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Reliable MySQL Using Replication Issac Goldstand Mirimar Networks www.mirimar.net [email_address]

What is replication? ,[object Object],[object Object],[object Object],[object Object]

Replication basics… ,[object Object],[object Object],[object Object],Master Slave Slave Slave Slaves

Replication basics… ,[object Object],[object Object],[object Object],DATA DATA INSERT INTO … Master Slave Client

Replication basics… ,[object Object],[object Object],DATA DATA INSERT INTO … Binary Log Master Slave Client

Replication basics… ,[object Object],[object Object],[object Object],DATA DATA INSERT INTO … INSERT INTO … Relay Log Replication Thread Master Slave Client

Replication basics… ,[object Object],[object Object],DATA DATA INSERT INTO … INSERT INTO … Relay Log Replication Thread DATA Master Slave Client

Replication Strategies ,[object Object],Master Slave Slave Slave Client (SELECT) Client (SELECT) Client (SELECT) Client (SELECT) Client (SELECT) Client (SELECT) Client (INSERT)

Replication Strategies ,[object Object],[object Object],MySQL Server MySQL Server MySQL Server Client INSERT INTO… INSERT INTO … Client

Replication Strategies ,[object Object],[object Object],[object Object],DATA DATA DATA DATA DATA Client Master Slave

Replication Strategies ,[object Object],[object Object],[object Object],[object Object],Master Slave Backup with LOCK TABLES (or single transaction) Client INSERT / SELECT Client INSERT / SELECT

Simple Replication Setup ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Configure master my.cnf ------------- [mysqld] server-id = 1 log-bin

Configure slave my.cnf ------------- [mysqld] server-id = 2 master-user = someuser master-password = secret master-host = ip.of.master

Initial dataset ,[object Object],[object Object],[object Object],[object Object]

Configure log position MASTER mysql> SHOW MASTER STATUS; +---------------------------+----------+--------------+------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | +---------------------------+----------+--------------+------------------+ | vmware-mirimar-bin.000002 | 79 | | | +---------------------------+----------+--------------+------------------+ SLAVE mysql> CHANGE MASTER TO MASTER_LOG_FILE=‘ vmware-mirimar-bin.000002 ’, MASTER_LOG_POS= 79 ; SLAVE mysql> START SLAVE;

Using CHANGE MASTER TO ,[object Object],[object Object],[object Object],[object Object],[object Object]

Advanced CHANGE MASTER TO ,[object Object],[object Object],[object Object],[object Object],[object Object]

Confirming it works SLAVE mysql> SHOW SLAVE STATUS *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: vmware-mirimar Master_User: someuser Master_Port: 3306 Connect_Retry: 60 Master_Log_File: vmware-mirimar-bin.000002 Read_Master_Log_Pos: 79 Relay_Log_File: vmware1-mirimar-relay-bin.000002 Relay_Log_Pos: 250 Relay_Master_Log_File: vmware-mirimar-bin.000002 Slave_IO_Running: Yes Slave_SQL_Running: Yes Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 79 Relay_Log_Space: 250 Seconds_Behind_Master: 0

Permissions ,[object Object],[object Object]

Internal Threads ,[object Object],[object Object],[object Object]

IO thread isolation ,[object Object],[object Object]

SQL thread isolation ,[object Object],[object Object],[object Object]

Master Thread ,[object Object],[object Object],[object Object]

Status files ,[object Object],[object Object],[object Object],[object Object]

Information in master.info ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Information in relay-log.info ,[object Object],[object Object],[object Object],[object Object]

Backup master ,[object Object],[object Object],[object Object],[object Object]

Backup master files ,[object Object],[object Object],[object Object],[object Object]

Backup slave ,[object Object],[object Object],[object Object]

For more information ,[object Object],[object Object],[object Object]

Thank You! For more information: Issac Goldstand margol@mirimar.net http://www.beamartyr.net/ http://www.mirimar.net/

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