这里记录一下linux的sudo简单配置过程，备后查。
1、root打开sudo配置文件
[root@centos ~]# visudo
2、sudo配置项
## Next comes the main part: which users can run what software on
## which machines (the sudoers file can be shared between multiple
## systems).
## Syntax:
##
## user MACHINE=COMMANDS
##
## The COMMANDS section may have other options added to it.
##
## Allow root to run any commands anywhere
root ALL=(ALL) ALL
mysql ALL=(ALL) ALL #配置mysql用户等同root用户执行的所有命令
3、配置mysql免密执行
## Read drop-in files from /etc/sudoers.d (the # here does not mean a comment)
#includedir /etc/sudoers.d
mysql localhost=(root) NOPASSWD:ALL
4、root修改mysql的密码
[root@centos ~]# passwd mysql
5、mysql添加mysql用户的sudo密码，sudo密码是第4部设置的mysql操作系统层的密码
-bash-4.1$ sudo uname
[sudo] password for mysql:
Linux
-bash-4.1$
6、查看sudo配置
[root@centos ~]# sudo -l
Matching Defaults entries for root on this host:
requiretty, !visiblepw, always_set_home, env_reset, env_keep="COLORS DISPLAY HOSTNAME HISTSIZE INPUTRC KDEDIR LS_COLORS",
env_keep+="MAIL PS1 PS2 QTDIR USERNAME LANG LC_ADDRESS LC_CTYPE", env_keep+="LC_COLLATE LC_IDENTIFICATION LC_MEASUREMENT
LC_MESSAGES", env_keep+="LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER LC_TELEPHONE", env_keep+="LC_TIME LC_ALL LANGUAGE LINGUAS
_XKB_CHARSET XAUTHORITY", secure_path=/sbin\:/bin\:/usr/sbin\:/usr/bin
User root may run the following commands on this host:
(ALL) ALL
[root@centos ~]#
7、mysql用户测试sudo是否正确
-bash-4.1$ sudo mkdir /test1
-bash-4.1$ ls -l /test1
total 0
-bash-4.1$ rm -rf /test1
rm: cannot remove `/test1': Permission denied
-bash-4.1$ sudo rm -rf /test1
-bash-4.1$ ls -l /test1
ls: cannot access /test1: No such file or directory
-bash-4.1$
linux的sudo配置完成！