# We are getting the error in pmm server

**URL:** <https://forums.percona.com/t/we-are-getting-the-error-in-pmm-server/27021>\
**Category:** PMM 2.x\
**Tags:** pmm\
**Created:** [December 8, 2023, 9:49am UTC](https://forums.percona.com/t/we-are-getting-the-error-in-pmm-server/27021 "2023-12-08T09:49:02Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Aditya1](https://avatars.discourse-cdn.com/v4/letter/a/ea5d25/32.png) [@Aditya1](https://forums.percona.com/u/Aditya1)\
**Post date:** [December 8, 2023, 9:49am UTC](https://forums.percona.com/t/we-are-getting-the-error-in-pmm-server/27021/1 "2023-12-08T09:49:02Z")

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PMM server error - Failed to establish two-way communication channel: No Agent with ID “/agent\_id/fbf9eb0a-3d82-46fe-8b31-f4f7d008c3ce”  
Let me know how we can solve this error as our grafana is not working. Docker and pmm agent is working.

[root@MMFSL-PMM-TOOL docker]# systemctl status pmm-agent.service  
● pmm-agent.service - pmm-agent  
Loaded: loaded (/usr/lib/systemd/system/pmm-agent.service; enabled; vendor preset: disabled)  
Active: active (running) since Fri 2023-12-08 12:50:46 IST; 2h 8min ago  
Main PID: 1172441 (pmm-agent)  
Tasks: 15 (limit: 151945)  
Memory: 12.8M  
CGroup: /system.slice/pmm-agent.service  
└─1172441 /usr/sbin/pmm-agent --config-file=/usr/local/percona/pmm2/config/pmm-agent.yaml

Dec 08 14:56:38 MMFSL-PMM-TOOL pmm-agent[1172441]: ERRO[2023-12-08T14:56:38.533+05:30] Failed to establish two-way communication channel: No Agent with ID "/agent\_id/\>  
Dec 08 14:56:51 MMFSL-PMM-TOOL pmm-agent[117244

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**Author:** ![nurlan](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/nurlan/32/1523_2.png) [@nurlan](https://forums.percona.com/u/nurlan)\
**Post date:** [December 8, 2023, 11:47am UTC](https://forums.percona.com/t/we-are-getting-the-error-in-pmm-server/27021/2 "2023-12-08T11:47:38Z")

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Hello, seems like your pmm-agent can’t connect to PMM Server, because PMM server doesn’t have any records about this pmm-agent being registered. Have you made any manipulations with PMM Server recently? Could you check if you have this pmm-agent ID in PMM inventory?  
The simplest way to fix the problem is to re-register your pmm-agent and add existing services.

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**Author:** ![Aditya1](https://avatars.discourse-cdn.com/v4/letter/a/ea5d25/32.png) [@Aditya1](https://forums.percona.com/u/Aditya1)\
**Post date:** [December 8, 2023, 1:56pm UTC](https://forums.percona.com/t/we-are-getting-the-error-in-pmm-server/27021/3 "2023-12-08T13:56:36Z")

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Can you please share me the commands for checking the same ?

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**Author:** ![nurlan](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/nurlan/32/1523_2.png) [@nurlan](https://forums.percona.com/u/nurlan)\
**Post date:** [December 8, 2023, 3:25pm UTC](https://forums.percona.com/t/we-are-getting-the-error-in-pmm-server/27021/4 "2023-12-08T15:25:30Z")

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it’s in UI [PMM Inventory - Percona Monitoring and Management](https://docs.percona.com/percona-monitoring-and-management/details/dashboards/dashboard-inventory.html)