MGR

单主模式

参数修改

server_id=1

gtid_mode=ON

enforce_gtid_consistency=ON

binlog_checksum=NONE

log_bin=binlog

log_slave_updates=ON

binlog_format=ROW

master_info_repository=TABLE

relay_log_info_repository=TABLE

transaction_write_set_extraction    =XXHASH64

loose-group_replication_group_name='5f6268dc-b17f-11e8-abfa-c03fd530ffff'

loose-group_replication_start_on _boot=off

loose-group_replication_group_seeds="150.0.32.236:24901,150.0.32.236:24902,150.0.32.236:24903"

loose-group_replication_ip_whitelist='150.0.32.236'

loose-group_replication_local_address='150.0.32.236:24902'

loose-group_replication_bootstrap_group=off

配置主节点

set sql_log_bin=0;

create user 'repl'@'%' identified by 'repl';

grant replication slave on *.* to 'repl'@'%';

flush privileges;

set sql_log_bin=1;

 

change master to master_user='repl',master_password='repl' for channel 'group_replication_recovery';

INSTALL PLUGIN group_replication SONAME 'group_replication.so';

SET GLOBAL group_replication_bootstrap_group=ON;

START GROUP_REPLICATION;

SET GLOBAL group_replication_bootstrap_group=OFF;

 

select * from performance_schema.replication_group_members;

配置备节点

set sql_log_bin=0;

create user 'repl'@'%' identified by 'repl';

grant replication slave on *.* to 'repl'@'%';

flush privileges;

set sql_log_bin=1;

 

change master to master_user='repl',master_password='repl' for channel 'group_replication_recovery';

INSTALL PLUGIN group_replication SONAME 'group_replication.so';

START GROUP_REPLICATION;

 

多主模式

loose-group_replication_single_primary_mode=off

loose-group_replication_enforce_update_everywhere_checks=on

 

相关视图监控

performance_schema.replication_group_member_stats

performance_schema.replication_group_members

performance_schema.replication_connection_status

performance_schema.replication_applier_status

其他

流控

开启 group_replication_flow_control_mode=quota

group_replication_flow_control_applier_threshold=25000 (默认事务个数)

group_replication_flow_control_certifier_threshold=25000(默认事务个数)

 

关闭 group_replication_flow_control_mode='disabled'

备份和加节点时  关闭流控，防止事务延迟过多。