K3s by Rancher vs MicroK8s
A detailed comparison to help you choose between K3s by Rancher and MicroK8s.
Quick Verdict
4.1/5
K3s by Rancher
0 reviews
4.1/5
MicroK8s
0 reviews
Both K3s by Rancher and MicroK8s are equally rated at 4.1/5. K3s is a minimal certified Kubernetes distribution shipped as a single sub-70MB binary. Official minimums are 2 cores / 2GB RAM for a server node and 1 core / 512MB for an agent node. Built for edge computing, IoT, and CI/CD pipelines where full Kubernetes overhead is unnecessary. Single-command Kubernetes distribution that runs on Linux, Mac, and Windows. Installs in seconds with built-in add-ons for DNS, storage, and ingress. Designed for developers and resource-constrained environments.
K3s by Rancher Lightweight Kubernetes distribution for resource-constrained environments | MicroK8s Lightweight Kubernetes for development, edge, and IoT devices | |
|---|---|---|
| Overview | ||
| Rating | 4.1 (0 reviews) | 4.1 (0 reviews) |
| Pricing model | free | free |
| Starting price | Free | Free |
| Best for | DevOps teams and builders deploying real Kubernetes on edge devices, IoT gateways, single-board clusters, CI runners, homelabs or air-gapped sites where a lightweight single-binary distribution beats full-fat Kubernetes. | Edge and IoT deployments, local development with production parity, CI pipelines spinning disposable clusters, and small single-node production on modest hardware. |
| Specifications (entry plan) | ||
| CPU cores | 1 vCPU | — |
| RAM | 1 GB | — |
| Storage | — | — |
| Bandwidth | — | — |
| SLA uptime | — | — |
| Data-center count | — | — |
| €/vCPU/mo | €0.00 | — |
| €/GB RAM/mo | €0.00 | — |
| Features | ||
| IPv6 | ✓ | |
| DDoS protection | ||
| Automated backups | ||
| Snapshots | ||
| Managed option | ||
| Bare metal | ||
| GPU available | ||
| S3-compatible | ||
| Hourly billing | ||
| Free tier | ||
| Tags | ||
| Tags | free tieropen sourceself hostable | free tieropen sourceself hostable |
| Visit K3s by Rancher → | Visit MicroK8s → | |
K3s by Rancher
Pros
- + Free, open source, CNCF sandbox project with full Kubernetes API conformance
- + Single sub-70MB binary with bundled containerd, Flannel, CoreDNS and Traefik — cluster up in under a minute
- + Documented hardware minimums and database sizing guides instead of vague marketing claims
- + Runs on x86_64, ARMv7 and ARM64 — from Raspberry Pi agents to large cloud servers
- + Flexible datastores: embedded SQLite or etcd for HA, plus MySQL, PostgreSQL and MariaDB
Cons
- - Stripped component set — some upstream Kubernetes features and in-tree plugins are absent
- - Multi-cluster management is a Rancher/SUSE Rancher Prime feature, not part of K3s
- - You own operations: upgrades, datastore integrity, network policy and security hardening
- - Enterprise support and long-term maintenance require buying into the SUSE Rancher stack
- - Community-scale ecosystem — GitHub issues and chat, no vendor-neutral enterprise backing
MicroK8s
Pros
- + Free, Apache-licensed upstream Kubernetes with CNCF conformance — workloads are portable to any managed cluster
- + Roughly 540MB platform footprint; runs on Raspberry Pi, NUC, and Jetson-class hardware
- + One-command add-ons for DNS, ingress, storage, registry, Prometheus, Istio, and GPU enablement
- + Snap channel versioning with automatic patch updates and explicit minor upgrades
- + Built-in multi-node clustering with dqlite-backed HA and a strict-confinement channel
Cons
- - No hosted or managed control plane option; you operate everything yourself
- - Add-ons do not upgrade with the platform — disable/re-enable is the documented path
- - Large or highly custom multi-node clusters push past its opinionated design
- - Free tier support is community-only; paid Canonical support is priced for organisations
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