K3s version 8. github. Jan 24, 2017 · Support matrixk3s v1. 33. 32 nodes with nodes of other versions (within the limits of what is supported by the Kubernetes Version Skew Policy). Fortunately, Rancher makes this really easy to manage with K3S. Learn more about K3s and how they work!. If the K3s cluster was imported (registered) into Rancher, Rancher will by default manage the system-upgrade-controller deployment and plans. k3s. 5 Step 5: Install Helm Helm is a Kubernetes package manager that makes it simpler for developers and administrators to organize, set up, and deploy applications and services onto Kubernetes clusters. Our release versioning reflects the version of upstream Kubernetes that is being released. It’s a simplified version of Kubernetes that retains Jul 24, 2023 · K3S Upgrade Preparation The preparation for a Kubernetes cluster depends very much on the Kubernetes platform or distribution, the cluster size, and the workloads that you host. Nov 14, 2019 · Want to downgrade your K3s version? First, uninstall the installed K3s version and then downgrade to a desired K3s version. Login to your server as your sudo-enabled user (in this tutorial, it will be sammy) using the following command if using password-based login: Sep 1, 2024 · This will be a very short but helpful post. 31 line. 2 (#10177) Create ADR for branching strategy (#10147) Bump minio-go to v7. 24 Message to Customers: This is the first of a new format of support matrices. The k3s bundled userspace has been bumped to a release based on buildroot 2024. for local development on Kubernetes. Potential Data Loss: The k3s-killall. † All “latest” tagged releases are intended for the Rancher community users to test-drive a new release and provide feedback. Place the binary in /usr/local/bin on each air-gapped node and ensure it is executable. I have written about K3S in previous articles, such as K3S introduction or K3S installation Jul 27, 2023 · To check the version of installed K3s, use the following command: k3s --version k3s version v1. 17+k3s1 This page focuses on the options that are commonly used when setting up K3s for the first time. All clusters should have been upgraded to v2 at some point over the last three years. Managing Packaged Components details how to disable packaged components, or install your own using auto-deploying manifests. Note: k3d is a community-driven project but it’s not an official Rancher (SUSE) product. If the K3s cluster is managed by Rancher, you should use the Rancher UI to manage upgrades. The project focuses on resource-constrained What is the difference between K3s Server and Agent Tokens? For more information on managing K3s join tokens, see the k3s token command documentation. 4+k3s1 This release updates Kubernetes to v1. kubectl create ns system-upgrade kubectl apply -f https Requirements K3s is very lightweight, but has some minimum requirements as outlined below. 3 days ago · Listed are all the feature and technical notes for each version of K3S. Jan 30, 2014 · K3s no longer automatically skips deploying traefik v2 if traefik v1 is present. 3 days ago · K3s is an official CNCF sandbox project that delivers a lightweight yet powerful certified Kubernetes distribution designed for production workloads across resource-restrained, remote locations or on IoT devices. The CNCF, in conjunction with Microsoft, Google, Bitnami, and Liquid Web explains how to install and configure Rancher on K3s. g. Jan 28, 2015 · For additional information about k3s releases, check out our docs. These requirements are baseline for K3s and its packaged components, and do not include resources consumed by the workload itself. version=$(timeout 5 ${DOWNLOADER} ${DOWNLOADER_OPTS} https://api. To upgrade from the older Traefik v2 to Traefik v3, please refer to the Traefik documentation. Changes since v1. 3+k3s1: Add retention flag specific for s3 (#12694) Backports for August (#12718) Bump coredns to 1. I use k3s on my VPS server because it is a very stable and simple K8s distribution. How compatible are different versions of K3s? In general, the Kubernetes version skew policy applies. Update kube-router version to v2. These “latest” tagged releases whilst covered by Rancher SLA are not generally meant for production use cases. 11-k3s1 (#11370) Bump containerd to -k3s2 to fix rewrites (#11405) This section contains advanced information describing the different ways you can run and manage K3s, as well as steps necessary to prepare the host OS for K3s use. For versions of RKE1, RKE2, k3s before 1. Traefik: If Traefik is not disabled, K3s versions v1. Version Specifics: Always verify K3s and Setting up a High-availability K3s Kubernetes Cluster for Rancher This section describes how to install a Kubernetes cluster according to the best practices for the Rancher server environment. 4+k3s1 maps to the v1. As always, we welcome and appreciate feedback from our community of users. May 3, 2024 · Kubernetes underlying system upgrades tend to be one of the more difficult components of managing a cluster. 31 and earlier will install Traefik v2, while K3s versions v1. x, please refer to the combined Rancher 2. To specify the K3s version, use the INSTALL_K3S_VERSION environment variable when running the K3s installation script. 0. This matrix is revised as of v1. sh (#11300) More backports for 2024-11 (#11309) Fix issue with loadbalancer failover to default server (#11326) Update Kubernetes to v1. To upgrade K3s from an older version you can re-run the installation script using the same configuration options you originally used when running the install script. k3s agent In this section, you'll learn how to configure the K3s agent. Jul 2, 2020 · The image: rancher/k3s-upgrade field specify the k3s-upgrade image which is responsible of upgrading k3s version via the System Upgrade Controller, it does so by replacing the k3s binary with the new version and killing the old k3s process allowing the supervisor to restart k3s with the new version. Do not follow the steps on this page unless you have disabled version management in Rancher. 3-k3s1 (#11372) Bump containerd to -k3s2 to fix rewrites (#11403) Managing Server Roles details how to set up K3s with dedicated control-plane or etcd servers. K3S provides an upgrade controller which will handle the upgrades automagically! First thing’s first, we need to install the controller and it’s associated CRDs. Dec 23, 2023 · In this step, you will install the latest version of K3s on your Ubuntu machine. 27. See Configuring Version Management for RKE2 and K3s Clusters for more Install K3s with the install script available in the K3s official installation guide. 6. 70 (#10081) Bump kine to v0. 4 Kubernetes release. io | INSTALL_K3S_VERSION=<k3s version from Standard Software Requirements> K3S_KUBECONFIG_MODE= "644" sh -s - This will take around 30 seconds. K3s includes a Helm Controller that manages installing, upgrading/reconfiguring, and uninstalling Helm charts using a HelmChart Custom Resource Definition (CRD). Without a backup, a rollback is impossible. Logging Mar 25, 2025 · Backport E2E GHA fixes (#11229) Backports for 2024-11 (#11263) Update flannel and base cni plugins version (#11249) Bump to latest k3s-root version in scripts/version. k3d makes it very easy to create single- and multi-node k3s clusters in docker, e. For example, the K3s release v1. Jan 31, 2013 · Backports for 2024-11 (#11261) Update flannel and base cni plugins version (#11247) Bump to latest k3s-root version in scripts/version. k3s claims to be a very light weight, production-ready kubernetes solution compatible with x86-64 and ARM. 3+k3s1 (fe9604ca) go version go1. sh script an uninstall… 2. 6 support matrix that contains this information in a single view. Jul 26, 2025 · This release is K3S’s first in the v1. Important Considerations Backups: Before upgrading, ensure you have a valid database or etcd snapshot from your cluster running the older version of K3s. It's now part of the Cloud Native Computing Foundation (CNCF) but was originally developed by Rancher. Note that servers also run an agent, so all flags listed on this page are also valid for use on servers. Install K3s Prerequisites Before installing K3s, choose one of the Load Images options above to prepopulate the images that K3s needs to install. 32. 1. Refer to the documentation on Advanced Options and Configuration and the server and agent command documentation for more in-depth coverage. If you installed k3s with the help of the install. 31. 24. Aug 8, 2022 · K3s is a lightweight Kubernetes distribution ideal for development use. To do this, you can copy and paste the install script into your terminal. Options are documented on this page as CLI flags, but can also be passed as configuration file options. 29. com/repos/k3s-io/k3s-selinux/releases/latest | grep browser_download_url | awk '{ print $2 }' | grep -oE "[^\/]+${rpm_target}\. Upgrading is also very easy. 12. 11. For systems without direct internet access, refer to the air gap installation instructions. Prerequisites Two The K3s binary contains a number of additional tools the help you manage your cluster. sh (#11302) More backports for 2024-11 (#11307) Fix issue with loadbalancer failover to default server (#11324) Update Kubernetes to v1. To find out which versions of Kubernetes are supported for your Rancher version, refer to the Rancher support matrix. Security tip: Never curl | bash, despite what their Quick-Start guide says. Whether you're configuring K3s to run in a container or as a native Linux service, each node running K3s should meet the following minimum requirements. 4, and fixes a number of issues. Kindly use only the “stable” tagged releases for your own production use cases Sep 29, 2023 · What is k3s? K3s is a lightweight and easy-to-install Kubernetes distribution designed for use in resource-constrained environments, edge computing, and development scenarios. k3s-io/cluster-api-k3s’s past year of commit activity Rancher needs to be installed on a supported Kubernetes version. Easy to install, half the memory, all in a binary of less than 100 MB. Despite its diminutive appearance, K3s includes everything you need to run a production-ready Kubernetes cluster. Learn how to download, run and use K3s on x86_64, ARMv7 and ARM64 platforms. rpm") Jan 30, 2014 · Lightweight Kubernetes. In my case, my private cluster consists of 3 nodes and 2 applications and is based on k3S, a lightweight distribution. See the Configuration File documentation for more information on using YAML configuration files. For example: curl -sfL https://get. For more details on what’s new, see the Kubernetes release notes. 0 (#12741) Fix cert startup check events (#12746) Emit certs OK event on You can upgrade K3s by using the installation script, or by manually installing the binary of the desired version. K3s ships as a single binary with a filesize under 50 MB. Jan 30, 2014 · Lightweight Kubernetes. In short, servers can be newer than agents, but agents cannot be newer than servers. sh script forcefully terminates K3s processes and may result in data loss if applications are not properly shut down. The following figure shows you the visualised product life cycle of K3s. noarch\. Release v1. 3 (#12728) Bump metrics-server to v0. curl Lightweight certified Kubernetes with Rancher K3s is an official CNCF sandbox project that delivers a lightweight yet powerful certified Kubernetes distribution designed for production workloads across resource-restrained, remote locations or on IoT devices. When used with Rancher, K3s is simple to install, lightweight yet high availability Kubernetes distribution that can be easily managed Lightweight Kubernetes. 20. 32 and later will install Traefik v3. RKE1, RKE2 & k3s now have dedicated pages for each version. Contribute to k3s-io/k3s development by creating an account on GitHub. 3, addressing several CVEs in busybox and coreutils. 9, and fixes a number of issues. Until then, you must set --kube-apiserver-arg=feature-gates=AuthorizeNodeWithSelectors=false on server nodes, if you want to mix K3s v1. For more details on what's new, see the Kubernetes release notes. To upgrade to the latest stable release I simply run the command I originally used to install K3s. 02. Download binary and script Download the K3s binary from the releases page, matching the same version used to get the airgap images. 9 to fix pagination (#10082) Jan 30, 2014 · Lightweight Kubernetes. This release updates Kubernetes to v1. Jan 30, 2014 · Check out our documentation for guidance on how to get started or to dive deep into K3s. Please feel free to: K3s is a certified Kubernetes distribution that simplifies and secures installation and updates of production clusters in remote or constrained locations. eosbv mub7l6 eb brved flv5 fgg c5kcih lye94akn rx1x tdoj9l