nginx安装和配置负载均衡

朴灿烈づ我的快乐病毒、 2023-07-17 06:53 13阅读 0赞

一.nginx安装

步骤1：  
yum install gcc-c++ -y  
yum install -y pcre pcre-devel  
yum install -y zlib zlib-devel  
yum install -y openssl openssl-devel

步骤2：解压nginx-1.8.0.tar.gz文件  
tar -zxvf nginx-1.8.0.tar.gz

步骤3：配置nginx参数  
注意：下边将临时文件目录指定为/var/temp/nginx，需要在/var 下创建temp及nginx目录  
cd /var  
mkdir temp  
cd temp  
mkdir nginx  
\---------------------  
cd nginx-1.8.0  
参数设置如下：  
./configure  
–prefix=/usr/local/nginx  
–pid-path=/var/run/nginx/nginx.pid  
–lock-path=/var/lock/nginx.lock  
–error-log-path=/var/log/nginx/error.log  
–http-log-path=/var/log/nginx/access.log  
–with-http\_gzip\_static\_module  
–http-client-body-temp-path=/var/temp/nginx/client  
–http-proxy-temp-path=/var/temp/nginx/proxy  
–http-fastcgi-temp-path=/var/temp/nginx/fastcgi  
–http-uwsgi-temp-path=/var/temp/nginx/uwsgi  
–http-scgi-temp-path=/var/temp/nginx/scgi

步骤4：编译和安装  
cd nginx-1.8.0  
make  
make install  
安装成功后查看目录  
cd …/nginx  
ll

步骤5：启动nginx、停止nginx  
–启动nginx----------------  
cd /usr/local/nginx/sbin/  
./nginx  
ps aux|grep nginx

–指定nginx启动配置文件------------------  
./nginx -c /usr/local/nginx/conf/nginx.conf

–停止nginx----------------  
cd /usr/local/nginx/sbin  
./nginx -s stop

–nginx完整停止----------------  
cd /usr/local/nginx/sbin  
./nginx -s quit

步骤6：重启nginx  
cd /usr/local/nginx/sbin/  
./nginx -s reload

步骤7：开机自启动nginx配置  
\-------编写shell脚本----------------  
vi /etc/init.d/nginx  
内容如下：

#!/bin/bash
    # nginx Startup script for the Nginx HTTP Server
    # it is v.0.0.2 version.
    # 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: /var/run/nginx.pid
    # config: /usr/local/nginx/conf/nginx.conf
    nginxd=/usr/local/nginx/sbin/nginx
    nginx_config=/usr/local/nginx/conf/nginx.conf
    nginx_pid=/var/run/nginx.pid
    RETVAL=0
    prog="nginx"
    # Source function library.
    . /etc/rc.d/init.d/functions
    # Source networking configuration.
    . /etc/sysconfig/network
    # Check that networking is up.
    [ ${ NETWORKING} = "no" ] && exit 0
    [ -x $nginxd ] || exit 0
    # Start nginx daemons functions.
    start() { 
    if [ -e $nginx_pid ];then
    echo "nginx already running...."
    exit 1
    fi
    echo -n $"Starting $prog: "
    daemon $nginxd -c ${ nginx_config}
    RETVAL=$?
    echo
    [ $RETVAL = 0 ] && touch /var/lock/subsys/nginx
    return $RETVAL
    }
    # Stop nginx daemons functions.
    stop() { 
    echo -n $"Stopping $prog: "
    killproc $nginxd
    RETVAL=$?
    echo
    [ $RETVAL = 0 ] && rm -f /var/lock/subsys/nginx /var/run/nginx.pid
    }
    # reload nginx service functions.
    reload() { 
    echo -n $"Reloading $prog: "
    #kill -HUP `cat ${nginx_pid}`
    killproc $nginxd -HUP
    RETVAL=$?
    echo
    }
    # See how we were called.
    case "$1" in
    start)
    start
    ;;
    stop)
    stop
    ;;
    reload)
    reload
    ;;
    restart)
    stop
    start
    ;;
    status)
    status $prog
    RETVAL=$?
    ;;
    *)
    echo $"Usage: $prog {start|stop|restart|reload|status|help}"
    exit 1
    esac
    exit $RETVAL

\-----设置文件的访问权限----------------  
chmod a+x /etc/init.d/nginx

说明：  
(a+x ==> all user can execute 所用户可执行)：

–加入到rc.local文件中----------------  
vi /etc/rc.local  
末尾加入：/etc/init.d/nginx start

–查看nginx状态、启动、停止、重启----------------  
/etc/init.d/nginx status  
/etc/init.d/nginx start  
/etc/init.d/nginx stop  
/etc/init.d/nginx restart

二.nginx负载均衡配置

1.  修改nginx/conf/nginx.conf 配置如下  
    1 upstream 配置负载均衡  
    2 server nginx 代理的服务器  
    3 weight:权重  
    4 proxy\_pass:访问nginx 的地址名称  
    2.nginx.conf配置如下：  
    upstream www.ego.com\{  
    server 192.168.126.146:1080 weight=2;  
    server 192.168.126.146:2080 weight=1;  
    server 192.168.126.146:3080 weight=1;  
    server 192.168.126.146:4080 weight=1;  
    \}  
    server\{  
    listem 80;  
    server\_name www.ego.com;  
    location /\{  
    proxy\_pass http://www.ego.com;  
    \}  
    …  
    \}