MySQL5.7基于GTID搭建主从复制
MySQL 5.7 基于GTID搭建主从复制
一、搭建过程
1.1 准备三个MySQL实例
mysqld --initialize-insecure --user=mysql --basedir=/usr/local/mysql --datadir=/mysql/3307/data/ mysqld --initialize-insecure --user=mysql --basedir=/usr/local/mysql --datadir=/mysql/3308/data/ mysqld --initialize-insecure --user=mysql --basedir=/usr/local/mysql --datadir=/mysql/3309/data/
1.2 server_id, server_uuid 不同
mysql -uroot -p123 -e "select @@server_id" mysql -uroot -p123 -e "select @@server_uuid"
1.3 gtid_mode 是否开启:
mysql -uroot -p123 -e "select @@gtid_mode" mysql -uroot -p123 -e "select @@server_gtid" vi 330{7..9}/my.cnf gtid_mode=ON enforce_gtid_consistency=ON log_slave_updates=ON
1.4 确认binlog开启
mysql -uroot -p123 -e "select @@log_bin"
1.5 备份主库数据到从库通过远程方式
mysqldump -uroot -p123 -h 192.168.84.30 -P 3307 > /tmp/full.sql
1.6 恢复数据
mysql> source /tmp/full.sql
1.7 主库创建复制用户
grant replication slave on *.* to repl@'192.168.84.30' identified by '123';
1.8 从库启动复制
帮助: mysql> help change master to ...... 找到配置模板: CHANGE MASTER TO MASTER_HOST='master2.example.com', MASTER_USER='replication', MASTER_PASSWORD='password', MASTER_PORT=3306, MASTER_LOG_FILE='master2-bin.001', MASTER_LOG_POS=4, MASTER_CONNECT_RETRY=10; 3308,3309使用如下配置: CHANGE MASTER TO MASTER_HOST='192.168.84.30', MASTER_USER='repl', MASTER_PASSWORD='123', MASTER_PORT=3307, master_auto_position=1; 开始配置3308 mysql> CHANGE MASTER TO -> MASTER_HOST='192.168.84.30', -> MASTER_USER='repl', -> MASTER_PASSWORD='123', -> MASTER_PORT=3307, -> master_auto_position=1; Query OK, 0 rows affected, 2 warnings (0.00 sec) 开始配置3309 mysql> CHANGE MASTER TO -> MASTER_HOST='192.168.84.30', -> MASTER_USER='repl', -> MASTER_PASSWORD='123', -> MASTER_PORT=3307, -> master_auto_position=1; Query OK, 0 rows affected, 2 warnings (0.00 sec)
1.9 查看状态:
mysql> show slave status \G; 查看slave状态 mysql> show slave status \G; *************************** 1. row *************************** Slave_IO_State: Master_Host: 192.168.84.30 Master_User: repl Master_Port: 3307 Connect_Retry: 60 Master_Log_File: Read_Master_Log_Pos: 4 Relay_Log_File: open_source-relay-bin.000001 Relay_Log_Pos: 4 Relay_Master_Log_File: Slave_IO_Running: No Slave_SQL_Running: No Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 0 Relay_Log_Space: 154 Until_Condition: None Until_Log_File: Until_Log_Pos: 0 Master_SSL_Allowed: No Master_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: NULL Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 0 Last_IO_Error: Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 0 Master_UUID: Master_Info_File: /mysql/3308/data/master.info SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Master_Retry_Count: 86400 Master_Bind: Last_IO_Error_Timestamp: Last_SQL_Error_Timestamp: Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: Executed_Gtid_Set: Auto_Position: 1 Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version: 1 row in set (0.00 sec) ERROR: No query specified
2.0 启动和关闭复制:
start slave; stop slave;
备注:5.7 MGR 新出的亮点,8.0.17建议用MGR
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