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This topic has been translated from a Chinese forum by GPT and might contain errors.Original topic: tikv scale-in 后处于 Tombstone 因机器无法通信，导致无法成功执行 prune 命令
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username: withseid
Background: Machine 37 is malfunctioning and cannot establish an SSH connection, so the TiKV node needs to be taken offline.
After executing the scale-in command, the TiKV node shows as Tombstone.
When executing the tiup cluster prune cluster_name command, the following error is reported. This error is also due to the inability to connect via SSH.
Error: failed to destroy tombstone: failed to stop tikv: failed to stop: 10.20.70.37 tikv-20160.service, please check the instance's log(/ssd/tidb-deploy/tikv-20160/log) for more detail.:executor.ssh.execute_failed: Failed to execute command over SSH for 'tidb@10.20.70.37:22' {ssh_stderr: , ssh_stdout: , ssh_command: export LANG=C; PATH=$PATH:/bin:/sbin:/usr/bin:/usr/sbin/usr/bin/sudo -H bash -c "systemctl daemon-reload && systemctl stop tikv-20160.service"}, cause: ssh: handshake failed: read tcp 10.20.70.39:33600->10.20.70.37:22: read: connection reset by peer
Verbose debug logs have been written to /home/tidb/.tiup/logs/tiup-cluster-debug-2022-06-29-01-32-17.log.
Error: run `/home/tidb/.tiup/components/cluster/v1.7.0/tiup-cluster` (wd:/home/tidb/.tiup/data/TA6dw59) failed: exit status 1
Besides the prune command, what other methods can be used to take the TiKV node in Tombstone status offline?
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