Ansible Installation Process

Ansible Installation Process

qMainly, there are two types of machines when we talk about deployment:

  • Control Machine − Machine from where we can manage other machines.
  • Remote Machine − Machines that are handled/controlled by the control machine.

qThere can be multiple remote machines that are handled by one control machine.

qAnsible Control Machine Requirements:

I.Install Python 2 (2.6 or 2.7) or Python 3 (3.5 or Higher).

II.Install Python 2 or 3 on Remote Machines.

III.Windows does not support as a Control Machine (Just by WSL).

  • Ansible Does not add any database or any daemons for managing remote machines.
  • Ansible Does not need any software installation on remote machines also.

1)Add a “Ansible” user on each machine.

2)Configure SSH private key login between machines.

3)Install Ansible:

				
					[root@controller ~] # yum install ansible -y
root@controller:~# apt install ansible -y
root@controller:~# ansible --version
ansible 2.9.6
  config file = /etc/ansible/ansible.cfg
  configured module search path = ['/root/.ansible/plugins/modules']
  ansible python module location = /usr/lib/python3/dist-packages/ansible
  executable location = /usr/bin/ansible
  python version = 3.8.5 (default, Jul 28 2020, 12:59:40) [GCC 9.3.0]
  • In the following, we will add the Ansible user on all machines:
				
					root@controller:~# useradd -m -s /bin/bash -c “Ansible User” ansible
root@controller:~# passwd ansible
root@remote-1:~# useradd -m -s /bin/bash -c “Ansible User” ansible
root@remote-1:~# passwd ansible
root@remote-2:~# useradd -m -s /bin/bash -c “Ansible User” ansible
root@remote-2:~# passwd ansible
  • Then, start to send the Controller’s Public Key to remote machines:
				
					ansible@controller:~# ssh-keygen
ansible@controller:~# ssh-copy-id ansible@remote-1
ansible@controller:~# ssh-copy-id ansible@remote-2
  • Finally just add Ansible users on all machines in the Sudoers group:
				
					root@controller:~# usermod -aG sudo ansible
root@controller:~# vi /etc/sudoers
%ansible ALL=(ALL:ALL) NOPASSWD: ALL
root@remote-1:~# usermod -aG sudo ansible
root@remote-1:~# vi /etc/sudoers
%ansible ALL=(ALL:ALL) NOPASSWD: ALL
root@remote-2:~# usermod -aG sudo ansible
root@remote-2:~# vi /etc/sudoers
%ansible ALL=(ALL:ALL) NOPASSWD: ALL