在Ansible中守护可执行文件 [英] Daemonizing an executable in ansible

问题描述

我试图在ansible中创建一个任务，该任务执行shell命令以使用&在守护程序模式下运行可执行文件.类似于

I am trying to create a task in ansible which executes a shell command to run an executable in daemon mode using &. Something like following

-name: Start daemon
  shell: myexeprogram arg1 arg2 &

看到的是我是否保留&该任务将立即返回，并且该过程不会开始.如果我删除& ansible任务等待相当长的时间却没有返回.

What am seeing is if I keep & the task returns immediately and the process is not started . If I remove & ansible task waits for quite some time without returning.

通过ansible正确建议在守护程序模式下启动程序的方法.请注意，我不想将此作为服务运行，而是基于某些条件的临时后台进程.

Appreciate suggestion on proper way to start program in daemon mode through ansible. Pls note that I dont want to run this as a service but an adhoc background process based on certain conditions.

推荐答案

使用&"运行程序不会使程序成为守护程序，它仅在后台运行.要创建真正的守护程序"，您的程序应执行

Running program with '&' does not make program a daemon, it just runs in background. To make a "true daemon" your program should do steps described here.

如果您的程序是用C编写的，则可以调用daemon()函数，该函数将为您完成.然后，即使没有'&'，您也可以启动程序最后，它将作为守护程序运行.

If your program is written in C, you can call daemon() function, which will do it for you. Then you can start your program even without '&' at the end and it will be running as a daemon.

另一种选择是使用 daemon 来调用程序，这也可以完成这项工作.

The other option is to call your program using daemon, which should do the job as well.

- name: Start daemon
  shell: daemon -- myexeprogram arg1 arg2

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