Rolling Update RedHat like systems - Ansible module yum
Maintaining in a consistent state your fleet of machines is one of the most time-consuming tasks of the System Administrator. I'm going to show you how to perform Rolling Update with Ansible in RedHat-like systems with some simple code: RedHat Enterprise Linux, CentOS, CentOS Stream, Fedora, ClearOS, Oracle Linux, EuroLinux, Fermi Linux, EulerOS, ROSA Linux, Springdale Linux, Asianux
How to perform the rolling updates with Ansible in RedHat-like systems?
I’m going to show you a live demo with some simple Ansible code. I’m Luca Berton and welcome to today’s episode of Ansible Pilot
Ansible rolling update packages in RedHat-like systems
Today we’re talking about rolling updates in RedHat-like systems using Ansible module yum and DNF. We already talked about these modules for installing packages but we would like to consider another use case. Both manage packages with the yum/DNF package manager.
- name string
- state string
- update_cache boolean
- bugfix boolean
- security boolean
The parameter list is pretty wide but today we are focus on these four options for our use case.
In the name could be a package or we could select all the packages of the system with the “*” star symbol.
The state for this case needs to be “latest” so we target the latest version for every package.
The “update_cache” is useful to forces the update of repository metadata before the installation, default no.
Other very interesting options are “bugfix” and “security” which allow you to update only packages marked as bugfix or security-related
Let’s jump in a real-life demo to rolling update in RedHat-like systems with Ansible Playbook.
--- - name: rolling update demo hosts: all become: true tasks: - name: ensure pkg updated yum: name: nginx state: latest update_cache: true
--- - name: rolling update demo hosts: all become: true tasks: - name: ensure system updated yum: name: "*" state: latest update_cache: true
code with ❤️ in GitHub
Now you know how to perform Rolling Update in RedHat-like systems. Subscribe to the YouTube channel, Medium, Website and Twitter to not miss the next episode of the Ansible Pilot.
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