Knative installation

Minikube

Container Runtime

# podman does not work!!!, use docker instead
# sudo apt-get -y install podman

source /etc/os-release
echo $UBUNTU_CODENAME

sudo apt-get update
sudo apt-get install ca-certificates curl gnupg
sudo install -m 0755 -d /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
sudo chmod a+r /etc/apt/keyrings/docker.gpg

# Add the repository to Apt sources:
echo \
  "deb [arch="$(dpkg --print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
  "$(. /etc/os-release && echo "$UBUNTU_CODENAME")" stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt-get update
sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

sudo usermod -aG docker $USER
sudo systemctl enable docker.service
sudo systemctl enable containerd.service

# use this if docker group is not present:
# newgrp docker
# groups

See:

• https://docs.docker.com/engine/install/ubuntu/
• https://github.com/kubernetes/minikube/issues/17389

Install Minikube

Mac:

curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-darwin-arm64
sudo install minikube-darwin-arm64 /usr/local/bin/minikube

Ubuntu:

curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64
sudo install minikube-linux-amd64 /usr/local/bin/minikube
minikube config set rootless true

Start Minikube

If use docker:

# Ubuntu:
# sudo usermod -aG docker $USER && newgrp docker
minikube start --cpus=4 --memory=4096 --addons=ingress --kubernetes-version=1.28.3 --insecure-registry "10.0.0.0/24"

For podman(does not work):

sudo chmod +w /etc/sudoers
# add this line to the END of the file
riguz ALL=(ALL) NOPASSWD: ALL 

sudo chmod -w /etc/sudoers
# To test:
# sudo -n -k podman version

minikube start --cpus=4 --memory=4096 --addons=ingress --container-runtime=containerd

Install Kubectl(Ubuntu):

curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl

Knative

kubectl apply -f https://github.com/knative/serving/releases/download/knative-v1.13.1/serving-crds.yaml
kubectl apply -f https://github.com/knative/serving/releases/download/knative-v1.13.1/serving-core.yaml
kubectl apply -f https://github.com/knative/eventing/releases/download/knative-v1.13.2/eventing-crds.yaml
kubectl apply -f https://github.com/knative/eventing/releases/download/knative-v1.13.2/eventing-core.yaml
kubectl apply -f https://github.com/knative/eventing/releases/download/knative-v1.13.2/in-memory-channel.yaml
kubectl apply -f https://github.com/knative/eventing/releases/download/knative-v1.13.2/mt-channel-broker.yaml
kubectl apply -f https://github.com/knative-extensions/eventing-kafka-broker/releases/download/knative-v1.13.4/eventing-kafka-controller.yaml
kubectl apply -f https://github.com/knative-extensions/eventing-kafka-broker/releases/download/knative-v1.13.4/eventing-kafka-broker.yaml
kubectl apply -f https://github.com/knative/net-kourier/releases/download/knative-v1.13.0/kourier.yaml

kubectl patch configmap/config-network \
  --namespace knative-serving \
  --type merge \
  --patch '{"data":{"ingress-class":"kourier.ingress.networking.knative.dev"}}'

kubectl apply -f https://github.com/knative/serving/releases/download/knative-v1.13.1/serving-default-domain.yaml

kubectl --namespace kourier-system get service kourier
NAME      TYPE           CLUSTER-IP   EXTERNAL-IP     PORT(S)
   AGE
kourier   LoadBalancer   10.45.2.31   35.192.171.57   80:32515/TCP,443:31010/TCP   4m31s

CLI

wget https://github.com/knative/client/releases/download/knative-v1.11.0/kn-darwin-arm64
sudo install kn-darwin-arm64 /usr/local/bin/kn
wget https://github.com/knative/func/releases/download/knative-v1.11.0/func_darwin_arm64
sudo install func_darwin_arm64 /usr/local/bin/func

# for ubuntu
wget https://github.com/knative/client/releases/download/knative-v1.13.0/kn-linux-amd64
wget https://github.com/knative/func/releases/download/knative-v1.12.1/func_linux_amd64
sudo install kn-linux-amd64 /usr/local/bin/kn
sudo install func_linux_amd64 /usr/local/bin/func

Post settings

minikube tunnel
minikube addons enable registry

kubectl port-forward --namespace kube-system service/registry 5000:80
docker run --rm -it --network=host alpine ash -c "apk add socat && socat TCP-LISTEN:5000,reuseaddr,fork TCP:$(minikube ip):5000"

kubectl -n knative-serving edit configmap config-deployment
# add
data:
  registries-skipping-tag-resolving: "localhost:5000"

Test create func

func create -l node helloworld
cd helloworld
func build
> localhost:5000/helloworld

$ func build
A registry for function images is required. For example, 'docker.io/tigerteam'.
? Registry for function images: localhost:5000/helloworld
Note: building a function the first time will take longer than subsequent builds
   🙌 Function built: localhost:5000/helloworld/helloworld:latest
$ func deploy
function up-to-date. Force rebuild with --build
   ✅ Function deployed in namespace "default" and exposed at URL:
   http://helloworld.default.127.0.0.1.sslip.io

Access from host network

kubectl port-forward --namespace kourier-system service/kourier 8080:80 --address 0.0.0.0
sudo ufw enable 8080

Then， access the service:

curl -H "Host: helloworld.default.10.111.190.244.sslip.io"  http://10.226.21.75:8080

Tekton (Not Required)

kubectl apply -f kubectl apply -f https://storage.googleapis.com/tekton-releases/pipeline/previous/v0.56.2/release.yaml
kubectl apply -f https://storage.googleapis.com/tekton-releases/triggers/previous/v0.26.1/release.yaml
kubectl apply -f https://storage.googleapis.com/tekton-releases/triggers/previous/v0.26.1/interceptors.yaml
https://github.com/tektoncd/dashboard/releases/download/v0.45.0/release-full.yaml

*.func.riguz.com 35.192.171.57
kubectl patch configmap/config-domain \
  --namespace knative-serving \
  --type merge \
  --patch '{"data":{"func.riguz.com":""}}'