As part of the SUSE partner program, we were warmly invited to attend the SUSECON 24 in Berlin with my colleague Jean-Philippe Clapot. A two and half days event where we joined the SUSE family to learn more about their strategy and vision. “SUSE Make Choice Happens” with their Open Source Solutions extended with the PRIME support and advance offering.…
It is mid-June, and I have the opportunity with my colleague Arnaud Berbier to go to Berlin. Not for visiting the city, not for sightseeing, but for a business conference. This year, SUSECON set its location in the German capital, and as a partner, it was a kind of must for dbi services to be next to SUSE. SUSECON, the…
The cluster autoscaler brings horizontal scaling into your cluster by deploying it into the cluster to autoscale. This is described in the following blog article https://www.dbi-services.com/blog/rancher-autoscaler-enable-rke2-node-autoscaling/. It didn’t emphasize much about the user and role configuration. With Rancher, the cluster autoscaler uses a user’s API key. We will see how to configure minimal permissions by creating Rancher roles for cluster…
When testing RKE2 templates, I faced an issue with member assignments. When creating the cluster, a management cluster name is generated with the format c-m-xxxxxxxx, but the ClusterRoleTemplateBinding requires the cluster name to work. After digging into Rancher source code, I found out how to set the management cluster name. So let’s start! Force the cluster name with RKE2 templates…
In Rancher, you can preconfigure your clusters and node configuration. Then your team can start provisioning clusters, with consistency and no misconfiguration. For RKE, templates are easily comprehensible and seamlessly integrated into the Rancher UI, making it user-friendly. For RKE2, we need to make use of the RKE2 cluster template. Get started with RKE2 cluster template RKE2 cluster template For…
Introduction I came across a situation where there were no more Administrator users in Rancher. Therefore there was no access to the local (Rancher) cluster and administration of Rancher through the UI. No user could configure and reassign the Administrator role. I will show you how to retrieve the Administrator role for your Rancher users. Solution The current default admin…
In Rancher, if you make use of node drivers to provision your RKE2 nodes, you can also make use of the cluster autoscaler. In this article, I will show you how simply you can configure the autoscaler for your cluster. Rancher official documentation: RancherRKE2 official documentation: RKE2 Cluster autoscaler Cluster autoscaler is a tool that automatically adjusts the size of…
Kubernetes is the de facto standard when you think about container orchestration and scheduling, automation in software deployment, and maybe even more a whole ecosystem of tools and components orbiting around it. Since its origin in 2015, Kubernetes has been designed to manage hundreds of thousands of containers. Organized as a cluster, Kubernetes is also able to handle thousands of…
Today I stumbled across Rancher Desktop and thought I’ll give it a try. If blogged about Rancher in the past but all those blogs talked about the full blown Rancher project. Rancher Desktop brings you “Kubernetes and container management on the desktop”, so the target audience for that are the desktops of developers. Lets try how easy it really is…
This Blog is about the installation of Rancher Community on a RHEL 8 compatible Linux, for this Blog i choose AlmaLinux 8.4, but i will also work on Rocky Linux 8.4 Release Candidate. Base is an AlmaLinux / Rocky Linux minimal installation on a VMWare Host for all nodes, using the same configuration with 4vCPU and 4GB RAM. A small…
In the previous posts (Rancher, up and running, on EC2 – 1 – One node, Rancher, up and running, on EC2 – 2 – Three nodes, Rancher, up and running, on EC2 – 3 – Rancher setup, Rancher on SLES 15 as a demo environment, and Deploying a Kubernetes cluster on EC2 with Rancher) it was all about deploying a…
Once Rancher is up and running, it makes the deployment and management of Kubernetes clusters quite easy. In this post we’ll deploy a brand new cluster on top of EC2. If you want to have a simple and quick Rancher playground you can follow this post, which will give you a Rancher setup on SLES 15. If you want to…
