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Deploying Ansible

Ansible is a powerful automation tool that can be used for managing configuration state or even performing coordinated multi-system deployments. This activity is intended to provide the steps to get started with a simple Ansible configuration.

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Path Info

Clock icon Beginner
Clock icon 30m
Clock icon Jan 21, 2019

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Table of Contents

  1. Challenge

    Install Ansible on the control host.

    Run the following commands on the control host:

    sudo yum install epel-release

    sudo yum install ansible

  2. Challenge

    Create an `ansible` user on both the control host and workstation host being sure to set a password you can remember.

    On each host, run the noted commands below. Make sure you set a password you can remember (you will need it later).

    Assuming you are logged in as cloud_user:

    sudo useradd ansible

    sudo passwd ansible

  3. Challenge

    Configure a pre-shared key for Ansible that allows the user to log in from `control` to `workstation` without a password.

    Assuming you are logged into control as cloud_user, run the following commands providing the appropirate passwords when prompted and default options otherwise:

    sudo -i -u ansible (provide cloud_user a sudo password)

    ssh-keygen (accept default options by pressing enter )

    ssh-copy-id workstation (provide ansible user a password)


  4. Challenge

    Configure the Ansible user on the workstation host so that Ansible may sudo without a password.

    1. Log into the workstation host as cloud_user and run the following commands:
      sudo visudo
    • Add text at the end of the file that is opened:
      ansible ALL=(ALL) NOPASSWD: ALL
    • Save file:
      (:wq in vim)
  5. Challenge

    Create a simple inventory in `/home/ansible/inventory` consisting of only the `workstation` host.

    1. On the control host as the ansible user run the following commands:

    vim /home/ansible/inventory (note: you may use any text editor with which you are comfortable)

    • Add the text "workstation" to the file and save using (:wq in vim).
  6. Challenge

    Write an Ansible playbook in `/home/ansible/git-setup.yml` on the control node that installs `git` on `workstation` then execute the playbook.

    1. On the control host as the ansible user run the following commands:
      vim /home/ansible/git-setup.yml (You may use any text editor with which your are comfortable.)
    • Add the following text to the file:
        --- # install git on target host
        - hosts: workstation
          become: yes
          - name: install git
              name: git
              state: latest
    • Save (:wq in vim) and quit the text editor.

    • Run ansible-playbook -i /home/ansible/inventory /home/ansible/git-setup.yml.

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