LNMP之Nginx负载均衡（二）

标签：浏览器   防火墙   service   配置文件   nginx   

安装必须插件：

yum install gcc-c++ autoconf automake

yum install zlib zlib-devel opensslopenssl--devel pcre pcre-devel

安装nginx：

./configure

make

make install

关闭防火墙或添加配置项：

service iptables stop

chkconfig iptables off

检查配置文件是否正确：

/usr/local/nginx/sbin/nginx -t -c /usr/local/nginx/conf/nginx.conf

启动nginx：

cd /usr/local/nginx/sbin

./nginx

查询进程号：

ps -ef | grep nginx

停止进程：

/usr/local/nginx/sbin/nginx -s quit

重启：

/usr/local/nginx/sbin/nginx -s reload

测试：

测试端口：netstat -na|grep 80

浏览器中测试：http://ip:80

修改Nginx的配置文件nginx.conf，内容如下，实现反向代理负载均衡：

#user  nobody;
worker_processes  2;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

events {
    worker_connections  10240;
}


http {
    
include mime.types;
default_type  application/octet-stream;

server_names_hash_bucket_size 128;
client_header_buffer_size 32k;
large_client_header_buffers 4 32k;
client_max_body_size 8m;

sendfile on;
tcp_nopush on;
tcp_nodelay on;

    upstream  192.168.2.62 {
                  server 192.168.2.62:8081;
                  server 192.168.2.62:8082;     
        }
   
     server {

           listen 80;
           
           server_name 192.168.2.62;
           location / {
           proxy_pass http://192.168.2.62;
           proxy_set_header  X-Real-IP  $remote_addr;

}

}

}

设置Nginx自动启动，启动脚本如下：

#!/bin/bash
# nginx Startup script for the Nginx HTTP Server
# chkconfig: - 85 15
# description: Nginx is a high-performance web and proxy server.
# It has a lot of features, but it‘s not for everyone.
# processname: nginx
# pidfile: /usr/local/nginx/logs/nginx.pid
# config: /usr/local/nginx/conf/nginx.conf

nginxd=/usr/local/nginx/sbin/nginx
nginx_config=/usr/local/nginx/conf/nginx.conf

RETVAL=0
prog="nginx"


# Start nginx daemons functions.

start() {

if [ -e /usr/local/nginx/logs/nginx.pid ];then
   echo "nginx already running...."
   exit 1
fi

   echo -n "Starting $prog: "
   $nginxd -c ${nginx_config}
   RETVAL=$?
   echo
   [ $RETVAL = 0 ] && touch /var/lock/subsys/nginx
   echo -n "nginx starting done"
   return $RETVAL
}


# Stop nginx daemons functions.

stop() {

if [ ! -e /usr/local/nginx/logs/nginx.pid ];then
   echo "nginx not running...."
   exit 1
fi

   echo -n "Stopping $prog: "
   $nginxd -s quit
   sleep 2s
   RETVAL=$?
   echo
   [ $RETVAL = 0 ] && rm -f /var/lock/subsys/nginx /usr/local/nginx/logs/nginx.pid
}


# See how we were called.

case "$1" in

start)

        start
        ;;

stop)

        stop
        ;;


restart)

        stop
        start
        ;;


*)

        echo $"Usage: $prog {start|stop|restart}"
        exit 1

esac
exit $RETVAL

本文出自 “IT梦工厂” 博客，请务必保留此出处http://fly520.blog.51cto.com/2181586/1695438

LNMP之Nginx负载均衡（二）

标签：浏览器   防火墙   service   配置文件   nginx   

原文地址：http://fly520.blog.51cto.com/2181586/1695438