BR Grafana Backup & Import Query expression error

[hanbinbin731]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

There is a query expression error in the tidb_cluster variables option of the Grafana Backup & Import dashboard settings.

2. What did you expect to see? (Required)

label_values(tikv_engine_size_bytes{k8s_cluster="$k8s_cluster"}, tidb_cluster)

3. What did you see instead (Required)

label_values(tikv_engine_size_bytes{k8s_cluster="$k8s_cluster", tidb_cluster)

4. What is your TiDB version? (Required)

v8.1.1、v8.5.1

--------------------------------+
| tidb_version() |
+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Release Version: v8.1.1
Edition: Community
Git Commit Hash: a7df4f9
Git Branch: HEAD
UTC Build Time: 2024-08-22 05:50:03
GoVersion: go1.21.13
Race Enabled: false
Check Table Before Drop: false
Store: tikv |
+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)