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python检测服务器是否正常

Jun 16, 2016 am 08:45 AM

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:

复制代码 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
复制代码 代码如下:

ping -c 2 www.baidu.com|grep "icmp_" && echo 'ping ok' || echo 'ping fail'

代码示例:

复制代码 代码如下:

#!/usr/bin/python
# encoding=utf-8
# Filename: net_is_normal.py
import os
import socket
import 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 False

if __name__=='__main__':
    pingServerCall(server)
    pingServer(server)
    check_aliveness('192.168.230.128', 6379)

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