What is K3s and K8s?

K8s is a general-purpose container orchestrator, while K3s is a purpose-built container orchestrator for running Kubernetes on bare-metal servers. Kubernetes uses kubelet, an agent running on each Kubernetes node to perform a control loop of the containers running on that node. This agent runs inside the container.

What is the difference between K8s and K3s?

Major Differences Between K3s and K8s

The default is SQLite, but if you use a proper database like MySQL or PostgreSQL, it can scale very well. With the release of HELM3, this is less important, but before HELM3 was removed, the requirement for tiller K3s had custom resources for helm chart installations.

What is K3s in Kubernetes?

K3s is a lightweight Kubernetes distribution created by Rancher Labs, and it is fully certified by the Cloud Native Computing Foundation (CNCF). K3s is highly available and production-ready. It has a very small binary size and very low resource requirements.

What do you use K3s for?

K3s is a highly available, certified Kubernetes distribution designed for production workloads in unattended, resource-constrained, remote locations or inside IoT appliances.

What does K8s mean?

Kubernetes, also known as K8s, is an open-source system for automating deployment, scaling, and management of containerized applications. It groups containers that make up an application into logical units for easy management and discovery.

k3s vs k8s: What's the difference?

Why is Kubernetes called K8s?

The abbreviation K8s is derived by replacing the eight letters of “ubernete” with the digit 8. The Kubernetes Project was open-sourced by Google in 2014 after using it to run production workloads at scale for more than a decade.

Why do we need K8s?

Kubernetes provides an easy way to scale your application, compared to virtual machines. It keeps code operational and speeds up the delivery process. Kubernetes API allows automating a lot of resource management and provisioning tasks.

Why is it called K3s?

What's with the name? We wanted an installation of Kubernetes that was half the size in terms of memory footprint. Kubernetes is a 10-letter word stylized as K8s. So something half as big as Kubernetes would be a 5-letter word stylized as K3s.

Does K3s need Docker?

Using Docker as the Container Runtime

K3s includes and defaults to containerd, an industry-standard container runtime.

Should I use K3s?

K3s is a great way to get Kubernetes up and running quickly and easily, without the need for developers to have a detailed knowledge of the inner workings of Kubernetes. K3s also won't take up too many local resources, making it a great option for local Kubernetes development environments.

Can we use K3s in production?

I use k3s in production, and it is great. But as far as daily use, it is not any simpler than kuberenetes. Initial setup and clustering is a breeze with k3s. But after that, you are mostly just working with the same k3s api as a full kuberenetes setup.

Is K3s open source?

Today Rancher Labs is announcing a new open source project, k3s, which is a lightweight, easy to install Kubernetes distribution geared towards resource-constrained environments and low touch operations. Some use cases in which k3s really shines are edge, ARM, IoT, and CI.

What is helm in Kubernetes?

Helm is a Kubernetes deployment tool for automating creation, packaging, configuration, and deployment of applications and services to Kubernetes clusters. Kubernetes is a powerful container-orchestration system for application deployment.

Does K3s come with an ingress controller?

At that time I was not aware that K3s already comes with an ingress controller all up and running. The config map is a quick and dirty way of making it possible for nginx to access the html-file. It is not a clean way of hosting a website and is used just for this purpose.

What is difference between Docker and Kubernetes?

In a nutshell, Docker is a suite of software development tools for creating, sharing and running individual containers; Kubernetes is a system for operating containerized applications at scale. Think of containers as standardized packaging for microservices with all the needed application code and dependencies inside.

What does K3s remove?

Uninstalling K3s deletes the cluster data and all of the scripts. To restart the cluster with different installation options, re-run the installation script with different flags.

Where are k3s images stored?

20.2), but K3S seems to have its own embedded containerd instance stored (by default) at /var/lib/rancher/k3s/agent/containerd/ .

How do you run k3s?

Does k3s come helm?

K3s includes a Helm Controller that manages Helm charts using a HelmChart Custom Resource Definition (CRD).

What K3s stand for?

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".

What is a K3s cluster?

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.

Who makes K3s?

K3s is a fully CNCF (Cloud Native Computing Foundation) certified, compliant Kubernetes distribution by SUSE (formally Rancher Labs) that is easy to use and focused on lightness. To achieve that it is designed to be a single binary of about 45MB that completely implements the Kubernetes APIs.

Can I use Docker without Kubernetes?

The short and simple answer is yes, Docker can function without Kubernetes. You see, Docker is a standalone software designed to run containerized applications. Since container creation is part of Docker, you don't need any separate software for Docker to execute.

What is Kubernetes architecture?

Kubernetes is an architecture that offers a loosely coupled mechanism for service discovery across a cluster. A Kubernetes cluster has one or more control planes, and one or more compute nodes.

What is Kubectl in Kubernetes?

The Kubernetes command-line tool, kubectl, allows you to run commands against Kubernetes clusters. You can use kubectl to deploy applications, inspect and manage cluster resources, and view logs. For more information including a complete list of kubectl operations, see the kubectl reference documentation.