Linux給普通用戶sudo權限

直接編輯/etc/sudoer提示文件只讀

查看該文件權限，發現是440，於是降低該文件權限。

#查看文件權限
[root@master sunny-test]# ls -l /etc/sudoers
-r--r-----. 1 root root 3938 Apr 11  2018 /etc/sudoers
#添加寫權限
[root@master sunny-test]# chmod u+w /etc/sudoers
[root@master sunny-test]# ls -l /etc/sudoers
-rw-r-----. 1 root root 3938 Apr 11  2018 /etc/sudoers

在此處加入sudo免密

修改後，再將文件權限變爲440
chmod 440 /etc/sudoers

#修改sudoers文件前，使用sudo命令需要輸入密碼
[ttop.sit@master ~]$ sudo ls

We trust you have received the usual lecture from the local System
Administrator. It usually boils down to these three things:

    #1) Respect the privacy of others.
    #2) Think before you type.
    #3) With great power comes great responsibility.

[sudo] password for ttop.sit:
。。。省略。。。

#修改sudoers文件後，使用sudo命令不再需要密碼
[ttop.sit@master ~]$ sudo ls
[ttop.sit@master ~]$ sudo docker ps
CONTAINER ID        IMAGE                  COMMAND                  CREATED             STATUS              PORTS               NAMES
2647a6da08ee        6e4bffa46d70           "kube-controller-man…"   3 weeks ago         Up 3 weeks                              k8s_kube-controller-manager_kube-controller-manager-master_kube-system_c3fad56eae1f09ad7319dfa87a1ba6c4_3
c4d289e1a83a        ebac1ae204a2           "kube-scheduler --au…"   3 weeks ago         Up 3 weeks