配置文件模板：
defaults
log global
mode http
option httpclose
option dontlognull
option abortonclose
option redispatch
retries 3
maxconn 20480
balance roundrobin
timeout connect 15000
timeout client 15000
timeout server 15000
listen admin_stat
bind *:2008
mode http
option httplog
stats refresh 30s
stats uri /status
stats realm Haproxy\ Statistics
stats auth admin:123456
stats hide-version
stats admin if TRUE
listen image.eddy.com_LB
bind 10.25.16.11:8000
balance roundrobin
option forwardfor
option originalto
mode http
balance roundrobin
server pwepaypubc0101 pwepaypubc0101:8000 check inter 5000 weight 1
server pwepaypubc0102 pwepaypubc0102:8000 check inter 5000 weight 1
listen payment.eddy.com:8080_HA
bind 10.25.16.11:8080
mode tcp
server pwepaypubc0101 pwepaypubc0101:8080 check inter 5000 weight 1
server pwepaypubc0102 pwepaypubc0102:8080 check inter 5000 weight 1 backup
1.查询配置文件
#!/usr/bin/env python
# encoding: utf-8
import json
import re
import linecache
import time
import shutil
#定义listen行号列表
listen_line = []
#定义文件行号列表
line = []
#定义文件内容列表
line_content = []
#定义listen行号与listen那一行内容字典
listen_dic = {}
def query_cfg(key):
#打开文件
with open('haproxy.cfg','r') as obj:
#循环文件行号与行内容
for (num,value) in enumerate(obj):
#添加行号列表
line.append(num)
line_content.append(value)
#匹配以listen开头的行
if re.match('(listen.*?)',value,re.S):
#添加listen的行号
listen_line.append(num)
#让行内容之间的空格用‘_’替换
value = str(value).replace(' ','_')
#添加listen行号和所在行号内容
listen_dic.setdefault(num,value)
#遍历listen行号与内容的字典
for k,v in listen_dic.items():
#匹配以listen开头中间任意字符以关键字结尾的
if re.match('(listen.*?%s)' %(key),v,re.S):
#定义关键字所在listen行号
key_line = listen_line.index(k)
#判断关键字listen行号是否是最后一个listen行号
if key_line+1 == len(listen_line):
#打印listen关键字行号到最后一行的内容
for i in range(listen_line[key_line],line[-1]+2):
linecache.updatecache('haproxy.cfg')
print linecache.getline('haproxy.cfg',i),
else:
#判断关键listen行号不是最后一个listen就打印两个listen行号之间的内容
for i in range(listen_line[key_line],listen_line[key_line+1]):
linecache.updatecache('haproxy.cfg')
print linecache.getline('haproxy.cfg',i),
query_cfg('payment.eddy.com:8080_HA')
Connected to pydev debugger (build 135.1057)
listen payment.eddy.com:8080_HA
bind 10.25.16.11:8080
mode tcp
server pwepaypubc0101 pwepaypubc0101:8080 check inter 5000 weight 1
server pwepaypubc0102 pwepaypubc0102:8080 check inter 5000 weight 1 backup
#2.为配置文件添加节点
def add_cfg():
read = raw_input("please input listen:")
result = exist_cfg(read)
if result:
print 'please choose another listen name'
else:
content = raw_input('please input listen content:')
#格式化输入内容
content_dict = json.loads(content)
listen_title = '\n' + 'listen' + ' ' + content_dict['listen']
record = content_dict['record']
listen_bind = '\n' + ' ' + 'bind' + ' ' + record['bind']
listen_mode = '\n' + ' ' + 'mode' + ' ' + record['mode']
result1 = exist_cfg(content_dict['listen'])
if result1:
print 'please choose another listen name'
else:
#备份原配置文件
shutil.copyfile('haproxy.cfg','haproxy_version_%s.cfg' %time.strftime('%Y%m%d%H%M'))
with open('haproxy.cfg','a') as obj:
obj.writelines(listen_title)
obj.writelines(listen_bind)
obj.writelines(listen_mode)
obj.writelines('\n server %s check inter %s weight %s maxconn %s \n' %(record['server'],record['check inter'],record['weight'],record['maxconn']))
print 'add successfull'
add_cfg()
Connected to pydev debugger (build 135.1057)
please input listen:abcd
listen is not exits
please input listen content:{"listen":"abcd","record":{"bind":"10.25.16.11:8002","mode":"http","server":"pwpaystoc0102 10.25.19.52:8002","check inter":"5000","weight":"1","maxconn":"1000"}}
listen is not exits
add successfull
配置文件添加以下内容
listen abcd
bind 10.25.16.11:8002
mode http
server pwpaystoc0102 10.25.19.52:8002 check inter 5000 weight 1 maxconn 1000
#3.为配置更新
def update_cfg1():
line_content = []
listen_list = []
line = []
with open('haproxy.cfg','r') as obj:
for (num,value) in enumerate(obj):
line_content.append(value)
line.append(num)
if re.match('(listen.*?)',value,re.S):
listen_list.append(num)
# content = '{"listen":"abcd","record":{"server":"pwpaystoc0102 10.25.19.52:8002","check inter":"5000","weight":"1","maxconn":"1000"}}'
content =raw_input('please update site:')
content_dict = json.loads(content)
listen_title = content_dict['listen']
record = content_dict['record']
input_content = ' server %s check inter %s weight %s maxconn %s \n' %(record['server'],record['check inter'],record['weight'],record['maxconn'])
for i in line_content:
if re.match('(listen.*?%s)' %(listen_title),i,re.S):
if line_content.index(i) == listen_list[-1]:
line_content.insert(line[-1]+1,input_content)
s = ''.join(line_content)
shutil.copyfile('haproxy.cfg','haproxy_version_%s.cfg' %time.strftime('%Y%m%d%H%M'))
with open('haproxy.cfg','w') as obj:
obj.write(s)
else:
current_listen_index = listen_list.index(line_content.index(i))
next_listen_index = current_listen_index + 1
line_content.insert(listen_list[next_listen_index]-1,input_content)
s = ''.join(line_content)
shutil.copyfile('haproxy.cfg','haproxy_version_%s.cfg' %time.strftime('%Y%m%d%H%M'))
with open('haproxy.cfg','w') as obj:
obj.write(s)
update_cfg1()
Connected to pydev debugger (build 135.1057)
please update site:{"listen":"abcd","record":{"server":"pwpaystoc0102 10.25.19.52:8002","check inter":"5000","weight":"1","maxconn":"1000"}}
配置文件更新如下
listen abcd
bind 10.25.16.11:8002
mode http
server pwpaystoc0102 10.25.19.52:8002 check inter 5000 weight 1 maxconn 1000
server pwpaystoc0102 10.25.19.52:8002 check inter 5000 weight 1 maxconn 1000
server pwpaystoc0102 10.25.19.52:8002 check inter 5000 weight 1 maxconn 1000
#4.删除配置文件的配置
def delete_cfg():
read = raw_input("please input listen:")
result = exist_cfg(read)
if result:
for k,v in listen_dic.items():
if re.match('(listen.*?%s)' %(read),v,re.S):
key_line = listen_line[listen_line.index(k)]
if key_line == listen_line[-1]:
print key_line
print line[-1]
else:
key_line1 = listen_line[listen_line.index(k)+1]-2
print key_line
print key_line1
read = raw_input("please input delete line number:")
del line_content[int(read)]
shutil.copyfile('haproxy.cfg','haproxy_version_%s.cfg' %time.strftime('%Y%m%d%H%M'))
with open('haproxy.cfg','w') as obj:
new_realserver = ''.join(line_content)
obj.write(new_realserver)
Connected to pydev debugger (build 135.1057)
please input listen:abcd
listen abcd
bind 10.25.16.11:8002
mode http
server pwpaystoc0102 10.25.19.52:8002 check inter 5000 weight 1 maxconn 1000
server pwpaystoc0102 10.25.19.52:8002 check inter 5000 weight 1 maxconn 1000
listen is exits
97
101
please input delete line number:101
配置文件如下：
listen abcd
bind 10.25.16.11:8002
mode http
server pwpaystoc0102 10.25.19.52:8002 check inter 5000 weight 1 maxconn 1000
注意：
1.以上输入内容必须为以下格式
{"listen":"fastdfs_group2_8002_external","record":{"bind":"10.25.16.11:8002","mode":"http","server":"pwpaystoc0102 10.25.19.52:8002","check inter":"5000","weight":"1","maxconn":"1000"}}
因为raw_input输入的内容都为字符串，需要json化
2.注意写入内容的空格与换行符
3.扩展1：你可以使用flask或django做成网页管理haproxy配置文件的方式；
4.扩展2：你可以使用while True的死循环方式把几个函数连接起来做成一个终端操作的小工具，以下代码是否可用，没有验证过，只是举例
# while True:
# print '''
# ===================================================
# 1.)select haproxy configuration
# 2.)add haproxy listen
# 3).update haproxy
# 4.)delete haproxy realserver
# ===================================================
# '''
# read = raw_input('please choose number:')
# if read == '1':
# site = raw_input('please input listen:')
# exist_cfg(site)
# elif read == '2':
# add_cfg()
# elif read == '3':
# update_cfg()
# elif read == '4':
# delete_cfg()
# elif read == 'q' or read == 'quit':
# break
