一、这个是源配置文件：
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
原配置文件
二、目的：增删改查操作
1、查
输入：www.oldboy.org
获取当前backend下的所有记录
2、新建
输入：
arg = {
\'bakend\': \'www.oldboy.org\',
\'record\':{
\'server\': \'100.1.7.9\',
\'weight\': 20,
\'maxconn\': 30
}
}
3、删除
输入：
arg = {
\'bakend\': \'www.oldboy.org\',
\'record\':{
\'server\': \'100.1.7.9\',
\'weight\': 20,
\'maxconn\': 30
}
}
也就是需求
三、Demo实例
#!/usr/bin/env python
# -*- coding:utf-8 -*-
import json
import os
def fetch(backend):
backend_title = \'backend %s\' % backend
record_list = []
with open(\'ha\') as obj:
flag = False
for line in obj:
line = line.strip()
if line == backend_title:
flag = True
continue
if flag and line.startswith(\'backend\'):
flag = False
break
if flag and line:
record_list.append(line)
return record_list
def add(dict_info):
backend = dict_info.get(\'backend\')
record_list = fetch(backend)
backend_title = "backend %s" % backend
current_record = "server %s %s weight %d maxconn %d" % (dict_info[\'record\'][\'server\'], dict_info[\'record\'][\'server\'], dict_info[\'record\'][\'weight\'], dict_info[\'record\'][\'maxconn\'])
if not record_list:
record_list.append(backend_title)
record_list.append(current_record)
with open(\'ha\') as read_file, open(\'ha.new\', \'w\') as write_file:
flag = False
for line in read_file:
write_file.write(line)
for i in record_list:
if i.startswith(\'backend\'):
write_file.write(i+\'\n\')
else:
write_file.write("%s%s\n" % (8*" ", i))
else:
record_list.insert(0, backend_title)
if current_record not in record_list:
record_list.append(current_record)
with open(\'ha\') as read_file, open(\'ha.new\', \'w\') as write_file:
flag = False
has_write = False
for line in read_file:
line_strip = line.strip()
if line_strip == backend_title:
flag = True
continue
if flag and line_strip.startswith(\'backend\'):
flag = False
if not flag:
write_file.write(line)
else:
if not has_write:
for i in record_list:
if i.startswith(\'backend\'):
write_file.write(i+\'\n\')
else:
write_file.write("%s%s\n" % (8*" ", i))
has_write = True
os.rename(\'ha\',\'ha.bak\')
os.rename(\'ha.new\',\'ha\')
def remove(dict_info):
backend = dict_info.get(\'backend\')
record_list = fetch(backend)
backend_title = "backend %s" % backend
current_record = "server %s %s weight %d maxconn %d" % (dict_info[\'record\'][\'server\'], dict_info[\'record\'][\'server\'], dict_info[\'record\'][\'weight\'], dict_info[\'record\'][\'maxconn\'])
if not record_list:
return
else:
if current_record not in record_list:
return
else:
del record_list[record_list.index(current_record)]
if len(record_list) > 0:
record_list.insert(0, backend_title)
with open(\'ha\') as read_file, open(\'ha.new\', \'w\') as write_file:
flag = False
has_write = False
for line in read_file:
line_strip = line.strip()
if line_strip == backend_title:
flag = True
continue
if flag and line_strip.startswith(\'backend\'):
flag = False
if not flag:
write_file.write(line)
else:
if not has_write:
for i in record_list:
if i.startswith(\'backend\'):
write_file.write(i+\'\n\')
else:
write_file.write("%s%s\n" % (8*" ", i))
has_write = True
os.rename(\'ha\',\'ha.bak\')
os.rename(\'ha.new\',\'ha\')
if __name__ == \'__main__\':
"""
print \'1、获取；2、添加；3、删除\'
num = raw_input(\'请输入序号：\')
data = raw_input(\'请输入内容：\')
if num == \'1\':
fetch(data)
else:
dict_data = json.loads(data)
if num == \'2\':
add(dict_data)
elif num == \'3\':
remove(dict_data)
else:
pass
"""
#data = "www.oldboy.org"
#fetch(data)
#data = \'{"backend": "tettst.oldboy.org","record":{"server": "100.1.7.90","weight": 20,"maxconn": 30}}\'
#dict_data = json.loads(data)
#add(dict_data)
#remove(dict_data)
demo