下载地址:
mysql-proxy-0.8.3-linux-glibc2.3-x86-64bit.tar.gz
http://downloads.mysql.com/archives/proxy/
添加用户:
[root@martin tools]# groupadd -r -g 303 mysql-proxy [root@martin tools]# useradd -g mysql -u 303 -r -s /sbin/nologin mysql-proxy
[root@martin tools]# tar xf mysql-proxy-0.8.3-linux-glibc2.3-x86-64bit.tar.gz -C /usr/local/ [root@martin tools]# cd /usr/local/ [root@martin local]# ln -sv mysql-proxy-0.8.3-linux-glibc2.3-x86-64bit/ mysql-proxy
配置服务脚本:
[root@martin mysql-proxy]# vim /etc/rc.d/init.d/mysql-proxy #!/bin/bash # # mysql-proxy This script starts and stops the mysql-proxy daemon # # chkconfig: - 78 30 # processname: mysql-proxy # description: mysql-proxy is a proxy daemon for mysql # Source function library. . /etc/rc.d/init.d/functions prog="/usr/local/mysql-proxy/bin/mysql-proxy" conf="/etc/mysql-proxy.cnf" PROXY_PID="/var/run/mysql-proxy.pid" # Check that networking is up. [ ${NETWORKING} = "no" ] && exit 0 # Set default mysql-proxy configuration. ADMIN_USER="admin" ADMIN_PASSWD="admin" ADMIN_LUA_SCRIPT="/usr/local/mysql-proxy/share/doc/mysql-proxy/admin.lua" PROXY_OPTIONS="--daemon" PROXY_PID=/var/run/mysql-proxy.pid PROXY_USER="mysql-proxy" # Source mysql-proxy configuration. if [ -f /etc/sysconfig/mysql-proxy ]; then . /etc/sysconfig/mysql-proxy fi RETVAL=0 start() { echo -n $"Starting $prog: " daemon $prog --defaults-file=$conf &>/dev/null RETVAL=$? if [ $RETVAL -eq 0 ]; then touch /var/lock/subsys/mysql-proxy success echo -e "\r" fi } stop() { echo -n $"Stopping $prog: " killproc -p $PROXY_PID -d 3 $prog RETVAL=$? echo if [ $RETVAL -eq 0 ]; then rm -f /var/lock/subsys/mysql-proxy rm -f $PROXY_PID fi } # See how we were called. case "$1" in start) start ;; stop) stop ;; restart) stop start ;; condrestart|try-restart) if status -p $PROXY_PIDFILE $prog >&/dev/null; then stop start fi ;; status) status -p $PROXY_PID $prog ;; *) echo "Usage: $0 {start|stop|restart|reload|status|condrestart|try-restart}" RETVAL=1 ;; esac exit $RETVAL
[root@martin mysql-proxy]# chmod +x /etc/rc.d/init.d/mysql-proxy [root@martin mysql-proxy]# chkconfig --add mysql-proxy
为服务脚本提供配置文件/etc/mysql-proxy.cnf
[root@martin ~]# vim /etc/mysql-proxy.cnf [mysql-proxy] daemon = true #以守护进程模式启动mysql-proxy pid-file = /var/run/mysql-proxy.pid log-level = info #日志级别 plugins = admin,proxy #在mysql-proxy启动时加载的插件; user = mysql-proxy #运行mysql-proxy进程的用户; # #Proxy Configuration proxy-address = 0.0.0.0:3307 #代理服务监听的地址和端口; proxy-backend-addresses = 192.168.1.222:3306#后端mysql服务器的地址和端口一般是主服务器; proxy-read-only-backend-addresses = 192.168.1.223:3306#从服务器 proxy-lua-script = /usr/local/mysql-proxy/share/doc/mysql-proxy/rw-splitting.lua#完成mysql代理功能的Lua脚本 #proxy-skip-profiling = true # 禁用profile # # Admin Configuration admin-address = 0.0.0.0:4042 #管理模块监听的地址和端口 admin-lua-script = /usr/local/mysql-proxy/share/doc/mysql-proxy/admin.lua admin-username = admin#管理模块用户 admin-password = admin#管理模块密码
修改权限:
[root@martin mysql-proxy]# chmod 660 /etc/mysql-proxy.cnf
复制如下内容建立admin.lua文件,将其保存至/usr/local/mysql-proxy/share/doc/mysql-proxy/目录中。
[root@martin mysql-proxy]# vim /usr/local/mysql-proxy/share/doc/mysql-proxy/admin.lua --[[ $%BEGINLICENSE%$ Copyright (c) 2007, 2012, Oracle and/or its affiliates. All rights reserved. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA $%ENDLICENSE%$ --]] function set_error(errmsg) proxy.response = { type = proxy.MYSQLD_PACKET_ERR, errmsg = errmsg or "error" } end function read_query(packet) if packet:byte() ~= proxy.COM_QUERY then set_error("[admin] we only handle text-based queries (COM_QUERY)") return proxy.PROXY_SEND_RESULT end local query = packet:sub(2) local rows = { } local fields = { } if query:lower() == "select * from backends" then fields = { { name = "backend_ndx", type = proxy.MYSQL_TYPE_LONG }, { name = "address", type = proxy.MYSQL_TYPE_STRING }, { name = "state", type = proxy.MYSQL_TYPE_STRING }, { name = "type", type = proxy.MYSQL_TYPE_STRING }, { name = "uuid", type = proxy.MYSQL_TYPE_STRING }, { name = "connected_clients", type = proxy.MYSQL_TYPE_LONG }, } for i = 1, #proxy.global.backends do local states = { "unknown", "up", "down" } local types = { "unknown", "rw", "ro" } local b = proxy.global.backends[i] rows[#rows + 1] = { i, b.dst.name, -- configured backend address states[b.state + 1], -- the C-id is pushed down starting at 0 types[b.type + 1], -- the C-id is pushed down starting at 0 b.uuid, -- the MySQL Server‘s UUID if it is managed b.connected_clients -- currently connected clients } end elseif query:lower() == "select * from help" then fields = { { name = "command", type = proxy.MYSQL_TYPE_STRING }, { name = "description", type = proxy.MYSQL_TYPE_STRING }, } rows[#rows + 1] = { "SELECT * FROM help", "shows this help" } rows[#rows + 1] = { "SELECT * FROM backends", "lists the backends and their state" } else set_error("use ‘SELECT * FROM help‘ to see the supported commands") return proxy.PROXY_SEND_RESULT end proxy.response = { type = proxy.MYSQLD_PACKET_OK, resultset = { fields = fields, rows = rows } } return proxy.PROXY_SEND_RESULT end
启动脚本:
[root@martin mysql-proxy]# /etc/init.d/mysql-proxy restart Stopping /usr/local/mysql-proxy/bin/mysql-proxy: [ OK ] Starting /usr/local/mysql-proxy/bin/mysql-proxy: [ OK ] [root@martin mysql-proxy]# ss -lntup|grep mysql-proxy tcp LISTEN 0 128 *:3307 *:* users:(("mysql-proxy",111652,10)) tcp LISTEN 0 128 *:4042 *:* users:(("mysql-proxy",111652,9))
主服务器创建代理账号:
mysql> grant all on *.* to ‘admin‘@‘192.168.1.%‘ identified by ‘222222‘; mysql> flush privileges;
查看代理信息:
[root@martin ~]# mysql -uadmin -padmin -h192.168.1.222 --port=4042 mysql> SELECT * FROM backends; +-------------+--------------------+---------+------+------+-------------------+ | backend_ndx | address | state | type | uuid | connected_clients | +-------------+--------------------+---------+------+------+-------------------+ | 1 | 192.168.1.222:3306 | up | rw | NULL | 0 | | 2 | 192.168.1.223:3306 | unknown | ro | NULL | 0 | +-------------+--------------------+---------+------+------+-------------------+
登入代理:
[root@martin mysql-proxy]# mysql -uadmin -p222222 -h192.168.1.222 --port=3307
over
原文地址:http://9173436.blog.51cto.com/9163436/1783223