到此为止,NGINX已经可以正常启动了,我们可以cd到nginx安装目录执行 ./sbin/nginx 启动nginx.

    但是我们如果想要把nginx做成一个服务，必须要写一个shell.

    简单说一下，

    # chkconfig:   - 85 15 所有运行级别，启动优先级85, 关闭优先级15

    # processname: 进程名称

    # config:      nginx配置文件位置

    # config:      系统会优先找第一个，如果找不到再去找第二个

    # pidfile:     进程ID存放文件，用来存放程序启动后的进程ID

    # Source function library.  linux常用的方法库，有兴趣可以去看看service XXX status 就使用了里边的一个方法

    # Source networking configuration.  网络配置

 

#!/bin/sh  
#  
# nginx - this script starts and stops the nginx daemon  
#         by haitao.tu at 2009-12-15  
#         email:tuhaitao@foxmail.com  
#  
# chkconfig:   - 85 15  
# description:  Nginx is an HTTP(S) server, HTTP(S) reverse \  
#               proxy and IMAP/POP3 proxy server  
# processname: nginx  
# config:      /etc/nginx/nginx.conf  
# config:      /etc/sysconfig/nginx  
# pidfile:     /var/run/nginx.pid  
  
# Source function library.  
. /etc/rc.d/init.d/functions  
  
# Source networking configuration.  
. /etc/sysconfig/network  
  
# Check that networking is up.  
[ "$NETWORKING" = "no" ] && exit 0  
  
nginx="/usr/sbin/nginx"  
prog=$(basename $nginx)  
  
NGINX_CONF_FILE="/etc/nginx/nginx.conf"  
  
[ -f /etc/sysconfig/nginx ] && . /etc/sysconfig/nginx  
  
lockfile=/var/lock/subsys/nginx  
  
start() {  
    [ -x $nginx ] || exit 5  
    [ -f $NGINX_CONF_FILE ] || exit 6  
    echo -n {1}quot;Starting $prog: "  
    daemon $nginx -c $NGINX_CONF_FILE  
    retval=$?  
    echo  
    [ $retval -eq 0 ] && touch $lockfile  
    return $retval  
}  
  
stop() {  
    echo -n {1}quot;Stopping $prog: "  
    killproc $prog  
    retval=$?  
    echo  
    [ $retval -eq 0 ] && rm -f $lockfile  
    return $retval  
}  
  
restart() {  
    configtest_q || configtest || return 6  
    stop  
    start  
}  
  
reload() {  
    configtest_q || configtest || return 6  
    echo -n {1}quot;Reloading $prog: "  
    killproc $nginx -HUP  
    echo  
}  
  
configtest() {  
  $nginx -t -c $NGINX_CONF_FILE  
}  
  
configtest_q() {  
    configtest >/dev/null 2>&1  
}  
  
rh_status() {  
    status $prog  
}  
  
rh_status_q() {  
    rh_status >/dev/null 2>&1  
}  
  
# Upgrade the binary with no downtime.  
upgrade() {  
    local pidfile="/var/run/${prog}.pid"  
    local oldbin_pidfile="${pidfile}.oldbin"  
  
    configtest_q || configtest || return 6  
    echo -n {1}quot;Staring new master $prog: "  
    killproc $nginx -USR2  
    retval=$?  
    echo   
    sleep 1  
    if [[ -f ${oldbin_pidfile} && -f ${pidfile} ]];  then  
        echo -n {1}quot;Graceful shutdown of old $prog: "  
        killproc -p ${oldbin_pidfile} -QUIT  
        retval=$?  
        echo   
        return 0  
    else  
        echo {1}quot;Something bad happened, manual intervention required, maybe restart?"  
        return 1  
    fi  
}  
  
case "$1" in  
    start)  
        rh_status_q && exit 0  
        $1  
        ;;  
    stop)  
        rh_status_q || exit 0  
        $1  
        ;;  
    restart|configtest)  
        $1  
        ;;  
    force-reload|upgrade)  
        rh_status_q || exit 7  
        upgrade  
        ;;  
    reload)  
        rh_status_q || exit 7  
        $1  
        ;;  
    status|status_q)  
        rh_$1  
        ;;  
    condrestart|try-restart)  
        rh_status_q || exit 7  
        restart  
            ;;  
    *)  
        echo {1}quot;Usage: $0 {start|stop|reload|configtest|status|force-reload|upgrade|restart}"  
        exit 2  
esac 

 

 

    好了，已经做成chkconfig了，下边需要配置一下nginx反向代理,需要修改/usr/local/nginx/nginx.conf配置文件

 

user  nginx;  
worker_processes  2;  
  
error_log   /log/nginx/error.log;  
#error_log  /var/log/nginx/error.log  notice;  
#error_log  /var/log/nginx/error.log  info;  
  
pid         /run/nginx.pid;  
  
  
events {  
    use epoll; # 采用epoll,是linux下最快的event  
    worker_connections  2048;  
}  
  
  
http {  
    include       mime.types;  
    default_type  application/octet-stream;  
    sendfile        on;  
    keepalive_timeout  65;  
    #gzip  on;  
  
    #反向代理配置 ,向内网6台jboss转发  
    upstream jboss {  
        server 192.168.162.35:8080 weight=10;
        server 192.168.162.11:8080 weight=8;
        server 192.168.162.61:8080 weight=2;
    }  
  
    server {  
        listen       2011;  
        server_name  localhost;  
  
        location ~ ^/nginx_status/ {  
            stub_status on;  
            access_log off;  
        }  
  
        location / {  
            proxy_pass http://jboss;  
        }  
  
        error_page   500 502 503 504  /50x.html;  
        location = /50x.html {  
            root   html;  
        }  
  
    }  
  
} 

 

OK, 没什么大问题的话, 你的nginx已经具体负载均衡的功能了,

 

 

可能存在的问题

    1，  session复制问题

 

    2.页面同步

 

    3，确认nginx可以转发成功

 

    关于nginx配置文件的详细说明及配置方法,会在后续博文中继续和大家一起探讨.