时间:2020-10-18 11:16:14 | 栏目:Mysql | 点击:次
简介
Part1:写在最前
OneProxy平民软件完全自主开发的分布式数据访问层,帮助用户在MySQL/PostgreSQL集群上快速搭建支持分库分表的分布式数据库中间件,也是一款具有SQL白名单(防SQL注入)及IP白名单功能的SQL防火墙软件。采用与MySQL Proxy一致的反向协议输出模式,对应用非常简单和透明易用,让用户畏惧的数据库故障切换(Failover)、读写分离(Read/Write Split)、分库分表(Horizontal Partitioning)等复杂方案变得极其简单可控!基于Libevent机制实现,单个实例可以实现25万的SQL转发能力,用一个OneProxy节点可以带动整个MySQL集群,为业务发展贡献一份力量。
Part2:环境简介
HE1:192.168.1.248 slave1
HE2:192.168.1.249 slave2
HE3:192.168.1.250 Master
HE4:192.168.1.251 Oneproxy
环境构建
Part1:安装Oneproxy
[root@HE4 ~]# tar xvf oneproxy-rhel5-linux64-v5.8.5-ga.tar.gz [root@HE4 oneproxy]# ls bin conf demo.sh log oneproxy.service README testadmin.sql testautocommit.sql testproxy.sql trantest.sql
Part2:构建主从环境
本文的架构是一主两从,HE3作为Master,HE1,HE2作为Slave。主从的构建不是本文的重点,需要的可移步:
Part3:配置Oneproxy
目录中的demo是初次启动脚本,oneproxy.service是启停脚本,在新版的oneproxy中,conf文件夹的proxy.cnf为配置文件
[root@HE4 oneproxy]# cat demo.sh #/bin/bash # export ONEPROXY_HOME=/root/oneproxy # valgrind --leak-check=full \ ${ONEPROXY_HOME}/bin/oneproxy --defaults-file=${ONEPROXY_HOME}/conf/proxy.conf
我们将demo.sh中的ONEPROXY_HOME变更为解压oneproxy时所在的目录
[root@HE4 oneproxy]# cat oneproxy.service #!/bin/bash # chkconfig: - 30 21 # description: OneProxy service. # Source Function Library . /etc/init.d/functions # OneProxy Settings ONEPROXY_HOME=/root/oneproxy ONEPROXY_SBIN="${ONEPROXY_HOME}/bin/oneproxy" ONEPROXY_CONF="${ONEPROXY_HOME}/conf/proxy.conf" ONEPROXY_PID="${ONEPROXY_HOME}/log/oneproxy.pid" RETVAL=0 prog="OneProxy" start() { echo -n $"Starting $prog ... " daemon $ONEPROXY_SBIN --defaults-file=$ONEPROXY_CONF RETVAL=$? echo } stop() { echo -n $"Stopping $prog ... " if [ -e ${ONEPROXY_PID} ]; then daemon kill -INT $(cat ${ONEPROXY_PID}) RETVAL=$? fi echo } restart(){ stop sleep 1 start } case "$1" in start) start ;; stop) stop ;; restart) restart ;; *) echo $"Usage: $0 {start|stop|restart}" RETVAL=1 esac exit $RETVAL
同时,将oneproxy.service中的ONEPROXY_HOME也改为解压时的目录
进入oneproxy中的bin目录,使用mysqlpwd对密码进行加密
[root@HE4 oneproxy]# cd bin/ [root@HE4 bin]# ls mysqlpwd oneproxy [root@HE4 bin]# ./mysqlpwd MANAGER 1C6D087BA5D2607A27DECB2F2AFE247E911E877A
编辑proxy.cnf中的内容
[root@HE4 conf]# cat proxy.conf [oneproxy] keepalive = 1 event-threads = 4 proxy-group-policy.2 = test:read-slave log-file = log/oneproxy.log pid-file = log/oneproxy.pid lck-file = log/oneproxy.lck proxy-auto-readonly = 1 proxy-forward-clientip = 1 proxy-trans-debug = 1 proxy-address = :3307 mysql-version = 5.7.16 proxy-master-addresses.1 = 192.168.1.250:3306@test proxy-slave-addresses.2 = 192.168.1.248:3306@test proxy-slave-addresses.3 = 192.168.1.249:3306@test proxy-user-list = sys_admin/1C6D087BA5D2607A27DECB2F2AFE247E911E877A@test proxy-user-group = test:sys_admin/1C6D087BA5D2607A27DECB2F2AFE247E911E877A@test proxy-part-template = conf/template.txt proxy-part-tables.1 = conf/part.txt proxy-part-tables.2 = conf/part2.txt proxy-part-tables.3 = conf/cust1.txt proxy-charset = utf8_bin proxy-secure-client = 127.0.0.1 # proxy-license = 32C54560E06EFF3E proxy-httpserver = :8080 proxy-httptitle = OneProxy Monitor
Part4:启动Oneproxy
[root@HE4 oneproxy]# ./demo.sh [root@HE4 oneproxy]# ./oneproxy.service restart Stopping OneProxy ... [ OK ] Starting OneProxy ... [ OK ]
测试
Part1:Oneproxy状态校验
浏览器打开192.168.1.251:8080端口能够看到oneproxy的管理页面
这里可以看到主从的各种状态信息。
Part2:负载均衡与读写分离校验
[root@HE1 ~]# mysql -usys_admin -pMANAGER -h192.168.1.251 -P3307 -e"select @@hostname;" mysql: [Warning] Using a password on the command line interface can be insecure. +------------+ | @@hostname | +------------+ | HE1 | +------------+ [root@HE1 ~]# mysql -usys_admin -pMANAGER -h192.168.1.251 -P3307 -e"select @@hostname;" mysql: [Warning] Using a password on the command line interface can be insecure. +------------+ | @@hostname | +------------+ | HE2 | +------------+ [root@HE1 ~]# mysql -usys_admin -pMANAGER -h192.168.1.251 -P3307 -e"select @@hostname;" mysql: [Warning] Using a password on the command line interface can be insecure. +------------+ | @@hostname | +------------+ | HE1 | +------------+ [root@HE1 ~]# mysql -usys_admin -pMANAGER -h192.168.1.251 -P3307 -e"select @@hostname;" mysql: [Warning] Using a password on the command line interface can be insecure. +------------+ | @@hostname | +------------+ | HE2 | +------------+ [root@HE1 ~]# mysql -usys_admin -pMANAGER -h192.168.1.251 -P3307 -e"select @@hostname;" mysql: [Warning] Using a password on the command line interface can be insecure. +------------+ | @@hostname | +------------+ | HE1 | +------------+ [root@HE1 ~]# mysql -usys_admin -pMANAGER -h192.168.1.251 -P3307 -e"begin;select @@hostname;commit;" mysql: [Warning] Using a password on the command line interface can be insecure. +------------+ | @@hostname | +------------+ | HE3 | +------------+ [root@HE1 ~]# mysql -usys_admin -pMANAGER -h192.168.1.251 -P3307 -e"begin;select @@hostname;commit;" mysql: [Warning] Using a password on the command line interface can be insecure. +------------+ | @@hostname | +------------+ | HE3 | +------------+
可以看到HE1,HE2两个slave作为负载均衡没有问题,HE3作为写服务器也没有问题。
――总结――
OneProxy配合MySQL实现读写分离与负载均衡实验构建成功,Oneproxy还具有分库分表功能,今后会进一步研究。由于笔者的水平有限,编写时间也很仓促,文中难免会出现一些错误或者不准确的地方,不妥之处恳请读者批评指正。