1. Look at the main Check_MK service of the host.
  2. On the Checkmk server run: cmk --check (add -v for details)

This almost always shows the real cause (agent down, firewall, slow plugin, timeout…).

You can raise the staleness value in Setup → General → Global settings → User interface if you want, but fixing the root cause is better.

Sources:

Post the output of the cmk --check command and I’ll help you further!

Bernd

5

i don’t know where to run the step 2 cmk –check command. please advise

image

6

in your CMK server instance → go to the CLI

switcht to site user
omd su <SITENAME>

then as site user

cmk -dvv YOURHOST

Checkmk on the command line - Understanding and using commands

If you are working with Check_MK you need to have a deeper understanding how the CLI is working … and the cmk command is the important one

Greetz