How to install Ansible on Fedora 32 for IT and server automation

How do I install Ansible on Fedora 32 workstation? How can I set up and test Ansible playbooks using my Fedora Linux desktop?

Introduction – Ansible is a free and open source configuration management tool. It is similar to Chef or Puppet. It works over SSH based session and does not need any software or client/agent on remote servers. One can use Ansible to manage Linux, Unix, macOS, and *BSD family of operating systems. This page shows how to install ansible and set up your first Ansible playbook on Fedora Linux 29/30/31/32.

ADVERTISEMENTS

Procedure to install Ansible on Fedora 32

  1. Update your Fedora 32 system, run: sudo dnf update
  2. Install Ansible on Fedora 32, run: sudo dnf install ansible
  3. Upgrade Ansible in Fedora 32, run: sudo dnf upgrade ansible
  4. Set up ssh key-based authentication
  5. Test Ansible

Step 1. Fedora Linux install Ansible

Type the following dnf command to update Fedora box:
$ sudo dnf update
$ dnf search ansible

Find out information about the Ansible package, run:
$ dnf info ansible
Sample outputs:

Last metadata expiration check: 0:00:41 ago on Tue Sep 29 09:29:00 2020.
Available Packages
Name         : ansible
Version      : 2.9.13
Release      : 1.fc32
Architecture : noarch
Size         : 15 M
Source       : ansible-2.9.13-1.fc32.src.rpm
Repository   : updates
Summary      : SSH-based configuration management, deployment, and task
             : execution system
URL          : http://ansible.com
License      : GPLv3+
Description  : Ansible is a radically simple model-driven configuration
             : management, multi-node deployment, and remote task execution
             : system. Ansible works over SSH and does not require any
             : software or daemons to be installed on remote nodes. Extension
             : modules can be written in any language and are transferred to
             : managed machines automatically.

Installing Ansbile on Fedora Linux

Finally, type the following dnf command:
$ sudo dnf install ansible
How to install Ansible on Fedora Linux using dnf command

Find the Ansible version

We can verify the Ansible version by running the following command:
$ ansible --version
Sample outputs:

ansible 2.9.13
  config file = /etc/ansible/ansible.cfg
  configured module search path = ['/root/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python3.8/site-packages/ansible
  executable location = /usr/bin/ansible
  python version = 3.8.5 (default, Aug 12 2020, 00:00:00) [GCC 10.2.1 20200723 (Red Hat 10.2.1-1)]

Step 2. Set up ssh keys on a Linux or Unix

First, create the key pair using the ssh-keygen command on your Fedora Linux desktop/workstation:
$ ssh-keygen -t ed25519 -C "Desktop ssh key"
Next, copy and install the public key in remote Linux/Unix/BSD servers using the ssh-copy-id command:
$ ssh-copy-id -i $HOME/.ssh/id_ed25519.pub user@ubuntu-server-ec2
$ ssh-copy-id -i $HOME/.ssh/id_ed25519.pub ec2-user@freebsd-server-lightsail
$ ssh-copy-id -i $HOME/.ssh/id_ed25519.pub vivek@centos-server-linode

Test password less log in using the ssh command:
$ ssh vivek@centos-server-linode
$ ssh ec2-user@freebsd-server-lightsail

Step 3. Test the Ansible

Sample Ansible Fedora Linux set up

Our sample Ansible setup

First create an inventory file as follows on a control machine:
$ vi inventory
Add hostnames/IP address of all remote Linux/*BSD servers:

## my vms/server hosted locally ##
[lanhosts]
192.168.2.203
192.168.2.207

## my vms/servers hosted by AWS (EC2/Lightsail) ##
[awshosts]
vm1.cyberciti.biz

## my Linode VMs ##
[linodehosts]
vm2.cyberciti.biz

Next run the uptime command command and lsb_release command on two hosts located in my LAN i.e. lanhosts group as user vivek:
$ ansible -u vivek -i inventory -m raw -a 'uptime' lanhosts
$ ansible -u vivek -i inventory -m raw -a 'lsb_release -a' lanhosts

Testing Ansible on Fedora Linux

Step 4. Writing your first Ansible playbook to manage Linux/Unix servers

First, update your inventory file to indicate user name and method to become sudo on the remote server. Here is my updated hosts file displayed with the cat command:
cat inventory
Sample config file:

[all:vars]
ansible_user='vivek'           # Username for ssh connection
ansible_become='yes'             # Run commands as root user?
ansible_become_pass='PasswordForVivekUser' # Password for sudo user i.e. ansible_user password
ansible_become_method='sudo'     # How do I become root user? Use sudo.
 
## my vms/server hosted locally ##
[lanhosts]
192.168.2.203 ansible_python_interpreter='/usr/bin/python2'
192.168.2.207 ansible_python_interpreter='/usr/bin/python3'
 
## my vms/servers hosted by AWS (EC2/Lightsail) ##
[awshosts]
vm1.cyberciti.biz
 
## my Linode VMs ##
[linodehosts]
vm2.cyberciti.biz

A playbook is nothing but scripts/commands that executed on the remote box. Create a playbook named test.yml as follows using a text editor such as vim command/nano command:
vim test.yml
Append the following code:

---
- hosts: lanhosts
 
  tasks:
          - name: Get hostname for testing purpose
            command: /bin/hostname
            changed_when: False
            register: hostname
 
          - debug: var={{ item }}
            with_items:
                    - hostname.stdout

Playbooks in Ansible use Yaml. Next, run it as follows from Fedora Linux workstation/control machine:
$ ansible-playbook -i inventory test.yml
How to run ansible playbook

A note about password stored in an insecure format

Take a close look at the following config directory in inventory file:

ansible_become_pass='PasswordForVivekUser'

It is a bad idea to store password and other sensitive information in clear text format. Let us fix this:
$ vim inventory
Find:

ansible_become_pass='PasswordForVivekUser'

Replace:

ansible_become_pass='{{ my_user_password }}'

Save and close the file. Next create a new encrypted data file named passwords.yml, run the following command:
$ ansible-vault create passwords.yml
Set the password for vault. After providing a password, the tool will start whatever editor you have defined with $EDITOR. Append the following:

my_user_password: your_password_for_ansible_user

Save and close the file. Run it as follows:
$ ansible-playbook -i inventory --ask-vault-pass --extra-vars '@passwords.yml' test.yml

Securely store password run Ansible playbooks on Fedora Linux

Click to enlarge

For more information read: How to set and use sudo password for Ansible Vault.

Adding user using the Ansible playbook

Say you need to add a new user named wwwjobs all hosts in lanhosts group. Create a new playbook named add-user.yml:

---
- hosts: lanhosts
  tasks:
          - name: Add a new user to my Linux VMs with password disabled but allow ssh log in
            user:
                    name: wwwjobs
                    comment: "Account to run jobs for our web server"
                    shell: /bin/bash
                    groups: sudo
                    append: yes
                    password: *
          - name: Upload ssh key for user wwwjobs for log in purpose
            authorized_key:
                    user: vivek
                    state: present
                    manage_dir: yes
                    key: "{{ lookup('file', '/home/vivek/.ssh/id_ed25519.pub') }}"

Run it as follows:
$ ansible-playbook -i inventory --ask-vault-pass --extra-vars '@passwords.yml' add-user.yml

How to add and remove packages

In this example, we are going to add and remove packages using the apt command for all hosts located in linodehosts group. Create a file named ubuntu-software.yml:

---
- hosts: linodehosts
  tasks:
          - name: Add a list of software on Linode VMs ...
            apt:
                    name: "{{ packages }}"
                    state: present
            vars:
                    packages:
                            - vim
                            - unzip
                            - htop
                            - atop
                            - iftop
                            - nmon
                            - sysstat
                            - iotop
                            - nicstat
                            - vnstat
          - name: Delete a list of software from Linode VMs ...
            apt:
                    name: "{{ packages }}"
                    state: absent
            vars:
                    packages:
                            - nano

Again run it as follows:
$ ansible-playbook -i inventory --ask-vault-pass --extra-vars '@passwords.yml' ubuntu-software.yml

Conclusion

And there you have it, Ansible set up and tested to manage Linux or Unix boxes. Ansible works very fast for repeated tasks such as adding users in bulk, installing software, configuring *BSD/Linux/Unix boxes. YAML takes a little time to master but easy to learn. See Ansible documentation for more info:

  • Ansible documents
  • Linux user module document
  • Debian/Ubuntu apt module document
  • How to use Ansible vault to keep sensitive data such as passwords or keys in encrypted files
🐧 Get the latest tutorials on SysAdmin, Linux/Unix, Open Source/DevOps topics:
CategoryList of Unix and Linux commands
File Managementcat
FirewallAlpine Awall CentOS 8 OpenSUSE RHEL 8 Ubuntu 16.04 Ubuntu 18.04 Ubuntu 20.04
Network Utilitiesdig host ip nmap
OpenVPNCentOS 7 CentOS 8 Debian 10 Debian 8/9 Ubuntu 18.04 Ubuntu 20.04
Package Managerapk apt
Processes Managementbg chroot cron disown fg jobs killall kill pidof pstree pwdx time
Searchinggrep whereis which
User Informationgroups id lastcomm last lid/libuser-lid logname members users whoami who w
WireGuard VPNAlpine CentOS 8 Debian 10 Firewall Ubuntu 20.04

ADVERTISEMENTS
0 comments… add one

Leave a Reply

Your email address will not be published.

Use HTML <pre>...</pre>, <code>...</code> and <kbd>...</kbd> for code samples.