MYSQL简单主从复制

master：172.25.44.1

slave：172.25.44.2

mysql5.7安装

master和slave均操作

准备rpm包：mysql-5.7.17-1.el6.x86_64.rpm-bundle.tar

解压：tar xvf mysql-5.7.17-1.el6.x86_64.rpm-bundle.tar

[root@server1 software]# ls

mysql-5.7.17-1.el6.x86_64.rpm-bundle.tar

[root@server1 software]# tar xvf mysql-5.7.17-1.el6.x86_64.rpm-bundle.tar

mysql-community-test-5.7.17-1.el6.x86_64.rpm

mysql-community-embedded-5.7.17-1.el6.x86_64.rpm

mysql-community-embedded-devel-5.7.17-1.el6.x86_64.rpm

mysql-community-server-5.7.17-1.el6.x86_64.rpm

mysql-community-libs-compat-5.7.17-1.el6.x86_64.rpm

mysql-community-devel-5.7.17-1.el6.x86_64.rpm

mysql-community-client-5.7.17-1.el6.x86_64.rpm

mysql-community-libs-5.7.17-1.el6.x86_64.rpm

mysql-community-common-5.7.17-1.el6.x86_64.rpm

[root@server1 software]# ls

mysql-5.7.17-1.el6.x86_64.rpm-bundle.tar          mysql-community-embedded-devel-5.7.17-1.el6.x86_64.rpm

mysql-community-client-5.7.17-1.el6.x86_64.rpm    mysql-community-libs-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-devel-5.7.17-1.el6.x86_64.rpm     mysql-community-server-5.7.17-1.el6.x86_64.rpm

mysql-community-embedded-5.7.17-1.el6.x86_64.rpm  mysql-community-test-5.7.17-1.el6.x86_64.rpm

查看之前是否安装过mysql，如果有要卸载掉

[root@server1 software]# rpm -qa |grep mysql

mysql-libs-5.1.71-1.el6.x86_64

[root@server1 software]# rpm -e mysql-libs-5.1.71-1.el6.x86_64

error: Failed dependencies:

	libmysqlclient.so.16()(64bit) is needed by (installed) postfix-2:2.6.6-2.2.el6_1.x86_64

	libmysqlclient.so.16(libmysqlclient_16)(64bit) is needed by (installed) postfix-2:2.6.6-2.2.el6_1.x86_64

	mysql-libs is needed by (installed) postfix-2:2.6.6-2.2.el6_1.x86_64

[root@server1 software]# rpm -e mysql-libs-5.1.71-1.el6.x86_64 --nodeps

[root@server1 software]# rpm -qa |grep mysql

安装mysql的rpm包（yum命令自动解决依赖问题，但是如果使用rpm安装的话，需要安装numactl和libaio这两个依赖包）

[root@server1 software]# yum install mysql-community-common-5.7.17-1.el6.x86_64.rpm mysql-community-libs-5.7.17-1.el6.x86_64.rpm mysql-community-devel-5.7.17-1.el6.x86_64.rpm mysql-community-client-5.7.17-1.el6.x86_64.rpm mysql-community-server-5.7.17-1.el6.x86_64.rpm -y

Installed:

  mysql-community-client.x86_64 0:5.7.17-1.el6                mysql-community-common.x86_64 0:5.7.17-1.el6

  mysql-community-devel.x86_64 0:5.7.17-1.el6                 mysql-community-libs.x86_64 0:5.7.17-1.el6

  mysql-community-server.x86_64 0:5.7.17-1.el6               

Dependency Installed:

  libaio.x86_64 0:0.3.107-10.el6                               numactl.x86_64 0:2.0.7-8.el6                              

Complete!

启动mysql

[root@server1 software]# /etc/init.d/mysqld start

Initializing MySQL database:                               [  OK  ]

Installing validate password plugin:                       [  OK  ]

Starting mysqld:                                           [  OK  ]

注意：当然其实也是可以不删除那个系统原装的libs库的：

这样的话就需要装mysql-community-libs-compat-5.7.17-1.el6.x86_64.rpm这个兼容库，装这个兼容库的时候会自动删除系统原装的libs库。

/etc/mysql.cnf

master：

log-bin=mysql-bin

server-id=1

binlog-do-db=test	#允许主从复制的库

binlog-ignore-db=mysql	#禁止主从复制的库

[root@server1 software]# /etc/init.d/mysqld restart

Stopping mysqld:                                           [  OK  ]

Starting mysqld:                                           [  OK  ]

slave:

server_id=2

[root@server2 software]# /etc/init.d/mysqld restart

Stopping mysqld:                                           [  OK  ]

Starting mysqld:                                           [  OK  ]

mysql操作

初次登陆mysql并修改密码

mysql5.7的版在数据初始化的时候就会等成一个初始密码，记录在/var/log/mysqld.log

[root@server1 software]# grep "temporary password" /var/log/mysqld.log

2017-06-13T10:13:50.746938Z 1 [Note] A temporary password is generated for root@localhost: ubP0Wisi>HJg

运行mysql_secure_installation会执行几个设置：

a)为root用户设置密码

b)删除匿名账号

c)取消root用户远程登录

d)删除test库和对test库的访问权限

e)刷新授权表使修改生效

通过这几项的设置能够提高mysql库的安全。建议生产环境中mysql安装这完成后一定要运行一次mysql_secure_installation，详细步骤请参看下面的命令:

[root@server1 software]# mysql_secure_installation

Securing the MySQL server deployment.

Enter password for user root: 

The existing password for the user account root has expired. Please set a new password.

New password: 

Re-enter new password:

The 'validate_password' plugin is installed on the server.

The subsequent steps will run with the existing configuration

of the plugin.

Using existing password for root.

Estimated strength of the password: 100

Change the password for root ? ((Press y|Y for Yes, any other key for No) : y

New password: 

Re-enter new password: 

Estimated strength of the password: 100

Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : y

By default, a MySQL installation has an anonymous user,

allowing anyone to log into MySQL without having to have

a user account created for them. This is intended only for

testing, and to make the installation go a bit smoother.

You should remove them before moving into a production

environment.

Remove anonymous users? (Press y|Y for Yes, any other key for No) : y

Success.

Normally, root should only be allowed to connect from

'localhost'. This ensures that someone cannot guess at

the root password from the network.

Disallow root login remotely? (Press y|Y for Yes, any other key for No) : y

Success.

By default, MySQL comes with a database named 'test' that

anyone can access. This is also intended only for testing,

and should be removed before moving into a production

environment.

Remove test database and access to it? (Press y|Y for Yes, any other key for No) : y

 - Dropping test database...

Success.

 - Removing privileges on test database...

Success.

Reloading the privilege tables will ensure that all changes

made so far will take effect immediately.

Reload privilege tables now? (Press y|Y for Yes, any other key for No) : y

Success.

All done!

master配置

grant replication slave on . to root@172.25.44.2 identified by 'Lt@18392027447';##通过密码赋予172.25.44.2的root用户权限

flush privileges;##刷新mysql的系统权限相关表

[root@server1 software]# mysql -uroot -pLt@18392027447

mysql: [Warning] Using a password on the command line interface can be insecure.

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 11

Server version: 5.7.17-log MySQL Community Server (GPL)

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> grant replication slave on *.* to root@172.25.44.2 identified by 'Lt@18392027447';

Query OK, 0 rows affected, 1 warning (0.11 sec)

mysql> flush privileges;

Query OK, 0 rows affected (0.40 sec)

mysql> quit

Bye

[root@server1 software]# mysql -uroot -pLt@18392027447

mysql: [Warning] Using a password on the command line interface can be insecure.

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 12

Server version: 5.7.17-log MySQL Community Server (GPL)

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> show master status;

+------------------+----------+--------------+------------------+-------------------+

| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |

+------------------+----------+--------------+------------------+-------------------+

| mysql-bin.000001 |     1399 |              |                  |                   |

+------------------+----------+--------------+------------------+-------------------+

1 row in set (0.00 sec)

mysql> quit

Bye

slave配置

master_log_file='mysql-bin.000001',master_log_pos=1399;##master端mysql> show master status;可查询此参数

show slave status\GSlave_IO和Slave_SQL必须开启，即Slave_IO_Running和Slave_SQL_Running必须对应yes

[root@server2 software]# mysql -uroot -pLt@18392027447

mysql: [Warning] Using a password on the command line interface can be insecure.

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 4

Server version: 5.7.17 MySQL Community Server (GPL)

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> stop slave;

Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> change master to master_user='root',master_password='Lt@18392027447',master_host='172.25.44.1',master_log_file='mysql-bin.000001',master_log_pos=1399;

Query OK, 0 rows affected, 2 warnings (1.23 sec)

mysql> start slave;

Query OK, 0 rows affected (0.14 sec)

mysql> show slave status\G

*************************** 1. row ***************************

               Slave_IO_State: Waiting for master to send event

                  Master_Host: 172.25.44.1

                  Master_User: root

                  Master_Port: 3306

                Connect_Retry: 60

              Master_Log_File: mysql-bin.000001

          Read_Master_Log_Pos: 1399

               Relay_Log_File: server2-relay-bin.000002

                Relay_Log_Pos: 320

        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: 1399

              Relay_Log_Space: 529

              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: ff0d1657-5020-11e7-9d4a-525400a2b9df

             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:

            Executed_Gtid_Set:

                Auto_Position: 0

         Replicate_Rewrite_DB:

                 Channel_Name:

           Master_TLS_Version:

1 row in set (0.00 sec)

mysql> quit

Bye

主从服务器测试：

master端建立数据库并插入一条数据：

[root@server1 software]# mysql -uroot -pLt@18392027447

mysql: [Warning] Using a password on the command line interface can be insecure.

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 14

Server version: 5.7.17-log MySQL Community Server (GPL)

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> create database westos;

Query OK, 1 row affected (0.18 sec)

mysql> use westos;

Database changed

mysql> create table westos(name char(10),id int(3));

Query OK, 0 rows affected (1.64 sec)

mysql> insert into westos values('kiosk',003);

Query OK, 1 row affected (0.13 sec)

mysql> show databases;

+--------------------+

| Database           |

+--------------------+

| information_schema |

| mysql              |

| performance_schema |

| sys                |

| westos             |

+--------------------+

5 rows in set (0.00 sec)

mysql> quit

Bye

slave端数据库查询

[root@server2 software]# mysql -uroot -pLt@18392027447

mysql: [Warning] Using a password on the command line interface can be insecure.

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 7

Server version: 5.7.17 MySQL Community Server (GPL)

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

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> select * from westos;

+-------+------+

| name  | id   |

+-------+------+

| kiosk |    3 |

+-------+------+

1 row in set (0.00 sec)

mysql> quit

Bye