linux下配置nginx负载均衡例子

时间：2022-09-29 06:08:07

准备2台虚拟机：

linux下配置nginx负载均衡例子

分别在两个虚拟机上安装tomcat，并在服务器A安装nginx，其中nginx端口设置为了 70。

服务器A的tomcat安装目录：

linux下配置nginx负载均衡例子

服务器B的tomcat安装目录：

linux下配置nginx负载均衡例子

服务器A的nginx安装目录：

linux下配置nginx负载均衡例子

准备test.jsp文件，分别上传到tomcat的 ROOT 目录下：

上传到服务器A的test.jsp ：

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<title>Test Page</title>

</head>

<body>

Test1 Page!!!<br/>

remote ip :   <%=request.getHeader("X-real-ip") %>  <br/>

nginx server ip : <%=request.getRemoteAddr()%>

</body>

</html>

上传到服务器B 的test.jsp ：

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<title>Test Page</title>

</head>

<body>

Test2 Page!!!<br/>

remote ip :   <%=request.getHeader("X-real-ip") %>  <br/>

nginx server ip : <%=request.getRemoteAddr()%>

</body>

</html>

其中的  request.getHeader("X-real-ip") 用来获取在nginx里面设置的 客户端的真实IP，request.getRemoteAddr() 获取的是代理服务器nginx的IP。

nginx 配置文件nginx.conf ：

#user  nobody;

worker_processes  ;

#error_log  logs/error.log;

#error_log  logs/error.log  notice;

#error_log  logs/error.log  info;

#pid        logs/nginx.pid;

events {

    worker_connections  ;

}

http {

    include       mime.types;

    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '

                      '$status $body_bytes_sent "$http_referer" '

                      '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile        on;

    #tcp_nopush     on;

    #keepalive_timeout  ;

    keepalive_timeout  ;

    #gzip  on;

    #

    #

    #webapp

    upstream myapp {

          server 192.168.85.3: weight= max_fails= fail_timeout=30s;

          server 192.168.85.4: weight= max_fails= fail_timeout=30s;

    } 

    server {

        listen       ;

        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {

        #设置客户端真实ip地址

        proxy_set_header X-real-ip $remote_addr;

        #负载均衡反向代理

        proxy_pass http://myapp;

            root   html;

            index  index.html index.htm;

        }

    #配置反向代理tomcat服务器：拦截.jsp结尾的请求转向到tomcat

        #location ~ \.jsp$ {

        #设置客户端真实ip地址

    #    proxy_set_header X-real-ip $remote_addr;

        #    proxy_pass http://192.168.85.3:;

        #}    

        #error_page                /.html;

        # redirect server error pages to the static page /50x.html

        #

        error_page        /50x.html;

        location = /50x.html {

            root   html;

        }

        # proxy the PHP scripts to Apache listening on 127.0.0.1:

        #

        #location ~ \.php$ {

        #    proxy_pass   http://127.0.0.1;

        #}

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:

        #

        #location ~ \.php$ {

        #    root           html;

        #    fastcgi_pass   127.0.0.1:;

        #    fastcgi_index  index.php;

        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;

        #    include        fastcgi_params;

        #}

        # deny access to .htaccess files, if Apache's document root

        # concurs with nginx's one

        #

        #location ~ /\.ht {

        #    deny  all;

        #}

    }

    # another virtual host using mix of IP-, name-, and port-based configuration

    #

    #server {

    #    listen       ;

    #    listen       somename:;

    #    server_name  somename  alias  another.alias;

    #    location / {

    #        root   html;

    #        index  index.html index.htm;

    #    }

    #}

    # HTTPS server

    #

    #server {

    #    listen        ssl;

    #    server_name  localhost;

    #    ssl_certificate      cert.pem;

    #    ssl_certificate_key  cert.key;

    #    ssl_session_cache    shared:SSL:1m;

    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;

    #    ssl_prefer_server_ciphers  on;

    #    location / {

    #        root   html;

    #        index  index.html index.htm;

    #    }

    #}

    #

    server {

        listen ;

        server_name lhy.com;

        access_log  logs/lhy.access.log  main;

        location /{

        #正则表达式匹配uri方式：在/usr/local/nginx/lhy下建立一个test1234.html 然后使用正则匹配

    #location ~ test {

        #重写语法：if return (条件 = ~ ~*)

        #if ($remote_addr = 192.168.85.1) {

        #    return ;

        #}

        if ($http_user_agent ~* firefox) {

            rewrite ^.*$ /firefox.html;

            break;

        } 

        root lhy;

            index index.html;

        }

    location /goods {

        rewrite "goods-(\d{1,5})\.html" /goods-ctrl.html;

        root lhy;

        index index.html;

    }

    }

}

启动nginx、两台tomcat，访问 反向代理服务器nginx：http://192.168.85.3:70/test.jsp。

第一次访问，访问的是服务器A：

linux下配置nginx负载均衡例子

第二次访问，访问的是服务器B：

linux下配置nginx负载均衡例子

nginx+tomcat实现的  反向代理+负载均衡至此实现。

相关文章