Fixing MySQL replication after slaves’s relay log was corrupted

MySQL replication on slave (version 5.1.61) has stopped. Slave_IO_Running was marked as Yes, but Slave_SQL_Running as No. Simple stop/start slave didn’t help so further problem analysis was needed. It seemed … Continue Reading →


How Domain Name System (DNS) Works

Actually, the DNS working system is a bit more complicated than the system we discussed before. However the working principle is the same. It can also solve the problems we … Continue Reading →


Replace text in VI editor on LINUX

ow do I find and replace (substitute) test using vi or vim text editor under UNIX / Linux / BSD or Apple OS X operating systems? Both vi and vim … Continue Reading →