Yes, I can work with that.
Thanks for your help.
On Wednesday, 11 March 2015 17:15:58 UTC, Jonathan Davila wrote:
>
> Does my example above help you as far as the templating piece?
>
> Personally I would abstract out the desired state for the route-file
> status into it's own dict to smth like this:
>
> route_file_state:
> routes-other: present
> routes-ext: absent
>
>
> would prevent that extra attribute from interfering with my jinja example
> and needing to add more logic.
>
>
>
> On Wednesday, March 11, 2015 at 1:07:52 PM UTC-4, John McNulty wrote:
>>
>> Hi,
>>
>> For just processing host_routes I had.
>>
>> - name: Write network routes
>> template: >
>> src=route.j2
>> dest={{ net_path}}/route-{{ item.value.device }}
>> mode=0644 owner=root group=root
>> with_dict: host_routes
>> when: item.value.routes is defined
>> tags: netdev
>>
>> And the template was ..
>>
>> {% for network,gateway in item.value.routes.iteritems() %}
>> {{ network }} via {{ gateway }} dev {{ item.value.device }}
>> {% endfor %}
>>
>> I needed the 'when' conditional because the dict sometimes contains
>> something like this instead to ensure that old/retired/changed
>> network-script route files must be removed:
>>
>> routes-ext:
>> device: 'eth6.111'
>> absent: true
>> routes-other:
>> device: 'eth6.222'
>> absent: true
>>
>> And I cater for that with ..
>>
>> - name: Remove 'absent' route files
>> file: path={{ net_path}}/route-{{ item.value.device }} state=absent
>> with_dict: host_routes
>> when: item.value.absent is defined
>> tags: netdev
>>
>>
>>
>> On Wednesday, 11 March 2015 15:23:43 UTC, Jonathan Davila wrote:
>>>
>>> Would you mind sharing the full body of the task that pertains to this
>>> as well as the template file?
>>>
>>> On Tuesday, March 10, 2015 at 12:19:46 PM UTC-4, John McNulty wrote:
>>>>
>>>>
>>>> So the reason why I tried using union was this github issue (
>>>> https://github.com/ansible/ansible/issues/7495 ) which implied it
>>>> should work (assuming the PR got actioned).
>>>>
>>>> But looking at the code ( lib/ansible/runner/filter_plugins/mathstuff.py
>>>> ) it doesn't look like that's the case as union() doesn't match what
>>>> this article (
>>>> http://stackoverflow.com/questions/38987/how-can-i-merge-two-python-dictionaries-in-a-single-expression)
>>>>
>>>> describes as the 'pythonic way'.
>>>>
>>>> z = x.copy()
>>>> z.update(y)
>>>>
>>>> So I tried to emulate that with ...
>>>>
>>>> with_dict: "{% set r = host_routes.copy() %}{%
>>>> r.update(standard_routes) %}{{ r }}"
>>>>
>>>> resulting in ..
>>>>
>>>> fatal: [localhost] => template error while templating string: unknown
>>>> tag 'r'
>>>>
>>>> I've also scanned all the Jinja2 filters (
>>>> http://jinja.pocoo.org/docs/dev/templates ) looking for a potential
>>>> candidate and can't see anything that looks suitable.
>>>>
>>>> I really am an Ansible & jinja2 pseudo-novice, so I'm kind of stumbling
>>>> around a bit here :)
>>>>
>>>>
>>>>
>>>> On Tuesday, 10 March 2015 13:23:49 UTC, John McNulty wrote:
>>>>>
>>>>>
>>>>> Hi,
>>>>>
>>>>> So here's the scenario - I'm given a data structure that when
>>>>> converted to yaml looks like this (names & numbers invented).
>>>>>
>>>>> host_routes:
>>>>> route-oob:
>>>>> device: bond.123
>>>>> routes:
>>>>> 10.118.0.0/16: '10.118.255.254'
>>>>> route-int:
>>>>> device: bond.456
>>>>> routes:
>>>>> 172.168.0.0/23: '172.168.1.254'
>>>>>
>>>>> I can use that with a template to create the network-script route
>>>>> files needed, that's easy enough. But in real life there can be up to
>>>>> several OOB routes that this host will need depending on which datacentre
>>>>> /
>>>>> hall / security zone it resides in. e.g.
>>>>>
>>>>> standard_routes:
>>>>> route-oob:
>>>>> device: bond.123
>>>>> routes:
>>>>> 10.198.0.0/24: '10.118.255.254'
>>>>>
>>>>> I'd like to add these additional routes to the appropriate group_var
>>>>> file and then merge them together when creating the route files. I
>>>>> can't
>>>>> get this to work though. I've tried all the following:
>>>>>
>>>>> with_dict: host_routes|union(standard_routes)
>>>>>
>>>>> with_dict: union(host_routes, standard_routes)
>>>>>
>>>>> with_dict: host_routes + standard_routes
>>>>>
>>>>>
>>>>> and get the same error every time ..
>>>>>
>>>>> fatal: [localhost] => with_dict expects a dict
>>>>>
>>>>>
>>>>> Is there another filter or some other way of doing this? I don't
>>>>> want to change the default hash_behaviour to merge just for this one use
>>>>> case as that has much wider implications.
>>>>>
>>>>> Thanks, John
>>>>>
>>>>>
>>>>>
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