Reading data from a file?

[jimbob...@gmail.com]

Hi.

I'm quite new to ansible.

I have an iptables module that takes an array of ip addresses and generates iptables rules using a template. It works well. It's called like this:

    - { role: iptables, whitelisted_ips: [
 '1.1.1.1',  # dave
 '2.2.2.2', # dave
 '3.3.3.3', # dave
 '4.4.4.4', # malcolm
 '5.5.5.5', # edna
    ] }

As you can see, Dave has a lot of ip addresses. I'd like to call it like this instead:

    - { role: iptables, whitelisted_ips: [ 'dave', 'malcolm', 'edna', ] }

But I don't know where to start. How can I do this?

Hope someone can help.

[Henry Finucane]

If you want to reference a previous variable, it's going to have to be
a scalar, and you have to do something like this:

whitelisted_ips: [ "{{dave}}", "{{malcolm}}" ...

The way I've been doing things like this is setting up a dict for the
environment or group like this:

whitelisted_ips:
dave:
- 1.1.1.1
- 2.2.2.2
malcolm:
- 4.4.4.4
edna:
- 5.5.5.5

And then calling roles like this:

- role: iptables

I like it because if you want to know what the settings are for a
group, you look at the group vars, or the environment, the environment
vars, instead of having it in the playbook, which is sort of the wrong
layer. I also have separate dicts for administrative concerns-
everything in the environment is going to be the same, there- and
services, where each group is liable to be different.

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--
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| Henry Finucane
| "I hear aphorisms are popular"
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