Anyone know if there is a way to do this same sort of discovery based on
EC2 tags? i.e. Gather the IP associated with tag role: master and make use
of it?
On Thursday, April 30, 2015 at 10:08:37 AM UTC-7, MikeA wrote:
>
> That worked. Thanks!
>
> On Sunday, April 12, 2015 at 2:29:03 AM UTC-7, Tzach Livyatan wrote:
>>
>> Here is a similar example from my project
>>
>> Creating the instance on EC2:
>> ---
>> - name: Create a cluster nodes on EC2
>> hosts: localhost
>> connection: local
>>
>> tasks:
>> - name: Launch instances
>> local_action:
>> module: ec2
>> region: "{{region}}"
>> keypair: "{{key_name}}"
>> group: "{{security_group}}"
>> instance_type: "{{instance_type}}"
>> image: "{{image}}"
>> count: "{{cluster_nodes}}"
>> wait: yes
>> register: ec2_cluster
>>
>> - name: Add instances to private ip group
>> local_action: add_host name={{item.private_ip}} groupname=Private
>> with_items: ec2_cluster.instances
>>
>> In the role vars/main.yaml:
>> seed: "{{groups.Private[0]}}"
>>
>> And using "seed" in the relevant template.
>>
>> On Friday, April 3, 2015 at 9:26:54 PM UTC+3, James Martin wrote:
>>>
>>> Mike,
>>>
>>> This may give you some insight:
>>>
>>>
>>> https://github.com/basho-labs/ansible-riak/blob/develop/examples/form_cluster.yml
>>>
>>> Particularly:
>>>
>>> primary_node: "{{
>>> hostvars[groups['riak_cluster'][0]]['riak_outputs']['node_name'] }}"
>>>
>>> - James
>>>
>>>
>>>
>>> On Wednesday, April 1, 2015 at 5:16:12 PM UTC-4, MikeA wrote:
>>>>
>>>> I'm launching a cluster of ec2 instances and would like one (don't care
>>>> which one) of them to become a head node and pass it's IP to the other
>>>> cluster members. I've been looking for an easy way to do this but could
>>>> not
>>>> fine one so would appreciate any assistance.
>>>>
>>>> Here is what I've got.
>>>> from my main playbook I'm calling a sub playbook that launches the ec2
>>>> instances. there i add the instances to the {{ group_name }} group. where
>>>> group_name is a variable defined in a var file.
>>>>
>>>> later on the main playbook I'd like to pull one of the IP's and feed it
>>>> into a startup script to be called on all the hosts.
>>>>
>>>> I could not find a way to extract element 0 from the group_name var
>>>> array.I tried this: set_fact: headnode={{ groups[[{{ group_name }}][0]] }}
>>>> but it did not work. I had to use the actual group_var value and then I
>>>> got
>>>> the IP but it was not a clean string rather it looked like this:
>>>> [u'10.77.0.211',
>>>>
>>>> Any idea how to get a clean IP from the group_name set? BDW in the sub
>>>> playbook where I launch the instances I register the private ip's from the
>>>> instances: set_fact: private_ips: "{{ ec2.tagged_instances|join(', ',
>>>> attribute='private_ip') }}" but I cannot refer to this variable back in
>>>> the
>>>> main playbook.
>>>>
>>>> thanks in advance.
>>>>
>>>
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