Ansible – Combine Multiple Dictionaries with a List for Looping

ansibleansible-playbook

I have two dictionaries per host in ansible:

{ "rtt": [38,1,97] }

{ "site": ["A","B","C"] }

I want to now loop of a list or items, where i can reference the individual items like:

debug:
 msg: "{{ item.site }} is {{ item.rtt }}"
with_items: "{{ X }}"

How do i construct X ?

Best Answer

Is this probably what are you looking for? The play

- hosts: localhost
  vars:
    rtt: [38,1,97]
    site: ["A","B","C"]
  tasks:
    - debug:
        msg: "{{ item.0 }} is {{ item.1 }}"
      loop: "{{ site|zip(rtt)|list }}"

gives

  msg: A is 38
  msg: B is 1
  msg: C is 97

Related Solutions

Ansible – How to Get a Subelement of a Nested List of Dictionaries

Figured out how to use json_query properly.

  - debug:                                                                      
      msg: "{{ dns_zone_config | json_query(_query) }}"                         
    vars:                                                                       
      _query: "[].hosts[?!no_ptr_record][].[ip,ipv6][]"

Results in:

TASK [debug] ***********************************************************************************
ok: [localhost] => {
    "msg": [
        "10.180.0.200",
        "fe80::1",
        "11.180.0.200"
    ]
}

Needs just 1-2 sec instead of ~30 sec with double loops :)

Ansible: Loop over registered output in the next task

What you do is, you register a variable in the first task. That var contains the IPs, then you filter that var to be a list and output it as debug and register that debug output and then you try iterate over the output of the debug. Thats not good.

Why don't you iterate over the filter that you output in the debug? So use:

- name: return next available IP address for network {{ ip_dns }}
  set_fact:
    ipaddr: "{{ lookup('nios_next_ip', '{{ item }}', num=10, provider=nios_provider) }}"
  with_items: "{{ dvs_output.results | map(attribute='stdout_lines') | list }}"

Also - next problem - you iterate over a list and set a variable with a value. So, after that task, there is still one variable ipaddr which contains the last IP. If you want to do something with all the IP addresses, then you should use:

- name: return next available IP address for network {{ ip_dns }}
  include_tasks: loop_over_an_ip.yml
  with_items: "{{ dvs_output.results | map(attribute='stdout_lines') | list }}"

The loop_over_an_ip.yml contains a list of tasks that should be done per IP (which is stored in item). You could rename it via loop_var.

- name: return next available IP address for network {{ ip_dns }}
  include_tasks: loop_over_an_ip.yml
  with_items: "{{ dvs_output.results | map(attribute='stdout_lines') | list }}"
  loop_control:
    loop_var: newip

Best Answer

Related Solutions

Ansible – How to Get a Subelement of a Nested List of Dictionaries

Ansible: Loop over registered output in the next task

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