分布式集群（MySQL）
一、保证MySQL环境的纯净
删除MySQL的目录里面的所有内容：（即/var/lib/mysql）
[root@server2 ~]# /etc/init.d/mysqld stop
Stopping mysqld: [ OK ]
[root@server2 ~]# cd /var/lib/mysql
[root@server2 mysql]# ls
auto.cnf ibdata1 mysql-bin.000003 mysql-bin.000009 private_key.pem test
ca-key.pem ib_logfile0 mysql-bin.000004 mysql-bin.000010 public_key.pem
ca.pem ib_logfile1 mysql-bin.000005 mysql-bin.000011 server2-slow.log
client-cert.pem mysql mysql-bin.000006 mysql-bin.000012 server-cert.pem
client-key.pem mysql-bin.000001 mysql-bin.000007 mysql-bin.index server-key.pem
ib_buffer_pool mysql-bin.000002 mysql-bin.000008 performance_schema sys
[root@server2 mysql]# rm -fr *
[root@server2 mysql]# ls二、更改MySQL配置
[root@server2 mysql]# vim /etc/my.cnf
server-id=2
gtid_mode=ON
enforce_gtid_consistency=ON
master_info_repository=TABLE
relay_log_info_repository=TABLE
binlog_checksum=NONE
log_slave_updates=ON
log_bin=binlog
binlog_format=ROW
#transaction_write_set_extraction=XXHASH64
#loose-group_replication_group_name="5fc57337-7a83-11e7-8b68-525400848d33"
#loose-group_replication_start_on_boot=on
#loose-group_replication_local_address="172.25.39.2:24901"
#loose-group_replication_group_seeds="172.25.39.2:24901,172.25.39.3:24902,172.25.39.4:24903"
#loose-group_replication_bootstrap_group=off
#loose-group_replication_single_primary_mode=FALSE
#loose-group_replication_enforce_update_everywhere_check=TRUE
#group_replication_ip_whitelist='172.25.39.0/24,127.0.0.1/8'
#group_replication_allow_local_disjoint_gtids_join=on三、MySQL的重启与应用
1）更改密码登录mysql，修改my.cnf文件
[root@server2 mysql]# /etc/init.d/mysqld start
Initializing MySQL database: [ OK ]
Installing validate password plugin: [ OK ]
Starting mysqld: [ OK ]
[root@server2 mysql]# grep password /var/log/mysqld.log
2017-08-06T08:37:17.141549Z 1 [Note] A temporary password is generated for root@localhost: sje?EMetK8=%[root@server2 mysql]# mysql -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 9
Server version: 5.7.17-log
Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> set sql_log_bin=0;----以下操作不计入日志文件
Query OK, 0 rows affected (0.00 sec)
mysql> alter user root@localhost identified by 'Westos+007';---更改密码
Query OK, 0 rows affected (0.00 sec)
mysql> select uuid();----随机获取uuid
+--------------------------------------+
| uuid() |
+--------------------------------------+
| 5fc57337-7a83-11e7-8b68-525400848d33 |
+--------------------------------------+
1 row in set (0.00 sec)
mysql> exit
Bye2）获取uuid后更改配置，重启
[root@server2 mysql]# vim /etc/my.cnf
server-id=2
gtid_mode=ON
enforce_gtid_consistency=ON
master_info_repository=TABLE
relay_log_info_repository=TABLE
binlog_checksum=NONE
log_slave_updates=ON
log_bin=binlog
binlog_format=ROW
transaction_write_set_extraction=XXHASH64
loose-group_replication_group_name="5fc57337-7a83-11e7-8b68-525400848d33"
loose-group_replication_start_on_boot=on（开启开机自启动）
loose-group_replication_local_address="172.25.39.2:24901"
loose-group_replication_group_seeds="172.25.39.2:24901,172.25.39.3:24902,172.25.39.4:24903"
loose-group_replication_bootstrap_group=off
loose-group_replication_single_primary_mode=FALSE
loose-group_replication_enforce_update_everywhere_check=TRUE[root@server2 mysql]# /etc/init.d/mysqld restart
Stopping mysqld: [ OK ]
Starting mysqld: [ OK ]
[root@server2 mysql]# mysql -pWestos+007
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 5.7.17-log MySQL Community Server (GPL)
Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> set sql_log_bin=0;
Query OK, 0 rows affected (0.00 sec)
mysql> grant replication slave on *.* to mysql@"%" identified by 'Westos+007';----------授权用户
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> set sql_log_bin=1;
Query OK, 0 rows affected (0.00 sec)
mysql> change master to master_user='mysql',master_password="Westos+007" for channel 'group_replication_recovery';----说明组的用户密码
Query OK, 0 rows affected, 2 warnings (1.54 sec)
mysql> install plugin group_replication SONAME 'group_replication.so';--安装组插件
Query OK, 0 rows affected (0.47 sec)
mysql> show plugins;
+----------------------------+----------+--------------------+----------------------+---------+
| Name | Status | Type | Library | License |
+----------------------------+----------+--------------------+----------------------+---------+
| binlog | ACTIVE | STORAGE ENGINE | NULL | GPL |
| mysql_native_password | ACTIVE | AUTHENTICATION | NULL | GPL |
| sha256_password | ACTIVE | AUTHENTICATION | NULL | GPL |
| PERFORMANCE_SCHEMA | ACTIVE | STORAGE ENGINE | NULL | GPL |
| CSV | ACTIVE | STORAGE ENGINE | NULL | GPL |
| MyISAM | ACTIVE | STORAGE ENGINE | NULL | GPL |
| InnoDB | ACTIVE | STORAGE ENGINE | NULL | GPL |
| INNODB_TRX | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_LOCKS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_LOCK_WAITS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMP | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMP_RESET | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMPMEM | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMPMEM_RESET | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMP_PER_INDEX | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMP_PER_INDEX_RESET | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_BUFFER_PAGE | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_BUFFER_PAGE_LRU | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_BUFFER_POOL_STATS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_TEMP_TABLE_INFO | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_METRICS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_DEFAULT_STOPWORD | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_DELETED | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_BEING_DELETED | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_CONFIG | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_INDEX_CACHE | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_INDEX_TABLE | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_TABLES | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_TABLESTATS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_INDEXES | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_COLUMNS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_FIELDS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_FOREIGN | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_FOREIGN_COLS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_TABLESPACES | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_DATAFILES | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_VIRTUAL | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| MEMORY | ACTIVE | STORAGE ENGINE | NULL | GPL |
| MRG_MYISAM | ACTIVE | STORAGE ENGINE | NULL | GPL |
| FEDERATED | DISABLED | STORAGE ENGINE | NULL | GPL |
| ARCHIVE | ACTIVE | STORAGE ENGINE | NULL | GPL |
| BLACKHOLE | ACTIVE | STORAGE ENGINE | NULL | GPL |
| partition | ACTIVE | STORAGE ENGINE | NULL | GPL |
| ngram | ACTIVE | FTPARSER | NULL | GPL |
| validate_password | ACTIVE | VALIDATE PASSWORD | validate_password.so | GPL |
| group_replication | ACTIVE | GROUP REPLICATION | group_replication.so | GPL |
+----------------------------+----------+--------------------+----------------------+---------+
46 rows in set (0.00 sec)
mysql> set global group_replication_bootstrap_group=ON;
Query OK, 0 rows affected (0.00 sec)
mysql> set global group_replication_ip_whitelist='172.25.39.0/24,127.0.0.1/8';组的成员网段
Query OK, 0 rows affected (0.00 sec)
mysql> start group_replication;
Query OK, 0 rows affected (2.22 sec)
mysql> select * from performance_schema.replication_group_members;查看组成员
+---------------------------+--------------------------------------+-------------+-------------+--------------+
| CHANNEL_NAME | MEMBER_ID | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE |
+---------------------------+--------------------------------------+-------------+-------------+--------------+
| group_replication_applier | 740789c9-7a82-11e7-8160-525400848d33 | server2 | 3306 | ONLINE |
+---------------------------+--------------------------------------+-------------+-------------+--------------+
1 row in set (0.00 sec)
mysql> create database test;
Query OK, 1 row affected (0.06 sec)
mysql> use test;
Database changed
mysql> create table t1 (c1 int primary key,c2 text not null);
Query OK, 0 rows affected (1.39 sec)
mysql> insert into t1 values (1,'lusi');
Query OK, 1 row affected (0.50 sec)
mysql> select * from t1;
+----+------+
| c1 | c2 |
+----+------+
| 1 | lusi |
+----+------+
1 row in set (0.00 sec)
mysql> show binlog events;
+---------------+-----+----------------+-----------+-------------+---------------------------------------+
| Log_name | Pos | Event_type | Server_id | End_log_pos | Info |
+---------------+-----+----------------+-----------+-------------+---------------------------------------+
| binlog.000001 | 4 | Format_desc | 2 | 123 | Server ver: 5.7.17-log, Binlog ver: 4 |
| binlog.000001 | 123 | Previous_gtids | 2 | 150 | |
| binlog.000001 | 150 | Stop | 2 | 169 | |
+---------------+-----+----------------+-----------+-------------+---------------------------------------+
3 rows in set (0.00 sec)
mysql> exit
Bye四、在其他两个节点配置相同如下：
[root@server3 ~]# /etc/init.d/mysqld stop
Stopping mysqld: [ OK ]
[root@server3 ~]# cd /var/lib/mysql
[root@server3 mysql]# ls
auto.cnf ibdata1 mysql-bin.000003 public_key.pem sys
ca-key.pem ib_logfile0 mysql-bin.000004 server3-relay-bin.000001 test
ca.pem ib_logfile1 mysql-bin.000005 server3-relay-bin.000002
client-cert.pem mysql mysql-bin.index server3-relay-bin.index
client-key.pem mysql-bin.000001 performance_schema server-cert.pem
ib_buffer_pool mysql-bin.000002 private_key.pem server-key.pem
[root@server3 mysql]# rm -fr *
[root@server3 mysql]# vim /etc/my.cnf
server-id=3
gtid_mode=ON
enforce_gtid_consistency=ON
master_info_repository=TABLE
relay_log_info_repository=TABLE
binlog_checksum=NONE
log_slave_updates=ON
log_bin=binlog
binlog_format=ROW
transaction_write_set_extraction=XXHASH64
loose-group_replication_group_name="5fc57337-7a83-11e7-8b68-525400848d33"
loose-group_replication_start_on_boot=on
loose-group_replication_local_address="172.25.39.3:24901"
loose-group_replication_group_seeds="172.25.39.2:24901,172.25.39.3:24902,172.25.39.4:24903"
loose-group_replication_bootstrap_group=off
loose-group_replication_single_primary_mode=FALSE
loose-group_replication_enforce_update_everywhere_check=TRUE
group_replication_ip_whitelist='172.25.39.0/24,127.0.0.1/8'
group_replication_allow_local_disjoint_gtids_join=on[root@server3 mysql]# /etc/init.d/mysqld start
Initializing MySQL database: [ OK ]
Installing validate password plugin: [ OK ]
Starting mysqld: [ OK ]
[root@server3 mysql]# grep password /var/lo
local/ lock/ log/
[root@server3 mysql]# grep password /var/log/mysqld.log
2017-08-06T09:11:06.930834Z 1 [Note] A temporary password is generated for root@localhost: !yU)d9&Lx/Sl
[root@server3 mysql]# mysql -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.7.17-log
Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> set sql_log_bin=0;
Query OK, 0 rows affected (0.00 sec)
mysql> alter user root@localhost identified by 'Westos+007';
Query OK, 0 rows affected (0.00 sec)
mysql> grant replication slave on *.* to mysql@"%" identified by 'Westos+007';
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> set sql_log_bin=1;
Query OK, 0 rows affected (0.00 sec)
mysql> change master to master_user='mysql',master_password="Westos+007" for channel 'group_replication_recovery';
Query OK, 0 rows affected, 2 warnings (1.38 sec)
mysql> install plugin group_replication SONAME 'group_replication.so';
Query OK, 0 rows affected (0.19 sec)
mysql> set global group_replication_ip_whitelist='172.25.39.0/24,127.0.0.1/8';
Query OK, 0 rows affected (0.00 sec)
mysql> set global group_replication_allow_local_disjoint_gtids_join=on;
Query OK, 0 rows affected (0.00 sec)
mysql> show plugins;
+----------------------------+----------+--------------------+----------------------+---------+
| Name | Status | Type | Library | License |
+----------------------------+----------+--------------------+----------------------+---------+
| binlog | ACTIVE | STORAGE ENGINE | NULL | GPL |
| mysql_native_password | ACTIVE | AUTHENTICATION | NULL | GPL |
| sha256_password | ACTIVE | AUTHENTICATION | NULL | GPL |
| PERFORMANCE_SCHEMA | ACTIVE | STORAGE ENGINE | NULL | GPL |
| CSV | ACTIVE | STORAGE ENGINE | NULL | GPL |
| MyISAM | ACTIVE | STORAGE ENGINE | NULL | GPL |
| InnoDB | ACTIVE | STORAGE ENGINE | NULL | GPL |
| INNODB_TRX | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_LOCKS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_LOCK_WAITS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMP | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMP_RESET | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMPMEM | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMPMEM_RESET | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMP_PER_INDEX | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMP_PER_INDEX_RESET | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_BUFFER_PAGE | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_BUFFER_PAGE_LRU | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_BUFFER_POOL_STATS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_TEMP_TABLE_INFO | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_METRICS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_DEFAULT_STOPWORD | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_DELETED | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_BEING_DELETED | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_CONFIG | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_INDEX_CACHE | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_INDEX_TABLE | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_TABLES | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_TABLESTATS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_INDEXES | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_COLUMNS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_FIELDS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_FOREIGN | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_FOREIGN_COLS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_TABLESPACES | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_DATAFILES | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_VIRTUAL | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| MEMORY | ACTIVE | STORAGE ENGINE | NULL | GPL |
| MRG_MYISAM | ACTIVE | STORAGE ENGINE | NULL | GPL |
| FEDERATED | DISABLED | STORAGE ENGINE | NULL | GPL |
| ARCHIVE | ACTIVE | STORAGE ENGINE | NULL | GPL |
| BLACKHOLE | ACTIVE | STORAGE ENGINE | NULL | GPL |
| partition | ACTIVE | STORAGE ENGINE | NULL | GPL |
| ngram | ACTIVE | FTPARSER | NULL | GPL |
| validate_password | ACTIVE | VALIDATE PASSWORD | validate_password.so | GPL |
| group_replication | ACTIVE | GROUP REPLICATION | group_replication.so | GPL |
+----------------------------+----------+--------------------+----------------------+---------+
46 rows in set (0.00 sec)
mysql> uninstall plugin validate_password;
Query OK, 0 rows affected (0.05 sec)
mysql> start group_replication;
Query OK, 0 rows affected (2.90 sec)[root@server4 mysql]# mysql -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 4
Server version: 5.7.17-log
Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> set sql_log_bin=0;
Query OK, 0 rows affected (0.00 sec)
mysql> grant replication slave on *.* to mysql@"%" identified by 'Westos+007';
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
mysql> alter user root@localhost identified by 'Westos+007';
Query OK, 0 rows affected (0.00 sec)
mysql> grant replication slave on *.* to mysql@"%" identified by 'Westos+007';
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> set sql_log_bin=1;
Query OK, 0 rows affected (0.00 sec)
mysql> change master to master_user='mysql',master_password="Westos+007" for channel 'group_replication_recovery';
Query OK, 0 rows affected, 2 warnings (0.38 sec)
mysql> install plugin group_replication SONAME 'group_replication.so';
Query OK, 0 rows affected (0.46 sec)
mysql> show plugins;
+----------------------------+----------+--------------------+----------------------+---------+
| Name | Status | Type | Library | License |
+----------------------------+----------+--------------------+----------------------+---------+
| binlog | ACTIVE | STORAGE ENGINE | NULL | GPL |
| mysql_native_password | ACTIVE | AUTHENTICATION | NULL | GPL |
| sha256_password | ACTIVE | AUTHENTICATION | NULL | GPL |
| PERFORMANCE_SCHEMA | ACTIVE | STORAGE ENGINE | NULL | GPL |
| CSV | ACTIVE | STORAGE ENGINE | NULL | GPL |
| MyISAM | ACTIVE | STORAGE ENGINE | NULL | GPL |
| InnoDB | ACTIVE | STORAGE ENGINE | NULL | GPL |
| INNODB_TRX | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_LOCKS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_LOCK_WAITS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMP | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMP_RESET | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMPMEM | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMPMEM_RESET | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMP_PER_INDEX | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_CMP_PER_INDEX_RESET | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_BUFFER_PAGE | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_BUFFER_PAGE_LRU | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_BUFFER_POOL_STATS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_TEMP_TABLE_INFO | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_METRICS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_DEFAULT_STOPWORD | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_DELETED | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_BEING_DELETED | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_CONFIG | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_INDEX_CACHE | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_FT_INDEX_TABLE | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_TABLES | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_TABLESTATS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_INDEXES | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_COLUMNS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_FIELDS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_FOREIGN | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_FOREIGN_COLS | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_TABLESPACES | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_DATAFILES | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| INNODB_SYS_VIRTUAL | ACTIVE | INFORMATION SCHEMA | NULL | GPL |
| MEMORY | ACTIVE | STORAGE ENGINE | NULL | GPL |
| MRG_MYISAM | ACTIVE | STORAGE ENGINE | NULL | GPL |
| FEDERATED | DISABLED | STORAGE ENGINE | NULL | GPL |
| ARCHIVE | ACTIVE | STORAGE ENGINE | NULL | GPL |
| BLACKHOLE | ACTIVE | STORAGE ENGINE | NULL | GPL |
| partition | ACTIVE | STORAGE ENGINE | NULL | GPL |
| ngram | ACTIVE | FTPARSER | NULL | GPL |
| validate_password | ACTIVE | VALIDATE PASSWORD | validate_password.so | GPL |
| group_replication | ACTIVE | GROUP REPLICATION | group_replication.so | GPL |
+----------------------------+----------+--------------------+----------------------+---------+
46 rows in set (0.01 sec)
mysql> set global group_replication_ip_whitelist='172.25.39.0/24,127.0.0.1/8';
Query OK, 0 rows affected (0.00 sec)
mysql> start group_replication;
ERROR 3096 (HY000): The START GROUP_REPLICATION command failed as there was an error when initializing the group communication layer.
mysql> set global group_replication_allow_local_disjoint_gtids_join=on;
Query OK, 0 rows affected (0.00 sec)
mysql> stop group_replication;
Query OK, 0 rows affected (11.63 sec)
mysql> uninstall plugin validate_password;
Query OK, 0 rows affected (0.05 sec)
mysql> start group_replication;
Query OK, 0 rows affected (2.90 sec)
mysql> exit
Bye当所有配置全部做好，那么在server2上显示便是这样的了：
mysql> select * from performance_schema.replication_group_members;
+---------------------------+--------------------------------------+-------------+-------------+--------------+
| CHANNEL_NAME | MEMBER_ID | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE |
+---------------------------+--------------------------------------+-------------+-------------+--------------+
| group_replication_applier | 2de90de6-7a87-11e7-ab7d-525400b17b31 | server3 | 3306 | ONLINE |
| group_replication_applier | 54890852-7a87-11e7-ab58-52540054927a | server4 | 3306 | ONLINE |
| group_replication_applier | 740789c9-7a82-11e7-8160-525400848d33 | server2 | 3306 | ONLINE |
+---------------------------+--------------------------------------+-------------+-------------+--------------+
3 rows in set (0.00 sec)这个时候就可以去测试啦~
无论在哪个主机上写，都可以同时同步到其他主机……