How to Use TiDB's Built-in SQL Diagnostic Tools for Performance Tuning

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

Original topic: https://asktug.com/t/topic/63294

| username: rw12306

【TiDB Usage Environment】Production\Test Environment\POC
【TiDB Version】6.1
【Encountered Problem】
【Reproduction Path】What operations were performed to cause the problem
【Problem Phenomenon and Impact】

After following the steps in this article 【SOP 系列 12】TiUP 修改集群 IP 、Port 和目录 - TiDB 的问答社区, an error occurred when executing tiup cluster:v1.2.1 reload tidb-test -R pd --force

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The error is the same as in this post tidb 5.0.1 集群修改IP - TiDB 的问答社区. How can this be resolved?

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| username: Minorli-PingCAP | Original post link

If you don’t add --force, what happens? Refused is mostly a connection issue. Please check if the firewall on the corresponding node is turned off and if the port is open.