最近又新上了一部分站點(diǎn)，隨著站點(diǎn)的增多，管理復(fù)雜性也上來(lái)了，俗話說(shuō)：人多了不好帶，我發(fā)現(xiàn)站點(diǎn)多了也不好管，因?yàn)檫@些站點(diǎn)里有重要的也有不重要的，重要核心的站點(diǎn)當(dāng)然就管理的多一些，像一些萬(wàn)年都不出一次問(wèn)題的，慢慢就被自己都淡忘了，冷不丁那天出個(gè)問(wèn)題，還的手忙腳亂的去緊急處理，所以規(guī)范的去管理這些站點(diǎn)是很有必要的，今天我們就做第一步，不管大站小站，先統(tǒng)一把監(jiān)控做起來(lái)，先不說(shuō)業(yè)務(wù)情況，最起碼那個(gè)站點(diǎn)不能訪問(wèn)了，要第一時(shí)間報(bào)出來(lái)，別等著業(yè)務(wù)方給你反饋，就顯得我們不夠?qū)I(yè)了，那接下來(lái)我們看看如果用python實(shí)現(xiàn)多網(wǎng)站的可用性監(jiān)控，腳本如下：
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#!/usr/bin/env python import pickle, os, sys, loggingfrom httplib import HTTPConnection, socketfrom smtplib import SMTP def email_alert(message, status): server = SMTP('smtp.163.com:25') server.starttls() server.login('xxxxx', 'xxxx') server.sendmail(fromaddr, toaddrs, 'Subject: %s\r\n%s' % (status, message)) server.quit() def get_site_status(url): response = get_response(url) try: if getattr(response, 'status') == 200: return 'up' except AttributeError: pass return 'down' def get_response(url): try: conn = HTTPConnection(url) conn.request('HEAD', '/') return conn.getresponse() except socket.error: return None except: logging.error('Bad URL:', url) exit(1) def get_headers(url): response = get_response(url) try: return getattr(response, 'getheaders')() except AttributeError: return 'Headers unavailable' def compare_site_status(prev_results): def is_status_changed(url): status = get_site_status(url) friendly_status = '%s is %s' % (url, status) print friendly_status if urlin prev_resultsand prev_results[url] != status: logging.warning(status) email_alert(str(get_headers(url)), friendly_status) prev_results[url] = status return is_status_changed def is_internet_reachable(): if get_site_status('www.baidu.com') == 'down' and get_site_status('www.sohu.com') == 'down': return False return True def load_old_results(file_path): pickledata = {} if os.path.isfile(file_path): picklefile = open(file_path, 'rb') pickledata = pickle.load(picklefile) picklefile.close() return pickledata def store_results(file_path, data): output = open(file_path, 'wb') pickle.dump(data, output) output.close() def main(urls): logging.basicConfig(level=logging.WARNING, filename='checksites.log', format='%(asctime)s %(levelname)s: %(message)s', datefmt='%Y-%m-%d %H:%M:%S') pickle_file = 'data.pkl' pickledata = load_old_results(pickle_file) print pickledata if is_internet_reachable(): status_checker = compare_site_status(pickledata) map(status_checker, urls) else: logging.error('Either the world ended or we are not connected to the net.') store_results(pickle_file, pickledata) if __name__ == '__main__': main(sys.argv[1:]) |
腳本核心點(diǎn)解釋?zhuān)?/p>
1、getattr（）是python的內(nèi)置函數(shù)，接收一個(gè)對(duì)象，可以根據(jù)對(duì)象屬性返回對(duì)象的值。
2、compare_site_status（）函數(shù)是返回的是一個(gè)內(nèi)部定義的函數(shù)。
3、map()，需要2個(gè)參數(shù)，一個(gè)是函數(shù)，一個(gè)是序列，功能就是將序列中的每個(gè)元素應(yīng)用函數(shù)方法。
