minikube

install-minicube.sh

#!/usr/bin/env bash

set -e

[ -d configs ] || mkdir configs

MK=$(command -v minikube)

minikube_start() {

    ${MK} start --driver=kvm2 --cpus='4' --memory='10G' # --addons=ingress,metrics-server,dashboard,metallb-system

    INSATNCE_IP=$(sudo virsh domifaddr minikube | grep "192.168.122" | awk -F ' ' '{print $4}' | cut -d "/" -f1)

    echo -e "\n => instance ip: ${INSATNCE_IP}\n"
}

minikube_delete() {

    ${MK} delete --all
}

addon_metallb() {
    ${MK} addons enable metallb

    METALLB_IP_PREFIX_RANGE=$(sudo virsh domifaddr minikube | grep "192.168.122" | awk -F ' ' '{print $4}' | cut -d "." -f1-3)
    METALLB_IP_START=${METALLB_IP_PREFIX_RANGE}.10
    METALLB_IP_END=${METALLB_IP_PREFIX_RANGE}.20

    cat > configs/metallb.yaml << EOF
---
apiVersion: v1
kind: ConfigMap

metadata:
  name: config
  namespace: metallb-system

data:
  config: |
    address-pools:
    - name: default
      protocol: layer2
      addresses:
      - ${METALLB_IP_START}-${METALLB_IP_END}
EOF

    kubectl apply --namespace metallb-system --filename configs/metallb.yaml
    kubectl get --namespace metallb-system  configmap/config --output yaml
}

addon_dashboard() {

    ${MK} addons enable dashboard

    cat > configs/dashboard.yaml << EOF
---
apiVersion: v1
kind: Service

metadata:
  name: loadbalancer
  namespace: kubernetes-dashboard

spec:
  selector:
    k8s-app: kubernetes-dashboard
  type: LoadBalancer
  ports:
    - port: 80
      protocol: TCP
      targetPort: 80
EOF

    kubectl apply --namespace kubernetes-dashboard --filename configs/dashboard.yaml
    kubectl get --namespace kubernetes-dashboard --no-headers services
    kubectl get --namespace kubernetes-dashboard services --selector k8s-app=kubernetes-dashboard
}

addon_metrics() {

    ${MK} addons enable metrics-server
}

run() {
    minikube_start
    addon_metallb
    addon_dashboard
    addon_metrics
}

run

update

#!/usr/bin/env bash

set -e

LANG=C

[ -d configs ] || mkdir configs

MK=$(command -v minikube)

minikube_config() {
    ${MK} config set driver kvm2
    ${MK} config set cpus 4
    ${MK} config set memory 10G
    ${MK} config set disk-size 20G
}

minikube_start() {

    ${MK} start --driver=kvm2 --cpus='4' --memory='10G' # --addons=ingress,metrics-server,dashboard,metallb-system

    minikube_ips

    echo -e "\n"
    echo -e " => instance ip: ${INSTANCE_IP}"
    echo -e " => minikube ip: ${MINIKUBE_IP}"
    echo -e "\n"
}

minikube_ips(){

    MINIKUBE_IP=$(${MK} ip)
    INSTANCE_IP=$(sudo virsh domifaddr minikube | grep "192.168.122" | awk -F ' ' '{print $4}' | cut -d "/" -f1)
    INSTANCE_IP_PREFIX=$(sudo virsh domifaddr minikube | grep ${MINIKUBE_IP} | awk -F ' ' '{print $4}' | cut -d "." -f1-3)

    export MINIKUBE_IP
    export INSTANCE_IP
    export INSTANCE_IP_PREFIX
}

minikube_delete() {

    ${MK} delete --all
}

addon_metallb() {

    echo "addon: metallb"

    minikube_ips

    ${MK} addons enable metallb

    METALLB_IP_START=${INSTANCE_IP_PREFIX}.10
    METALLB_IP_END=${INSTANCE_IP_PREFIX}.20
    echo -e "\n"
    echo " START: ${METALLB_IP_START}"
    echo " End  : ${METALLB_IP_END}"
    echo -e "\n"

    cat > configs/metallb.yaml << EOF
---
apiVersion: v1
kind: ConfigMap

metadata:
  name: config
  namespace: metallb-system

data:
  config: |
    address-pools:
    - name: default
      protocol: layer2
      addresses:
      - ${METALLB_IP_START}-${METALLB_IP_END}
EOF

    kubectl apply --namespace metallb-system --filename configs/metallb.yaml
    kubectl get --namespace metallb-system  configmap/config --output yaml
    echo -e "\n"
}

addon_dashboard() {

    echo "addon: dashboard"

    ${MK} addons enable dashboard

    cat > configs/dashboard.yaml << EOF
---
apiVersion: v1
kind: Service

metadata:
  name: loadbalancer
  namespace: kubernetes-dashboard

spec:
  selector:
    k8s-app: kubernetes-dashboard
  type: LoadBalancer
  ports:
    - port: 8080
      protocol: TCP
      targetPort: 9090
EOF

    kubectl apply --namespace kubernetes-dashboard --filename configs/dashboard.yaml
    kubectl get --namespace kubernetes-dashboard services # --no-headers
    kubectl get --namespace kubernetes-dashboard services --selector k8s-app=kubernetes-dashboard
    echo -e "\n"
}

addon_metrics() {

    echo "addon: metrics-server"

    ${MK} addons enable metrics-server

    echo -e "\n"
}

run() {
    if [ $0 = "./minikube_config" ]
    then
        minikube_config
    elif [ $0 = "./minikube_start" ]
    then
        minikube_start
    elif [ $0 = "./minikube_addon" ]
    then
        addon_metallb
        addon_dashboard
        addon_metrics
    elif [ $0 = "./minikube_delete" ]
    then
        minikube_delete
    else
        echo "unknown call ''${0}'"
        ln -s run.sh minikube_delete
        ln -s run.sh minikube_start
        ln -s run.sh minikube_config
        ln -s run.sh minikube_addon
        exit 1
    fi
}

run

Der TargetPort für das Dashboard ist nicht 8080 wie angenommen, sondern 9090.
Das habe ich dann nur beim sinnbefreiten herumstochern und kubectl -n kubernetes-dashboard describe deployments.apps kubernetes-dashboard herausgefunden.