Remember a low-level error caused by MySQL (111)

This afternoon with a good dual-master multiple from the server, two host + host installed 6 virtual machines, two MySQL master each authorized its slave telnet, the original good can telnet, at night back when found one of the master login not on its slave (there are 2),

[[Email protected] ~]# Telnet192.168.1.135 3306Trying192.168.1.135... telnet:connect to address192.168.1.135: Connection refused[[email protected]~]# Telnet192.168.1.135 3759Trying192.168.1.135... telnet:connect to address192.168.1.135: Connection refused[[email protected]~]# Telnet192.168.1.135 3306Trying192.168.1.135... telnet:connect to address192.168.1.135: Connection refused[[email protected]~]# Telnet192.168.1.135 3759Trying192.168.1.135... telnet:connect to address192.168.1.135: Connection refused[[email protected]~]# mysql-h192.168.1.135-uroot-p

This magical performance is to let me not touch the mind, restart slave mysqld OK, check port open OK, check port use 3306, check authorization ok,ping ok,telnet refused, but no one works.

Finally found that the original is opened Ipvsadm service, close Ipvsadm, login Slave,ok.

There's no more next time.

Remember a low-level error caused by MySQL (111)