how to run a particular task on specific host in ansible

Question

my inventory file\'s contents -

[webservers]
x.x.x.x ansible_ssh_user=ubuntu

[dbservers]
x.x.x.x ansible_ssh_user=ubuntu

in my tasks file

Answer 1

An alternative to consider in some scenarios is -

delegate_to: hostname

There is also this example form the ansible docs, to loop over a group. https://docs.ansible.com/ansible/latest/user_guide/playbooks_delegation.html -

- hosts: app_servers

  tasks:
    - name: gather facts from db servers
      setup:
      delegate_to: "{{item}}"
      delegate_facts: True
      loop: "{{groups['dbservers']}}"