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

配置文件

#!/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")