need help with nested loop

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1

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

2

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

3

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