python检测服务器是否正常

经常使用python检测服务器是否能ping通, 程序是否正常运行(检测对应的端口是否正常)

以前使用shell脚本的写法如下:

代码如下:

pingret=$( ping www.baidu.com -c 2 | grep “icmp_” ); if [ -z $pingret ]; then echo “ping fail”; else echo “ping ok”; fi

或者

代码如下:

ping -c 2 www.baidu.com|grep “icmp_” && echo ‘ping ok’ || echo ‘ping fail’

代码示例:

代码如下:

#!/usr/bin/python# encoding=utf-8# filename: net_is_normal.pyimport osimport socketimport subprocess

#判断网络是否正常server=’www.baidu.com’#检测服务器是否能ping通,在程序运行时,会在标准输出中显示命令的运行信息def pingserver(server): result=os.system(‘ping ‘+server+’ -c 2′) if result: print ‘服务器%s ping fail’ % server else: print ‘服务器%s ping ok’ % server print result

#把程序输出定位到/dev/null,否则会在程序运行时会在标准输出中显示命令的运行信息 def pingservercall(server): fnull = open(os.devnull, ‘w’) result = subprocess.call(‘ping ‘+server+’ -c 2′, shell = true, stdout = fnull, stderr = fnull) if result: print ‘服务器%s ping fail’ % server else: print ‘服务器%s ping ok’ % server fnull.close()#可用于检测程序是否正常,如检测redis是否正常,即检测redis的6379端口是否正常#检测ssh是否正常,即检测ssh的22端口是否正常def check_aliveness(ip, port): sk = socket.socket(socket.af_inet, socket.sock_stream) sk.settimeout(1) try: sk.connect((ip,port)) print ‘server %s %d service is ok!’ %(ip,port) return true except exception: print ‘server %s %d service is not ok!’ %(ip,port) return false finally: sk.close() return falseif __name__==’__main__’: pingservercall(server) pingserver(server) check_aliveness(‘192.168.230.128’, 6379)