CentOS 6.4 YUM 安装MySQL Proxy-优快云博客

本文详细介绍如何在CentOS系统中安装与配置MySQL Proxy服务，包括安装步骤、配置文件的详细说明及启动脚本的调整等内容。此外还针对常见的配置问题提供了解决方案。

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5.2. CentOS

# yum install mysql-proxy

# cat /etc/sysconfig/mysql-proxy
# Options for mysql-proxy
ADMIN_USER="admin"
ADMIN_PASSWORD=""
ADMIN_LUA_SCRIPT="/usr/lib64/mysql-proxy/lua/admin.lua"
PROXY_USER="mysql-proxy"
PROXY_OPTIONS="--daemon --log-level=info --log-use-syslog"

修改PROXY_OPTIONS选项

#PROXY_OPTIONS="--daemon --log-level=info --log-use-syslog"
PROXY_OPTIONS="--defaults-file=/etc/mysql/mysql-proxy.cnf"

# mkdir /etc/mysql
# vim /etc/mysql/mysql-proxy.cnf

[mysql-proxy]
daemon = true
user = mysql-proxy
proxy-skip-profiling = true
keepalive = true
;max-open-files = 2048
event-threads = 512
pid-file = /var/run/mysql-proxy.pid
log-file = /var/log/mysql-proxy.log
log-level = debug
admin-address=:4401
admin-username=admin
admin-password=passw0rd
admin-lua-script=/usr/lib64/mysql-proxy/lua/admin.lua
proxy-address = 0.0.0.0:3307
proxy-backend-addresses = 192.168.2.1:3306
proxy-read-only-backend-addresses=192.168.6.2:3306, 192.168.6.1:3306
proxy-lua-script=/usr/lib64/mysql-proxy/lua/proxy/balance.lua

修复启动脚本BUG

# vim /etc/init.d/mysql-proxy

#daemon $prog $PROXY_OPTIONS --pid-file=$PROXY_PID --user=$PROXY_USER --admin-username="$ADMIN_USER" --admin-lua-script="$ADMIN_LUA_SCRIPT" --admin-password="$ADMIN_PASSWORD" 注视这行，改为下面的一行代码
daemon $prog $PROXY_OPTIONS --pid-file=$PROXY_PID

日志

# cat /var/log/messages | grep mysql-proxy

5.2.1. FAQ

(critical) (libevent) evsignal_init: socketpair: Too many open files

;max-open-files = 2048

注释max-open-files = 2048，使用ulimit -SHn 2048设置