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

**URL:** <https://forums.percona.com/t/percona-shows-primary-unavailable-but-mongo-logs-dosnt-show-the-node-went-down/36160>\
**Category:** PMM 2.x\
**Tags:** pmm, percona, mongodb\
**Created:** [January 15, 2025, 1:31pm UTC](https://forums.percona.com/t/percona-shows-primary-unavailable-but-mongo-logs-dosnt-show-the-node-went-down/36160 "2025-01-15T13:31:51Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Dhivya](https://avatars.discourse-cdn.com/v4/letter/d/73ab20/32.png) [@Dhivya](https://forums.percona.com/u/Dhivya)\
**Post date:** [January 15, 2025, 1:31pm UTC](https://forums.percona.com/t/percona-shows-primary-unavailable-but-mongo-logs-dosnt-show-the-node-went-down/36160/1 "2025-01-15T13:31:51Z")

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## 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

 ![image](https://us1.discourse-cdn.com/flex019/uploads/percona1/original/3X/6/6/66a3a8331a34c98d3cfc39c3e45aefc5fb9956a6.png)

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

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**Author:** ![Ivan\_Groenewold](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/ivan_groenewold/32/6299_2.png) [@Ivan\_Groenewold](https://forums.percona.com/u/Ivan_Groenewold)\
**Post date:** [January 16, 2025, 11:37am UTC](https://forums.percona.com/t/percona-shows-primary-unavailable-but-mongo-logs-dosnt-show-the-node-went-down/36160/2 "2025-01-16T11:37:11Z")

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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

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<div class="post-metadata">

**Author:** ![Dhivya](https://avatars.discourse-cdn.com/v4/letter/d/73ab20/32.png) [@Dhivya](https://forums.percona.com/u/Dhivya)\
**Post date:** [January 20, 2025, 5:26am UTC](https://forums.percona.com/t/percona-shows-primary-unavailable-but-mongo-logs-dosnt-show-the-node-went-down/36160/3 "2025-01-20T05:26:01Z")

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Thanks for the response Ivan .Will check the OS metrics and update the findings.