(1)GTID主从复制
1)环境介绍
/etc/redhat-release
CentOS Linux release 7.3.1611 (Core)
MySQL版本:5.7
mysql> select version();
+------------+
| version() |
+------------+
| 5.7.22-log |
+------------+
2) master端配置
- 准备数据
mysql> create database testdb;
mysql> create table testdb.t1(id int,name varchar(50));
mysql> insert into testdb.t1 values(1,'jack'),(2,'alex');
- 开启二进制日志和配置server-id
#vim /etc/my.cnf
log-bin
server-id=1
gtid_mode=ON
enforce_gtid_consistency=1
- 重启服务器
#systemctl restart mysqld
- 创建授权账号
mysql> grant replication slave,replication client on *.* to 'rep'@'192.168.111.%' identified by 'Reprep@123';
mysql> flush privileges;
- 备份数据库
mysqldump -uroot -pRedhat@123 -A -R --triggers --routines --events --single-transaction --master-data=1 --flush-logs >$(date +%F)-mysql-all.sql
- 把备份的数据库文件拷贝到从库主机上
scp -r 2018-04-26-mysql-all.sql root@192.168.111.152:/root
- 在完整备份后在创建一些数据
mysql> insert into testdb.t1 values(3,'www');
mysql> insert into testdb.t1 values(4,'yyyy');
3)slave端配置
- 验证主库创建的账号是否能够正常登陆,也验证是否有防火墙问题
# mysql -h192.168.111.151 -urep -p'Reprep@123'
- 配置从库的server-id和设置从库只读
注意应用程序连接从库的权限不要给所有权限,只让从库只读
#vim /etc/my.cnf
log-bin
server-id=2
read-only
gtid_mode=ON
enforce_gtid_consistency=1
master-info-repository=TABLE \把mysql连接主库的信息保存在表中
relay-log-info-repository=TABLE
log_slave_updates = ON
- 重启数据库
#systemctl restart mysqld
- 把备份导入到从库上
mysql -uroot -pRedhat@123 </root/2018-04-26-mysql-all.sql
- 连接主库
mysql> change master to
-> master_host='192.168.111.151', \生成环境建议使用主机名,不建议使用ip地址
-> master_user='rep',
-> master_password='Reprep@123',
-> master_auto_position=1;
change master to master_host='192.168.111.151',master_user='rep',master_password='Reprep@123',master_auto_position=1;
- 开启复制和验证状态
mysql> start slave;
mysql> show slave statusG
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
主库上创建数据库:
从库上验证:
(2)GTID主主复制
- 在master1作为从库上指向master2,注意:master2作为从库之前已经change过master1
这里的host是master2,不要弄错了;同时生产环境建议不要使用ip
mysql> change master to master_host='192.168.111.152',master_user='rep',master_password='Reprep@123',master_auto_position=1;
mysql> start slave;
mysql>show slaveG
- master1插入数据
mysql> insert into testdb.t1 values(10,'aaaa');
- master2插入数据同时把master2以前是slave的read-only删除
mysql> insert into testdb.t1 values(11,'bbbb');
- 验证:发现两边master的数据都能正常同步,very good
mysql> select * from testdb.t1;
+------+------+
| id | name |
+------+------+
| 10 | aaaa |
| 11 | bbbb |
(3)GTID多主一从
MySQL5.7中使用的是多源复制
- 在master1上备份全库,同时把备份文件传给slave1
#mysqldump -uroot -pRedhat@123 -A -R --triggers --routines --events --single-transaction --master-data=1 --flush-logs > `date +%F`-mysql-all.sql
#scp -r 2018-04-26-mysql-all.sql 192.168.111.153:/root
- slave配置
#vim /etc/my.cnf
server-id=3
read-only
gtid_mode=ON
enforce_gtid_consistency=1
master-info-repository=TABLE
relay-log-info-repository=TABLE
log_slave_updates = ON
- 重启数据库
systemctl restart mysqld
- 导入备份
mysql> reset master;
#mysql -uroot -pRedhat@123 </root/2018-04-26-mysql-all.sql
- 连接主库
master> change master to master_host='192.168.111.151',master_user='rep',master_password='Reprep@123',master_auto_position=1 for channel 'rep-master1';
master> change master to master_host='192.168.111.152',master_user='rep',master_password='Reprep@123',master_auto_position=1 for channel 'rep-master2';
mysql> start slave;
``