Error #1
"Starting MySQL. ERROR! Manager of pid-file quit without updating file."
Solution: If you’re getting the above error while starting mysql, check the mysql error log by using the following command:
tail -f /var/lib/mysql/*.err
Here you can see the reason. Issue maybe due to the presence of incorrect variables existing in ‘/etc/my.cnf’.
Error #2
"Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (111)"
Solution: Make sure that /var/lib/mysql/mysql.sock is existing. Also, confirm the presence of /tmp/mysql.sock. If it’s not existing, create it:
ln -s /var/lib/mysql/mysql.sock /tmp/mysql.sock
Then restart mysql.
Error #3
ERROR 2003 (HY000): Can't connect to MySQL server on 'IP address is here' (110)
Solution: Open port 3306 in server firewall. If iptables is the firewall, use the following command:
iptables -A INPUT -m tcp -p tcp --sport 3306 -j ACCEPT iptables -A INPUT -m tcp -p tcp --dport 3306 -j ACCEPT service iptables save service iptables restart
Error #4
When Plesk login page return some errors
Solution: Disable ‘skip-bdb’ in /etc/my.cnf and then restart mysql.
Error #5
database.table_name Error : Incorrect file format 'table_name' error : Corrupt
Solution: If you’re getting the above error while executing ‘mysqlcheck’, try to repair the table manually.
# mysql -u root -p
mysql > use database_name; mysql > repair table table_name;
If the issue is not solved, try the following command:
mysql > repair table table_name USE_FRM;
It will fix the issue.
One of the most misleading errors generated by MySql is shown below:-
"error : sort_buffer_size is to small warning : Number of rows changed from 0 to 14024"
In this case, you need to adjust both ‘sort_buffer_size’ and ‘myisam_sort_buffer_size’.
