Run ansible playbook on specified host and group

ansible

Let's suppose that we have host group dev with corresponding group vars.

[dev]
host1
host2

How to run ansible playbook with a host3 that is not in group dev using CLI?

Best Answer

You can specify a host not in inventory with an extra -i. You have to use a comma separated list with a trailing comma to make it work:

ansible-playbook -i 'my-inventory.ini' -i 'host3,' playbook.yaml

I don't know how to associate host3 with a group like dev from the CLI, so if you've got other stuff in the inventory, you could restrict it like this:

ansible-playbook -i 'my-inventory.ini' -i 'host3,' playbook.yaml --limit 'dev:host3'

Of course, that'll only work if your playbook doesn't explicitly need to reference the dev group, and uses all instead.

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Ansible reports “permission denied” when issuing command on remote host

You're using --become-user admin, so you're essentially doing sudo -u admin, but you intend to become root (sudo -u root).

Don't specify --become-user admin or use --become-user root, and Ansible by default will try to become root.

If you need to specify a password for becoming root, use the --ask-become-pass flag.

If you don't want to be prompted for a sudo password when using sudo, your sudoers entry for the admin user should read as follows instead:

admin   ALL=(ALL)       NOPASSWD:ALL

Ansible: execute local_action only once while running playbook against a group of hosts (multiple managed hosts)

Maybe you should check: run_once & delegate_to

- command: /opt/application/upgrade_db.py
  run_once: true
  delegate_to: web01.example.org

Doc: https://docs.ansible.com/ansible/latest/user_guide/playbooks_delegation.html

Kind regards,

Best Answer

Related Solutions

Ansible reports “permission denied” when issuing command on remote host

Ansible: execute local_action only once while running playbook against a group of hosts (multiple managed hosts)

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