[网络协议]Python 远程监控多个Macos电脑时间是否同步

之前文章有提到过做一个定时长时间运行服务，这个服务就是实现远程获取电脑时间。

2种思路，

1） 远端Macos开一个TCP服务，做一个获取当前时间接口

tcp通信实现，在NPI电脑运行一个服务器，实现一个接口返回当前电脑时间，准备一台电脑一个客户端，多线程去触发所有NPI电脑获取时间 。因产线限制tcp通信，放弃

#中心控制Macos端：运行多个线程程去启动tcp
import datetime
import time
import csv
import threading
import socket

exitFlag = 0


class myThread(threading.Thread):
    def __init__(self, threadID, name, delay, hostname, portvalue):
        threading.Thread.__init__(self)
        self.threadID = threadID
        self.name = name
        self.delay = delay
        self.hostname = hostname
        self.port = portvalue

    def run(self):
        print("Start run")
        print_time(self.name, self.delay, 1, self.hostname, self.port)


def print_time(threadName, delay, counter, hostname, port):
    while counter:
        if exitFlag:
            threadName.exit()
        time.sleep(delay)
        s = socket.socket()
        s.connect((hostname, port))
        s.sendall("RTC".encode())
        remote = s.recv(1024)
        s.close()
        remote=remote.decode().rstrip()
        print(remote)
        print(" Get from "+hostname+", "+str(port)+" value is :"+remote)
        remoteTime.append(remote)
        counter -= 1


if __name__ == '__main__':
    threads = []
    thread1 = myThread(1, "Thread-1", 0.01, "127.0.0.1", 8500)
    thread2 = myThread(2, "Thread-2", 0.01, "127.0.0.1", 8501)
    threads.append(thread1)
    threads.append(thread2)
    headers = ['Local', 'remote1', 'remote2']
    localtime = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S.%f")
    remoteTime = [localtime]
    for td in threads:
        td.start()
    for td in threads:
        td.join()

    print("remote times :", remoteTime)
    with open('timeCheck.csv', 'a') as f:
        f_csv = csv.writer(f)
        f_csv.writerow(remoteTime)

    print(localtime)



#服务端
#!/user/bin/env python
# coding=utf-8
"""
@project : rtcproject
@author  : Lani.wang
#@file   : rpcservice.py
#@ide    : PyCharm
#@time   : 2022-02-16 14:24:12
"""
# coding: utf-8
# server

import socket
import time

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.bind(("127.0.0.1", 8500)) # 根据需要修改端口
sock.listen(1)  # 监听客户端连接
print("Start")
while True:
    conn, addr = sock.accept()  # 接收一个客户端连接
    print(conn.recv(1024))  # 从接收缓冲读消息 recv buffer
    timevalue=time.time()
    conn.sendall(str(timevalue).encode())  # 将响应发送到发送缓冲 send buffer
    conn.close() # 关闭连接...
    break

2）因为是局域网，设置免密登录，然后远程打印电脑时间?

?免密SSH，py运行一个脚本，脚本实现远程免密登录并运行远端脚本。远端脚本运行一个python来获取时间。 下面是远端放的py脚本，远程ssh不能直接执行，需要写一个shell脚本放在这个脚本目录。然后中心电脑也写一个shell脚本完成远程ssh登录并执行这个远程电脑shell脚本。

#远端电脑，timeCheck.csv手动创建
import datetime
import time
import csv
import os
import threading
import socket


if __name__ == '__main__':
    localtime = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S.%f")
    remoteTime = ["106",localtime,time.time()]
    print("remote times :", remoteTime)
    try:
       with open('timeCheck.csv', 'a') as f:
        f_csv = csv.writer(f)
        f_csv.writerow(remoteTime)
        print ("finish")
    except Exception as e:
        print(e)
    

    print(localtime)

#中控电脑
...

shell脚本：clientcmmd.command
#!/bin/bash
cd "$(dirname "$0")"
python timeCheckClient.py

中心控制端：

#!/bin/bash
echo  "Run ssh 107"
ssh gdlocal@10.100.73.107 "/Users/xxx/Documents/sshgettimeForNPI/clientcmmd.command"
exit
echo "Stop"

最后写个python, 运行个for循环去遍历所有需要远程获取时间的电脑。