How to get host IP and hostname using Ansible

Question

I am trying to create a task that will get the host target IP address and host-name that are in the inventory then save it to a file in the local directory.

Would love to save the data like this:

hostname:ip-address

where to start?

Answer 1

I would suggest using"delegate_to", I tried that on my computer and it worked properly. I put the first step to delete the file if it exists so it can be executed multiple times. This is a very fast example, I suggest to use variables for the path, etc. But I think you can get the idea

---
- hosts: your_inventory

  tasks:
    - name: delete the file if exists
      file:
        path: /home/yourpath/host_ip.txt
          state: absent
      delegate_to: localhost
    - name: get data to a file
      lineinfile:
        dest: /home/yourpath/host_ip.txt
        create: yes
        line: "{{hostvars[inventory_hostname].ansible_hostname}}:{{hostvars[inventory_hostname].ansible_default_ipv4.address}}"
      delegate_to: localhost