Cluster with kind

ingress-nginx-watch.sh

kubectl wait --namespace ingress-nginx \
  --for=condition=ready pod \
  --selector=app.kubernetes.io/component=controller \
  --timeout=90s

ingress-nginx.sh

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/provider/kind/deploy.yaml

install-dashboard.sh

helm repo add kubernetes-dashboard https://kubernetes.github.io/dashboard/
helm repo update
helm install dashboard kubernetes-dashboard/kubernetes-dashboard -n kubernetes-dashboard --create-namespace

kubectl apply -f service-account.yaml
kubectl proxy

http://localhost:8001/api/v1/namespaces/kubernetes-dashboard/services/https:dashboard-kubernetes-dashboard:https/proxy/#/login

- Get secret
kubectl -n kubernetes-dashboard get secret $(kubectl -n kubernetes-dashboard get sa/admin-user -o jsonpath="{.secrets[0].name}") -o go-template="{{.data.token | base64decode}}"

Install-kind.sh

curl -Lo ./kind https://kind.sigs.k8s.io/dl/v0.9.0/kind-linux-amd64
chmod +x ./kind
mv ./kind $HOME/.local/bin/kind

install-metrics-server.sh

wget https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml

- Edit
- --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
- --kubelet-insecure-tls


kubectl apply -f components.yaml
sleep 20
kubectl get deployment metrics-server -n kube-system
kubectl top pod --all-namespaces
kubectl top nodes

# Via helm

helm repo add stable https://charts.helm.sh/stable
helm update
helm upgrade metrics-server --install --set "args={--kubelet-insecure-tls, --kubelet-preferred-address-types=InternalIP}" stable/metrics-server --namespace kube-system
sleep 20
kubectl top pod --all-namespaces
kubectl top nodes

metalb.sh

kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/master/manifests/namespace.yaml
kubectl create secret generic -n metallb-system memberlist --from-literal=secretkey="$(openssl rand -base64 128)" 
kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/master/manifests/metallb.yaml
kubectl get pods -n metallb-system --watch
docker network inspect -f '{{.IPAM.Config}}' kind

metallb-configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  namespace: metallb-system
  name: config
data:
  config: |
    address-pools:
    - name: default
      protocol: layer2
      addresses:
      - 172.26.255.200-172.26.255.250
      
      
      
kubectl apply -f metallb-configmap.yaml

- Edit dashboard port to LoadBalance

kubectl patch svc dashboard-kubernetes-dashboard -p '{"spec": {"ports": [{"port": 443,"targetPort": 8443}],"type": "LoadBalancer"}}' -n kubernetes-dashboard
- ou crie outro service

dashboard-loadbalancer.yml

---
apiVersion: v1
kind: Service
metadata:
  name: kubernetes-dashboard-lb
  namespace: kubernetes-dashboard
  labels:
    app.kubernetes.io/component: kubernetes-dashboard
    app.kubernetes.io/instance: dashboard
    app.kubernetes.io/managed-by: Helm
    kubernetes.io/cluster-service: 'true'
  annotations:
    meta.helm.sh/release-name: dashboard
    meta.helm.sh/release-namespace: kubernetes-dashboard  
spec:
  type: LoadBalancer
  ports:
    - port: 443
      protocol: TCP
      targetPort: 8443
  selector:
    app.kubernetes.io/component: kubernetes-dashboard
    app.kubernetes.io/instance: dashboard
    app.kubernetes.io/name: kubernetes-dashboard
    
kubectl apply -f dashboard-loadbalancer.yml

- Get new ip

kubectl -n kubernetes-dashboard get svc

service-account.yaml

apiVersion: v1
kind: ServiceAccount
metadata:
  name: admin-user
  namespace: kubernetes-dashboard
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: admin-user
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- kind: ServiceAccount
  name: admin-user
  namespace: kubernetes-dashboard

Setup-clusters-with-nodes.sh

cat <<EOF | kind create cluster --name multi-node --config=-
kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
networking:
  podSubnet: "10.244.0.0/16"
  serviceSubnet: "10.96.0.0/12"
nodes:
- role: control-plane
  kubeadmConfigPatches:
  - |
    kind: InitConfiguration
    nodeRegistration:
      kubeletExtraArgs:
        node-labels: "ingress-ready=true"
  extraPortMappings:
  - containerPort: 80
    hostPort: 8080
    protocol: TCP
  - containerPort: 443
    hostPort: 8443
    protocol: TCP
- role: worker
- role: worker
- role: worker
EOF

teste-ingress.sh

kubectl apply -f https://kind.sigs.k8s.io/examples/ingress/usage.yaml

# should output "foo"
curl localhost:8080/foo
# should output "bar"
curl localhost:8080/bar

upload image to kind

kind load docker-image my-image:1.0.0 --name multi-node