ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)

Question

I installed LAMP on Ubuntu 12.04 LTS (Precise Pangolin) and then set root password on phpMyAdmin. I forgot the password and now I am unable to login. When I try to chan

Answer 1

I once had this problem and solved it by installing mysql-server, so make sure that you have installed the mysql-server, not the mysql-client or something else.

That error means the file /var/run/mysqld/mysqld.sock doesn't exists, if you didn't install mysql-server, then the file would not exist. So in that case, install it with

sudo apt-get install mysql-server

But if the mysql-server is already installed and is running, then you need to check the config files.

The config files are:

/etc/my.cnf
/etc/mysql/my.cnf
/var/lib/mysql/my.cnf

In /etc/my.cnf, the socket file config may be /tmp/mysql.sock and in /etc/mysql/my.cnf the socket file config may be /var/run/mysqld/mysqld.sock. So, remove or rename /etc/mysql/my.cnf, let mysql use /etc/my.cnf, then the problem may solved.

Answer 2

I FOUND THE SOLUTION

Before firing the command : mysql_secure_installation

• Step 1: sudo systemctl stop mariadb
• Step 2: sudo systemctl start mariadb
• Step 3: mysql_secure_installation

Then it will ask root password and you can simply press Enter and set your new root password.

Answer 3

Try this:

mysql -h 127.0.0.1 -P 3306 -u root -p <database>

Also (to see if it's running):

telnet 127.0.0.1 3306 

Probably it is just a misconfiguration in the my.cnf file, in /etc/somewhere (depending on the Linux distribution).

Answer 4

Here's what worked for me:

ln -s /var/lib/mysql/mysql.sock /tmp/mysql.sock
service mysql restart

This creates a link.

Answer 5

Check if you have the correct rights:

sudo chmod 755 /var/lib/mysql/mysql

I had the same problems and this worked for me. After doing this I was able to start MySQL.

Answer 6

Check the "bind-adress" parameter in my.cnf.

Else try with the command:

mysql -h 127.0.0.1 -P 3306 -u root -p

• -h for host 127.0.0.1, that is, localhost

• -P (notice -P as uppercase) for port 3306, that is, the default port for MySQL