Thanks Michael your suggestions noted. I did some more testing and looks
like only one single instance, assuming the last instance, from the
inventory is being added to the group, and this is without any conditions.
Very simple playbook example:
---
- hosts: ec2
gather_facts: False
connection: local
vars:
ec2ip: "{{ hostvars[inventory_hostname]['ec2_publicIp'] }}"
ec2dns: "{{ hostvars[inventory_hostname]['ec2_public_dns_name'] }}"
tasks:
- add_host: "hostname={{ ec2ip }} groupname=ec2hosts server_name={{
ec2dns }}"
and I get only one single host in the ec2hosts group:
PLAY [ec2]
********************************************************************
TASK: [add_host hostname={{hostvars[inventory_hostname]['ec2_publicIp']}}
groupname=ec2hosts
server_name={{hostvars[inventory_hostname]['ec2_public_dns_name']}}] ***
ok: [instance_public_ip_obscured] => {"new_groups": ["ec2hosts"],
"new_host": "instance_public_ip_obscured"}
Looks like this is not working the way I assume. From what I can see I have
52 instances in the current ec2 inventory cache:
$ cat ~/.ansible/tmp/ansible-ec2.cache | grep region | sort | uniq -c
47 "ec2_region": "ap-southeast-2",
5 "ec2_region": "eu-west-1",
Thanks,
Igor
On Saturday, May 10, 2014 9:56:37 AM UTC+10, Michael DeHaan wrote:
>
> A few things to cleanup first:
>
> " - add_host: hostname={{ hostvars[inventory_hostname]['ec2_publicIp']
> }} groupname=ec2hosts server_name={{
> hostvars[inventory_hostname]['ec2_public_dns_name']
> }}"
>
> When you get ginormous variables like this, slow down, and define useful
> shortcuts in your "vars" section, like this:
>
> vars:
> ec2ip: "{{ hostvars[inventory_hostname]['ec2_publicIp'] }}"
>
> This allows cleaner playbooks like:
>
> " - add_host: hostname={{ ec2ip }} groupname=ec2hosts server_name={{
> ec2dns }}"
>
> etc
>
> That's unrelated though.
>
> Also this is overkill:
>
> when: hostvars[inventory_hostname]['ec2_region'] ==
> 'ap-southeast-2'
>
> Could have just been:
>
> when: "ec2_region == 'ap-southeast-2'"
>
> Ansible likes it simple.
>
>
>
>
>
>
>
> On Thu, May 8, 2014 at 2:32 AM, Igor Cicimov <
> ig...@encompasscorporation.com <javascript:>> wrote:
>
>> Hi all,
>>
>> I have the following playbook trying to create a subgroup out of my ec2
>> dynamic inventory with instances matching given tags:
>>
>> ---
>> - hosts: ec2
>> gather_facts: False
>> connection: local
>> tasks:
>> - add_host: hostname={{ hostvars[inventory_hostname]['ec2_publicIp']
>> }} groupname=ec2hosts server_name={{
>> hostvars[inventory_hostname]['ec2_public_dns_name'] }}
>> when: hostvars[inventory_hostname]['ec2_region'] ==
>> 'ap-southeast-2'
>> and hostvars[inventory_hostname]['ec2_tag_Role'] ~
>> 'application'
>> and hostvars[inventory_hostname]['ec2_tag_Type'] == 'tomcat'
>>
>> - hosts: ec2hosts
>> gather_facts: True
>> remote_user: user1
>> sudo: True
>> tasks:
>> # fetch instance data from the metadata servers in ec2
>> - ec2_facts:
>>
>> # show all known facts for this host
>> - debug: var=hostvars[inventory_hostname]
>>
>> # just show the instance-id
>> - debug: msg="{{
>> hostvars[inventory_hostname]['ansible_ec2_instance-id'] }}"
>>
>>
>> This is the result of its run:
>>
>> PLAY [ec2]
>> ********************************************************************
>>
>> TASK: [add_host hostname={{hostvars[inventory_hostname]['ec2_publicIp']}}
>> groupname=ec2hosts
>> server_name={{hostvars[inventory_hostname]['ec2_public_dns_name']}}] ***
>> skipping: [54.72.64.112]
>>
>> PLAY [ec2hosts]
>> ***************************************************************
>> skipping: no hosts matched
>>
>>
>> The instances are being picked up correctly, I confirmed that with debug
>> output, but looks like the group is not being populated correctly. I'm
>> probably missing something here since looks like the supposed loop is not
>> happening.
>>
>> Can anyone spot what am I doing wrong here?
>>
>> Thanks,
>> Igor
>>
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