5.7mysql 多线程slave 1.主库需要设置参数: server_id=202 log-bin=mysql-bin binlog_format=row log-slave-updates sync_binlog=1 innodb_flush_log_at_trx_commit=1
2.从库配置 server_id=203 log-bin=mysql-bin binlog_format=row log-slave-updates slave-parallel-type=LOGICAL_CLOCK slave-parallel-workers=8 master_info_repository=TABLE relay_log_info_repository=TABLE relay_log_recovery=ON slave_preserve_commit_order=on sync_relay_log=100
CHANGE MASTER TO MASTER_HOST='142.60.0.121',MASTER_PORT=3306,MASTER_USER='repl',MASTER_PASSWORD='skyvis_123' ,MASTER_LOG_FILE='mysql-bin.000005',MASTER_LOG_POS=763;
主从分别安装: install plugin rpl_semi_sync_master soname 'semisync_master.so'; install plugin rpl_semi_sync_slave soname 'semisync_master.so';
从库先开始: 执行 set global rpl_semi_sync_slave_enabled =1; stop slave io_thread; start slave io_thread;
set global rpl_semi_sync_master_enabled ? ? ? ?=1 ? ? ? ? ? ?; ? ? ? ? ? ? ? ? # ? ?0 set global rpl_semi_sync_slave_enabled ? ? ? ? =1 ? ? ? ? ? ?; ? ? ? ? ? ? ? ? # ? ?0 set global rpl_semi_sync_master_timeout ? ? ? ?=1000 ? ? ? ?; ? ? ? ? ? ? ? ? ?# ? ?1000(1 second) 同步复制中由于网络原因导致复制时间超过1s后,增强半同步复制就变成了异步复制了 set global rpl_semi_sync_master_wait_for_slave_count=1;
查看状态:
?show status like? 'Rpl_semi_sync_master_status' ;
?show status like? 'Rpl_semi_sync_slave_status' ;
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