自定义jdbc客户端兼容群组模式
直接进入正题
下载mysql5.7+，进入安装目录
[root@localhost mysql]# cd /usr/local/mysql
[root@localhost mysql]# ll
总用量 48
drwxr-xr-x. 2 mysql mysql 4096 11月 2 09:59 bin
-rw-r--r--. 1 mysql mysql 17987 11月 2 09:59 COPYING
drwxr-xr-x. 5 mysql mysql 36 11月 2 14:12 data
drwxr-xr-x. 2 mysql mysql 55 11月 2 09:59 docs
drwxr-xr-x. 3 mysql mysql 4096 11月 2 09:59 include
drwxr-xr-x. 5 mysql mysql 230 11月 2 09:59 lib
drwxr-xr-x. 4 mysql mysql 30 11月 2 09:59 man
-rw-r--r--. 1 mysql mysql 2478 11月 2 09:59 README
srwxrwxrwx. 1 mysql mysql 0 11月 2 15:11 s1.sock
-rw-------. 1 mysql mysql 6 11月 2 15:11 s1.sock.lock
srwxrwxrwx. 1 mysql mysql 0 11月 2 15:16 s2.sock
-rw-------. 1 mysql mysql 6 11月 2 15:16 s2.sock.lock
srwxrwxrwx. 1 mysql mysql 0 11月 2 15:25 s3.sock
-rw-------. 1 mysql mysql 6 11月 2 15:25 s3.sock.lock
drwxr-xr-x. 28 mysql mysql 4096 11月 2 09:59 share
drwxr-xr-x. 2 mysql mysql 90 11月 2 09:59 support-files
[root@localhost mysql] mkdir data/s1 s2 s3
第一个实例（主）
初始化data数据，密码为空
./mysqld --initialize-insecure --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data/s1
创建conf配置
vi data/s1/s1.cnf
[mysqld]
bind-address=0.0.0.0
datadir=/usr/local/mysql/data/s1
port=24801
basedir=/usr/local/mysql
socket=/usr/local/mysql/s1.sock
#服务id，全局唯一
server_id=1
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
#本机ip地址
report_host=192.168.32.128
transaction_write_set_extraction=XXHASH64
loose-group_replication_group_name="aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa"
loose-group_replication_start_on_boot=off
#群组复制属性，特别注意：group_replication_local_address的端口并不是mysql绑定的外部端口，是group独有的端口，用于组内节点的内部通信。
loose-group_replication_local_address= "127.0.0.1:24901"
loose-group_replication_group_seeds= "127.0.0.1:24901,127.0.0.1:24902,127.0.0.1:24903"
#群组复制主节点引导默认关闭，在启动后通过全局变量动态设置
loose-group_replication_bootstrap_group=off
切换组账户，启动实例
su mysql
./mysqld --defaults-file=../data/s1/s1.cnf &
ok后进入shell
./mysql -P 24801 -uroot -p -S /usr/local/mysql/s1.sock
shell下逐步执行
SET SQL_LOG_BIN=0;
CREATE USER rpl_user@'%' IDENTIFIED BY 'rpl_user';
GRANT REPLICATION SLAVE ON *.* TO rpl_user@'%';
FLUSH PRIVILEGES;
SET SQL_LOG_BIN=1;
CHANGE MASTER TO MASTER_USER='rpl_user', MASTER_PASSWORD='rpl_user' FOR CHANNEL 'group_replication_recovery';
安装插件
INSTALL PLUGIN group_replication SONAME 'group_replication.so';
查看插件
SHOW PLUGINS;
#设置主节点引导开关（单主模式只允许有一台设置该属性）
SET GLOBAL group_replication_bootstrap_group=ON;
START/STOP GROUP_REPLICATION;
SET GLOBAL group_replication_bootstrap_group=OFF;
查看运行状态
SELECT * FROM performance_schema.replication_group_members;
+---------------------------+--------------------------------------+-------------+-------------+---------------+
| CHANNEL_NAME | MEMBER_ID | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE |
+---------------------------+--------------------------------------+-------------+-------------+---------------+
| group_replication_applier | ce9be252-2b71-11e6-b8f4-00212844f856 | myhost | 24801 | ONLINE |
+---------------------------+--------------------------------------+-------------+-------------+---------------+
新建测试数据
mysql> CREATE DATABASE test;
mysql> USE test;
mysql> CREATE TABLE t1 (c1 INT PRIMARY KEY, c2 TEXT NOT NULL);
mysql> INSERT INTO t1 VALUES (1, 'Luis');
mysql> SELECT * FROM t1;
+----+------+
| c1 | c2 |
+----+------+
| 1 | Luis |
+----+------+
mysql> SHOW BINLOG EVENTS;
+---------------+-----+----------------+-----------+-------------+--------------------------------------------------------------------+
| Log_name | Pos | Event_type | Server_id | End_log_pos | Info |
+---------------+-----+----------------+-----------+-------------+--------------------------------------------------------------------+
| binlog.000001 | 4 | Format_desc | 1 | 123 | Server ver: 5.7.19-gr080-log, Binlog ver: 4 |
| binlog.000001 | 123 | Previous_gtids | 1 | 150 | |
| binlog.000001 | 150 | Gtid | 1 | 211 | SET @@SESSION.GTID_NEXT= 'aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:1' |
| binlog.000001 | 211 | Query | 1 | 270 | BEGIN |
| binlog.000001 | 270 | View_change | 1 | 369 | view_id=14724817264259180:1 |
| binlog.000001 | 369 | Query | 1 | 434 | COMMIT |
| binlog.000001 | 434 | Gtid | 1 | 495 | SET @@SESSION.GTID_NEXT= 'aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:2' |
| binlog.000001 | 495 | Query | 1 | 585 | CREATE DATABASE test |
| binlog.000001 | 585 | Gtid | 1 | 646 | SET @@SESSION.GTID_NEXT= 'aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:3' |
| binlog.000001 | 646 | Query | 1 | 770 | use `test`; CREATE TABLE t1 (c1 INT PRIMARY KEY, c2 TEXT NOT NULL) |
| binlog.000001 | 770 | Gtid | 1 | 831 | SET @@SESSION.GTID_NEXT= 'aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa:4' |
| binlog.000001 | 831 | Query | 1 | 899 | BEGIN |
| binlog.000001 | 899 | Table_map | 1 | 942 | table_id: 108 (test.t1) |
| binlog.000001 | 942 | Write_rows | 1 | 984 | table_id: 108 flags: STMT_END_F |
| binlog.000001 | 984 | Xid | 1 | 1011 | COMMIT /* xid=38 */ |
+---------------+-----+----------------+-----------+-------------+--------------------------------------------------------------------+
第一个实例（主）部署完成，等待后续节点加入
第二个cnf（过程同第一个）
[mysqld]
datadir=/usr/local/mysql/data/s2
port=24802
basedir=/usr/local/mysql
socket=/usr/local/mysql/s2.sock
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
report_host=192.168.32.128
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= "127.0.0.1:24902"
loose-group_replication_group_seeds= "127.0.0.1:24901,127.0.0.1:24902,127.0.0.1:24903"
loose-group_replication_bootstrap_group= off
启动完成后进入shell，依次添加
SET SQL_LOG_BIN=0;
CREATE USER rpl_user@'%' IDENTIFIED BY 'password';
GRANT REPLICATION SLAVE ON *.* TO rpl_user@'%';
SET SQL_LOG_BIN=1;
CHANGE MASTER TO MASTER_USER='rpl_user', MASTER_PASSWORD='rpl_user' FOR CHANNEL 'group_replication_recovery';
安装插件
INSTALL PLUGIN group_replication SONAME 'group_replication.so';
启动插件
START GROUP_REPLICATION;
mysql> SELECT * FROM performance_schema.replication_group_members;
+---------------------------+--------------------------------------+-------------+-------------+---------------+
| CHANNEL_NAME | MEMBER_ID | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE |
+---------------------------+--------------------------------------+-------------+-------------+---------------+
| group_replication_applier | 395409e1-6dfa-11e6-970b-00212844f856 | myhost | 24801 | ONLINE |
| group_replication_applier | ac39f1e6-6dfa-11e6-a69d-00212844f856 | myhost | 24802 | ONLINE |
+---------------------------+--------------------------------------+-------------+-------------+---------------+
第三个实例（过程同第一个）
[mysqld]
datadir=/usr/local/mysql/data/s3
port=24803
basedir=/usr/local/mysql
socket=/usr/local/mysql/s3.sock
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
report_host=192.168.32.128
#
### Group Replication configuration
#
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= "127.0.0.1:24903"
loose-group_replication_group_seeds= "127.0.0.1:24901,127.0.0.1:24902,127.0.0.1:24903"
loose-group_replication_bootstrap_group= off
启动完成后进入shell，依次添加
SET SQL_LOG_BIN=0;
CREATE USER rpl_user@'%' IDENTIFIED BY 'password';
GRANT REPLICATION SLAVE ON *.* TO rpl_user@'%';
SET SQL_LOG_BIN=1;
CHANGE MASTER TO MASTER_USER='rpl_user', MASTER_PASSWORD='rpl_user' FOR CHANNEL 'group_replication_recovery';
安装插件
INSTALL PLUGIN group_replication SONAME 'group_replication.so';
启动插件
START GROUP_REPLICATION;
mysql> SELECT * FROM performance_schema.replication_group_members;
+---------------------------+--------------------------------------+-------------+-------------+---------------+
| CHANNEL_NAME | MEMBER_ID | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE |
+---------------------------+--------------------------------------+-------------+-------------+---------------+
| group_replication_applier | 395409e1-6dfa-11e6-970b-00212844f856 | myhost | 24801 | ONLINE |
| group_replication_applier | 7eb217ff-6df3-11e6-966c-00212844f856 | myhost | 24803 | ONLINE |
| group_replication_applier | ac39f1e6-6dfa-11e6-a69d-00212844f856 | myhost | 24802 | ONLINE |
+---------------------------+--------------------------------------+-------------+-------------+---------------+
至此单主模式（三个节点）部署完成
各实例分配root帐号
CREATE USER root@'%' IDENTIFIED BY 'root';
GRANT all ON *.* TO root@'%';
各实例都可以执行查询当前主信息：
SELECT *
FROM performance_schema.replication_group_members WHERE MEMBER_ID =
(SELECT VARIABLE_VALUE FROM performance_schema.global_status WHERE VARIABLE_NAME= 'group_replication_primary_member');