MGR 架构~搭建(8.0最新版)

 每节点执行

1 install plugin group_replication soname 'group_replication.so';
install plugin clone SONAME 'mysql_clone.so';
2 set sql_log_bin=0;
create user repl_test@'%' identified WITH 'mysql_native_password' by 'repl_test';
GRANT REPLICATION SLAVE, REPLICATION CLIENT,BACKUP_ADMIN,CLONE_ADMIN ON *.* TO 'repl_test'@'%';
set sql_log_bin=1;
3 change master to master_user='repl_test',master_password='repl_test' for channel 'group_replication_recovery';
4 配置文件更改
常规参数

 #并行复制相关

slave_parallel_type=LOGICAL_CLOCK 

slave_parallel_workers=8

slave-preserve-commit-order=on

 # GTID相关

gtid_mode=ON      

enforce_gtid_consistency=ON

#binlog相关

binlog_checksum = NONE  

transaction_write_set_extraction = XXHASH64 

log_slave_updates=ON

#MGR参数-常规

group_replication_unreachable_majority_timeout=5 

group_replication_compression_threshold=131072

group_replication_transaction_size_limit=20971520

group_replication_consistency=BEFORE_ON_PRIMARY_FAILOVER （8.0）

group_replication_exit_state_action = offline_mode（8.0）

loose-group_replication_group_name="01e5fb97-be64-41f7-bafd-3afc7a6ab555" 

loose-group_replication_start_on_boot=off 

loose-group_replication_local_address="本地IP:13306"

loose-group_replication_group_seeds="IP1:13306,IP2:13306,IP3:13306" 

loose-group_replication_bootstrap_group = off 

loose-group_replication_ip_whitelist='10.255.74.0/24' 

loose-group_replication_member_weight = 50

MGR 参数-clone相关参数

loose-group_replication_clone_threshold=50000  超过指定事务延迟数量后触发Clone Plugin重搭备库

loose-clone_autotune_concurrency=ON 

loose-clone_max_concurrency=16 

loose-clone_max_data_bandwidth=100 

loose-clone_max_network_bandwidth=100 

loose-clone_ddl_timeout=300

5 主节点启动
set global group_replication_bootstrap_group=ON;
START group_replication;
set global group_replication_bootstrap_group=OFF;
6 从节点执行
START group_replication;
7 查看状态
select * from performance_schema.replication_group_members; 都为online代表成功