centos 报错 SQLSTATE[HY000] [2002] Permission denied

因为没有关闭selinux，通常情况下载安装完CentOS7后，默认情况下SElinux是启用状态。

[root@rdo ~]# sestatus

SELinux status: enabled

SELinuxfs mount: /sys/fs/selinux

SELinux root directory: /etc/selinux

Loaded policy name: targeted

Current mode: enforcing

Mode from config file: enforcing

Policy MLS status: enabled

Policy deny_unknown status: allowed

Max kernel policy version: 28

 

如果要临时关闭，可以执行：setenforce 0

此时状态如下：

 

[root@rdo ~]# sestatus

SELinux status: enabled

SELinuxfs mount: /sys/fs/selinux

SELinux root directory: /etc/selinux Loaded policy name: targeted

Current mode: permissive

Mode from config file: enforcing

Policy MLS status: enabled

Policy deny_unknown status: allowed Max kernel policy version: 28

 

如果要永久关闭，可以修改配置文件/etc/selinux/config，将原SELINUX=enforcing修改为SELINU=disabled。

[root@rdo ~]# cat /etc/selinux/config

# This file controls the state of SELinux on the system.

# SELINUX= can take one of these three values:

# enforcing - SELinux security policy is enforced.

# permissive - SELinux prints warnings instead of enforcing.

# disabled - No SELinux policy is loaded.

#SELINUX=enforcing SELINUX=disabled

# SELINUXTYPE= can take one of three two values:

# targeted - Targeted processes are protected,

# minimum - Modification of targeted policy. Only selected processes are protected.

# mls - Multi Level Security protection. SELINUXTYPE=targeted

 

修改该配置文件也可以执行下面的命令来完成：

sed -i '/SELINUX/s/enforcing/disabled/' /etc/selinux/config

修改完成后，保存重启，重启状态如下：

[root@rdo ~]# sestatus

SELinux status: disabled

 

原文链接：https://blog.youkuaiyun.com/eclothy/article/details/48265445