Gravity 全量同步MySQL到TiDB

1.准备工作：
 1.1 源库MySQL必须保证GTID复制,若是传统复制需要在线切换为GTID复制：
  #cat /etc/my.cnf
server-id                     =100
#log-bin                       =/data/mysql/mysql_bin.log
log-bin                       =mysql_bin.log
binlog_format                 =ROW
expire-logs-days              =2
gtid_mode=ON
enforce-gtid-consistency=true
  1.2在源库需要创建复制用户：
  CREATE USER _gravity IDENTIFIED BY 'gravity';
GRANT SELECT, RELOAD, LOCK TABLES, REPLICATION SLAVE, REPLICATION CLIENT, CREATE, INSERT, UPDATE, DELETE ON *.* TO '_gravity'@'%';
GRANT ALL PRIVILEGES ON _gravity.* TO '_gravity'@'%';


GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, RELOAD, LOCK TABLES, REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO '_gravity'@'cdh-pd-db-4-172' identified by 'gravity';

mysql> GRANT ALL PRIVILEGES ON `_gravity`.* TO '_gravity'@'cdh-pd-db-4-172' identified by 'gravity';
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> flush privileges;

2.设置：
在目标库的表定义要和源库的一致。

3.配置同步需要的文件：