CentOS 7 开机自启动ssh服务

2017-12-16 tech linux systemd 2 mins 943 字

systemctl enable sshd

另外我在某台机器上遇到了一个错误，始终无法启动 ssh，使用 systemctl status sshd.service，内容如下：

sshd.service - OpenSSH server daemon
  Loaded: loaded (/usr/lib/systemd/system/sshd.service; enabled; vendor preset: enabled)
  Active: activating (auto-restart) (Result: exit-code) since Wed 2017-12-27 17:38:43 CST; 9s ago
    Docs: man:sshd(8)
          man:sshd_config(5)
 Process: 6860 ExecStart=/usr/sbin/sshd -D $OPTIONS (code=exited, status=255)
Main PID: 6860 (code=exited, status=255)

Dec 27 17:38:43 adsl-172-10-1-100.dsl.sndg02.sbcglobal.net systemd[1]: Failed to start OpenSSH server daemon.
Dec 27 17:38:43 adsl-172-10-1-100.dsl.sndg02.sbcglobal.net systemd[1]: Unit sshd.service entered failed state.
Dec 27 17:38:43 adsl-172-10-1-100.dsl.sndg02.sbcglobal.net systemd[1]: sshd.service failed.

使用 journalctl -xe 得到了有用的信息：

/var/empty/sshd must be owned by root and not group or world-writable.

发现 /var/empty/sshd 文件的属性为777.改为755即可：

chmod 755 /var/empty/sshd