need help with nested loop

[eric sandgren]

First I'm a sysadmin not a developer I often use ansible to set up things in f5 -ltm i often need to add several hosts to a number of pools. The loadbalancing setup in f5 products in a glance consist of av VIP (virtual server) that is linked to a Pool containing one or more physical servers.

I get stuck in how to set up the loop, i define this first

var_node:
       - { host: 1.2.3.4, name: server1.com }   
       - { host: 1.2.3.5, name: server2.com }
var_pool:
       - { pool: pool1, port: 80 }
       - { pool: pool2, port: 8080 }
       - { pool: pool3, port: 443 }

The module ii'm trying to use

- name: add nodes to pools
      bigip_pool_members:
        provider: "{{ provider }}"
        partition: "{{ partition }}"
        pool:{{ item.pool }}          "here I want to loop var_pool

        name: "{{ item.name }}    "here I want to loop var_node"

        port: "{{ item.port}}           "and again ....var_pool"

     loop: ?????

I realize I'm probably on a dead end thinking this way any good input from a developer-mind would be extremely appreciated  

/Eric

[Kai Stian Olstad]

You are looking for with_together
https://docs.ansible.com/ansible/2.4/playbooks_loops.html#looping-over-parallel-sets-of-data


--
Kai Stian Olstad

[J Hawkesworth]

Yeah with_together would work in your scenario.

Strangely I was looking to do something similar but the very helpful F5 team provided me with this, so I thought I'd share it.

I was trying to find a way to switch the pool members between 2 sets of servers.

One difference here is we're associating the port with the pool member, rather than the pool in your case.

vars:

   f5_pools:
      middleware:
        red:
          - host: 192.168.27.1
            port: 80
        green:
          - host: 192.168.27.2
            port: 80
      webfront:
        red:
          - host: 192.168.27.1
            port: 80
          - host: 192.168.27.2
            port: 80
        green:
          - host: 192.168.28.1
            port: 80
          - host: 192.168.28.2
            port: 80

  tasks:

  - name: RED
    bigip_pool_member:
      pool: "{{ item }}"
      aggregate: "{{ f5_pools[item].red }}"
      replace_all_with: yes
      provider: "{{ provider }}"
    delegate_to: localhost
    loop: "{{ f5_pools.keys() }}"
    tags: red
 
  - name: GREEN
    bigip_pool_member:
      pool: "{{ item }}"
      aggregate: "{{ f5_pools[item].green }}"
      replace_all_with: yes
      provider: "{{ provider }}"
    delegate_to: localhost
    loop: "{{ f5_pools.keys() }}"
    tags : green