switch pmm clients to new pmm server

[jackber]

Hi,
i’ve been running new PMM server.

• both of pmm server has the same OS (suse SLES 12 sp2), username and password.
• i’ve changed parameters in /usr/local/percona/pmm-client/pmm.yml and restart service (pmm-admin restart)
• network check is OK:
  "# pmm-admin check-network
  PMM Network Status
  Server Address | [correct server IP]
  Client Address | [correct client IP]

• Connection: Client --> Server

---

SERVER SERVICE STATUS

---

Consul API OK
Prometheus API OK
Query Analytics API OK
Connection duration | 153.578µs
Request duration | 508.65µs
Full round trip | 662.228µs

No monitoring registered for this node identified as ‘[client name]’."

Which steps are missing to switch pmm clients to new server ?

[Michael_Coburn]

Hi jackber ,

The best approach is to remove all local monitoring and then re-add. The example below shows how to stop, remove, and re-add - note that in your case you probably want a MySQL, MongoDB, or ProxySQL stanza instead of just linux:metrics for removal, and re-addition:

pmm-admin stop --all
pmm-admin list
pmm-admin remove linux:metrics 
pmm-admin config --server
pmm-admin add linux:metrics

There is no state maintained on the client, rather they are passive listeners for incoming scrape requests from Prometheus. In your case, Consul on the new PMM instance isn’t aware of the host to be newly scraped so Prometheus never attempts to collect metrics. Hope this helps,

[jackber]

It’s correct. Thanks a lot !