Ansible Basics
Jump to navigation
Jump to search
Installing Ansible
Enable Required Repositories
Ansible is available via the EPEL (Extra Packages for Enterprise Linux) or the official Red Hat repositories.
Enable EPEL Repository
For RHEL systems, install the EPEL repository:
sudo dnf install epel-release
Install Ansible
Once the repository is enabled, install Ansible using the package manager:
sudo dnf install ansible
Verify the Installation
After installation, verify Ansible is installed correctly:
ansible --version
You should see output similar to:
ansible [core 2.x.x] config file = /etc/ansible/ansible.cfg python version = 3.x.x
Troubleshooting
- If epel-release is not found, try enabling the codeready-builder repo or check for typos.
Creating an Ansible Inventory File
An inventory file for Ansible is a file that has a list of the hosts Ansible will interact with, their hostnames, IP addresses, and other relevant information.
An example inventory file might look like:
[web-server] (this is the host group) web-server-01 ansible_host=1.2.3.4 (each entry is a single host, with arguments/options beside) web-server-02 ansible_host=WEBSERVER_HOSTNAME
You can also format the inventory file, to manage entire host groups collectively, like this:
[file-server] file01 ansible_host=1.2.3.4 file02 ansible_host=5.6.7.8 file03 ansible_host=9.10.11.12 [file-server:vars] ansible_user=USER ansible_port=PORT# ansible_become=[true/false] (whether or not Ansible will become 'root' user) ansible_become_user=[true/false] (whether or not Ansible will become the current user) ansible_ssh_private_key=/PATH/TO/IDENTITY/FILE