修改usr权限后sudo命令无法使用问题 sudo: fatal error, unable to load plugins

报错：

[appgroup@host etc]$ sudosu- appsudo: error in/etc/sudo.conf, line 19 whileloading plugin "sudoers_policy"sudo: /usr/libexec/sudo/sudoers.so must be only be writable by ownersudo: fatal error, unable to load plugins

解决方法：

chmod644 /usr/libexec/sudo/sudoers.sochmod644 /usr/libexec/sudo/sudo_noexec.so

错误操作

用root用户chmod 777 -R 更改了/etc文件夹下的所有文件的权限，当然包括sudoers的权限，所以导致sudo报错

sudo: /etc/sudoers is world writable
sudo: no valid sudoers sources found, quitting
sudo: unable to initialize policy plugin

修改权限

chmod 440 /etc/sudoers
chmod 775 /etc/sudoers.d
chmod 440 /etc/sudoers.d/README