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How can I ensure cron job runs only on one host at any time

原文 2015-07-27 05:11:48 3 1 python/ database/ cron/ crontab/ distributed

I have a django management command run as a cron job and it is set on multiple hosts to run at the same time. What is the best way to ensure that cron job runs on only one host at any time? One approach is to use db locks as the cron job updates a MySQL db but I am sure there are better(django or pythonic) approaches to achieve what I am looking for

1 answers

简单方法：-在需要的时间（例如两分钟）之前启动cron-强制同步时间（使用ntp或ntpdate）（可选的偏执模式）-等待预期时间，运行作业

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Related Question How to ensure only one thread runs at a time, the most recent data? How else can I troubleshoot this cron job? Ensure a variable is only at one state at any given time Python tkinter: How can I ensure only ONE child window is created onclick and not a new window every time the button is clicked? How can I make a cron job that would only execute if my gpio pin is HIGH? How can I ensure a Celery task runs with the right settings? How to ensure that a block of code can be executed only by one request at a time in Python? Checkbox validation: how do i ensure user can only tick one box only? How can I ensure either one specific task, or the rest, can run at a time with asyncio? How can I check whether the script started with cron job is completed?

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How can I ensure cron job runs only on one host at any time

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solution1 -1 2015-07-27 05:24:27

solution1
-1 2015-07-27 05:24:27