CentOS6.8配置Mysql数据库主从复制
Centos6.8配置MySql5.1数据库主从复制
数据库安装：
1、 系统信息：
1. [root@bogon local]# cat /proc/version
2. Linux version 2.6.32-642.el6.x86_64([email protected]) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-17)(GCC) ) #1 SMP Tue May 10 17:27:01 UTC 2016
3. CentOS 6.8 64位CentOS-6.8-x86_64-bin-DVD1.iso
2、 安装MySql数据库：如果有冲突：
4. ##[root@bogon develop]# yum remove mysql-libsCentos中彻底删除Mysql（rpm、yum安装的情况）
5. 安装mysql数据库(默认的为5.1)：yum install -ymysql-server mysql mysql-deve
6. 查看安装数据库信息：rpm -qi mysql-server
启动MySql服务
7. [root@bogon ~]# /etc/init.d/mysql star
配置root用户密码
8. /usr/bin/mysqladmin -u root password '密码'
允许远程访问：
9. GRANT ALL PRIVILEGES ON *.* TO 'root'@'%'IDENTIFIED BY '密码' WITH GRANT OPTION;
10. FLUSH PRIVILEGES 刷新权限
###########################################################################
简单的master配置：
11. vi /etc/my.cnf
12. [mysqld]
13. datadir=/var/lib/mysql
14. socket=/var/lib/mysql/mysql.sock
15. user=mysql
16. # Disablingsymbolic-links is recommended to prevent assorted security risks
17. symbolic-links=0
# 设置服务器ID
18. server-id=153
# 设置需要写日志的数据库
19. binlog-do-db=test
# 设置不需要写日志的数据库
20. binlog-ignore-db=mysql
# 日志基于行模式
21. # binlog_format=row
# 二进制日志文件存放位置
log-bin=mysql-bin
22. [mysqld_safe]
23. log-error=/var/log/mysqld.log
24. pid-file=/var/run/mysqld/mysqld.pid
进入sql命令行：
25. mysql> show masterstatus;
26. +------------------+----------+--------------+------------------+
27. | File | Position | Binlog_Do_DB |Binlog_Ignore_DB |
28. +------------------+----------+--------------+------------------+
29. | mysql-bin.000004 | 696 | test | mysql |
30. +------------------+----------+--------------+------------------+
31. 1 row in set (0.00 sec)
mysql>
红色部分是必须修改的部分
32. # 创建slave帐号slave，密码123456
33. mysql>grant replication slave on *.* to 'slave'@'%' identified by '123456';
34. # 允许主库可以被从库使用该账号远程访问
35. GRANT ALL PRIVILEGES ON*.* TO 'slave'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;
36. FLUSH PRIVILEGES 刷新权限
37. service mysqld restart 重启数据库服务
简单的slave配置：
38. [mysqld]
39. datadir=/var/lib/mysql
40. socket=/var/lib/mysql/mysql.sock
41. user=mysql
42. # Disablingsymbolic-links is recommended to prevent assorted security risks
43. symbolic-links=0
44. server-id=130
45. [mysqld_safe]
46. log-error=/var/log/mysqld.log
47. pid-file=/var/run/mysqld/mysqld.pid
重启mysql服务
进入sql命令行：
1. mysql> show slave status\G;
2. *************************** 1. row***************************
3. Slave_IO_State: Waiting formaster to send event
4. Master_Host: 192.168.100.153
5. Master_User: slave
6. Master_Port: 3306
7. Connect_Retry: 60
8. Master_Log_File: mysql-bin.000004
9. Read_Master_Log_Pos: 696
10. Relay_Log_File: mysqld-relay-bin.000009
11. Relay_Log_Pos: 636
12. Relay_Master_Log_File: mysql-bin.000004
13. Slave_IO_Running: Yes #这两项必须是yes才行（此为no是可能是主库没关防火墙）
14. Slave_SQL_Running: Yes #这两项必须是yes才行
15. Replicate_Do_DB:
16. Replicate_Ignore_DB:
17. Replicate_Do_Table:
18. Replicate_Ignore_Table:
19. Replicate_Wild_Do_Table:
20. Replicate_Wild_Ignore_Table:
21. Last_Errno: 0
22. Last_Error:
23. Skip_Counter: 0
24. Exec_Master_Log_Pos: 696
25. Relay_Log_Space: 792
26. Until_Condition: None
27. Until_Log_File:
28. Until_Log_Pos: 0
29. Master_SSL_Allowed: No
30. Master_SSL_CA_File:
31. Master_SSL_CA_Path:
32. Master_SSL_Cert:
33. Master_SSL_Cipher:
34. Master_SSL_Key:
35. Seconds_Behind_Master: 0
36. Master_SSL_Verify_Server_Cert: No
37. Last_IO_Errno: 0
38. Last_IO_Error:
39. Last_SQL_Errno: 0
40. Last_SQL_Error:
41. 1 row in set (0.00 sec)
42.
43. ERROR:
44. No query specified
45.
- mysql>
红色部分是不许修改的内容
47. # 执行同步命令，设置主数据库ip，同步帐号密码，同步位置
48. mysql>change master to master_host='192.168.100.153',master_user='slave',master_password='123456',master_log_file=' mysqld-relay-bin.000009',master_log_pos=636;
49. # 开启同步功能
50. mysql>start slave;
51. # 停止主从同步
52. mysql> stop slave;
53. # 连接断开时，重新连接超时时间
54. mysql> change master to master_connect_retry=50;
55. # 开启主从同步
56. mysql> start slave;
附录：
关闭防火墙
1、重启后永久性生效：
开启：chkconfig iptables on
关闭：chkconfig iptables off
2、即时生效，重启后失效：
开启：service iptables start
关闭：service iptables stop