haproxy配置文件

haproxy配置文件

 

思路：读一行、写一行

global
        log 127.0.0.1 local2
        daemon
        maxconn 256
        log 127.0.0.1 local2 info
defaults
        log global
        mode http
        timeout connect 5000ms
        timeout client 50000ms
        timeout server 50000ms
        option  dontlognull

listen stats :8888
        stats enable
        stats uri       /admin
        stats auth      admin:1234

frontend oldboy.org
        bind 0.0.0.0:80
        option httplog
        option httpclose
        option  forwardfor
        log global
        acl www hdr_reg(host) -i www.oldboy.org
        use_backend www.oldboy.org if www

backend www.oldboy.org
        server 100.1.7.9 100.1.7.9 weight 20 maxconn 3000
        
backend buy.oldboy.org
        server 100.1.7.90 100.1.7.90 weight 20 maxconn 3000

?

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#!/usr/bin/env python # -*- coding:utf-8 -*-     def fetch(backend):     result = []     with open('ha.conf', 'r') as f:         flag = False         for line in f:             if line.strip().startswith('backend') and line.strip() == "backend " + backend:                 flag = True                 continue             if flag and line.strip().startswith('backend'):                 break             if flag and line.strip():                 result.append(line.strip())       return result     def add(backend, record):     result = fetch(backend)     if not result:         # 无backend，无record         pass     else:         # 有backend         if record in result:             # 记录record             pass         else:             result.append(record)             with open('ha.conf', 'r') as old, open('new.conf', 'w') as new:                 continue_flag = False                 for line in old:                       if line.strip().startswith('backend') and line.strip() == "backend " + backend:                         continue_flag = True                         new.write(line)                         for temp in result:                             new.write(" "*8 + temp + "\n")                         continue                       if continue_flag and line.strip().startswith('backend'):                         continue_flag = False                       if continue_flag:                         pass                     else:                         new.write(line)     def add2(backend, record):     with open('ha.conf', 'r') as old, open('new.conf', 'w') as new:         in_backend = False         has_backend = False         has_record = False         for line in old:             if line.strip().startswith('backend') and line.strip() == "backend " + backend:                 has_backend = True                 in_backend = True                 new.write(line)                 continue               if in_backend and line.strip().startswith('backend'):                 if not has_record:                     new.write(" "*8 + record + '\n')                 new.write(line)                 in_backend = False                 continue               if in_backend and line.strip() == record:                 has_record = True                 new.write(line)                 continue               if line.strip():                 new.write(line)           if not has_backend:             # 写backend，写record             new.write('backend '+ backend + '\n')             new.write(' '*8 + record + '\n')     # ret = fetch("www.oldboy.org") # print(ret)   # add('www.oldboy.org', "server 100.1.7.10 100.1.7.10 weight 20 maxconn 3000") # add2('www.oldboy.org', "server 100.1.7.11 100.1.7.11 weight 20 maxconn 3000")