python3 haproxy配置文件操作练习
哈哈 老规矩 先来一个NLP第六条：咳咳！
六，重复旧的做法，只会得到旧的结果
做法有不同，结果才会有不同。
如果，你的事没有结果，改变你的做法。任何新的做法，都比旧的多一份成功的机会。
想明天比昨天更好，必须用与昨天不同的做法。
改变自己，别人才有可能改变。
世界上本来便是每样事物都在不停地改变中，不肯改变的便面临淘汰或失败的威胁。
因此只有不断地改变做法，才能保持与其他事物关系有理想状态。
“做法”是规条，目的是取得价值，实现信念。维持最有效果地规条，就是灵活地不断修正做法，才能保证取得价值，实现信念。
改变是所有进步的起点。
然后是今天的学习内容。。。也没干啥，最近有点飘还是沉不下心来，把以前的一个文件操作的作业给做了haproxy是啥，不知道。。。 然后还有个ATM机的作业，动不了手，得慢慢琢磨。草稿如下：
这是配置文件：
1 global 2 log 127.0.0.1 local2 3 daemon 4 maxconn 256 5 log 127.0.0.1 local2 info 6 defaults 7 log global 8 mode http 9 timeout connect 5000ms 10 timeout client 50000ms 11 timeout server 50000ms 12 option dontlognull 13 14 listen stats :8888 15 stats enable 16 stats uri /admin 17 stats auth admin:1234 18 19 frontend oldboy.org 20 bind 0.0.0.0:80 21 option httplog 22 option httpclose 23 option forwardfor 24 log global 25 acl www hdr_reg(host) -i www.oldboy.org 26 use_backend www.oldboy.org if www 27 28 backend www.oldboy.org 29 server 100.1.7.9 100.1.7.9 weight 20 maxconn 3000 30 31 backend www.baidu.com 32 server 100.1.7.8 100.1.7.8 weight 20 maxconn 3000 33 34 backend www.4399.com 35 server 100.1.7.8 100.1.7.8 weight 20 maxconn 3000 36 37 backend www.7k7k.com 38 server 100.1.7.8 100.1.7.8 weight 29 maxconn 3080
这是草稿代码：
1 #!usr/bin/env/ python 2 # -*- coding:utf-8 -*- 3 # Author: XiaoFeng 4 5 6 def print_list(): 7 for index, i in enumerate(list1): 8 print(index, i) 9 10 11 def search(): # 查 12 website = input("请输入您要查询的内容： (就输这个：www.oldboy.org)") 13 find_str = "backend {}".format(website) # format() 与{}配合使用 14 with open("config_test", "r", encoding="utf-8") as f: 15 for line in f: 16 if find_str == line.strip(): # strip()用来去除左右两端的字符，空格换行啥的 17 line = next(f) 18 while line.strip().startswith("server"): # startswith() 判断以啥开头 19 try: 20 print(line) 21 line = next(f) 22 except StopIteration: 23 break 24 break 25 else: 26 print("没得你要滴东西") 27 28 29 def add(): # eval() 用来把字符转换成字典 30 arg = eval(input("请输入您要写入的内容：" 31 "例如：{'backend': 'www.4399.com'," 32 "'record': {'server': '100.1.7.8'," 33 "'weight': 20," 34 "'maxconn': 3000}}").strip()) 35 backend = "backend {}".format(arg["backend"]) 36 record = arg["record"] 37 record_context = "server {0} {0} weight {1} maxconn {2}" 38 .format(record["server"], record["weight"], record["maxconn"]) 39 add_flag = True 40 with open("config_test", "r+", encoding="utf-8") as f: 41 for line in f: 42 if line.strip() == backend: 43 print("此网址已存在！") 44 add_flag = False 45 if add_flag: # 经过循环 文件指针已经在最下方了 46 f.write(" {}".format(backend)) 47 f.write(" {}".format(record_context)) 48 49 50 def update(): 51 arg = eval(input("请输入您要写入的内容：" 52 "例如：{'backend': 'www.7k7k.com'," 53 "'record': {'server': '100.1.7.8'," 54 "'weight': 20," 55 "'maxconn': 3000}}").strip()) 56 backend = "backend {}".format(arg["backend"]) 57 record = arg["record"] 58 record_context = "server {0} {0} weight {1} maxconn {2}" 59 .format(record["server"], record["weight"], record["maxconn"]) 60 61 update_flag = False 62 reupdate_flag = False 63 with open("config_test", "r", encoding="utf-8") as f, 64 open("config_test_bak", "w", encoding="utf-8") as f1: 65 for line in f: 66 if line.strip() == backend: 67 update_flag = True 68 continue 69 if line.strip().startswith("backend") and backend != line.strip(): 70 update_flag = False 71 if not update_flag: 72 f1.write(line) 73 if update_flag and not reupdate_flag: 74 f1.write(backend) 75 f1.write(" {}".format(record_context)) 76 reupdate_flag = True 77 with open("config_test", "w", encoding="utf-8") as f, 78 open("config_test_bak", "r", encoding="utf-8") as f1: 79 for line in f1: 80 f.write(line) 81 82 83 def delete(): # 删 84 arg = input("请输入您要删除的内容：" 85 "例如：www.4399.com").strip() 86 delet_flage = False 87 with open("config_test", "r", encoding="utf-8") as f, 88 open("config_test_bak", "w", encoding="utf-8") as f1: 89 for line in f: 90 if "backend {}".format(arg) == line.strip(): 91 print(line) 92 delet_flage = True 93 continue 94 if line.strip().startswith("backend") and "backend {}".format(arg) != line.strip(): 95 delet_flage = False 96 if not delet_flage: 97 f1.write(line) 98 with open("config_test", "w", encoding="utf-8") as f, 99 open("config_test_bak", "r", encoding="utf-8") as f1: 100 for line in f1: 101 f.write(line) 102 103 104 def ifcontinue(): 105 key = input("