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21 posts tagged with "Kubernetes"

Container orchestration platform for automating application deployment, scaling, and management.

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Dual-Stack: Cilium Complementary Features

· 12 min read
Eleni Grosdouli
DevOps Consulting Engineer at Cisco Solutions GmbH

Introduction

Welcome to part 4 of the dual-stack series! In parts 1, 2, and 3, we walked through how to set up dual-stack networking on a Proxmox server using our Internet provider. We also showed you how to deploy RKE2 Kubernetes clusters and share both IPv4 and IPv6 services across them. Now, in the final part of the series, we are diving into some of the most commonly used features of Cilium for a home lab setup! Let’s get started!

title image reading "Proxmox Rancher and Cilium"

CAPI, Sveltos, Cyclops: Automated Dev Environments

· 11 min read
Eleni Grosdouli
DevOps Consulting Engineer at Cisco Solutions GmbH

Introduction

Are you ready to simplify how your Platform team spins up and down development environments while improving DevX? In this post, we show how Cluster API(CAPI), Sveltos, and Cyclops work together. They automatically create Kubernetes environments. This setup lets developers easily interact with and manage their applications. It is not magic, it is the power of Sveltos combined with the right tooling!

title image reading "Sveltos, CAPI, Cyclops Examaple"

Dual-Stack: Global Service Sharing RKE2/Cilium Proxmox

· 9 min read
Eleni Grosdouli
DevOps Consulting Engineer at Cisco Solutions GmbH

Introduction

Welcome to part 3 of the dual-stack series! In part 1 and part 2, we discovered how to enable dual-stack on a Proxmox server using our Internet provider and deploy RKE2 clusters. In today's post, we continue our journey and enable a Cilium Cluster Mesh between two RKE2 clusters. The goal is to share IPv4 and IPv6 services between the different clusters effortlessly. Let’s dive in!

title image reading "What gives people joy?"

Dual-Stack: Rancher RKE2 With Cilium on Proxmox

· 10 min read
Eleni Grosdouli
DevOps Consulting Engineer at Cisco Solutions GmbH

Introduction

Welcome to part 2 of the dual-stack series! In part 1, we covered how to enable IPv6 Prefix allocation using pfsense on Proxmox with Fritz!Box as a home router. The setup allows virtual machines in a dedicated interface to receive an IPv4 and an IPv6 address. If you have completed part 1, you can continue with the dual-stack RKE2 setup powered by Cilium.

title image reading "What gives people joy?"

Civo Navigate San Francisco 2025

· 4 min read
Eleni Grosdouli
DevOps Consulting Engineer at Cisco Solutions GmbH

Introduction

Another amazing Civo Navigate conference came to an end. In today's blog post, I wanted to share some highlights from the event. I had the chance to present Sveltos and how templating alongside Validate Health can be used to deploy and update different Kubernetes add-ons and applications effortlessly.

Below, I will dive into the key highlights from the conference, provide resources about tooling I found interesting and last but not least, provide more details about the Sveltos presentation!

title image reading "Civo Navigate San Francisco 2025"

Sveltos Latest Kubernetes Deployments Pt.2

· 6 min read
Eleni Grosdouli
DevOps Consulting Engineer at Cisco Solutions GmbH

Introduction

In Part 1 of the series, we showed how to install Sveltos on a Kubernetes management cluster. We also deployed Kyverno. After that, we used sveltosctl, the Sveltos Dashboard, and the Grafana Dashboard for observability. In today's post, we will take the next step and talk about the Dry-run feature, how to express a Sveltos ClusterProfile as a template and what the latest templateResourceRefs are.

Sveltos Latest Kubernetes Deployments Pt.1

· 8 min read
Eleni Grosdouli
DevOps Consulting Engineer at Cisco Solutions GmbH

Introduction

It is already a year since I started getting more involved with ProjectSveltos. Over the past few months, a lot of work was put into making Sveltos not only more intuitive but also easier to use, all while preserving its core features and functionality.

This post will be split into two parts, with both sections covering the latest updates along with simple deployment examples to help you get started. So, let's dive into the world of Sveltos and explore what's new!

Explore vCluster Multitenancy with GitOps

· 8 min read
Eleni Grosdouli
DevOps Consulting Engineer at Cisco Solutions GmbH

Introduction

In a previous post, we described how to install multiple virtual clusters in a Civo cloud environment with vCluster.

Today's post updates the old deployment. It shows how to interact with virtual clusters using a registered domain hosted on Cloudflare. We use a LoadBalancer service to make this work. Let's dive into it.

Rancher Install Nginx, Let’s Encrypt

· 7 min read
Eleni Grosdouli
DevOps Consulting Engineer at Cisco Solutions GmbH

Introduction

In a previous post, we described installing a Rancher server on an EKS cluster with Nginx Ingress, Let's Encrypt for TLS and Cloudflare for hosting a domain.

Today's post is an update of the old deployment which includes the latest Rancher stable Helm chart release and Proxy details hoping to fix cloud-init issues. We will provide an easy-to-follow guide outlining what's new, and why updating Rancher to a later version alongside caveats or issues faced during the deployment. For this demonstration, we will use a k3s cluster hosted on Civo Cloud.

title image reading "Rancher, Nginx, Let's Encrypt, Cloudfalre"

K8s Troubleshooting Insights: CoreDNS

· 9 min read
Eleni Grosdouli
DevOps Consulting Engineer at Cisco Solutions GmbH

Introduction

Welcome to the first post of the brand new Kubernetes Troubleshooting Insights section! The series of blog posts will share helpful information and troubleshooting tips for issues that might appear in a Kubernetes environment. The posts focus on real-life scenarios from either test, staging, or production environments.

In today’s blog post, we’ll explore an issue with CoreDNS setup on RKE2 clusters. Cilium CNI with Hubble were enabled for this setup. Let’s jump right in!

title image reading "It's not DNS"

Sveltos: Optimise Day-2 Ops, Cilium & Tetragon

· 9 min read
Eleni Grosdouli
DevOps Consulting Engineer at Cisco Solutions GmbH

Introduction

How easy is it to handle Day-2 operations with existing CI/CD tooling? Sveltos provides the ability to perform not only Day-1 operations but also helps platform administrators, tenant administrators and other operators with Day-2 operations. For example, we can use the HealthCheck and the ClusterHealthCheck features to not only watch the health of a cluster but also collect information from the managed clusters and display them in the management cluster.

In today's blog post, we will cover a way of deploying Cilium as our CNI alongside Cilium Tetragon for observability. We will then continue with a simple TracingPolicy deployment to capture socket connections and then use Sveltos to display the tracing results back to the management cluster.

The goal of the demonstration is to showcase how Sveltos can be used for different Kubernetes cluster operations based on the use case at hand.

title image reading "Sveltos Health Check"

Sveltos Tiers: Day-2 Ops Targeted Updates

· 9 min read
Eleni Grosdouli
DevOps Consulting Engineer at Cisco Solutions GmbH

Introduction

In previous posts, we outlined how Sveltos allows Platform and tenant administrators to streamline Kubernetes applications and add-on deployments to a fleet of clusters. In today's blog post, we will take a step further and demonstrate how easy it is to target and update a subset of resources targeted by multiple configurations. By multiple configurations, we refer to the Sveltos ClusterProfile or Profile Custom Resource Definitions (CRDs). The demonstration focuses on day-2 operations as we provide a way to update and/or remove resources without affecting production operations.

This functionality is called tiers. Sveltos tiers provide a solution for managing the deployment priority when resources are targeted by multiple configurations. They fit into current ClusterProfile/Profile definitions. They also set the deployment order and easily override behaviour.

Today, we will cover the case of updating the Cilium CNI in a subnet of clusters with the label set to tier:zone2 without affecting the monitoring capabilities defined in the same ClusterProfile/Profile.

title image reading "Sveltos Tiers"

OSSummit Europe 2024

· 5 min read
Eleni Grosdouli
DevOps Consulting Engineer at Cisco Solutions GmbH

Introduction

Sveltos is on tour! Another non-technical post describing my experience at the OSSummit Europe 2024. Apart from outlining my experience, the post will include useful resources on open-source projects I learned about during the event.

About Sveltos, Gianluca Mardente and I had the chance to talk at the conference and present Sveltos and how it is used to deploy and manage different Kubernetes applications and add-ons in a multi-cloud setup.

In the sections below, I will outline my highlights of the conference and what I have learned, while later on, I will describe what we presented about Sveltos and where to locate the required resources.

title image reading "OSSummit Europe 2024"

Civo Navigate Berlin 2024

· 4 min read
Eleni Grosdouli
DevOps Consulting Engineer at Cisco Solutions GmbH

Introduction

Today's post will not be as technical as previous ones however, I wanted to share my experience at the Civo Navigate in Berlin. I had the chance to talk at the conference, present Sveltos and how it can be used to painlessly deploy different Kubernetes applications and monitoring capabilities on a fleet of clusters.

Apart from that, I attended many different sessions covering relevant topics (Cloud native, Security, Thought Leadership, AI) and meet fellow enthusiasts.

In the sections below, I will outline some of my highlights and afterwards provide an introduction to the Sveltos presentation alongside the useful resources.

title image reading "Civo Navigate Berlin 2024"

OpenTofu: RKE2 Cluster with Cilium on Azure

· 12 min read
Eleni Grosdouli
DevOps Consulting Engineer at Cisco Solutions GmbH

Introduction

In a previous post, we covered how to create an RKE2 cluster on Azure Cloud using the cloud-free credits from the Rancher UI. As this is a convenient approach to get started with Rancher, in today's post, we will demonstrate how to use OpenTofu to automate the deployment.

OpenTofu is a fork of Terraform. It is an open-source project, community-driven, and managed by the Linux Foundation. If you want to get familiar with what OpenTofu is and how to get started, check out the link here.

We will also show how easy it is to customise the Cilium configuration. Plus, we will enable kube-vip for LoadBalancer services using HCL (HashiCorp Configuration Language).

title image reading "OpenTofu Rancher RKE2 Cluster on Azure"

Sveltos Templating: Cilium Cluster Mesh

· 9 min read
Eleni Grosdouli
DevOps Consulting Engineer at Cisco Solutions GmbH

Introduction

Have you ever wondered how to dynamically instantiate Kubernetes resources before deploying them to a cluster? What if I tell you there is an easy way to do it? Sveltos lets you define add-ons and applications using templates. Before deploying any resource down the managed clusters, Sveltos instantiates the templates using information gathered from the management cluster.

In a previous post, we outlined a step-by-step approach to forming a Cilium cluster mesh between two clusters. In today's post, we will demonstrate how the Sveltos templating is used to deploy a Cilium cluster mesh dynamically in one go.

title image reading "Sveltos Templating Cilium"

Rancher RKE2 Cluster on Azure

· 10 min read
Eleni Grosdouli
DevOps Consulting Engineer at Cisco Solutions GmbH

Introduction

For the last couple of days, I have been working on a new use case installing RKE2 clusters powered with Cilium by Azure Cloud. The requirement at hand was to use a Rancher instance and from there start deploying RKE2 clusters. I found that the official Rancher documentation has outdated instructions for pre-configuring Azure Cloud.

In today's blog post, we will outline the steps to set up Azure cloud-free credits for deploying RKE2 clusters with Cilium. Additionally, we will cover any limitations that come with the free credit concept.

title image reading "Rancher RKE2 Cluster on Azure"

Cilium Cluster Mesh on RKE2

· 11 min read
Eleni Grosdouli
DevOps Consulting Engineer at Cisco Solutions GmbH

Introduction

Working with on-prem RKE2 clusters, I noticed many issues in forming a Cilium cluster mesh between clusters in an automated way.

In this post, I will walk through a step-by-step process to get a Cilium cluster mesh up and running. We will cover the problems I ran into along the way. The goal is to follow a GitOps-friendly approach, with no need for the Cilium CLI. We will use Helm and kubectl for the setup.