Service check timed out

[preethu.d]

Hi,

I am getting multiple service check timeout error ((Service check timed out after 60.01 seconds)) on a node in Nagios and it is auto-resolving in sometime. It is a windows server, and the issue is only for this servers, what is the reason for this issue and how this can be resolved.

Regards,
Preethu

[benjaminsmith]

Hi Preethu,

From your description, it sounds like the problem comes and goes. Typically in this type of situation, this is caused by a slow network to the remote host.

You can run a large number of ping checks to verify this, for example.

Code: Select all

 ping -c 100 192.168.23.111 > /tmp/ping_log_23.111.txt

Let me know the results of the test are.

Regards,
Benjamin

[preethu.d]

Hi Benjamin,

I have sent you the ping check results. Please check.

Regards,
Preethu

[benjaminsmith]

HI Preethu,

Thanks for sending that over, those numbers look okay. I think it must be failing on occasion.

I would recommend increasing the max check attempts to help smooth out occasional network congestion. This will help reduced false positives (getting an alert or notification when the service or host is okay).

max-checks.png

--Benjamin

[preethu.d]

Hi Benjamin,

Currently it is set as 5,1,1 if I change to 5,1,5 how frequently Nagios check the status ?

Regards,
Preethu

[ssax]

5,1,1

check_interval - checked every 5 minutes
retry_interval - if problem detected check every 1 minutes, max_check_attempts number of times
max_check_attempts - 1 time

5,1,5

check_interval - checked every 5 minutes
retry_interval - if problem detected check every 1 minutes, max_check_attempts number of times
max_check_attempts - 5 times

Benjamin is having you increase the max_check_attempts to try to get around false positives.

With 5,1,1 if a problem is detected it immediately will go to a hard state and send the notification.

With 5,1,5 if a problem is detected it will recheck it every 1 minute up to 5 times. If the service is still in a problem state on the last one it will then set it to a hard state, only then will the notification be sent. This will help stop false positives from notifying because the ones that resolve themselves would be SOFT states where notifications are not sent. Notifications are only sent on hard states.

See here:

https://assets.nagios.com/downloads/nag ... types.html
https://assets.nagios.com/downloads/nag ... tions.html

[preethu.d]

Thanks for the help.

Regards,
Preethu

[benjaminsmith]

Hi Preethu,

Let us know if you have further questions or if it's okay to close this topic.

-Benjamin

[preethu.d]

Hi Benjamin,

You can close the topic.

Thank you

Regards,
Preethu

[benjaminsmith]

HI Preethu,

Great. Thanks for the update.