Re: [ansible-project] Dealing with non-fixed length lists of variables

[Jon Spriggs]

Why not structure your data like this:

---

- hosts: all

  vars:

   provider:

     password: Password

     server: IP

     user: username

     validate_certs: no

     server_port: port

  mapping: # This is new and might be stored elsewhere :)

    server1.example.com: 192.0.2.1

    server2.example.com: 192.0.2.2

    server3.example.com: 192.0.2.3

  tasks:

   - name: Create a pool

     bigip_pool:

       provider: "{{ provider }}"

       lb_method: ratio-member

       name: "{{ service }}"

       slow_ramp_time: 120

     delegate_to: localhost

    - name: Add members to pool

     bigip_pool_member:

       provider: "{{ provider }}"

       description: "webserver {{ item.key }}"

       host: "{{ item.value }}"

       name: "{{ item.key }}"

       pool: "{{ service }}"

       port: "{{ lbport }}"

     loop:"{{ mapping|flatten() }}"

Regards,

--
Jon "The Nice Guy" Spriggs
@jontheniceguy everywhere...
https://jon.sprig.gs

On Sat, 23 Feb 2019 at 14:29, Spencer Webb <spencer...@gmail.com> wrote:

Hi all,

I've got a playbook that uses variables to create a load balanced pool and the required members on our test F5 BigIP.

I've got the basics working without issue, however, the number of members of a pool for any given run is not a fixed number and could range from 1 up to say 10.

I'm running Ansible Tower and invoking the template via tower-cli. I'm using extra-vars to provide realip and realserver and looped through. The default values are set to null so I was hoping to loop through the list until a null value for item.host is observed. I'm not sure if this is the best way to deal with this, it's the first time that I've tried to deal with variable lists that are not fixed in number.

Here's my current code, any help would be greatly appreciated.

Cheers

Spence

---

- name: Create a VIP, pool and pool members

 hosts: all

 connection: local

  vars:

   provider:

     password: Password

     server: IP

     user: username

     validate_certs: no

     server_port: port

  tasks:

   - name: Create a pool

     bigip_pool:

       provider: "{{ provider }}"

       lb_method: ratio-member

       name: "{{ service }}"

       slow_ramp_time: 120

     delegate_to: localhost

    - name: Add members to pool

     bigip_pool_member:

       provider: "{{ provider }}"

       description: "webserver {{ item.name }}"

       host: "{{ item.host }}"

       name: "{{ item.name }}"

       pool: "{{ service }}"

       port: "{{ lbport }}"

     loop:

       - { host: "{{ realip1 }}",  name: "{{ realserver1 }}" }

       - { host: "{{ realip2 }}",  name: "{{ realserver2 }}" }

       - { host: "{{ realip3 }}",  name: "{{ realserver3 }}" }

       - { host: "{{ realip4 }}",  name: "{{ realserver4 }}" }

       - { host: "{{ realip5 }}",  name: "{{ realserver5 }}" }

       - { host: "{{ realip6 }}",  name: "{{ realserver6 }}" }

       - { host: "{{ realip7 }}",  name: "{{ realserver7 }}" }

       - { host: "{{ realip8 }}",  name: "{{ realserver8 }}" }

       - when: item.host != ""

       - delegate_to: localhost

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