准备2台虚拟机：
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：
服务器B的tomcat安装目录：
服务器A的nginx安装目录：
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 1;
#error_log logs/error.log;
#error_log logs/error.log notice;
#error_log logs/error.log info;
#pid logs/nginx.pid;
events {
worker_connections 1024;
}
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 0;
keepalive_timeout 65;
#gzip on;
#
#
#webapp
upstream myapp {
server 192.168.85.3:8080 weight=1 max_fails=2 fail_timeout=30s;
server 192.168.85.4:8080 weight=1 max_fails=2 fail_timeout=30s;
}
server {
listen 70;
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 $remote_addr;
# proxy_pass http://192.168.85.3:8080;
#}
#error_page 404 /404.html;
# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
# proxy the PHP scripts to Apache listening on 127.0.0.1:80
#
#location ~ \.php$ {
# proxy_pass http://127.0.0.1;
#}
# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
#location ~ \.php$ {
# root html;
# fastcgi_pass 127.0.0.1:9000;
# fastcgi_index index.php;
# fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
# include fastcgi_params;
#}
# deny access to .htaccess files, if Apache‘s document root
# concurs with nginx‘s one
#
#location ~ /\.ht {
# deny all;
#}
}
# another virtual host using mix of IP-, name-, and port-based configuration
#
#server {
# listen 8000;
# listen somename:8080;
# server_name somename alias another.alias;
# location / {
# root html;
# index index.html index.htm;
# }
#}
# HTTPS server
#
#server {
# listen 443 ssl;
# server_name localhost;
# ssl_certificate cert.pem;
# ssl_certificate_key cert.key;
# ssl_session_cache shared:SSL:1m;
# ssl_session_timeout 5m;
# ssl_ciphers HIGH:!aNULL:!MD5;
# ssl_prefer_server_ciphers on;
# location / {
# root html;
# index index.html index.htm;
# }
#}
#
server {
listen 8888;
server_name lhy.com;
access_log logs/lhy.access.log main;
location /{
#正则表达式匹配uri方式：在/usr/local/nginx/lhy下建立一个test1234.html 然后使用正则匹配
#location ~ test {
#重写语法：if return (条件 = ~ ~*)
#if ($remote_addr = 192.168.85.1) {
# return 401;
#}
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：
第二次访问，访问的是服务器B：
nginx+tomcat实现的 反向代理+负载均衡至此实现。
原文地址：https://www.cnblogs.com/lihaoyang/p/10454898.html
时间： 2024-10-05 04:58:35