关于sshd服务无法开启的问题集合

SSHD服务开启问题集合

报错1

• 错误

:~$ systemctl restart sshd
Failed to restart sshd.service: Interactive authentication required.
See system logs and 'systemctl status sshd.service' for details.

• 解决：

sudo systemctl enable ssh.service

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错误2

• 错误

:~$ sudo sshd -t
/etc/ssh/sshd_config: No such file or directory

• 解决：

添加对应的/etc/ssh/sshd_config

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错误3

• 错误

:~$ sudo sshd -t
Privilege separation user sshd does not exist

• 解决：

sudo useradd --system sshd
sudo vim /etc/passwd （选择好对应的sshd路径，sshd:x:997:997::/usr/sbin/sshd:/bin/sh）

错误4

• 错误

:~$ sudo sshd -t
sshd: no hostkeys available -- exiting.

• 解决：

:~$ sudo ssh-keygen -A
ssh-keygen: generating new host keys: RSA DSA ECDSA ED25519

错误5

• 错误

:~$ sudo sshd -t
Missing privilege separation directory: /run/sshd

• 解决：

@:~$ sudo service sshd start
@:~$ systemctl status sshd
● ssh.service - OpenBSD Secure Shell server
     Loaded: loaded (/lib/systemd/system/ssh.service; enabled; vendor preset: enabled)
     Active: active (running) since Mon 2023-07-10 13:12:31 CST; 35s ago
       Docs: man:sshd(8)
             man:sshd_config(5)
    Process: 3680 ExecStartPre=/usr/sbin/sshd -t (code=exited, status=0/SUCCESS)
   Main PID: 3681 (sshd)
      Tasks: 1 (limit: 9487)
     Memory: 1.0M
     CGroup: /system.slice/ssh.service
             └─3681 sshd: /usr/sbin/sshd -D [listener] 0 of 10-100 startups

Jul 10 13:12:31 DESKTOP-SL9RQUV systemd[1]: Starting OpenBSD Secure Shell server...
Jul 10 13:12:31 DESKTOP-SL9RQUV sshd[3681]: Server listening on 0.0.0.0 port 22.
Jul 10 13:12:31 DESKTOP-SL9RQUV sshd[3681]: Server listening on :: port 22.
Jul 10 13:12:31 DESKTOP-SL9RQUV systemd[1]: Started OpenBSD Secure Shell server.