一、mysql 的 AB主从复制
1.安装mysql(server1&server2)
[root@server1 ~]# tar xf mysql-5.7.17-1.el6.x86_64.rpm-bundle.tar
[root@server1 ~]# yum install 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-compat-5.7.17-1.el6.x86_64.rpm mysql-community-libs-5.7.17-1.el6.x86_64.rpm mysql-community-server-5.7.17-1.el6.x86_64.rpm 查看数据库初始密码:
[root@server1 ~]# /etc/init.d/mysqld start
[root@server1 ~]# cat /var/log/mysqld.log |grep password
安全初始化并修改密码
[root@server1 ~]# mysql_secure_installation
#初始化,密码必须8位数以上,而且大小写字母数字及特殊符号
2.设置server-id
master:server1
[root@server1 ~]# vim /etc/my.cnf
server-id=1
log-bin=mysql-bin ##启动二进制日志系统
slave:server2
[root@server2 ~]# vim /etc/my.cnf
server-id=2
log-bin=mysql-bin
3.创建数据库
master:
##创建同步帐户,并给予权限
mysql> grant replication slave on *.* to gw@'172.25.62.2' identified by 'Gaowei96.';
Query OK, 0 rows affected, 1 warning (0.18 sec)
mysql> flush privileges; ##刷新
Query OK, 0 rows affected (0.00 sec)
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000001 | 154 | | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
mysql> create database westos;
Query OK, 1 row affected (0.09 sec)
mysql> use westos;
Database changed
mysql> create table userinfo(
-> username varchar(20) not null,
-> password varchar(20) not null);
Query OK, 0 rows affected (1.04 sec)
mysql> desc userinfo;
+----------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+----------+-------------+------+-----+---------+-------+
| username | varchar(20) | NO | | NULL | |
| password | varchar(20) | NO | | NULL | |
+----------+-------------+------+-----+---------+-------+
2 rows in set (0.06 sec)
# 插入数据
mysql> insert into userinfo values ('user1','123');
Query OK, 1 row affected (2.30 sec)
mysql> select * from userinfo
-> ;
+----------+----------+
| username | password |
+----------+----------+
| user1 | 123 |
+----------+----------+
1 row in set (0.00 sec)
slave:
# 连接master
mysql> change master to master_host='172.25.62.1',master_user='gw',master_password='Gaowei96.';
Query OK, 0 rows affected, 2 warnings (1.04 sec)
mysql> start slave;
Query OK, 0 rows affected (0.10 sec)
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 172.25.62.1
Master_User: gw
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 821
Relay_Log_File: server2-relay-bin.000002
Relay_Log_Pos: 1034
Relay_Master_Log_File: mysql-bin.000001
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: 821
Relay_Log_Space: 1243
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: 1
Master_UUID: bd34abef-9a34-11e8-8e9b-525400e870f3
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: bd34abef-9a34-11e8-8e9b-525400e870f3:1-3
Executed_Gtid_Set: bd34abef-9a34-11e8-8e9b-525400e870f3:1-3
Auto_Position: 0
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
ERROR:
No query specified
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
| westos |
+--------------------+
5 rows in set (0.00 sec)
mysql> use westos;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> show tables;
+------------------+
| Tables_in_westos |
+------------------+
| userinfo |
+------------------+
1 row in set (0.00 sec)
mysql> select * from userinfo;
+----------+----------+
| username | password |
+----------+----------+
| user1 | 123 |
+----------+----------+
1 row in set (0.00 sec)
同步成功！
二、 mysql 基于GTID主从复制
在master和slave中的/etc/my.cnf加入gtid模式
gtid-mode=on
enforce-gtid-consistency=1然后重启数据库
/etc/init.d/mysqld restart在slave中执行以下操作:
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mysql>change master to master_host='172.25.62.2',master_user='gw',master_password='Gaowei96.',master_auto_position=1;在mster中:
mysql> use mysql;
mysql> select * from gtid_executed;
在server中执行同样的动作：
