Issues with the Required OpenSSH Version for TiDB 6.1

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

Original topic: Tidb6.1要求的openssh版本问题

| username: ling88yy

  1. The original cluster’s OpenSSH version was OpenSSH 7.4p1, upgraded to OpenSSH 9.0p1, and encountered SSH mutual trust issues when managing the cluster.
  2. Downgraded OpenSSH back to OpenSSH 7.4p1, and the cluster management was normal without SSH mutual trust errors.
    Please verify the OpenSSH version requirements for TiDB 6.1.
| username: ealam_小羽 | Original post link

According to this post, 4.0.11 already supports OpenSSH_8.8p. It is estimated that your issue is related to this, as the default ssh is builtin and does not match your version.

| username: ShawnYan | Original post link

It should be that the version is too new. You can refer to this: