Can I get a list of existing ELBs in a VPC ?

[Alex Leonhardt]

Hi,

I'm trying to get a list of ELBs to then use that to add new instances that I create to these ELBs, but am not successful - the ec2_elbs is always empty when checking. I'm currently trying the basic example that's meant to add new instances to a ELB, however, I try to do this without knowing the ELBs name(s). Is that even possible ? If so, it'd be great if there was a link to a doc or blog or something on who to get that list of ELBs ? 

Example: 

- hosts: tag_Name_Demo:&tag_Svc_Apache
  gather_facts: true
  user: ec2-user

 # basic pre_task and post_task example
 pre_tasks:
 - name: Gathering ec2 facts
   action: ec2_facts

 - name: Instance De-register
   local_action:
     module: ec2_elb
     region: eu-west-1
     instance_id: "{{ ansible_ec2_instance_id }}"
     state: 'absent'


tasks:

 - name: install httpd
   sudo: yes
   yum: name=httpd state=present

 - name: ensure httpd is running
   sudo: yes
   service: name=httpd state=started

 - name: Check NTP service
   sudo: yes
   service: name=ntpd state=started


post_tasks:
 - debug: msg="{{ item }}"
   with_items: ec2_elbs

 - name: Instance Register
   local_action:
     module: ec2_elb
     region: eu-west-1
     instance_id: "{{ ansible_ec2_instance_id }}"
     ec2_elbs: "{{ item }}"
     state: 'present'
     wait: yes
     ignore_errors: yes
   with_items: ec2_elbs

The output i get : 

PLAY [tag_Name_Demo:&tag_Svc_Apache] ******************************************

GATHERING FACTS ***************************************************************

ok: [52.17.75.238]

ok: [52.17.52.33]

TASK: [Gathering ec2 facts] ***************************************************

ok: [52.17.75.238]

ok: [52.17.52.33]

TASK: [Instance De-register] **************************************************

ok: [52.17.75.238 -> 127.0.0.1]

ok: [52.17.52.33 -> 127.0.0.1]

TASK: [install httpd] *********************************************************

ok: [52.17.52.33]

ok: [52.17.75.238]

TASK: [ensure httpd is running] ***********************************************

ok: [52.17.75.238]

ok: [52.17.52.33]

TASK: [Check NTP service] *****************************************************

ok: [52.17.52.33]

ok: [52.17.75.238]

TASK: [debug msg="{{ item }}"] ************************************************

skipping: [52.17.52.33]

skipping: [52.17.75.238]

TASK: [Instance Register] *****************************************************

skipping: [52.17.52.33]

skipping: [52.17.75.238]

PLAY RECAP ********************************************************************

52.17.52.33                : ok=6    changed=0    unreachable=0    failed=0

52.17.75.238               : ok=6    changed=0    unreachable=0    failed=0

 

Maybe I'm missing the obvious .. the creation of the ELBs is done in a separate play as I want to be able to run the two plays, create environment and create instances, separately. But maybe I can't do that, so your advice would be very useful :) !

Thanks!

Alex

[Alex Leonhardt]

Hi,

Since there's no reply - possible to get someone at ansible to check / comment ? It seems similar to a question regarding VPCs that was recently asked and also has no answers yet?

In fact, when creating the ELBs, can I keep a local list of them thats being produced by the playbook, if I can't get it dynamically?

Thanks!
Alex

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[ddffgpmfn]

Looked recently. Ended up using boto's elbadmin and cutting the output up.

command: elbadmin -r eu-west-1 list

[Alex Leonhardt]

Hi All,

I’ve done some work around this, for those that are interested : 

https://github.com/alex-leonhardt/ansible-modules-core/commit/2c3f7928b8995ec7c6903da6c507643efcad6d1d

I can’t see where / how to run some unit tests for this module, so I can’t verify if I broke something by changing this, however, creating, listing and deleting ELBs seems to work just fine. I’ve also updated the documentation / examples so you can clone and try yourself if needed.

Please let me know what you think.

Alex

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