Can't connect to MySQL server error 111

I installed mysql server on linux box IP = 192.168.1.100 but when i try to connect to this IP it alway error(111). but use localhost and 127.0.0.1 is OK.

beer@beer-laptop# ifconfig | grep "inet addr"
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet addr:192.168.1.100  Bcast:192.168.1.255  Mask:255.255.255.0

beer@beer-laptop# mysql -ubeer -pbeer -h192.168.1.100
ERROR 2003 (HY000): Can't connect to MySQL server on '192.168.1.100' (111)

beer@beer-laptop# mysql -ubeer -pbeer -hlocalhost
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 160
Server version: 5.1.31-1ubuntu2 (Ubuntu)

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> 

beer@beer-laptop# mysql -ubeer -pbeer -h127.0.0.1
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 161
Server version: 5.1.31-1ubuntu2 (Ubuntu)

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> 

Connect from another machine it also error 111.

another@another-laptop# mysql -ubeer -pbeer -h192.168.1.100
ERROR 2003 (HY000): Can't connect to MySQL server on '192.168.1.100' (111)

How difference between use localhost/127.0.0.1 and 192.168.1.100 in this case. I don't know how to connect to this database from another machine.

Help please. Thank.

 Answers

It probably means that your MySQL server is only listening the localhost interface.

If you have lines like this :

skip-networking
bind-address = 127.0.0.1

In your my.cnf configuration file, you should comment them (add a # at the beginning of the lines), and restart MySQL.

sudo service mysql restart

Of course, to do this, you must be the administrator of the server.

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If all the previous answers didn't give any solution, you should check your user privileges.

If you could login as root to mysql then you should add this:

CREATE USER 'root'@'192.168.1.100' IDENTIFIED BY  '***';
GRANT ALL PRIVILEGES ON * . * TO  'root'@'192.168.1.100' IDENTIFIED BY  '***' WITH GRANT OPTION MAX_QUERIES_PER_HOUR 0 MAX_CONNECTIONS_PER_HOUR 0 MAX_UPDATES_PER_HOUR 0 MAX_USER_CONNECTIONS 0 ;

Then try to connect again using mysql -ubeer -pbeer -h192.168.1.100. It should work.