What to do if the disk on the server where TiKV or TiFlash is located is almost full?

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

Original topic: 如果TiKV或TiFlash所在的服务器磁盘快要满的话,该怎么办?

| username: kgdxpr

If the disks on the servers where TiKV or TiFlash are located are about to be full, what should I do? Will adding servers help, and will the data files automatically balance across each server?

| username: 裤衩儿飞上天 | Original post link

Expanding nodes will automatically schedule over.

| username: h5n1 | Original post link

  1. In an emergency, clean up log files and placeholder files to free up some space.
  2. Expand capacity as soon as possible by adding more TiKV nodes.
| username: caiyfc | Original post link

Quickly scale out TiKV or TiFlash nodes. After scaling out, the cluster will automatically migrate data to the new nodes and ensure all data is balanced.

| username: 我是咖啡哥 | Original post link

In addition to scaling out, temporarily shortening the GC time is also an emergency measure if it is set too long. If the GC time is set too long, even if you drop or truncate a table, it will not immediately release space. I have encountered this issue before…

| username: Hacker_rETwjAga | Original post link

TiKV can add nodes, but adding nodes to TiFlash is useless; you can only increase disk space.