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:
pingret=$( ping www.baidu.com -c 2 | grep "icmp_" ); if [ -z $pingret ]; then echo "ping fail"; else echo "ping ok"; fi
或者
ping -c 2 www.baidu.com|grep "icmp_" && echo 'ping ok' || echo 'ping fail'
代码示例:
#!/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)