How deeply does Server-Side WebAssembly cover k3d?

Explains cluster creation and its Spin runtime, port, and agent-node configuration without detailing k3d internals.

K3d

k3d is a lightweight command-line tool for running local Kubernetes clusters in Docker containers.

k3d runs a local Kubernetes cluster in Docker containers. Its fast, lightweight setup makes it a practical development and testing environment before deploying Spin-based WebAssembly workloads to Kubernetes. section 8.2

For a SpinKube environment, create a cluster with a k3d image containing the containerd-shim-spin runtime. The setup exposes the cluster load balancer’s port 80 on local port 8081 and adds two agent nodes for scheduled workloads. section 8.2.1

Create a local Wasm cluster

Run the cluster-create command, then prepare Kubernetes with cert-manager, a Spin RuntimeClass, SpinKube CRDs, and the Spin operator. The custom image enables Kubernetes to launch Spin-based Wasm workloads. section 8.2.1

k3d cluster create wasm-cluster --image ghcr.io/spinframework/containerd-
➥shim-spin/k3d:v0.19.0 --port "8081:80@loadbalancer" --agents 2

Creates the wasm-cluster with the Spin-enabled k3d image, local load-balancer port mapping, and two agent nodes. section 8.2.1

How Server-Side WebAssembly covers it

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Related concepts

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