rpm -i https://dev.mysql.com/get/mysql80-community-release-el7-1.noarch.rpm

yum install mysql-community-{server,client,common,libs}-*

systemctl start mysqld

2、修改 my.cnf 配置文件

#節點1

server_id=1

gtid_mode=ON

enforce_gtid_consistency=ON

binlog_checksum=NONE

transaction_write_set_extraction=XXHASH64

loose-group_replication_group_name="aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa"

loose-group_replication_start_on_boot=off

loose-group_replication_local_address= "192.168.1.249:24901"

loose-group_replication_group_seeds= "192.168.1.249:24901,192.168.1.252:24901,192.168.1.253:24901"

loose-group_replication_bootstrap_group=off

loose-group_replication_ip_whitelist="192.168.1.0/24"

#節點2

server_id=2

gtid_mode=ON

enforce_gtid_consistency=ON

binlog_checksum=NONE

transaction_write_set_extraction=XXHASH64

loose-group_replication_group_name="aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa"

loose-group_replication_start_on_boot=off

loose-group_replication_local_address= "192.168.1.252:24901"

loose-group_replication_group_seeds= "192.168.1.249:24901,192.168.1.252:24901,192.168.1.253:24901"

loose-group_replication_bootstrap_group=off

loose-group_replication_ip_whitelist="192.168.1.0/24"

loose-group_replication_allow_local_disjoint_gtids_join=ON

#節點3

server_id=3

gtid_mode=ON

enforce_gtid_consistency=ON

binlog_checksum=NONE

transaction_write_set_extraction=XXHASH64

loose-group_replication_group_name="aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa"

loose-group_replication_start_on_boot=off

loose-group_replication_local_address= "192.168.1.253:24901"

loose-group_replication_group_seeds= "192.168.1.249:24901,192.168.1.252:24901,192.168.1.253:24901"

loose-group_replication_bootstrap_group=off

loose-group_replication_ip_whitelist="192.168.1.0/24"

loose-group_replication_allow_local_disjoint_gtids_join=ON

3、在三個節點創建復制賬戶

SET SQL_LOG_BIN=0;

alter user root@'localhost' identified by 'MySQL8.0';

CREATE USER root@'%' IDENTIFIED BY 'MySQL8.0';

GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, RELOAD, SHUTDOWN, PROCESS, FILE, REFERENCES, INDEX, ALTER, SHOW DATABASES, SUPER, CREATE TEMPORARY TABLES, LOCK TABLES, EXECUTE, REPLICATION SLAVE, REPLICATION CLIENT, CREATE VIEW, SHOW VIEW, CREATE ROUTINE, ALTER ROUTINE, CREATE USER, EVENT, TRIGGER, CREATE TABLESPACE, CREATE ROLE, DROP ROLE ON *.* TO 'root'@'%' WITH GRANT OPTION;

GRANT BACKUP_ADMIN, BINLOG_ADMIN, CONNECTION_ADMIN, ENCRYPTION_KEY_ADMIN, GROUP_REPLICATION_ADMIN, PERSIST_RO_VARIABLES_ADMIN, REPLICATION_SLAVE_ADMIN, RESOURCE_GROUP_ADMIN, RESOURCE_GROUP_USER, ROLE_ADMIN, SET_USER_ID, SYSTEM_VARIABLES_ADMIN, XA_RECOVER_ADMIN ON *.* TO 'root'@'%' WITH GRANT OPTION;

FLUSH PRIVILEGES;

SET SQL_LOG_BIN=1;

4、在第一個節點創建集群並添加節點二、節點三

MySQL JS > shell.connect('root@kuber01:3306')

MySQL kuber01:3306 ssl JS > cluster.addInstance('root@node02:3306');

MySQL kuber01:3306 ssl JS > cluster.addInstance('root@node03:3306');

MySQL kuber01:3306 ssl JS > cluster.status();

5、所有節點停止後重啟集群：

var cluster = dba.rebootClusterFromCompleteOutage('myCluster');

6、配置 MySQL Router

mysqlrouter --bootstrap root@kuber01:3306 --user=mysqlrouter

mysqlrouter &

參考文檔：

https://blog.csdn.net/KokJuis/article/details/78401022

https://blog.csdn.net/tuyong1972873004/article/details/77260036

搭建 MySQL 8.0 InnoDB Cluster