PD node fails to start

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

Original topic: pd结点无法启动

| username: TiDBer_zarFUlCo

[TiDB Usage Environment] Production Environment
[TiDB Version] 6.1.6
[Reproduction Path] Restart the cluster
[Encountered Problem: Problem Phenomenon and Impact]

  1. After restarting the cluster using tiup-cluster restart, the dashboard is inaccessible.
  2. Checking with tiup-cluster display, the PD node shows as Down|UI.
  3. Checking the logs of the PD node, there are recurring errors.
    [Attachment: Screenshot/Logs/Monitoring]

    PD log fragment:
    pd.log (37.0 KB)
| username: 像风一样的男子 | Original post link

The simplest way is to directly shrink this PD node and then expand another one.

| username: tidb菜鸟一只 | Original post link

It looks like the files on the 10.2 PD node are corrupted. It is recommended to scale down this node and then scale it up again to see if it resolves the issue.

| username: xfworld | Original post link

First, switch the UI dashboard to another PD to ensure the dashboard is usable.

When considering the issue with PD, first check the PD logs to see what the problem is.

| username: Hacker007 | Original post link

Observe the logs to see if you can find a solution. If it doesn’t work, follow the first post’s suggestion; it is indeed the fastest.

| username: system | Original post link

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