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cybozu-go / moco

MySQL operator on Kubernetes using GTID-based semi-synchronous replication.

Home Page:https://cybozu-go.github.io/moco/

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mysqld-exporter no service

sona-yuan opened this issue · comments

commented

What

Describe what this issue should address.

How

Describe how to address the issue.

Checklist

  • Finish implementation of the issue
  • Test all functions
  • Have enough logs to trace activities
  • Notify developers of necessary actions
commented

The exporter sidecar should be accessed directly not via a Service because
each exporter exports metrics of the mysqld process of the same Pod.

Since there is a headless Service, you can access each exporter by something like:

  • moco-test-0.moco-test.svc:9104
  • moco-test-1.moco-test.svc:9104
  • ...

NB 9104 is the port number of mysqld-exporter.

commented

There is also an example scraping rule for Prometheus that collects
metrics from mysqld-exporter for all Pods.
https://github.com/cybozu-go/moco/blob/main/docs/metrics.md#scrape-rules