安装

[root@db3 software]# rpm -ivh Atlas-2.2.1.el6.x86_64.rpm
[root@db3 software]# cp /usr/local/mysql-proxy/conf/test.cnf /usr/local/mysql-proxy/conf/test.cnf.bak
[root@db3 software]# vim /usr/local/mysql-proxy/conf/test.cnf
[mysql-proxy]
admin-username = user
admin-password = pwd
proxy-backend-addresses = 192.168.31.190:3306
proxy-read-only-backend-addresses = 192.168.31.180:3306,192.168.31.181:3306
pwds = user1:+jKsgB3YAG8=, user2:GS+tr4TPgqc=
daemon = true
keepalive = true
event-threads = 8
log-level = message
log-path = /usr/local/mysql-proxy/log
sql-log = ON
proxy-address = 0.0.0.0:33060
admin-address = 0.0.0.0:2345
charset=utf8

# 启动Atlas
[root@db3 software]# /usr/local/mysql-proxy/bin/mysql-proxyd test start
OK: MySQL-Proxy of test is started

# 查看端口
[root@db3 software]# ps -ef | grep proxy
[root@db3 software]# netstat -tnlp | grep proxy
tcp        0      0 0.0.0.0:2345            0.0.0.0:*               LISTEN      3784/mysql-proxy
tcp        0      0 0.0.0.0:33060           0.0.0.0:*               LISTEN      3784/mysql-proxy

生产用户要求

开发人员申请一个应用用户app(select update insert) 密码123456，要通过192.168.31.%网段登录

# 1.在主库中，创建用户
grant select,update,insert on *.* to app@'192.168.31.%' identified by '123456';

# 2.在Atlas中添加用户
[root@db3 ~]# /usr/local/mysql-proxy/bin/encrypt 123456
/iZxz+0GRoA=
[root@db3 ~]# vim /usr/local/mysql-proxy/conf/test.cnf
pwds = app:/iZxz+0GRoA=

# 3.重启服务
[root@db3 ~]# /usr/local/mysql-proxy/bin/mysql-proxyd test restart
OK: MySQL-Proxy of test is stopped
OK: MySQL-Proxy of test is started

# 4.连接测试
[root@db3 ~]# mysql -uapp -p123456 -h 192.168.31.182 -P 33060

db3 [(none)]>select @@server_id;
+-------------+
| @@server_id |
+-------------+
|          52 |
+-------------+
1 row in set (0.00 sec)

db3 [(none)]>select @@server_id;
+-------------+
| @@server_id |
+-------------+
|          51 |
+-------------+

Atlas基本管理

在线修改Atlas，不用修改配置文件重启

# 连接管理接口
[root@db3 ~]# mysql -uuser -ppwd -h127.0.0.1 -P2345

# 查看所有管理命令

db3 [(none)]>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)

# 查看后端所有节点的情况
db3 [(none)]>select * from backends;
+-------------+---------------------+-------+------+
| backend_ndx | address             | state | type |
+-------------+---------------------+-------+------+
|           1 | 192.168.31.190:3306 | up    | rw   |
|           2 | 192.168.31.180:3306 | up    | ro   |
|           3 | 192.168.31.181:3306 | up    | ro   |
+-------------+---------------------+-------+------+
3 rows in set (0.00 sec)

# 下线3号节点
db3 [(none)]>set offline 3;

# 动态删除节点
db3 [(none)]>remove backend 3;

# 动态添加节点
db3 [(none)]>add slave 192.168.31.181:3306

# 保存配置到配置文件
db3 [(none)]>save config;