Install SpinKube on MicroK8s on Ubuntu 20.04

spinkube-on-microk8s.sh

#! /bin/bash

set -euox
shopt -s expand_aliases

SHIM_VERSION=${SHIM_VERSION:-v0.15.1}
OPERATOR_VERSION=${OPERATOR_VERSION:-0.2.0}
READINESS_TIMEOUT=${READINESS_TIMEOUT:-60s}

sudo snap install microk8s --classic

microk8s status --wait-ready
microk8s enable dns helm3 rbac

microk8s config > $HOME/.kube/config
export KUBECONFIG=$HOME/.kube/config

alias kubectl='microk8s kubectl'
alias helm='microk8s helm3'

install_cert_manager() {
  # Install cert-manager CRDs
  kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.14.3/cert-manager.crds.yaml

  # Add and update Jetstack repository
  helm repo add jetstack https://charts.jetstack.io
  helm repo update

  # Install the cert-manager Helm chart
  helm upgrade --install \
    cert-manager jetstack/cert-manager \
    --namespace cert-manager \
    --create-namespace \
    --version v1.14.3

  # Wait for cert-manager to be ready
  kubectl wait --for=condition=available --timeout=${READINESS_TIMEOUT} deployment/cert-manager-webhook -n cert-manager
}

install_kwasm_operator() {
  # Add Helm repository if not already done
  helm repo add kwasm http://kwasm.sh/kwasm-operator/

  # Install KWasm operator
  helm upgrade --install \
    kwasm-operator kwasm/kwasm-operator \
    --namespace kwasm \
    --create-namespace \
    --set "kwasmOperator.installerImage=ghcr.io/spinkube/containerd-shim-spin/node-installer:$SHIM_VERSION"

  # Provision all nodes
  kubectl annotate node --all kwasm.sh/kwasm-node=true
}

install_spin_operator() {
  # Apply basic Spin runtime class
  kubectl apply -f https://github.com/spinkube/spin-operator/releases/download/v${OPERATOR_VERSION}/spin-operator.runtime-class.yaml

  # Apply Spin CRDs
  kubectl apply -f https://github.com/spinkube/spin-operator/releases/download/v${OPERATOR_VERSION}/spin-operator.crds.yaml

  # Install Spin Operator with Helm
  helm upgrade --install spin-operator \
    --namespace spin-operator \
    --create-namespace \
    --version ${OPERATOR_VERSION} \
    --wait \
    oci://ghcr.io/spinkube/charts/spin-operator

  # Add the shim executor for the Spin operator
  kubectl apply -f https://github.com/spinkube/spin-operator/releases/download/v${OPERATOR_VERSION}/spin-operator.shim-executor.yaml

  # Wait for the Spin Operator to be ready
  kubectl wait --for=condition=available --timeout=${READINESS_TIMEOUT} deployment/spin-operator-controller-manager -n spin-operator
}

install_cert_manager
install_kwasm_operator
install_spin_operator