Can I use K3s for production?

K3s is a great tool any time you want a quick and simple Kubernetes cluster, especially if you don’t care too much about customization. K3s includes packaged add-ons and sensible defaults that make it powerful right out of the box. It’s easy to install and manage, and it’s even production-ready.

Is K3s secure?

K3s is a fully conformant production-ready Kubernetes distribution with the following changes: It is packaged as a single binary. It wraps Kubernetes and other components in a single, simple launcher. It is secure by default with reasonable defaults for lightweight environments.

Is K3s better than K8s?

k8s vs k3s: Difference. K3s are not functionally different from K8s, but they have some differences that make them unique. K3s can deploy applications faster than kubernetes. Not only that, K3s can spin up clusters more quickly than K8s.

What is K3s cluster?

The K3s binary is a self-sufficient, encapsulated entity that runs almost all the components of a Kubernetes cluster, including the API server, scheduler, and controller. By default, every installation of K3s includes the control plane, kubelet, and containerd runtime which are sufficient to run a Kubernetes workload.

Who uses k3s?

Who uses k3s? 9 companies reportedly use k3s in their tech stacks, including Qubitro, Infrastructure, and loyaltyharbor.

How do I set up k3s?

Use the following steps to install k3s cluster on Ubuntu 20.04:

1. Step 1: Update Ubuntu system.
2. Step 2: Map the hostnames on each node.
3. Step 3: Install Docker on Ubuntu 20.04.
4. Step 4: Setup the Master k3s Node.
5. Step 5: Allow ports on firewall.
6. Step 6: Install k3s on worker nodes and connect them to the master.

How do I get rid of k3s?

Uninstalling. If you installed K3s with the help of the install.sh script, an uninstall script is generated during installation. The script is created on your node at /usr/local/bin/k3s-uninstall.sh (or as k3s-agent-uninstall.sh ).

Does k3s install Kubectl?

Install Script The K3s service will be configured to automatically restart after node reboots or if the process crashes or is killed. Additional utilities will be installed, including kubectl , crictl , ctr , k3s-killall.sh , and k3s-uninstall.sh.

Why is K3s called K3s?

The name “k3s” is a play on the popular shortening of the word Kubernetes to “k8s”, and the k3s GitHub repository states that the project is “5 less than k8s”. The single binary includes “everything needed to run Kubernetes, including a container runtime and any important host utilities like iptables, socat, and du”.

Is K8s short for Kubernetes?

Combining all of them, we get “K8s.” — a simple yet effective short form of the word Kubernetes.

How do you stop k3s cluster?

To stop all of the K3s containers and reset the containerd state, the k3s-killall.sh script can be used.

How do you use k3s?

What is K3s and how does it work?

K3s is packaged as a single <40MB binary that reduces the dependencies and steps needed to install, run and auto-update a production Kubernetes cluster. Both ARM64 and ARMv7 are supported with binaries and multiarch images available for both. K3s works great from something as small as a Raspberry Pi to an AWS a1.4xlarge 32GiB server. 1.

What is K3s Kubernetes?

K3s is a highly available, certified Kubernetes distribution designed for production workloads in unattended, resource-constrained, remote locations or inside IoT appliances. Simplified & Secure K3s is packaged as a single <40MB binary that reduces the dependencies and steps needed to install, run and auto-update a production Kubernetes cluster.

Can K3s run on bare-metal?

Learn how to configure K3s on bare-metal to run a Kubernetes cluster with just as much resilience and fault tolerance as a managed service. This tutorial is a follow-on from my post Kubernetes on bare-metal in 10 minutes from 2017.

How do I configure K3s to run in HA mode?

Open a terminal and write environment variables for each: Save this file as hosts.txt as you may need it again later. K3s can run in a HA mode, where a failure of a master node can be tolerated. This isn’t enough for public-facing clusters, where a stable IP address for the Kubernetes control-plane is required.