docker容器单机创建3个节点的MySQLMGR集群方式
作者：MrZhou周
本文档详细介绍了如何在单机上使用Docker创建一个包含三个节点的MySQL MGR集群,通过一系列步骤,包括安装Docker、配置MySQL MGR以及启动多个容器,成功构建了一个高可用的MySQL集群环境
docker容器单机创建3个节点的MySQLMGR集群
mkdir -p /data/dockerData/mysql1/conf.d mkdir -p /data/dockerData/mysql1/data mkdir -p /data/dockerData/mysql2/conf.d mkdir -p /data/dockerData/mysql2/data mkdir -p /data/dockerData/mysql3/conf.d mkdir -p /data/dockerData/mysql3/data
docker run -d \ --name mysql33011 \ -p 33011:3306 \ --net=mysql-network --ip 172.72.0.15 \ -v /data/dockerData/mysql1/conf.d:/etc/mysql/conf.d \ -v /data/dockerData/mysql1/data:/var/lib/mysql \ -e MYSQL_ROOT_PASSWORD=root \ mysql:8.0.43 docker run -d \ --name mysql33012 \ -p 33012:3306 \ --net=mysql-network --ip 172.72.0.16 \ -v /data/dockerData/mysql2/conf.d:/etc/mysql/conf.d \ -v /data/dockerData/mysql2/data:/var/lib/mysql \ -e MYSQL_ROOT_PASSWORD=root \ mysql:8.0.43 docker run -d \ --name mysql33013 \ -p 33013:3306 \ --net=mysql-network --ip 172.72.0.17 \ -v /data/dockerData/mysql3/conf.d:/etc/mysql/conf.d \ -v /data/dockerData/mysql3/data:/var/lib/mysql \ -e MYSQL_ROOT_PASSWORD=root \ mysql:8.0.43
cat > /data/dockerData/mysql1/conf.d/my.cnf <<"EOF" [mysqld] user=mysql port=3306 character_set_server=utf8mb4 secure_file_priv='' server-id = 33011 default-time-zone = '+8:00' log_timestamps = SYSTEM log-bin = 1 binlog_format=row binlog_checksum=NONE log-slave-updates=1 skip-name-resolve auto-increment-increment=2 auto-increment-offset=1 gtid-mode=ON enforce-gtid-consistency=on default_authentication_plugin=mysql_native_password max_allowed_packet = 500M master_info_repository=TABLE relay_log_info_repository=TABLE relay_log=mgr15-relay-bin-ip15 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= "172.72.0.15:33061" loose-group_replication_group_seeds= "172.72.0.15:33061,172.72.0.16:33062,172.72.0.17:33063" loose-group_replication_bootstrap_group=OFF loose-group_replication_ip_whitelist="172.72.0.15,172.72.0.16,172.72.0.17" report_host=172.72.0.15 report_port=3306 EOF cat > /data/dockerData/mysql2/conf.d/my.cnf <<"EOF" [mysqld] user=mysql port=3306 character_set_server=utf8mb4 secure_file_priv='' server-id = 33012 default-time-zone = '+8:00' log_timestamps = SYSTEM log-bin = 1 binlog_format=row binlog_checksum=NONE log-slave-updates=1 gtid-mode=ON enforce-gtid-consistency=ON skip_name_resolve default_authentication_plugin=mysql_native_password max_allowed_packet = 500M master_info_repository=TABLE relay_log_info_repository=TABLE relay_log=mgr16-relay-bin-ip16 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= "172.72.0.16:33062" loose-group_replication_group_seeds= "172.72.0.15:33061,172.72.0.16:33062,172.72.0.17:33063" loose-group_replication_bootstrap_group=OFF loose-group_replication_ip_whitelist="172.72.0.15,172.72.0.16,172.72.0.17" report_host=172.72.0.16 report_port=3306 EOF cat > /data/dockerData/mysql3/conf.d/my.cnf <<"EOF" [mysqld] user=mysql port=3306 character_set_server=utf8mb4 secure_file_priv='' server-id = 33013 default-time-zone = '+8:00' log_timestamps = SYSTEM log-bin = 1 binlog_format=row binlog_checksum=NONE log-slave-updates=1 gtid-mode=ON enforce-gtid-consistency=ON skip_name_resolve default_authentication_plugin=mysql_native_password max_allowed_packet = 500M master_info_repository=TABLE relay_log_info_repository=TABLE relay_log=mgr17-relay-bin-ip17 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= "172.72.0.17:33063" loose-group_replication_group_seeds= "172.72.0.15:33061,172.72.0.16:33062,172.72.0.17:33063" loose-group_replication_bootstrap_group=OFF loose-group_replication_ip_whitelist="172.72.0.15,172.72.0.16,172.72.0.17" report_host=172.72.0.17 report_port=3306 EOF
docker restart mysql33011 mysql33012 mysql33013
所有MySQL容器中安装MGR插件
//xxx是容器的名称 docker exec -it mysql33011 mysql -uroot -proot INSTALL PLUGIN group_replication SONAME 'group_replication.so'; show plugins; docker exec -it mysql33012 mysql -uroot -proot INSTALL PLUGIN group_replication SONAME 'group_replication.so'; show plugins; docker exec -it mysql33013 mysql -uroot -proot INSTALL PLUGIN group_replication SONAME 'group_replication.so'; show plugins;
在所有节点上创建复制账号
docker exec -it mysql33011 mysql -uroot -proot docker exec -it mysql33012 mysql -uroot -proot docker exec -it mysql33013 mysql -uroot -proot SET SQL_LOG_BIN=0; CREATE USER repl@'%' IDENTIFIED BY 'root'; GRANT REPLICATION SLAVE ON *.* TO repl@'%'; FLUSH PRIVILEGES; SET SQL_LOG_BIN=1; CHANGE MASTER TO MASTER_USER='repl', MASTER_PASSWORD='root' FOR CHANNEL 'group_replication_recovery'; exit;
启动MGR单主模式
在主节点上启动MGR：
docker exec -it mysql33011 mysql -uroot -proot SET GLOBAL group_replication_bootstrap_group=ON; START GROUP_REPLICATION; SET GLOBAL group_replication_bootstrap_group=OFF; SELECT * FROM performance_schema.replication_group_members;
剩余节点需要加入MGR，在剩余节点上执行以下操作：
docker exec -it mysql33012 mysql -uroot -proot docker exec -it mysql33013 mysql -uroot -proot START GROUP_REPLICATION; SELECT * FROM performance_schema.replication_group_members; exit;
总结
以上为个人经验，希望能给大家一个参考，也希望大家多多支持脚本之家。