1.mysqldump或者xtrabackup导出数据库scp到需要需要的备库上，然后倒入到数据库中，本例子使用mysqldump，xtrabacup请参考另外博客
http://blog.51cto.com/1937519/2283779
mysqldump -uroot -p --single_transaction --master-data=2 --databases app app1 data > all_db.sql
source all_db.sql
2.添加备库：
查看dump文件有关复制的信息：
-- GTID state at the beginning of the backup
SET @@GLOBAL.GTID_PURGED='08a7bcf7-a8e4-11e8-8b61-0800278f64de:1-438374';
-- Position to start replication or point-in-time recovery from
-- CHANGE MASTER TO MASTER_LOG_FILE='binlog.000064', MASTER_LOG_POS=715;
如果使用xtrabackup备份，可以查看xtrabackup_info文件获得相应的gtid信息。
第一种方法，传统的方法：
CHANGE MASTER TO MASTER_HOST='192.168.56.101',MASTER_PORT=3306,MASTER_USER='repluser',MASTER_PASSWORD='MYsql#123',MASTER_LOG_FILE='binlog.000064',MASTER_LOG_POS=715;
第二种方法，使用gtid：
步骤：
a.reset master;
b.SET @@GLOBAL.GTID_PURGED='08a7bcf7-a8e4-11e8-8b61-0800278f64de:1-438374';
c.CHANGE MASTER TO MASTER_HOST='192.168.56.101', MASTER_PORT=3306,MASTER_USER='repluser',MASTER_PASSWORD='MYsql#123',MASTER_AUTO_POSITION = 1;
以下为reset master和GTID_PURGED前后的gtid变化情况：
查看现在数据库中gtid信息：
mysql> show variables like '%gtid%';
+----------------------------------+-----------------------------------------------+
| Variable_name | Value |
+----------------------------------+-----------------------------------------------+
| binlog_gtid_simple_recovery | ON |
| enforce_gtid_consistency | ON |
| gtid_executed_compression_period | 1000 |
| gtid_mode | ON |
| gtid_next | AUTOMATIC |
| gtid_owned | |
| gtid_purged | 08a7bcf7-a8e4-11e8-8b61-0800278f64de:1-436675 |
| session_track_gtids | OFF |
+----------------------------------+-----------------------------------------------+
mysql> reset master;
Query OK, 0 rows affected (0.02 sec)
mysql> show variables like '%gtid%';
+----------------------------------+-----------+
| Variable_name | Value |
+----------------------------------+-----------+
| binlog_gtid_simple_recovery | ON |
| enforce_gtid_consistency | ON |
| gtid_executed_compression_period | 1000 |
| gtid_mode | ON |
| gtid_next | AUTOMATIC |
| gtid_owned | |
| gtid_purged | |
| session_track_gtids | OFF |
+----------------------------------+-----------+
mysql> SET @@GLOBAL.GTID_PURGED='08a7bcf7-a8e4-11e8-8b61-0800278f64de:1-438374';
Query OK, 0 rows affected (0.00 sec)
mysql> show variables like '%gtid%';
+----------------------------------+-----------------------------------------------+
| Variable_name | Value |
+----------------------------------+-----------------------------------------------+
| binlog_gtid_simple_recovery | ON |
| enforce_gtid_consistency | ON |
| gtid_executed_compression_period | 1000 |
| gtid_mode | ON |
| gtid_next | AUTOMATIC |
| gtid_owned | |
| gtid_purged | 08a7bcf7-a8e4-11e8-8b61-0800278f64de:1-438374 |
| session_track_gtids | OFF |
+----------------------------------+-----------------------------------------------+
8 rows in set (0.01 sec)
CHANGE MASTER TO MASTER_HOST='192.168.56.101', MASTER_PORT=3306,MASTER_USER='repluser',MASTER_PASSWORD='MYsql#123',MASTER_AUTO_POSITION = 1;
start slave;
3.参考跳过复制错误：
传统方法跳过事务：
stop slave;
set global sql_slave_skip_counter=1;
start slave;
show slave status\G;
使用gtid跳过事务：
stop slave;
set gtid_next='xxxxxxxxxxxxx:n';
begin;
commit;
set gtid_next='AUTOMATIC';
start slave;