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SSH启动失败解决方法

时间:2023-06-02 16:16:41 来源: 人气:

   VPS是3个人合租共用的,不知道谁操作了什么导致SSH启动失败,一直连接不上刚开始以为系统坏了呢,后面通过VPS终端登陆上去发现SSH服务没在运行,于是尝试运行SSHD发现出现如下错误:,  Starting sshd:,  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@,  @ WARNING: UNPROTECTED PRIVATE KEY FILE! @,  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@,  Permissions 0777 for ‘/etc/ssh/ssh_host_rsa_key’ are too open.,  It is recommended that your private key files are NOT accessible by others.,  This private key will be ignored.,  bad permissions: ignore key: /etc/ssh/ssh_host_rsa_key,  Could not load host key: /etc/ssh/ssh_host_rsa_key,  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@,  @ WARNING: UNPROTECTED PRIVATE KEY FILE! @,  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@,  Permissions 0777 for ‘/etc/ssh/ssh_host_dsa_key’ are too open.,  It is recommended that your private key files are NOT accessible by others.,  This private key will be ignored.,  bad permissions: ignore key: /etc/ssh/ssh_host_dsa_key,  Could not load host key: /etc/ssh/ssh_host_dsa_key,  Disabling protocol version 2. Could not load host key,  sshd: no hostkeys available — exiting.,  [FAILED],  解决方法:,  #chmod 600 sshd_config ssh_host_dsa_key ssh_host_key ssh_host_rsa_key,  #chmod 620 moduli,  #chmod 644 ssh_config ssh_host_dsa_key.pub ssh_host_key.pub ssh_host_rsa_key.pub,  #service sshd start,  再次出现如下错误:,  [root@bailongjun ssh]# service sshd restart,  Stopping sshd: [FAILED],  Starting sshd: /var/empty/sshd must be owned by root and not group or world-writable.,  [FAILED],  在终端上直接登录,问题显示如下:,  /var/empty/sshd must be owned by root and not group or world-writable.,  问题:,  Linux上的SSH无法启动,  报告/var/empty/sshd must be owned by root and not group or world-writable.,  解决办法:,  首先通过物理终端进入到linux上,手工检查ssh发现没运行,  -bash-2.05b# /etc/init.d/sshd status,  sshd is stopped,  手工启动服务,发现报告权限错误。,  -bash-2.05b# /etc/init.d/sshd start,  Starting sshd:/var/empty/sshd must be owned by root and not group or world-writable.,  [FAILED],  -bash-2.05b#,  使用rpm -V 命令可检查到ssh的软件包正常,但某个目录的属主错误。,  -bash-2.05b# rpm -V openssh-server,  S.5….. c /etc/ssh/sshd_config,  …..U.. /var/empty/sshd,  -bash-2.05b#,  经查看发现这个目录的属主不是root,所以启动ssh报错,  -bash-2.05b# ls -ld /var/empty/sshd/,  d–x–x–x 2 vu00106 root 1024 Feb 2 2005 /var/empty/sshd/,  -bash-2.05b#,  修改为root属主,启动成功,  -bash-2.05b# chown root /var/empty/sshd/,  -bash-2.05b# /etc/init.d/sshd start,  Starting sshd: [ OK ],  -bash-2.05b#,  至此问题修复。,  另外,还可以尝试:,  这个是权限的问题,  可采取以下两步解决,  chown -R root.root /var/empty/sshd,  chmod 744 /var/empty/sshd,  service sshd restart,  就可以解决上述的问题。,

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