MySQL php can't connect to localhost, 127.0.0.1 working

Question

I have a Simple PHP script, that is not able to connect to MySQL.

<?php $link = mysql_connect("localhost", "user", "password"); if (!$link) { die('Could not connect: ' . mysql_error() . ' ' . mysql_errno()); } else { echo "connected"; } 

When i access the page with url

http://mydomain/1.php

I get error

Could not connect: Permission denied 2002 

If i change "localhost" with "127.0.0.1", it works.

If i run the program from command line, for example

php 1.php 

it connects. To verify the problem, i run

[root@server1 ~]# php -r 'var_dump(mysql_connect("localhost:/var/lib/mysql/mysql.sock", "user", "password"));' resource(5) of type (mysql link) [root@server1 ~]# chsh apache --shell /bin/bash Changing shell for apache. chsh: Shell not changed. [root@server1 ~]# su - apache Last login: Fri Mar 17 02:30:39 CDT 2017 on pts/0 -bash-4.2$ php -r 'var_dump(mysql_connect("localhost:/var/lib/mysql/mysql.sock", "user", "password"));' PHP Warning: mysql_connect(): Permission denied in Command line code on line 1 bool(false) -bash-4.2$ ls -l /var/lib/mysql/mysql.sock ls: cannot access /var/lib/mysql/mysql.sock: Permission denied -bash-4.2$ 

How do i fix this issue, this is CentOS 7 server with default php version. MySQL version is

[root@server1 ~]# mysql --version mysql Ver 15.1 Distrib 5.5.52-MariaDB, for Linux (x86_64) using readline 5.1 [root@server1 ~]# 

EDIT:

This is CentOS 7 Server, SELinux is disabled.

# sestatus SELinux status: disabled # 

Answer 1

I had the same problem a few hours ago (cpanel & cloudlinux)

My simple solution was to modify /etc/my.cnf:

[root@ds1 home]# cat /etc/my.cnf
[mysqld]
innodb_file_per_table=1
default-storage-engine=MyISAM
performance-schema=0
max_allowed_packet=268435456
open_files_limit=28574
#bind-address=127.0.0.1
bind-address=localhost
local-infile=0
[client]
socket=/var/lib/mysql/mysql.sock
host=localhost
[root@ds1 home]#

Answer 2

localhost and 127.0.0.1 are not the same for mysql, you need a grant for each of them.

https://stackoverflow.com/questions/19712307/mysql-localhost-127-0-0-1

Answer 3

I got it resolved by running

chmod 755 /var/lib/mysql 

Answer 4

Looks like you might have created the user which is bound with 127.0.0.1. Try one thing create another user like this in mysql.

create user 'my_user'@'localhost' identified by 'mypassword'; 

and grant same privileges to this user as the earlier one.

Note : You can keep the same username, or you can delete the earlier one and create the new one, its up to you.