sudo apt-get install ansible

host=127.0.0.1

cat<<EOF | ansible-playbook  /dev/stdin
- hosts: $host

  tasks:
    - name: "ping $host"
      ping:

    - name: "execute a shell command"
      shell: "date; whoami; df -h; set;"
EOF
# 127.0.0.1                  : ok=3    changed=1    unreachable=0    failed=0   



port=50000

cat<<EOF | ansible-playbook /dev/stdin
- hosts: $host

  tasks:
    - name: check open port
      wait_for:
         port: "{{ item }}"
         state: started
      with_items:
        - ${port}
EOF

nc -l ${port}
nc -lu ${port} # TODO UdP

• https://learnxinyminutes.com/docs/ansible/
• https://github.com/ansible/ansible-modules-core/issues/1674
• https://medium.com/@chanhiuyeung/ansible-playbook-for-network-port-checking-from-host-level-openshift-as-example-fb1960090fdf

mkdir -p molecule-test-folder && cd $_
python3 -m venv .venv
source .venv/bin/activate
pip install -U setuptools pip 'molecule'
molecule --version # molecule, version 2.22
pip install -U setuptools  pip 'molecule[docker]'

molecule init role -r my-new-role
cd my-new-role
rm meta/ -rf
molecule test --all

• https://molecule.readthedocs.io/en/stable/getting-started.html
• https://testinfra.readthedocs.io/en/latest/modules.html