Percona shows primary unavailable but mongo logs dosn't show the node went down

[Dhivya]

Description:

Often we see a node unavailable in percona but when checking mongo logs there is no sign of node went down.

Version:

pmm :2.4
mongodb 4.4

mongo logs dosn’t have any error msg or warnings stating the node went down .
The same time application team reported they received connection time out for both the routers.
Can someone help to identify the issue.

Thanks & Regards,
Dhivya.K

[Ivan_Groenewold]

Hi, check also the OS level logs. It is likely there was a network blip or something happening that prevented the pmm-agent from getting the metrics briefly