user_data for nova_compute module

Archives Ansible Project
1

Hello

I have a question regarding user_data parameter for nova_compute
http://docs.ansible.com/nova_compute_module.html

Is it possible to see some examples?

What I am trying to do:
Pass information to run commands / install software inside the instance after it is launched

Thanks!

2

Figured it out thanks to sivel on IRC.
In case anyone else is wondering just do a lookup(‘file’, ‘filename’)
The file called “filename” can be a bash script file, cloud init file, etc.
Make sure the file starts with the appropriate header such as
#!/bin/bash or #cloud-config etc.

3

lookup('pipe', 'script') might be more appropriate, it will succeed in
many cases that file will fail.

4

pipe is failing on me

pb_set_proxy: “{{ lookup(‘pipe’, ‘proxy-set.sh’) }}”

/bin/sh: 1: proxy-set.sh: not found
ERROR: lookup_plugin.pipe(proxy-set.sh) returned 127

I know it says not found but it is present and in same dir.

I actually have another problem

I am using 2 user_data parameters like this in the same nova_compute task

user_data: “{{ lookup(‘file’, ‘proxy-set.sh’) }}”
user_data: “{{ lookup(‘file’, ‘misc-install.sh’) }}”

Only the misc-install.sh is working and the proxy-set.sh is not.
What’s the correct way to do this?

Thanks!

5

I don’t really think pipe is what you need. pipe executes a command and returns the result. I think ‘file’ is still appropriate.

As far as your double user_data, you can only include one “blob” of data. You could try concatenating the scripts such as:

user_data: “{{ lookup(‘file’, ‘proxy-set.sh’) ~ ‘\n’ ~ lookup(‘file’, ‘misc-install.sh’) }}”

6

ah, misunderstood, thought you wanted data from executing the script,
not to upload the script itself as data.

7

Thanks Matt!