MySQL inodb cluster部署

innodb cluster是基于组复制来实现的。

搭建一套MySQL的高可用集群innodb。

实验环境：

IP	主机名	系统	软件
192.168.91.46	master	RHEL7.4	mysqlshell8.0.17，mysqlrouter8.0.17，mysql8.0.17
192.168.91.35	node1	RHEL7.4	mysql8.0.17
192.168.91.36	node2	RHEL7.4	mysql8.0.17

组复制的部署：

master：

server_id = 100 #服务ID
gtid_mode = ON #全局事务
enforce_gtid_consistency = ON #强制GTID的一致性
log-slave-updates=on
master_info_repository = TABLE #将master.info元数据保存在系统表中
relay_log_info_repository = TABLE #将relay.info元数据保存在系统表中
binlog_checksum = NONE #禁用二进制日志事件校验
log_slave_updates = ON #级联复制
log_bin = binlog   #开启二进制日志记录
binlog_format= ROW #以行的格式记录
transaction_write_set_extraction = XXHASH64 #使用哈希算法将其编码为散列
loose-group_replication_group_name = 'ce9be252-2b71-11e6-b8f4-00212844f856' #加入的组名
loose-group_replication_start_on_boot = off #为了避免每次启动自动引导具有相同名称的第二个组,所以设置为OFF。
loose-group_replication_local_address = 'master:33061' #以本机端口33061接受来自组中成员的传入连接   根据实际情况填写
loose-group_replication_group_seeds ='master:33061, node1:33062, node2:33063' #组中成员访问表    根据实际情况填写
loose-group_replication_bootstrap_group = off #不启用引导组

重启数据库：

[root@master ~]# systemctl restart mysqld [root@node1 ~]# systemctl restart mysqld [root@node2 ~]# systemctl restart mysqld

安装插件（三台都需要安装）：

mysql> install PLUGIN group_replication SONAME 'group_replication.so';

-- 查看group replication组件

mysql> show plugins;

master操作：

mysql> set SQL_LOG_BIN=0; #停掉日志记录

mysql> grant replication slave on *.* to repl@'192.168.91.%' identified by 'kavl7kAkkle!';

mysql> flush privileges;

mysql> set SQL_LOG_BIN=1; #开启日志记录

mysql> change master to master_user='repl',master_password='kavl7kAkkle!' for channel 'group_replication_recovery'; #构建group replication集群

mysql> SET GLOBAL group_replication_bootstrap_group=ON;

mysql> START GROUP_REPLICATION;

mysql> SET GLOBAL group_replication_bootstrap_group=OFF;

mysql> SELECT * FROM performance_schema.replication_group_members; +---------------------------+--------------------------------------+-------------+-------------+--------------+ | CHANNEL_NAME | MEMBER_ID | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE | +---------------------------+--------------------------------------+-------------+-------------+--------------+ | group_replication_applier | 775dec89-ac6e-11e9-bfe6-000c29de2cf7 | master | 3306 | ONLINE | +---------------------------+--------------------------------------+-------------+-------------+--------------+ node1和node2上操作：

mysql> set SQL_LOG_BIN=0; #停掉日志记录

mysql> grant replication slave on *.* to repl@'192.168.91.%' identified by 'kavl7kAkkle!';

mysql> flush privileges;

mysql> set SQL_LOG_BIN=1; #开启日志记录

mysql> change master to master_user='repl',master_password='kavl7kAkkle!' for channel 'group_replication_recovery'; #构建group replication集群

mysql> set global group_replication_allow_local_disjoint_gtids_join=ON; Query OK, 0 rows affected (0.01 sec)

mysql> reset master; mysql> START GROUP_REPLICATION; Query OK, 0 rows affected (4.02 sec)

至此组搭建完成，组中有三个成员。