【引自Crazy_Coder的博客】前期准备
- 准备4台机器，系统为CentOS release 6.6
- Ip分别为192.168.20.121、192.168.20.122、192.168.20.123、192.168.20.124
- 4台机器分别作为Atlas代理服务，master MySQL，slave MySQL 1，slave MySQL 2
- 下载QiHoo360的Atlas 地址
安装Atlas
1. 下载得到Atlas-XX.el6.x86_64.rpm安装文件
2. sudo rpm –i Atlas-XX.el6.x86_64.rpm安装
3. 安装在/usr/local/mysql-proxy
4. 安装目录分析
- bin
- 可执行文件
- encrypt用来加密密码，后面会用到
- mysql-proxy是MySQL自己的读写分离代理
- mysql-proxyd操作Atlas
- VERSION
- conf
- test.cnf配置文件
- 一个文件为一个实例，实例名即文件名，启动需要带上这个实例名
- lib依赖包
- log记录日志
5. 启动命令：/usr/local/mysql-proxy/bin/mysql-proxyd [实例名] start
6. 停止命令：/usr/local/mysql-proxy/bin/mysql-proxyd [实例名] stop
7. 同理，restart为重启，status为查看状态
8. 配置文件解释
请查看官方文档
数据库配置
1. 1台master2台slave，都要配置相同的用户名密码，且都要可以远程访问
2. 分别进入3台服务器，创建相同的用户名密码，创建数据库test，设置权限
- CREATE USER 'test'@'%' IDENTIFIED BY 'test123';
- CREATE USER 'test'@'localhost' IDENTIFIED BY 'test123';
- grant all privileges on test.* to 'test'@'%' identified by 'test123';
- grant all privileges on test.* to 'test'@'localhost' identified by 'test123';
- flush privileges;
3. 主从数据库配
1. 配置master服务器
- 找到MySQL配置文件my.cnf，一般在etc目录下
- 修改配置文件
- [mysqld]
- # 一些其他配置
- ...
- #主从复制配置
- innodb_flush_log_at_trx_commit=1
- sync_binlog=1
- #需要备份的数据库
- binlog-do-db=test
- #不需要备份的数据库
- binlog-ignore-db=mysql
- #启动二进制文件
- log-bin=mysql-bin
- #服务器ID
- server-id=1
- # Disabling symbolic-links is recommended to prevent assorted security risks
- symbolic-links=0
- 重启数据库service mysql restart
- 进入数据库，配置主从复制的权限
- mysql -uroot -p123456
- grant replication slave on *.* to 'test'@'127.0.0.1' identified by 'test123';
- 查看主数据库信息，记住下面的File与Position的信息，它们是用来配置从数据库的关键信息。
- mysql> show master status;
- +------------------+----------+--------------+------------------+
- | File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
- +------------------+----------+--------------+------------------+
- | mysql-bin.000002 | 17620976 | test | mysql |
- +------------------+----------+--------------+------------------+
- 1 row in set (0.00 sec)
2. 配置两台salve服务器
- 找到配置文件my.cnf
- 修改配置文件如下
- [mysqld]
- # 一些其他配置
- ...
- # 几台服务器不能一样
- server-id=2
- # Disabling symbolic-links is recommended to prevent assorted security risks
- symbolic-links=0
- 进入数据库，配置从数据库的信息，这里输入刚才记录下来的File与Position的信息，并且在从服务器上执行(执行的时候，#行不要复制进去)：
- # master数据库的ip
- mysql> change master to master_host='192.168.20.122',
- # master的用户名
- master_user='buck',
- # 密码
- master_password='hello',
- # 端口
- master_port=3306,
- # master数据库的`File `
- master_log_file='mysql-bin.000002',
- # master数据库的`Position`
- master_log_pos=17620976,
- master_connect_retry=10;
- 启动进程
- mysql> start slave;
- Query OK, 0 rows affected (0.00 sec)
- 检查主从复制状态，要看到下列Slave_IO_Running、Slave_SQL_Running的信息中，两个都是Yes，才说明主从连接正确，如果有一个是No，需要重新确定刚才记录的日志信息，停掉“stop slave”重新进行配置主从连接。
- mysql> show slave status \G;
- *************************** 1. row ***************************
- Slave_IO_State: Waiting for master to send event
- Master_Host: 192.168.246.134
- Master_User: buck
- Master_Port: 3306
- Connect_Retry: 10
- Master_Log_File: mysql-bin.000002
- Read_Master_Log_Pos: 17620976
- Relay_Log_File: mysqld-relay-bin.000002
- Relay_Log_Pos: 251
- Relay_Master_Log_File: mysql-bin.000002
- 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: 17620976
- Relay_Log_Space: 407
- 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:
- 1 row in set (0.00 sec)
- ERROR:
- No query specified
Atlas配置
1. 使用Atlas的加密工具对上面用户的密码进行加密
- /usr/local/mysql-proxy/bin/encrypt test123
- 29uENYYsKLo=
2. 配置atlas
- 这是用来登录到Atlas的管理员的账号与密码，与之对应的是Atlas监听的管理接口IP和端口，也就是说需要设置管理员登录的端口，才能进入管理员界面，默认端口是2345，也可以指定IP登录，指定IP后，其他的IP无法访问管理员的命令界面。方便测试，我这里没有指定IP和端口登录。
- 配置主数据的地址与从数据库的地址，这里配置的主数据库是122，从数据库是123、124
- 主库的IP和端口，可设置多项，用逗号分隔
- proxy-backend-addresses = 192.168.20.122:3306
- #Atlas后端连接的MySQL从库的IP和端口，@后面的数字代表权重，用来作负载均衡，若省略则默认为1，可设置多项，用逗号分隔
- proxy-read-only-backend-addresses = 192.168.20.123:3306[@1](https://my.oschina.net/u/1198),192.168.20.124:3306@
- 这个是用来配置MySQL的账户与密码的，就是上面创建的用户，用户名是test,密码是test123,刚刚使用Atlas提供的工具生成了对应的加密密码
- pwds = buck:RePBqJ+5gI4=
3. 启动Atlas
- [root[@localhost](https://my.oschina.net/u/570656) /usr/local/mysql-proxy/bin]# ./mysql-proxyd test start
- OK: MySQL-Proxy of test is started
测试
1. 进入atlas的管理界面
- [root[@localhost](https://my.oschina.net/u/570656) ~]#mysql -h127.0.0.1 -P2345 -uuser -ppwd
- Welcome to the MySQL monitor. Commands end with ; or \g.
- Your MySQL connection id is 1
- Server version: 5.0.99-agent-admin
- Copyright (c) 2000, 2013, 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> select * from help;
- +----------------------------+---------------------------------------------------------+
- | command | description |
- +----------------------------+---------------------------------------------------------+
- | SELECT * FROM help | shows this help |
- | SELECT * FROM backends | lists the backends and their state |
- | SET OFFLINE $backend_id | offline backend server, $backend_id is backend_ndx's id |
- | SET ONLINE $backend_id | online backend server, ... |
- | ADD MASTER $backend | example: "add master 127.0.0.1:3306", ... |
- | ADD SLAVE $backend | example: "add slave 127.0.0.1:3306", ... |
- | REMOVE BACKEND $backend_id | example: "remove backend 1", ... |
- | SELECT * FROM clients | lists the clients |
- | ADD CLIENT $client | example: "add client 192.168.1.2", ... |
- | REMOVE CLIENT $client | example: "remove client 192.168.1.2", ... |
- | SELECT * FROM pwds | lists the pwds |
- | ADD PWD $pwd | example: "add pwd user:raw_password", ... |
- | ADD ENPWD $pwd | example: "add enpwd user:encrypted_password", ... |
- | REMOVE PWD $pwd | example: "remove pwd user", ... |
- | SAVE CONFIG | save the backends to config file |
- | SELECT VERSION | display the version of Atlas |
- +----------------------------+---------------------------------------------------------+
- 16 rows in set (0.00 sec)
- mysql>
2. 使用工作接口来访问
- [root@localhost ~]#mysql -h127.0.0.1 -P1234 -utest -ptest123
- Welcome to the MySQL monitor. Commands end with ; or \g.
- Your MySQL connection id is 34
- Server version: 5.0.81-log MySQL Community Server (GPL)
- Copyright (c) 2000, 2013, 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 |
- | test |
- +--------------------+
- 4 rows in set (0.00 sec)
- mysql>
使用可视化管理工具Navicat登录
使用用户名test、密码test123、端口1234、地址192.168.20.121正常登录。注意，这里登录的是atlas服务器，不再是任何一个MySQL服务器
