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PYTHON学习第一模块 Haproxy配置操作
购物车模拟
需求：
- 根据用户输入输出对应的backend下的
- server信息可添加backend 和
- sever信息可删除backend 和sever信息
- 添加server信息时,信息与已有信息重复则不操作
说明：
- python版本为3.6
- 增删查的结果均在haproxy.conf内可以验证
haproxy.conf配置文件内容：
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 weight 20 maxconn 3000 backend www.qq.com server 100.1.7.10 weight 20 maxconn 3000 backend www.cnblog.com server 100.1.7.14 weight 20 maxconn 3000
代码：
# /usr/bin/env python
# -*- coding: utf-8 -*-
# AUTHOR:Fio
import os
import json
arg = {
‘backend‘: ‘www.yahoo.com‘,
‘record‘: {
‘ip‘: ‘100.1.7.13‘,
‘weight‘: ‘20‘,
‘maxconn‘: ‘3000‘
}
}
def select_info(url):
flag = False
with open(‘./haproxy.conf‘, ‘r‘) as conf:
for line in conf:
if line.strip().startswith("backend %s" % url):
flag = True
continue
if flag:
record_info = line.strip()
flag = False
print(record_info)
def insert_info(info):
server_info = eval(info)
url = server_info[‘backend‘]
ip = server_info[‘record‘][‘ip‘]
weight = server_info[‘record‘][‘weight‘]
maxconn = server_info[‘record‘][‘maxconn‘]
flag = False
with open(‘./haproxy.conf‘, ‘r‘) as conf1:
for line in conf1:
if line.strip().startswith(‘backend %s‘ % url):
print("配置已存在")
flag = False
break
else:
flag = True
continue
if flag:
with open(‘./haproxy.conf‘, ‘a‘) as conf2:
conf2.write(‘backend ‘ + url + ‘\n‘)
conf2.write(‘ server %s weight %s maxconn %s\n‘ % (ip, weight, maxconn))
print("配置%s插入成功" % url)
def delete_info(url):
flag = False
with open(‘./haproxy.conf‘, ‘r+‘) as conf1:
with open(‘./haproxy_tmp.conf‘, ‘w‘) as conf2:
for line1 in conf1:
if line1.strip().startswith(‘backend %s‘ % url):
conf2.write("")
flag = True
continue
elif flag and line1.strip().startswith(‘server‘):
conf2.write("")
flag = False
continue
else:
conf2.write(line1)
continue
os.remove(‘./haproxy.conf‘)
os.rename(‘./haproxy_tmp.conf‘, ‘./haproxy.conf‘)
print(‘backend %s内容已删除‘ % url)
if __name__ == "__main__":
print(‘‘‘
###############################
# 请选择操作方法：
# 1. 查询
# 2. 插入
# 3. 删除
###############################
‘‘‘)
order_num = input("选择的序号：")
if order_num == ‘1‘:
URL = input("请选择要查询的域名：")
select_info(URL)
elif order_num == ‘2‘:
INFO = input(‘‘‘请输入完整的配置,
示例格式({ ‘backend‘: ‘www.yahoo.com‘, ‘record‘: { ‘ip‘: ‘100.1.7.13‘, ‘weight‘: ‘20‘, ‘maxconn‘: ‘3000‘ }})
：‘‘‘)
insert_info(INFO)
elif order_num == ‘3‘:
URL = input("请输入要删除的域名配置：")
delete_info(URL)
else:
print("请输入正确的序号！")
PYTHON学习第一模块 Haproxy配置操作
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