作业:
对haproxy配置文件进行操作
要求:
对haproxy配置文件中backend下的server实现增删改查的功能
一、这个程序有二个版本
1、 python2.7版本见haproxy_python27.py
2、 python3.4版本见haproxy_python34.py
二、具体实现了如下功能:
1、输入1,进入backend菜单,查询server信息
2、输入2,进入backend菜单,添加server条目
3、输入3,进入backend菜单,选择server条目,进入修改环节
4、输入4,进入backend菜单,选择server条目,进入删除环节
5、输入5,退出程序
三、haproxy配置文件如下:
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 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 server 100.1.7.10 100.1.7.10 weight 10 maxconn 2000 frontend mysql bind *:3306 mode tcp log global default_backend mysqlserver backend mysqlserver server mysql1 10.1.1.110:3306 weight 20 maxconn 300 server mysql2 10.1.1.120:3306 weight 10 maxconn 200
四、流程图如下:
五、python2.7代码:
#!/usr/bin/python27 #_*_ coding=utf-8 _*_ ''' Created on 2016年1月17日 @author: 王凯 ''' import os,sys,re,time from collections import defaultdict,OrderedDict ######################raw_input输入字符类型转化函数####################### def input_handle(s): if str.isdigit(s): ###对输入是否是数字进行判断### s = int(s) ###如果输出的是个数字,则转化为整数类型### return s ###返回输入字符### #####################名称或变量名输入判断函数############################# def name_decide(): (name,name_flag) = ('',True) ###初始化返回的名称和判断标志位### while name_flag: name_input = raw_input('\033[32m请输入新服务名:(退出输入q)\033[0m') if len(name_input) == 0: ###如果输入为空则直接下一次循环### continue elif name_input == 'q': ###输入q,退出本次输入### name_flag = False elif re.match('[0-9a-zA-Z\_]+',name_input): ###匹配输入是否以字符、数字或下划线开头### name = name_input name_flag = False ###输入成功后退出循环### else: print('\033[31m名称输入错误,请重新输入!!!\033[0m') return(name) ###返回输入的结果### #####################IP地址及端口输入判断函数############################# def ipaddress_decide(): (address,address_flag) = ('',True) ###初始化返回的IP地址和判断标志位### while address_flag: address_input = raw_input('\033[32m请输入新地址(IP哦):(退出输入q)\033[0m') if len(address_input) == 0: ###如果输入为空则直接下一次循环### continue elif address_input == 'q': ###输入q,退出本次输入### address_flag = False ##################匹配输入是否是ip:port的格式###################### elif re.match('(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3}(\:\d{1,5})?$',address_input): address = address_input address_flag = False ###输入成功后退出循环### else: print('\033[31m地址输入错误,请重新输入!!!\033[0m') return(address) ###返回输入的结果### ####################数字输入判断函数###################################### def number_decide(name): (number,number_flag) = ('',True) ###初始化返回的数字和判断标志位### while number_flag: number_input = raw_input('\033[32m请输入 %s (数字哦):(退出输入q)\033[0m' % name) if len(number_input) == 0: ###如果输入为空则直接下一次循环### continue elif number_input == 'q': ###输入q,退出本次输入### number_flag = False else: try: int(number_input) ###匹配输入是否是数字### except: print('\033[31m %s 输入错误,请重新输入!!!\033[0m' % name) else: number = number_input number_flag = False ###输入成功后退出循环### return(number) ###返回输入的结果### #############################backend输入判断函数########################## def backend_input_if(input_index,input_dict): (input_name,input_flag) = ('',True) ###初始化返回的名称和判断标志位### ###############如果输入非空,对输入进行判断并转化类型################# if len(input_index) != 0: input_index = input_handle(input_index) if input_index == 'b': ###如果输入为b,则退出程序### input_flag = False elif input_index in input_dict.keys(): ###如果输入为数字编号,则从字典中获取具体backend名称### input_name = input_dict[input_index] elif input_index in input_dict.values(): ###如果输入为backend名称,则直接获取### input_name = input_index else: input_name = '' ###输入其他字符,赋值变量为空### return(input_name,input_flag) ###返回输入的结果和循环标志位### ###########################backend列表展示函数############################ def backend_read(file): backend_list = [] ###初始化backend的列表### show_dict = {} ###初始化要返回的显示字典### backend_name_dict = defaultdict(list) ###定义一个value为列表的字典,用来存放server### server_flag = False ###初始化server判断标志位### with open(file,'r') as ha: ###打开haproxy配置文件### for line in ha: server_dict = OrderedDict() ###定义一个有序字典### line = line.strip('\n') if re.match('backend',line): ###匹配配置文件以backend开头的行### backend_name = re.split('\s+',line)[1] backend_list.append(backend_name) ###将配置到的backend的名称插入到列表### server_flag = True ###赋值标志位为真,用来与server关联### elif server_flag and re.match('\s+server',line): ###匹配配置文件以server开头的行### server_info = re.split('\s+',line) ###对server进行分隔### server_dict['name'] = server_info[2] ###对server的具体信息进行字典赋值### server_dict['address'] = server_info[3] server_dict['weight'] = server_info[5] server_dict['maxconn'] = server_info[7] backend_name_dict[backend_name].append(server_dict) ###将server字典与backend的名称进行关联### else: server_flag = False ###当server没匹配到,赋值标志位为假,结束关联### for k,v in enumerate(backend_list,1): show_dict[k] = v ###对backend名称进行新字典赋值,方便查询和展示### print('%d . %s' % (k,v)) ###输出backend列表### return(show_dict,backend_name_dict) ###返回显示的字典和backend-server字典### ########################显示backend后端服务器函数############################# def backend_server_show(backend_show_value,server_show_dict): ############对backend名称进行遍历并加上数字编号########################### print('\n================================================================') print('后端服务器(%s)信息如下 : ' % backend_show_value) print('%-5s %-20s %-20s %-20s %-20s' % ('id','name','address','weight','maxconn')) server_list = server_show_dict[backend_show_value] for k,v in enumerate(server_list,1): ###用enumerate进行server展示### print '%-5s' % k + ' ', for kk,vv in v.items(): print '%-20s' % vv + ' ', print print('\n================================================================') ########################backend后端服务操作并回写配置文件函数################# def backend_server_handle(file,handle_dict): newfile = '%s.new' % file ###定义回写的新文件### server_flag = False with open(file,'r') as read_file,open(newfile,'w') as write_file: ###同时打开二文件,一个读,一个写### for line in read_file: if re.match('backend',line): ###匹配到backend行时进行server信息插入### write_file.write(line) backend_name = re.split('\s+',line)[1] for server_dict in handle_dict[backend_name]: ###对backend-server字典进行遍历### server_line = '\tserver {name} {address} weight {weight} maxconn {maxconn}\n' write_file.write(server_line.format(**server_dict)) ###将指定的backend下的server条目插入文件### server_flag = True ###指定标志位为真,方便server判断### elif server_flag and re.match('\s+server',line): ###匹配server开头的行,跳过不做任何操作### pass else: write_file.write(line) ###其他的行,直接插入新文件### server_flag = False print('\033[33m server更新成功\033[0m') os.system('mv %s %s.bak' % (file,file)) ###对源配置文件进行备份### os.system('mv %s %s' % (newfile,file)) ###对新生成的配置文件进行改名### ##################################主程序开始################################## if __name__ == '__main__': flag = True haproxy_file = 'haproxy.cfg' ###指定haproxy配置文件### backend_name = '' haproxy_name_show_dict = {} ###初始化backend显示字典### haproxy_server_show_dict = {} ###初始化server显示字典### while flag: os.system('clear') ###清屏### print('\n================================================================') print('\033[33m 欢迎访问haproxy配置文件管理平台:\033[0m') print('\nbackend列表信息如下 : ') (haproxy_name_show_dict,haproxy_server_show_dict) = backend_read(haproxy_file) print('\n================================================================') print ''' \033[31m 1. 查询后端服务\033[0m \033[32m 2. 添加后端服务\033[0m \033[33m 3. 修改后端服务\033[0m \033[35m 4. 删除后端服务\033[0m \033[36m 5. 退出\033[0m ''' print('\n================================================================') select_num = raw_input('\033[33m请选择操作条目:\033[0m') #######################1. 查询后端服务################################ if select_num == '1': query_flag = True ###初始化查询循环标志### while query_flag: backend_index = raw_input('\033[32;1m请输入查询的backend编号或名称(返回上层菜单,请输入b):\033[0m') ##############################对输入值进行判断################ (backend_name,query_flag) = backend_input_if(backend_index,haproxy_name_show_dict) if backend_name: ###显示对应backend下的server列表### backend_server_show(backend_name,haproxy_server_show_dict) #######################2. 添加后端服务################################ if select_num == '2': add_flag = True ###初始化添加循环标志### while add_flag: backend_index = raw_input('\033[32;1m请输入添加的backend的编号或名称(返回上层菜单,请输入b):\033[0m') ##############################对输入值进行判断################ (backend_name,add_flag) = backend_input_if(backend_index,haproxy_name_show_dict) if backend_name: ###显示对应backend下的server列表### backend_server_show(backend_name,haproxy_server_show_dict) add_server_dict = OrderedDict() print('\033[34;1m请依次输入后端服务信息(name,address,weight,maxconn):\033[0m') add_server_dict['name'] = name_decide() ###对输入的name有效性进行判断### add_server_dict['address'] = ipaddress_decide() ###对输入的IP有效性进行判断### add_server_dict['weight'] = number_decide('权重值') ###对输入的权重有效性进行判断### add_server_dict['maxconn'] = number_decide('最大连接数') ###对输入的连接数有效性进行判断### print(add_server_dict['name'],add_server_dict['address'],add_server_dict['weight'],add_server_dict['maxconn']) #############对输入的四个服务信息是否成功判断############# if add_server_dict['name'] and add_server_dict['address'] and add_server_dict['weight'] and add_server_dict['maxconn']: add_commit = raw_input('请确认是否添加此条目(y | n):') if add_commit == 'y': ###确认添加服务条目,并回写配置文件### haproxy_server_show_dict[backend_name].append(add_server_dict) backend_server_handle(haproxy_file,haproxy_server_show_dict) else: add_flag = False ###否则退出本次循环### else: print('\033[31m server输入信息有误,请重新输入!!!\033[0m') #######################3. 修改后端服务################################# if select_num == '3': backend_modify_flag = True ###初始化修改循环标志### while backend_modify_flag: backend_index = raw_input('\033[32;1m请输入修改的backend的编号或名称(返回上层菜单,请输入b):\033[0m') ##############################对输入值进行判断################ (backend_name,backend_modify_flag) = backend_input_if(backend_index,haproxy_name_show_dict) if backend_name: ###显示对应backend下的server列表### backend_server_show(backend_name,haproxy_server_show_dict) server_modify_flag = True ###初始化server条目修改标志位### while server_modify_flag: server_index = raw_input('\033[32;1m请输入修改的server的编号(返回上层菜单,请输入b):\033[0m') if len(server_index) != 0: server_index = input_handle(server_index) if server_index == 'b': ###输入b,返还上一层### server_modify_flag = False #####################指定具体的server编号进行判断##### elif server_index >= 1 and server_index <= len(haproxy_server_show_dict[backend_name]): modify_server_dict = OrderedDict() print('\033[34;1m请依次输入后端服务信息(name,address,weight,maxconn):\033[0m') modify_server_dict['name'] = name_decide() ###对输入的四个信息有效性进行判断### modify_server_dict['address'] = ipaddress_decide() modify_server_dict['weight'] = number_decide('权重值') modify_server_dict['maxconn'] = number_decide('最大连接数') print(modify_server_dict['name'],modify_server_dict['address'],modify_server_dict['weight'],modify_server_dict['maxconn']) ######对输入的四个服务信息是否成功判断############# if modify_server_dict['name'] and modify_server_dict['address'] and modify_server_dict['weight'] and modify_server_dict['maxconn']: modify_commit = raw_input('请确认是否修改此条目(y | n):') if modify_commit == 'y': ###确认修改服务条目,并回写配置文件### haproxy_server_show_dict[backend_name][server_index - 1] = modify_server_dict backend_server_handle(haproxy_file,haproxy_server_show_dict) modify_server_flag = False else: ###否则退出本次循环### modify_server_flag = False else: print('\033[31m server输入信息有误,请重新输入!!!\033[0m') else: print('\033[31m server编号输入错误,请重新输入!!!\033[0m') #######################4. 删除后端服务################################ if select_num == '4': backend_delete_flag = True ###初始化删除循环标志### while backend_delete_flag: backend_index = raw_input('\033[32;1m请输入删除的backend下条目编号或名称(返回上层菜单,请输入b):\033[0m') ##############################对输入值进行判断################ (backend_name,backend_delete_flag) = backend_input_if(backend_index,haproxy_name_show_dict) if backend_name: ###显示对应backend下的server列表### backend_server_show(backend_name,haproxy_server_show_dict) server_delete_flag = True ###初始化server条目删除标志位### while server_delete_flag: server_index = raw_input('\033[32;1m请输入删除的server的编号(返回上层菜单,请输入b):\033[0m') if len(server_index) != 0: server_index = input_handle(server_index) if server_index == 'b': ###输入b,返还上一层### server_delete_flag = False #####################指定具体的server编号进行判断##### elif server_index >= 1 and server_index <= len(haproxy_server_show_dict[backend_name]): print(haproxy_server_show_dict[backend_name][server_index - 1]) delete_commit = raw_input('请确认是否删除此条目(y | n):') if delete_commit == 'y': ###确认删除服务条目,并回写配置文件### del haproxy_server_show_dict[backend_name][server_index - 1] backend_server_handle(haproxy_file,haproxy_server_show_dict) delete_server_flag = False else: ###否则退出本次循环### delete_server_flag = False else: print('\033[31m server编号输入错误,请重新输入!!!\033[0m') #######################5. 退出程序###################### if select_num == '5': sys.exit('\033[32m 退出程序,欢迎下次光临,谢谢\033[0m')
六、python3.4代码:
import time,os,datetime,sys,MySQLdb,logging logging.basicConfig(level=logging.DEBUG, format='%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s', datefmt='%Y %m %d %H:%M:%S', # filename=filename, filename='/home/logs/svncommit.log', filemode='a') g_DB_CONFIG={ 'host':'127.0.0.1', 'user':'root', 'passwd':'', 'db':'' } def GetCurPathInfo(): today_time=datetime.datetime.now() today_0_time = datetime.datetime(today_time.year, today_time.month, today_time.day) yestoday_time=datetime.datetime.now()-datetime.timedelta(days=0) yestoday_0_time = datetime.datetime(yestoday_time.year, yestoday_time.month, yestoday_time.day) todayUnix = int(time.mktime(today_0_time.timetuple())) yesterdayUnix = int(time.mktime(yestoday_0_time.timetuple())) logging.info('yestertoday : date %s, unix_time %s' %(yestoday_0_time,yesterdayUnix)) logging.info('today : date %s, unix_time %s' %(today_0_time,todayUnix)) CurPath='/home/svnroot' ChildrenList = os.listdir(CurPath) # logging.info(ChildrenList) appidList=[] index = 0 for name in ChildrenList: index = index + 1 if index%500==0: logging.info (index) if len(name) != 14: continue dbName = os.path.join(CurPath,name,'db') if not os.path.exists(dbName): logging.info('db is not exists, appId is '+name) continue # logging.info(dbName) appFileStats = os.stat(os.path.join(CurPath,name)) appModifyTime = appFileStats.st_mtime fileStats = os.stat(dbName) modifyTime = fileStats.st_mtime if modifyTime > yesterdayUnix : appidList.append(name) logging.info ('today create appid submit '+name) logging.info (appidList) logging.info ('len is :' +str(len(appidList))) yestoday_timeStr='%d-%02d-%02d' % (yestoday_time.year, yestoday_time.month,yestoday_time.day) # logging.info(yestoday_timeStr) values=[] svn_ip='10.124.156.225' for appid in appidList: values.append((appid,yestoday_timeStr,svn_ip)) # logging.info(values) # try: # conn=MySQLdb.connect(host=g_DB_CONFIG['host'],user=g_DB_CONFIG['user'],passwd=g_DB_CONFIG['passwd'],port=3306,db=g_DB_CONFIG['db']) # cur=conn.cursor() # cur.executemany('insert ignore into statistic_svncommit(appId,reportDate,svn_ip) values(%s,%s,%s)',values) # conn.commit() # cur.close() # conn.close() # except MySQLdb.Error,e: # logging.info( "Mysql Error %d: %s" % (e.args[0], e.args[1])) # raise e return if __name__ == '__main__': try: logging.info('-'*60 +'begin Statistic_Svncommit'+'-'*60) GetCurPathInfo() logging.info('-'*60+'end Statistic_Svncommit'+'-'*60) except: info = sys.exc_info() for file, lineno, function, text in traceback.extract_tb(info[2]): logging.error(text) else: logging.info('SUCCESS')
七、效果图:
1、 初始菜单直接显示backend列表,并列出选择菜单:
2、 输入1,选择查询菜单,并输入backend的名称或编号,均可,并展示对应名称下的server信息:
3、 输入b可以返回上层菜单,输入2进入添加server条目:
4、 输入server对应的name,address,weight,maxconn,并对有效性进行判断:
添加成功后查看结果:
注:
name以数字、字母、下划线开头(其中包含数字的原因是可以输入ip地址)
address可以是单独的ip地址,也可以是ip加端口的形式,例:192.168.100.3或192.168.100.3:8080
weight和maxconn必须输入数字,大小暂时没有限制
5、 输入b可以返回上层菜单,输入3进入修改server条目,并对www.oldboy.org下的sky条目进行修改:
同样对输入的server有效性进行判断,最后确认回写配置文件,查看修改结果:
6、 输入b可以返回上层菜单,输入4进入删除server条目,并对指定条目进行修改:
7、输入b可以返回上层菜单,输入5,即可退出程序。
八、针对python2.7和python3.4的代码区别:
1、print的使用。
2、python2.7下使用raw_input,python3.4下使用input。