Ansible

https://docs.ansible.com/ansible/latest/index.html

Installing ansible

sudo apt update
sudo apt install software-properties-common
sudo apt-add-repository ppa:ansible/ansible
sudo apt update
sudo apt install ansible

Setting up target

create a Host file refer to this https://docs.ansible.com/ansible/latest/inventory_guide/intro_inventory.html

hosts

all:
  # group of remote
  hosts:
    172.16.100.135:
    172.16.101.124:

Preparing key file

You should use the *.pem file you downloaded when you created the key

Your ssh key must not be too open

sudo chmod 600 <path-to-key>

Setting up playbook

Here is an example of a simple playbook. you can refer to ansible documentations for different providers.

playbook.yml

- hosts: all
  tasks:
    - name: Print message
      debug:
        msg: Hello Ansible World

Running ansible-playbook

ansible-playbook -i ./hosts --private-key <path-to-key> playbook.yml

Example

$ ansible-playbook -i ./hosts --private-key ./key.pem playbook.yml
PLAY [all] *******************************************************************************************************************************************************************************************

TASK [Gathering Facts] *******************************************************************************************************************************************************************************
ok: [172.16.100.135]
ok: [172.16.101.124]

TASK [Print message] *********************************************************************************************************************************************************************************
ok: [172.16.100.135] => {
    "msg": "Hello Ansible World"
}
ok: [172.16.101.124] => {
    "msg": "Hello Ansible World"
}

PLAY RECAP *******************************************************************************************************************************************************************************************
172.16.100.135             : ok=2    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0
172.16.101.124             : ok=2    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0

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