Installing ansible

# Official PPA for Ubuntu
sudo apt-add-repository -y ppa:ansible/ansible
sudo apt-get update
sudo apt-get install -y ansible

Playbooks meant to only be run locally

   1 - hosts: local
   2   connection: local
   3   become: yes
   4   become_user: root
   5   tasks:
   6    - name: Install Nginx
   7      apt:
   8        name: nginx
   9        state: installed
  10        update_cache: true

or specify hosts: all: 

   1 - hosts: all
   2   become: yes
   3   become_user: root
   4   tasks:
   5    - name: Install Nginx
   6      apt:
   7        name: nginx
   8        state: installed
   9        update_cache: true

and then invoke ansible with: 

ansible-playbook -i 'localhost,' -c local Playbook.ansible.yml

Disable SSH host key checking

Export ANSIBLE_HOST_KEY_CHECKING before running ansible: 

ANSIBLE_HOST_KEY_CHECKING=False ansible -i inventory.yml all -m ping

or into ansible.cfg put: 

[defaults]
host_key_checking = False

Async/parallelizing tasks

See http://toroid.org/ansible-parallel-dispatch and https://docs.ansible.com/ansible/latest/user_guide/playbooks_async.html, and https://blog.crisp.se/2018/01/27/maxwenzin/how-to-run-ansible-tasks-in-parallel, needs more research.

Tips & tricks

   1 # Start at a specific named task, e.g. the one called "install packages"
   2 ansible-playbook playbook.yml --start-at="install packages"

Good articles

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SamatsWiki: Ansible (last edited 2021-06-24 18:44:34 by SamatJain)