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Lab 2

Task 1

Update your Ansible inventory file from the lab 1 and add the web_servers group. It should contain the single host -- your VM from this list. Example:

vm-1  ansible_host=... ansible_user=... ansible_python_interpreter=...

[web_servers]
vm-1

Create a playbook file named lab02_web_server.yaml with a single play named Web server. This will set up a web server on your managed host.

This play should run on every hosts from web_servers group:

hosts: web_servers

Note: Ansible logs in to your managed host as unprivileged user ubuntu but most of the following tasks require privilege escalation (should be run as root). Easiest way to achieve that is to set the become property in the play:

become: yes

See also: https://docs.ansible.com/ansible/latest/user_guide/become.html

Please just add new files; do not delete any files from previous labs.

Task 2

Create an Ansible role named users that adds two more Linux users on your managed host and enables SSH user key based authentication for them:

  • juri (GitHub username: hudolejev)
  • roman (GitHub username: romankuchin)

Update the lab02_web_server.yaml playbook to apply this role to all your web servers.

Task 3

Create an Ansible role named nginx that installs and configures Nginx web server with a custom index page.

Use this index page, replace VM_NAME with your VM name.

Update the lab02_web_server.yaml playbook to apply this role to all your web servers.

Requirements:

Do not change the port Nginx is listening on. By default it's 80, and custom port in your public URL is already set up to forward to port 80 on your managed host.

Task 4

Check the Ansible output from the previous runs. Note the files that were changed on server: added, deleted, or updated.

List the full paths of these files in the file named lab02_changed_files.txt. Just the list of files and what happened to each of them, for example:

/path/to/foo.txt added
/path/to/bar/baz.txt changed
/path/to/xyzzy.tar.gz deleted

Note: you don't need to parse the Ansible output automatically here. Just write down the changed files.

Expected result

Your repository contains these files:

  • ansible.cfg
  • hosts
  • roles/nginx/files/index.html
  • roles/nginx/tasks/main.yaml
  • roles/users/tasks/main.yaml
  • lab02_changed_files.txt
  • lab02_web_server.yaml

Nginx is installed and configured on empty machine by running exactly this command exactly once:

ansible-playbook lab02_web_server.yaml

Users juri and roman can SSH to that machine using their SSH keys.

Running the same command again does not make any changes on managed host.

Custom web page that you have uploaded on managed host is served on your public URL.

Hints

These Ansible modules will probably be helpful:

Use standard OS package repositories to install packages: https://packages.ubuntu.com/

Check the Nginx configs in /etc/nginx/sites-enabled to find the default HTML directory location (server root).