一、服务器的环境：
[root@VM_82_178_centos ~]# cat /etc/redhat-release
CentOS Linux release 7.4.1708 (Core)
[root@VM_82_178_centos ~]#
本地云主机安装有mysql-proxy-0.8.5
采用二进制安装mysql5.7二、mysql-proxy安装过程请看考如下链接：
https://blog.51cto.com/wujianwei/2087871
三、mysql-proxy配置文件如下：
[root@VM_82_178_centos ~]# cat /data/mysql-proxy/conf/mysql-proxy
[mysql-proxy]
user=mysql-proxy
daemon=true
keepalive=true
###日志级别
log-level=info
log-file=/data/mysql-proxy/log/mysql-proxy.log
pid-file =/data/mysql-proxy/log/mysql-proxy.pid
###本机ip地址
proxy-address=0.0.0.0:9198
#admin-address=127.0.0.1:9197
##backend主 注意addresses
proxy-backend-addresses=10.135.82.178四、启动命令：
/usr/local/mysql-proxy-0.8.5/bin/mysql-proxy --defaults-file=/data/mysql-proxy/conf/mysql-proxy
[root@VM_82_178_centos ~]# ss -lntup|grep mysql
tcp LISTEN 0 128 *:9198 *:* users:(("mysql-proxy",pid=7855,fd=10))
tcp LISTEN 0 128 :::3306 :::* users:(("mysqld",pid=5665,fd=31))五、mysql client版本测试：
mysql5.7的客户端mysql的开到此处登录不到后端的mysql server
[root@VM_82_178_centos ~]# /usr/local/mysql7/bin/mysql -V
/usr/local/mysql7/bin/mysql Ver 14.14 Distrib 5.7.24, for linux-glibc2.12 (x86_64) using EditLine wrapper
[root@VM_82_178_centos ~]#
[root@VM_82_178_centos ~]# /usr/local/mysql7/bin/mysql -uroot -p'69jianwuweimysql' -h10.135.82.178 -P9198
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.mysql8.0的客户端mysql的开到此处登录不到后端的mysql server
[root@VM_82_178_centos bin]# /usr/local/mysql8013/bin/mysql -V
/usr/local/mysql8013/bin/mysql Ver 8.0.13 for linux-glibc2.12 on x86_64 (MySQL Community Server - GPL)
[root@VM_82_178_centos bin]# /usr/local/mysql8013/bin/mysql -uroot -p'69jianwuweimysql' -h10.135.82.178 -P9198
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.mysql5.6的客户端mysql的可以登录后端的mysql server
[root@VM_82_178_centos bin]# /usr/local/mysql5.6.39/bin/mysql -V
/usr/local/mysql5.6.39/bin/mysql Ver 14.14 Distrib 5.6.39, for linux-glibc2.12 (x86_64) using EditLine wrapper
[root@VM_82_178_centos bin]# /usr/local/mysql5.6.39/bin/mysql -uroot -p'69jianwuweimysql' -h10.135.82.178 -P9198mysql5.5的客户端mysql的可以登录后端的mysql server
[root@VM_82_178_centos ~]# /usr/local/mysql5.5/bin/mysql -V
/usr/local/mysql5.5/bin/mysql Ver 14.14 Distrib 5.5.60, for linux-glibc2.12 (x86_64) using readline 5.1
[root@VM_82_178_centos ~]#
[root@VM_82_178_centos ~]# /usr/local/mysql5.5/bin/mysql -uroot -p'69jianwuweimysql' -h10.135.82.178 -P9198
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 38033
Server version: 5.7.24-log MySQL Community Server (GPL)
Copyright (c) 2000, 2018, 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.
[email protected] [(none)]>show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
| test01 |
| test02 |
+--------------------+
6 rows in set (0.13 sec)mariadb5.5的版本测试可以通过mysql-proxy登录后端的mysql server：
[root@VM_82_178_centos bin]# rpm -qa|grep mariadb
[root@VM_82_178_centos bin]# rpm -qa|grep mariadb
centos7的系统上安装mysql client的方式：
yum install -y mariadb.x86_64 mariadb-libs.x86_64
[root@VM_82_178_centos bin]# rpm -qa|grep mariadb
mariadb-5.5.60-1.el7_5.x86_64
mariadb-libs-5.5.60-1.el7_5.x86_64
[root@VM_82_178_centos bin]# mysql -V
mysql Ver 15.1 Distrib 5.5.60-MariaDB, for Linux (x86_64) using readline 5.1
[root@VM_82_178_centos bin]#
[root@VM_82_178_centos bin]# mysql -uroot -p'69jianwuweimysql' -h10.135.82.178 -P9198
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MySQL connection id is 38323
Server version: 5.7.24-log MySQL Community Server (GPL)
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
[email protected] [(none)]>show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
| test01 |
| test02 |
+--------------------+
6 rows in set (0.00 sec)六、登录云主机本地的mysql server，授权一个账户测试mysql-proxy代理后端数据库应用：
创建测试账户：
root@localhost [(none)]>grant all on test01.* to mpuser@'%' identified by '69jianwuweimysql';
Query OK, 0 rows affected, 1 warning (0.13 sec)
root@localhost [(none)]>flush privileges;
Query OK, 0 rows affected (0.10 sec)登录测试：
[root@VM_82_178_centos ~]# mysql -umpuser -p'69jianwuweimysql' -h10.135.82.178 -P9198
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MySQL connection id is 74544
Server version: 5.7.24-log MySQL Community Server (GPL)
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
[email protected] [(none)]>show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| test01 |
+--------------------+
2 rows in set (0.00 sec)
[email protected] [(none)]>\q通过云控制台的安全组，授权特定的外网ip,允许访问本云主机的数据库：
在远程的物理机器登录远端的云主机数据库：
[root@127 ~]# /usr/local/mysql5.5/bin/mysql -umpuser -p'69jianwuweimysql' -h119.29.97.131 -P9198
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 74679
Server version: 5.7.24-log MySQL Community Server (GPL)
Copyright (c) 2000, 2018, 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 |
| test01 |
+--------------------+
2 rows in set (0.04 sec)到此处简单的讲解和演示完毕