K3s Nginx Ingress: Replace Traefik with Nginx
K3s is a lightweight, certified Kubernetes distribution designed for edge computing, IoT, and CI/CD. When you install K3s, it typically comes with Traef.
K3S Articles
50 articles
K3s Production Install: Harden and Deploy Securely
K3s is designed to be lightweight, but "lightweight" doesn't mean "insecure. " Here's how to take a fresh K3s install and make it production-ready, focu.
K3s Remote Access: Configure kubeconfig for kubectl
K3s is a lightweight Kubernetes distribution that's easy to install and manage, but accessing it remotely with kubectl can be a bit tricky if you're not.
K3s ServiceLB: Expose Services Without Cloud Load Balancer
K3s's ServiceLB is a clever way to get your services accessible from outside the cluster without needing a full-blown cloud load balancer.
K3s + Longhorn: Distributed Block Storage for K3s
Longhorn's magic is that it makes your Kubernetes nodes act like a giant, resilient hard drive, even if those nodes are scattered across different machi.
K3s MetalLB: Load Balancer for Bare-Metal Clusters
MetalLB is the de facto standard for providing load balancing services to bare-metal Kubernetes clusters, and K3s is a popular choice for running Kubern.
K3s Multi-Master: Build a Highly Available Control Plane
K3s's multi-master setup isn't about redundant Kubernetes API servers; it's about distributing the state of the cluster across multiple etcd instances.
K3s Network Policies: Restrict Pod-to-Pod Traffic
K3s Network Policies let you define granular firewall rules for your Kubernetes pods, but most people think they're just for blocking traffic, when they.
K3s Node Labels and Taints: Control Pod Scheduling
K3s nodes are just machines waiting for work, and "labels" and "taints" are how you tell K3s which machines are right for which jobs.
Fix K3s Node Not Joining the Cluster
Fix K3s Node Not Joining the Cluster — practical guide covering k3s setup, configuration, and troubleshooting with real-world examples.
K3s Performance Tuning: Optimize for Edge Workloads
K3s Performance Tuning: Optimize for Edge Workloads — practical guide covering k3s setup, configuration, and troubleshooting with real-world examples.
K3s Local Path Storage: Provision PVCs Automatically
K3s can automatically provision PersistentVolumeClaims PVCs for local storage, but it doesn't create the underlying host directories for you.
K3s Private Registry: Pull Images from Internal Repos
K3s can't pull images from a private registry by default because it doesn't have any credentials to authenticate with it.
K3s Prometheus: Monitor Your Lightweight Cluster
K3s, designed for simplicity and resource efficiency, can still benefit immensely from robust monitoring, and Prometheus is the de facto standard for th.
K3s Resource Usage: How Little CPU and Memory It Needs
K3s Resource Usage: How Little CPU and Memory It Needs — practical guide covering k3s setup, configuration, and troubleshooting with real-world examples.
K3s Rootless Mode: Run Kubernetes Without Root Access
K3s in rootless mode is less about running Kubernetes without root, and more about running it as a non-privileged user, which is a fundamentally differe.
K3s SELinux: Enable Mandatory Access Control on Nodes
SELinux is preventing K3s components from communicating with each other on your nodes. Here's why it's breaking and how to fix it:
K3s Server Token: Rotate and Secure Join Credentials
K3s server tokens are short-lived secrets, and rotating them is a critical security practice to prevent unauthorized cluster access.
K3s Single Node: Run All-in-One Kubernetes Cluster
K3s is designed to be a minimalist, single-binary Kubernetes distribution that's easy to install and run, especially for single-node setups.
Fix K3s Slow Startup: Diagnose Initialization Delays
The K3s control plane components are failing to become healthy because the embedded etcd datastore is not starting up quickly enough, leading to timeout.
K3s Storage Class: Set Default StorageClass for PVCs
K3s's default StorageClass behavior is surprisingly opinionated, often leading to confusion for newcomers expecting a more hands-off approach.
K3s TLS: Add Custom SANs to API Server Certificates
K3s doesn't just let you add custom Subject Alternative Names SANs to its API server certificates; it actively tries to prevent you from doing it cleanl.
K3s Traefik: Disable or Replace the Default Ingress
K3s Traefik: Disable or Replace the Default Ingress The K3s Traefik Ingress controller is failing to start because it's trying to bind to a port that's .
K3s Uninstall: Completely Remove K3s from a Node
K3s uninstall is surprisingly complicated because the installer tries to be helpful by keeping things around, which can lead to lingering files and serv.
K3s Upgrade: Automate Node Upgrades Safely
K3s upgrades, especially on production clusters, can feel like threading a needle in a hurricane. You're not just updating software; you're orchestratin.
K3s vs Kubernetes: What's Different and What's Not
K3s vs Kubernetes: What's Different and What's Not — K3s is Kubernetes, but it's also not. Let's see K3s in action. Imagine you're setting up a small clu.
K3s Auto-Deploy Addons with Manifest Directory
K3s Auto-Deploy Addons with Manifest Directory — practical guide covering k3s setup, configuration, and troubleshooting with real-world examples.
K3s Air-Gap Install: Deploy Without Internet Access
K3s Air-Gap Install: Deploy Without Internet Access — practical guide covering k3s setup, configuration, and troubleshooting with real-world examples.
K3s API Server: Configure Custom Flags and Options
K3s's API server can be configured with custom flags, but it's a bit of a hidden gem. Let's say you're running K3s and you want to enable some specific .
K3s + ArgoCD: GitOps Deployments on Lightweight K8s
K3s, a stripped-down Kubernetes distribution, and Argo CD, a declarative GitOps continuous delivery tool, form a surprisingly powerful combination for m.
K3s on Raspberry Pi: Run Kubernetes on ARM64
K3s on Raspberry Pi: Run Kubernetes on ARM64 — practical guide covering k3s setup, configuration, and troubleshooting with real-world examples.
K3s Calico CNI: Replace Flannel with Calico Networking
Calico is actually a network policy enforcer first and a CNI second, which fundamentally changes how you think about Kubernetes networking.
K3s Cert-Manager: Automate TLS Certificate Provisioning
Cert-Manager in K3s isn't just about getting TLS certificates; it fundamentally changes how your cluster handles identity and trust for all its internal.
K3s Cilium CNI: eBPF-Powered Networking on K3s
Cilium's eBPF-powered networking on K3s is so efficient because it bypasses the kernel's traditional networking stack, executing networking logic direct.
K3s Cloud-Init: Automate Node Provisioning at Boot
K3s cloud-init is surprisingly powerful because it lets you bootstrap entirely new nodes into your K3s cluster before they even know they're supposed to.
K3s Cluster Token: Secure Node Join Authentication
K3s uses tokens to authenticate nodes joining the cluster, but there's a surprisingly simple way to make them much more secure than just a random string.
K3s Agent Nodes: Join Workers to Your Cluster
K3s worker nodes can join your cluster through a surprisingly simple mechanism that relies on a pre-shared secret and a persistent connection.
K3s Cluster Reset: Wipe and Restart from Scratch
Resetting a K3s cluster from scratch is surprisingly straightforward, but the one thing most people miss is that K3s doesn't actually delete its state f.
K3s Container Runtime: Configure containerd Options
containerd, the runtime K3s uses, is surprisingly flexible, and you can tweak its behavior without rebuilding K3s itself.
K3s containerd: Customize Container Runtime Settings
K3s lets you customize containerd's settings, but it doesn't use the standard config. toml file you'd find in a standalone containerd installation
K3s Dashboard: Deploy Kubernetes UI on Lightweight K8s
K3s, the super-lightweight Kubernetes distribution, packs a surprising punch, and its built-in dashboard is a prime example of how much utility you can .
K3s Debug: Read Logs and Diagnose Node Issues
K3s nodes are failing to join the cluster and kubectl get nodes shows them as NotReady. The k3s-agent process on the worker nodes is failing to establis.
K3s eBPF: Enable Kernel-Level Networking Features
K3s's eBPF integration unlocks powerful kernel-level networking features, but it's surprisingly easy to misconfigure the underlying kernel modules.
K3s Edge Deployment: Run Kubernetes on IoT Devices
K3s can run Kubernetes on devices with as little as 512MB RAM, making it ideal for edge computing. Imagine you've got a fleet of Raspberry Pis out in a .
K3s etcd Backup: Automate Snapshots to S3
K3s's etcd, the distributed key-value store powering your cluster's state, can be backed up to S3 using a simple, built-in mechanism.
K3s External DB: Use PostgreSQL Instead of Embedded etcd
K3s External DB: Use PostgreSQL Instead of Embedded etcd — practical guide covering k3s setup, configuration, and troubleshooting with real-world examples.
K3s Flannel Alternatives: Replace Default CNI Plugin
K3s Flannel Alternatives: Replace Default CNI Plugin — practical guide covering k3s setup, configuration, and troubleshooting with real-world examples.
K3s + Rancher Fleet: Manage Multi-Cluster GitOps
K3s + Rancher Fleet: Manage Multi-Cluster GitOps. Fleet is Rancher's way of doing GitOps across multiple Kubernetes clusters. Let's see Fleet in action
K3s HA Mode: High Availability with Embedded etcd
K3s in HA mode with embedded etcd is not a distributed database that magically synchronizes state; it's a single etcd cluster that must remain perfectly.
K3s Helm Controller: Deploy Helm Charts Automatically
K3s's Helm Controller is a surprisingly powerful tool that lets you manage Helm chart deployments directly from Kubernetes manifests, bypassing the need.