docker +haproxy+python web

1、python web 端的dockerfile

FROM python:2.7
WORKDIR /code
ADD . /code
EXPOSE 80
CMD python index.py

2、index.py 网站首页py文件

#!/usr/bin/python

import sys
import BaseHTTPServer
from SimpleHTTPServer import SimpleHTTPRequestHandler
import socket
import fcntl
import struct
import pickle
from datetime import datetime
from collections import OrderedDict

class HandlerClass(SimpleHTTPRequestHandler):
    def get_ip_address(self,ifname):
        s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
        return socket.inet_ntoa(fcntl.ioctl(
            s.fileno(),
            0x8915,  # SIOCGIFADDR
            struct.pack('256s', ifname[:15])
        )[20:24])
    def log_message(self, format, *args):
        if len(args) < 3 or "200" not in args[1]:
            return
        try:
            request = pickle.load(open("pickle_data.txt","r"))
        except:
            request=OrderedDict()
        time_now = datetime.now()
        ts = time_now.strftime('%Y-%m-%d %H:%M:%S')
        server = self.get_ip_address('eth0')
        host=self.address_string()
        addr_pair = (host,server)
        if addr_pair not in request:
            request[addr_pair]=[1,ts]
        else:
            num = request[addr_pair][0]+1
            del request[addr_pair]
            request[addr_pair]=[num,ts]
        file=open("index.html", "w")
        file.write("<!DOCTYPE html> <html> <body><center><h1><font color="blue" face="Georgia, Arial" size=8><em>HA</em></font> Webpage Visit Results</h1></center>");
        for pair in request:
            if pair[0] == host:
                guest = "LOCAL: "+pair[0]
            else:
                guest = pair[0]
            if (time_now-datetime.strptime(request[pair][1],'%Y-%m-%d %H:%M:%S')).seconds < 3:
                file.write("<p style="font-size:150%" >#"+ str(request[pair][1]) +": <font color="red">"+str(request[pair][0])+ "</font> requests " + "from &lt<font color="blue">"+guest+"</font>&gt to WebServer &lt<font color="blue">"+pair[1]+"</font>&gt</p>")
            else:
                file.write("<p style="font-size:150%" >#"+ str(request[pair][1]) +": <font color="maroon">"+str(request[pair][0])+ "</font> requests " + "from &lt<font color="navy">"+guest+"</font>&gt to WebServer &lt<font color="navy">"+pair[1]+"</font>&gt</p>")
        file.write("</body> </html>");
        file.close()
        pickle.dump(request,open("pickle_data.txt","w"))

if __name__ == '__main__':
    try:
        ServerClass  = BaseHTTPServer.HTTPServer
        Protocol     = "HTTP/1.0"
        addr = len(sys.argv) < 2 and "0.0.0.0" or sys.argv[1]
        port = len(sys.argv) < 3 and 80 or int(sys.argv[2])
        HandlerClass.protocol_version = Protocol
        httpd = ServerClass((addr, port), HandlerClass)
        sa = httpd.socket.getsockname()
        print "Serving HTTP on", sa[0], "port", sa[1], "..."
        httpd.serve_forever()
    except:
        exit()

3、index.html 空文件

4、haproxy.cfg 配置文件

global
  log 127.0.0.1 local0
  log 127.0.0.1 local1 notice

defaults
  log global
  mode http
  option httplog
  option dontlognull
  timeout connect 5000ms
  timeout client 50000ms
  timeout server 50000ms

listen stats
    bind 0.0.0.0:70
    stats enable
    stats uri /

frontend balancer
    bind 0.0.0.0:80
    mode http
    default_backend web_backends

backend web_backends
    mode http
    option forwardfor
    balance roundrobin
    server weba weba:80 check
    server webb webb:80 check
    server webc webc:80 check
    option httpchk GET /
    http-check expect status 200

5、docker-compose.yml 文件

weba:
  build: ./web
  expose:
    - 80

webb:
  build: ./web
  expose:
    - 80

webc:
  build: ./web
  expose:
    - 80

haproxy:
  image: haproxy
  volumes:
    - /opt/compose-haproxy-web/haproxy:/haproxy-override
    - /opt/compose-haproxy-web/haproxy:/usr/loacl/etc/haproxy
  links:
    - weba
    - webb
    - webc
  ports:
    - "81:80"
    - "71:70"
  expose:
    - "80"
    - "70"

路径结构

在compose-haproyx-web 目录下执行docker-compose up 来启动项目