MySQL5.6基于mysql-proxy实现读写分离

已经搭建好MySQL主从架构

10.205.22.185 #mysql-proxy

10.205.22.186 #master

10.205.22.187 #slave

1.安装mysql-proxy软件

wget http://cdn.mysql.com/archives/mysql-proxy/mysql-proxy-0.8.5-linux-el6-x86-64bit.tar.gz
useradd mysql-proxy -s /sbin/nologin
tar -xvf mysql-proxy-0.8.5-linux-el6-x86-64bit.tar.gz -C /usr/local/mysql-proxy

2.添加环境变量和授权

1.修改 /etc/profile文件
export PATH=$PATH:/usr/local/mysql-proxy/bin

2.修改/etc/ld.so.conf文件
/usr/local/mysql-proxy/lib

3.在master上添加proxy连接账户
grant all on *.* to 'admin'@'10.205.22.%' identified by 'admin';

3.编辑mysql-proxy配置文件

[mysql-proxy]
daemon = true
keepalive = true
pid-file = /var/run/mysql-proxy.pid
log-file = /var/log/mysql-proxy.log
log-level = debug
max-open-files = 1024
plugins = admin,proxy
user = mysql-proxy
#
#Proxy Configuration
proxy-address = 0.0.0.0:3307
proxy-backend-addresses = 10.205.22.186:3306
proxy-read-only-backend-addresses = 10.205.22.187:3306
proxy-lua-script = /usr/local/mysql-proxy/share/doc/mysql-proxy/rw-splitting.lua
#proxy-skip-profiling = true
#
# Admin Configuration
admin-address = 0.0.0.0:4041
admin-lua-script = /usr/local/mysql-proxy/lib/mysql-proxy/lua/admin.lua
admin-username = admin
admin-password = admin

4.启动mysql-proxy服务，查看proxy连接端口3307和管理端口4041是否启动

/mysql-proxy --defaults-file=/etc/mysql-proxy.cnf &

5.在客户端连接代理接口测试

1.在MySQL连接比较少的情况下测试，可以修改/usr/local/mysql-proxy/share/doc/mysql-proxy/rw-splitting.lua
　　min_idle_connections = 1,
　　max_idle_connections = 1,
默认为4,8

2.mysql -h10.205.22.185 -uadmin -padmin -P 3307
分别做插入和查询操作，查看是否读写分离。可开启mysql操作日志查看或者抓包。

6.在客户端连接管理端口查看

mysql -h10.205.22.185 -uadmin -padmin -P 4041
mysql> SELECT * FROM backends;
+-------------+--------------------+-------+------+------+-------------------+
| backend_ndx | address            | state | type | uuid | connected_clients |
+-------------+--------------------+-------+------+------+-------------------+
|           1 | 10.205.22.186:3306 | up    | rw   | NULL |                 0 |
|           2 | 10.205.22.187:3306 | up    | ro   | NULL |                 0 |
+-------------+--------------------+-------+------+------+-------------------+
2 rows in set (0.00 sec)

参考1，参考2