MySql链接失败(Linux-CentOS)

在LNMP使用过程中,使用mysqli_connect()链接mysql数据库时,出现以下错误
Could not connect: Can't connect to MySQL server on '127.0.0.1' (13)
使用下面命令查看时

#getsebool -a | grep httpd

发现

httpd_can_network_connect --> off

执行下面命令之后

#setsebool httpd_can_network_connect 1

可以改为on的状态
再次连接数据库时可以正常使用了
但是等到系统重启之后,发现同样的错误又出现了

于是我查看了SELinux的状态

#/usr/sbin/sestatus -v

结果发现是

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
Process contexts:
Current context:                unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
Init context:                   system_u:system_r:init_t:s0
/usr/sbin/sshd                  system_u:system_r:sshd_t:s0-s0:c0.c1023
File contexts:
Controlling terminal:           unconfined_u:object_r:user_devpts_t:s0
/etc/passwd                     system_u:object_r:passwd_file_t:s0
/etc/shadow                     system_u:object_r:shadow_t:s0
/bin/bash                       system_u:object_r:shell_exec_t:s0
/bin/login                      system_u:object_r:login_exec_t:s0
/bin/sh                         system_u:object_r:bin_t:s0 -> system_u:object_r:shell_exec_t:s0
/sbin/agetty                    system_u:object_r:getty_exec_t:s0
/sbin/init                      system_u:object_r:bin_t:s0 -> system_u:object_r:init_exec_t:s0
/usr/sbin/sshd                  system_u:object_r:sshd_exec_t:s0

发现SELinux是开启的
只要我们编辑配置文件

#/etc/selinux/config

将SELINUX=enforcing改为SELINUX=disabled

之后再重启,上面的错误不会出现,数据库可以正常连接了

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