metrics: use tidb_cluster label get variable values

pingcap / tidb-lightning

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metrics: use tidb_cluster label get variable values #559

Closed zjj2wry closed 3 years ago

zjj2wry commented 3 years ago

Signed-off-by: zhengjiajin zhengjiajin@pingcap.com

What problem does this PR solve?

The latest version of tidb-operator will use the instance name as the cluster label. The previous expression uses the cluster label got the value of the tidb_cluster variable. It will cause Grafana can not to display the data.

What is changed and how it works?

Check List

Tests

No code

Side effects

No effects

Related changes

https://github.com/pingcap/tidb/pull/22557

zjj2wry commented 3 years ago

/assign @kennytm @glorv

kennytm commented 3 years ago

Lgtm

glorv commented 3 years ago

LGTM