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安装准备
配置/etc/my.cnf
主master grant 分配复制帐号
从slave change ；开启slave；查看状态；
验证一致性
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当一个事务在主库端执行并提交时，产生GTID，一同记录到binlog日志中。
binlog传输到slave，并存储到slave的relaylog后，读取这个GTID值设置gtid_next变量，告诉slave，下一个要执行的GTID值。sql线程从relay log中获取GTID，然后对比slave端的binlog是否有该GTID。如果有记录，说明该GTID的事务已经执行过，slave就会忽略。如果没有记录，slave就会执行该GTID事务，记录该GTID到自身的binlog，再读取执行事务前会先检查其他session持有该GTID，确保不被重复执行。在解析过程中会判断是否有主键，如果没有就用二级索引，如果没有就用全部扫面。
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mysql-5.7.17-1.el6.x86_64.rpm-bundle.tar
tar xf mysql-5.7.17-1.el6.x86_64.rpm-bundle.tar
yum install -y mysql-community-client-5.7.17-1.el6.x86_64.rpm mysql-community-common-5.7.17-1.el6.x86_64.rpm mysql-community-libs-5.7.17-1.el6.x86_64.rpm mysql-community-libs-compat-5.7.17-1.el6.x86_64.rpm mysql-community-server-5.7.17-1.el6.x86_64.rpm
/etc/init.d/mysqld start ##开启服务，初始化，得到一个uuid和临时秘密
2017-03-28T00:46:21.597691Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: f6701f68-134f-11e7-94e7-52540022095a.
2017-03-28T00:46:21.664060Z 1 [Note] A temporary password is generated for root@localhost: I-S>yshos7JT
[root@server3 ~]# mysql -uroot -p ##修改密码
Enter password:
mysql> alter user root@localhost identified by 'Redhat-1024';
Query OK, 0 rows affected (0.09 sec)
vim /etc/my.cnf ##编辑文件，进行配置
server-id=3
gtid-mode=ON
enforce-gtid-consistency=1 ##开启gtid的一些安全限制
log-bin=mysql-bin
binlog-do-db=test
binlog-ignore-db=mysql
log-slave-updates
/etc/init.d/mysqld restart ##更改配置，重启服务
mysql> show master status; ##查看主节点状态
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000004 | 154 | test | mysql | |
+------
mysql> grant replication slave on *.* to ly@'172.25.38.%' identified by 'Redhat-1024';##分配复制帐号
Query OK, 0 rows affected, 1 warning (0.10 sec)
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[root@server4 ~]# /etc/init.d/mysqld start
2017-03-28T00:47:40.538466Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 257d874a-1350-11e7-b4ab-525400e717cb.
2017-03-28T00:47:40.661188Z 1 [Note] A temporary password is generated for root@localhost: Aozj4uC:4iff
[root@server4 ~]# mysql -uroot -p
Enter password:
mysql> alter user root@localhost identified by 'Redhat-1024';
Query OK, 0 rows affected (0.40 sec)
[root@server4 ~]# /etc/init.d/mysqld restart
[root@server4 ~]# mysql -uroot -p
Enter password:
mysql> change master to master_host='172.25.38.3',master_user='ly',master_password='Redhat-1024',master_auto_position=1;##
mysql> show slave status\G;
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Retrieved_Gtid_Set: f6701f68-134f-11e7-94e7-52540022095a:1
Executed_Gtid_Set: f6701f68-134f-11e7-94e7-52540022095a:1
[root@server3 mysql]# mysql -p
Enter password:
[root@server3 mysql]# cat auto.cnf
[auto]
server-uuid=f6701f68-134f-11e7-94e7-52540022095a
mysql> show global variables like '%gtid%';
+----------------------------------+------------------------------------------+
| Variable_name | Value |
+----------------------------------+------------------------------------------+
| binlog_gtid_simple_recovery | ON |
| enforce_gtid_consistency | ON |
| gtid_executed | f6701f68-134f-11e7-94e7-52540022095a:1-7 |
| gtid_executed_compression_period | 1000 |
| gtid_mode | ON |
| gtid_owned | |
| gtid_purged | |
| session_track_gtids | OFF |
+----------------------------------+------------------------------------------+
[root@server4 mysql]# cat auto.cnf
[auto]
server-uuid=257d874a-1350-11e7-b4ab-525400e717cb
mysql> show global variables like '%gtid%';
+----------------------------------+------------------------------------------+
| Variable_name | Value |
+----------------------------------+------------------------------------------+
| binlog_gtid_simple_recovery | ON |
| enforce_gtid_consistency | ON |
| gtid_executed | f6701f68-134f-11e7-94e7-52540022095a:1-7 |
| gtid_executed_compression_period | 1000 |
| gtid_mode | ON |
| gtid_owned | |
| gtid_purged | f6701f68-134f-11e7-94e7-52540022095a:1-6 |
| session_track_gtids | OFF |
+----------------------------------+------------------------------------------+
mysql> grant replication slave on *.* to ly@'172.25.38.%' identified by 'Redhat-1024';
mysql> change master to master_host='172.25.38.3',master_user='ly',master_password='Redhat-1024',master_auto_position=1;
mysql> start slave;
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
mysql> insert into usertb values(0004,'xiao');
Query OK, 1 row affected (0.13 sec)
Master_Host: 172.25.38.3
Master_User: ly
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000004
Read_Master_Log_Pos: 445
Relay_Log_File: server4-relay-bin.000002
Relay_Log_Pos: 658
Relay_Master_Log_File: mysql-bin.000004
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 445
Relay_Log_Space: 867
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 3
Master_UUID: f6701f68-134f-11e7-94e7-52540022095a
Master_Info_File: /var/lib/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set: f6701f68-134f-11e7-94e7-52540022095a:1
Executed_Gtid_Set: f6701f68-134f-11e7-94e7-52540022095a:1
Auto_Position: 1
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
mysql> select * from test.usertb
-> ;
+----+----------+
| id | name |
+----+----------+
| 1 | zhangsan |
| 2 | wang |
| 3 | lisi |
+----+----------+
mysql> insert into usertb values(0004,'xiao');
Query OK, 1 row affected (0.13 sec)
mysql> select * from test.usertb;
+----+----------+
| id | name |
+----+----------+
| 1 | zhangsan |
| 2 | wang |
| 3 | lisi |
| 4 | xiao |
+----+----------+
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