Assigning IP to multiple hosts - loops

Question

I am trying to assign a range of IP to different hosts, but first I am checking if the IP is already attributed. If it is, it gives me an error, so I would like to avoid that too(actually I can assign the IP, but can't pass that error, I am using ignore_errors: yes for now but I would like a better way). Here is part of my script:
---
- hosts: all
gather_facts: yes
become: yes
vars_files:
- client2
tasks:
- set_fact:
intip: "{{ intip | default([]) + [item] }}"
loop: "{{ ansible_interfaces | map('extract',ansible_facts, 'ipv4') | select('defined') | map(attribute='address') | list }}"
ignore_errors: yes
- name: Check IP address
shell:
"ip a a '{{ start_ip|ipmath(my_idx) }}' dev spanbr"
loop_control:
index_var: my_idx
when: (item == inventory_hostname )
loop: "{{ ansible_play_hosts }}"
ignore_errors: yes
I am using this var file, but maybe there is a better way? (I am trying to use something like the first example, but can't get my head around to use it on every hosts)
First vars file (didn't try yet):
client:
- interface:
- local_ip: 10.10.10.10
- name: eth1
- interface:
- local_ip: 10.10.10.11
- name: eth1
Second file:
interface:
- config:
- name: eth0
- config:
- name: eth1
start_ip: 10.10.10.10
I can get only one interface getting the IP and ignoring the address, but as the when conditional is not a loop it only check one interface:
Output:
TASK [Check IP address] ************************************************************************************************************************
skipping: [host2] => (item=host1)
failed: [host1] (item=host1) => {"ansible_index_var": "my_idx", "ansible_loop_var": "item", "changed": true, "cmd": "ip a a '10.10.10.10' dev spanbr", "delta": "0:00:00.005429", "end": "2022-10-20 08:49:43.800954", "item": "host1", "msg": "non-zero return code", "my_idx": 0, "rc": 2, "start": "2022-10-20 08:49:43.795525", "stderr": "RTNETLINK answers: File exists", "stderr_lines": ["RTNETLINK answers: File exists"], "stdout": "", "stdout_lines": []}
skipping: [host1] => (item=host2)
...ignoring
failed: [host2] (item=host2) => {"ansible_index_var": "my_idx", "ansible_loop_var": "item", "changed": true, "cmd": "ip a a '10.10.10.11' dev spanbr", "delta": "0:00:00.002691", "end": "2022-10-20 07:49:43.815422", "item": "host2", "msg": "non-zero return code", "my_idx": 1, "rc": 2, "start": "2022-10-20 07:49:43.812731", "stderr": "RTNETLINK answers: File exists", "stderr_lines": ["RTNETLINK answers: File exists"], "stdout": "", "stdout_lines": []}
...ignoring
I would like to use a notify but I need to use the loop on the task itself so that may be an issue...
Any ideas please??
Here is the output of intip (set_fact) if that helps:
TASK [set_fact] ********************************************************************************************************************************
ok: [host1] => (item=192.168.1.100)
ok: [host1] => (item=127.0.0.1)
ok: [host1] => (item=10.10.10.10)
ok: [host1] => (item=169.254.0.1)
ok: [host2] => (item=127.0.0.1)
ok: [host2] => (item=10.10.10.11)
ok: [host2] => (item=192.168.1.101)

Answer 1

Alright, I found a way to do it, by using host_vars and group_vars, and making my script even easier to write :
---
- hosts: all
gather_facts: yes
become: yes
tasks:
- set_fact:
intip: "{{ hostvars[inventory_hostname].ansible_all_ipv4_addresses }}"
- name: Check IP address
shell:
"ip a a '{{ local_ip }}' dev spanbr"
when: local_ip not in intip
Just by creating 2 files in host_vars.
host1.yaml:
ansible_host: "some_ip"
local_ip: 10.10.10.10
and the same for host2.yaml with different values. All is working great and it's making the script much easier to read too.