Backup Schedule Runs Unsteadily

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1

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This topic has been translated from a Chinese forum by GPT and might contain errors.

Original topic: backup schedule运行不稳定

| username: liyuntang

[Test Environment] Testing environment
[TiDB Version] v7.1.0. Operator version is 1.4.6
[Reproduction Path] Create a TiDB cluster in a k8s environment using tc resources, then modify the backup schedule time
[Encountered Issues: Symptoms and Impact]
Symptoms:
After modifying the backup schedule time, sometimes a backup task is generated, and sometimes no backup task is generated.
Issues:

  1. Why does modifying the backup schedule time sometimes generate a backup task?
  2. Why does it sometimes generate a backup task and sometimes not?
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| username: tidb狂热爱好者 | Original post link

You can see the backup process on the dashboard Grafana. If TiKV OOMs, the backup will stop. Check the reason.

3
| username: liyuntang | Original post link

It should not be this issue, all TiKV pods are running normally.

4
| username: liyuntang | Original post link

This issue sometimes generates backups and sometimes does not, so it seems to be caused by the triggering mechanism.

5
| username: TiDBer_3Cusx9uk | Original post link

Check if it is caused by insufficient memory (OOM).

6
| username: TIDB-Learner | Original post link

Passing by, learning.

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| username: TiDBer_7S8XqKfl | Original post link

Learned a lot, thank you for sharing.