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Ansible in a Minute · Ansible Core ·

Use delegate_to to run a task on another host

Short answer

Use delegate_to so a task runs on localhost (or another host) while the play still targets the current inventory host.

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echo inventory_hostname delegated to localhost

Example

A quick heads-up: Every environment is different. Review and test this example before you run it on systems you care about.

YAML
---
- name: Echo inventory_hostname on the controller
  hosts: all
  gather_facts: false
  tasks:
    - name: Echo inventory_hostname
      ansible.builtin.command:
        cmd: echo "{{ inventory_hostname }}"
      delegate_to: localhost
      changed_when: false

How it works

delegate_to changes where the task runs. inventory_hostname still names the current play host. Use this when the work must happen on the controller or on a load-balancer host, not on the target.

When to use it

  • Updating a pool or inventory record on the controller
  • Running a command that only exists on localhost

Requirements

  • Ansible: >=2.14

Validation

  • Syntax validated
  • Not execution-tested
  • Last verified 2026-09-15

Notes

debug cannot be delegated. Connection variables on the task refer to the delegated host. Prefer a host that exists in inventory. Pair with run_once when many hosts would write the same file in parallel.

Reference

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Use delegate_to to run a task on another host · Level Up Labs