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實(shí)驗(yàn)環(huán)境：RHEL6.6-x86-64mysql-proxy-0.8.5-linux-glibc2.3-x86-64bit.tar.gzmysql-5.6...
實(shí)驗(yàn)環(huán)境：RHEL6.6-x86-64 mysql-proxy-0.8.5-linux-glibc2.3-x86-64bit.tar.gz mysql-5.6.14-linux-glibc2.5-x86_64.tar.gz 為了減輕數(shù)據(jù)庫負(fù)載，可以考慮使用讀寫分離來實(shí)現(xiàn)。目前實(shí)現(xiàn)讀寫分離的方式大約有兩種： 基于程序代碼實(shí)現(xiàn) 在程序代碼中根據(jù)select、insert語句進(jìn)行路由分類。讀寫分別由不同Server響應(yīng)。 基于中間代理層實(shí)現(xiàn) 代理位于客戶端與服務(wù)端之間，代理層接收客戶端請求后，判斷讀寫請求轉(zhuǎn)發(fā)至不同Server。 mysql-proxy便是其中一種。它可以監(jiān)視，分析，改變它們的會(huì)話。他有多種用途，負(fù)載均衡， 查詢分析，查詢過濾和修改等。
MySQL主從搭建，請參考我的另一篇文章，，這里不再贅述。 安裝mysql-proxy # tar xf mysql-proxy-0.8.5-linux-glibc2.3-x86-64bit.tar.gz -C /usr/local/ # cd /usr/local/ # ln -s mysql-proxy-0.8.5-linux-glibc2.3-x86-64bit mysql-proxy 為/etc/init.d/mysql-proxy提供參數(shù) # vim /etc/sysconfig/mysql-proxy ADMIN_USER="admin" ADMIN_PASSWORD="admin" ADMIN_ADDRESS="" PROXY_ADDRESS="0.0.0.0:3306" PROXY_USER="mysql-proxy" PROXY_PID=/var/run/mysql-proxy.pid PROXY_OPTIONS="--daemon" ADMIN_LUA_SCRIPT="/usr/local/mysql-proxy/share/doc/mysql-proxy/admin.lua" RW_SPLITTING_LUA_SCRIPT=/usr/local/mysql-proxy/share/doc/mysql-proxy/rw-splitting.lua PROXY_OPTIONS="--daemon --log-level=info --log-file="/var/log/mysql-proxy.log" --plugins=proxy --plugins=admin --proxy-backend-addresses=192.168.1.5:3306 --proxy-read-only-backend-addresses=192.168.1.6:3306 --proxy-lua-script=$RW_SPLITTING_LUA_SCRIPT --pid-file=$PROXY_PID --proxy-address=$PROXY_ADDRESS --user=$PROXY_USER --admin-username=$ADMIN_USER --admin-lua-script=$ADMIN_LUA_SCRIPT --admin-password=$ADMIN_PASSWORD"為mysql-proxy提供sysv風(fēng)格腳本 vim /etc/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" # Source networking configuration. if [ -f /etc/sysconfig/network ]; then . /etc/sysconfig/network fi # Check that networking is up. [ ${NETWORKING} = "no" ] && exit 0 # Set default mysql-proxy configuration. #ADMIN_LUA_SCRIPT="/usr/local/mysql-proxy/share/doc/mysql-proxy/admin.lua" #PROXY_OPTIONS="--daemon" #PROXY_PID=/var/run/mysql-proxy.pid # Source mysql-proxy configuration. if [ -f /etc/sysconfig/network ]; then . /etc/sysconfig/network fi # Check that networking is up. [ ${NETWORKING} = "no" ] && exit 0 # 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 $PROXY_OPTIONS RETVAL=$? echo if [ $RETVAL -eq 0 ]; then touch /var/lock/subsys/mysql-proxy 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 |
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