run background job in the shell or script module

[shirou]

Hi all,

I want to launch a script as a background job by using "&".
First, I try the shell module but it doesn't work (means run as a
foreground job).

---
- hosts: localhost
tasks:
- name: sleepy
shell: nohup sleep 10 &

Second, I try to use script module using this script

#!/usr/bin/env sh
nohup sleep 10 &

and playbook is

---
- hosts: localhost
tasks:
- name: sleepy
script: sleepy.sh

However, it run as a foreground job.

I type this line which is shown by the -vvv option.

chmod +x /home/spam/.ansible/tmp/ansible-1381930427.99-115271615480671/sleepy.sh;
/home/spam/.ansible/tmp/ansible-1381930427.99-115271615480671/sleepy.sh

and it works well.

Could you tell me how to run a background job on the script or shell module?

I am using ansible 1.4 on the Ubuntu 12.10, python 2.7.3

Thank you.
WAKAYAMA Shirou

[Michael DeHaan]

Please read about async mode here:

http://www.ansibleworks.com/docs/playbooks_async.html

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[shirou]

it works.
Thank you!

2013/10/17 4:51 "Michael DeHaan" <mic...@ansibleworks.com>:

[Michael Slinn]

I have a similar problem, and I read the docs, but I must be not seeing something obvious. Here is a fragment of a yaml file (the entire file is here):

   - name: Launch project

     command: (sleep 2; /bin/echo "Of course your realize that this means war" > $home/nohup.out)

     async: 15

     poll: 0

There is no output from that step when run with -vv. What am I missing?

[Michael DeHaan]

async: 15 will set a "time to live" for 15 seconds to the task.

Poll: 0 means "fire and forget, I don't want any output".

Sounds like you might want to do poll: 5 or so.

It also sounds like your project might benefit from a service init script, and then you can just use the service module.

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[Mike Slinn]

I just want to kick off a background process. I don't want any output.
I thought that Service only pertained to system services. Can I use them for background tasks also?

Thanks,

Mike

[Michael DeHaan]

So contradictory statements:

"There is no output from that step when run with -vv. What am I missing?"

"I just want to kick off a background process. I don't want any output."

Which do you want and what are you getting versus what you are expecting?

"I thought that Service only pertained to system services. Can I use them for background tasks also?"

Yes, you can write system init scripts to do basically anything.

You might also be interested in something like supervisor, which we also have a module for.

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[Michael Slinn]

I defined a system service and it works. Thank you!