第四次实践作业

（一）使用Docker-compose实现Tomcat+Nginx负载均衡

1.nginx.conf

采用最简单的轮询方式

user  nginx;
worker_processes  1;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;


events {
    worker_connections  1024;
}


http {
    server {
                listen 80;
                location  / {
                        proxy_pass http://blance;
                }
        }
 
    upstream blance{
            server tomcat01:8080;
            server tomcat02:8080; 
	    server tomcat03:8080;
    }

    include       /etc/nginx/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  /var/log/nginx/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    keepalive_timeout  65;

    #gzip  on;

    include /etc/nginx/conf.d/*.conf;
}

第二种方法 ip hash方式

    upstream blance{
            ip_hash;
            server tomcat01:8080;
            server tomcat02:8080; 
	    server tomcat03:8080;
    }

2.index.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"  import="java.net.InetAddress"  
    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>(一)、Tomcat+Nginx负载均衡</title>
	</head>
	<body>
     	<%
         	InetAddress addr = InetAddress.getLocalHost();
                out.println("031702405");
         	out.println("主机地址："+addr.getHostAddress()+"<br/>");
         	out.println("主机名："+addr.getHostName()+"<br/>");
      	%>
	</body>
</html>