python监控nginx端口和进程状态

#!/usr/local/bin/python# coding:utf-8import psutilimport sysimport os # 获取主机名称def hostname():  sys = os.name  if sys == 'nt':    hostname = os.getenv('computername')    return hostname  elif sys == 'posix':    host = os.popen('echo $HOSTNAME')    try:      hostname = host.read()      return hostname    finally:      host.close()  else:    return 'Unkwon hostname' # 获取进程状态def processStatus(processName):  pids = psutil.pids()   #获取主机所有的PID  a = 1  for pid in pids:      #对所有PID进行循环    p = psutil.Process(pid)  #实例化进程对象    if p.name() == processName:   #判断实例进程名与输入的进程名是否一致（判断进程是否存活）      print (a)   #返回1，进程存活      a += 1  if a == 1:    print (0)         #返回0，进程逝去 # 获取进程PIDdef processPID(processName):  pids = psutil.pids()  for pid in pids:    p = psutil.Process(pid)    if p.name() == processName:      return pid      return True # 如果找到该进程则打印它的PID，返回true  else:    print('找不到进程'+processName)    return False # 没有找到该进程，返回false # 获取进程的端口号def processPort(pid):    p = psutil.Process(pid)    data=p.connections()    data_listen=[x for x in data if 'LISTEN' in x ]    # pid_port=[]    # for port in data_listen:    #   pid_port.append((port.laddr.port))    # return list(set(pid_port))    return list(data_listen[0][3])[1] hostname=hostname().strip()PID=processPID('nginx')port=processPort(PID) json_data = [{"name": hostname+'-nginx', "port": port,"host_ip":LOCAL_IP,"PID":PID}] AutoDiscoveryJson(json_data, object_id='HOST')