Make metrics traefik docker configurable

.github/workflows/test_k3s.yml

@@ -44,6 +44,9 @@ jobs:
           kubectl version
           kubectl get storageclass
           kubectl get deploy,daemonset,pods --all-namespaces
+          # These options should be enabled
+          kubectl get --namespace kube-system deploy metrics-server
+          kubectl get --namespace kube-system deploy traefik
         shell: bash
 
       - name: Helm

.github/workflows/test_k3s_options.yml

@@ -0,0 +1,40 @@
+---
+name: Test
+
+# yamllint disable-line rule:truthy
+on:
+  - pull_request
+  - push
+
+jobs:
+
+  test_install_k3s:
+    runs-on: ubuntu-latest
+    name: Test K3s options
+    steps:
+      - uses: actions/checkout@v2
+      - id: k3s
+        uses: ./
+        with:
+          metrics-enabled: false
+          traefik-enabled: false
+          docker-enabled: true
+      # This action should export KUBECONFIG
+
+      - name: Kubectl
+        run: |
+          kubectl version
+          kubectl get deploy,daemonset,pods --all-namespaces
+          kubectl get --namespace kube-system deploy metrics-server || ret=$?
+          if [ $ret -eq 0 ]; then
+            echo "ERROR: metrics-server should be disabled"
+            exit 1
+          fi
+          kubectl get --namespace kube-system deploy traefik || ret=$?
+          if [ $ret -eq 0 ]; then
+            echo "ERROR: traefik should be disabled"
+            exit 1
+          fi
+          docker info
+          docker ps
+        shell: bash

README.md

@@ -9,6 +9,9 @@ Install K3s with Calico for network policies, and Helm 3.
    Versions 1.16 and later are supported.
 - `helm-version`: Helm version, see https://github.com/helm/helm/releases.
    Versions 3.1 and later are supported.
+- `metrics-enabled`: Enable or disable K3S metrics-server
+- `traefik-enabled`: Enable or disable K3S Traefik ingress
+- `docker-enabled`: Use Docker for K3s
 
 
 ## Outputs

action.yml

@@ -23,6 +23,19 @@ inputs:
     description: Helm 3 version (https://github.com/helm/helm/releases)
     required: true
     default: v3.3.4
+  metrics-enabled:
+    description: Enable or disable K3S metrics-server
+    required: true
+    default: "true"
+  traefik-enabled:
+    description: Enable or disable K3S Traefik ingress
+    required: true
+    default: "true"
+  docker-enabled:
+    description: Use Docker for K3s
+    required: true
+    default: "false"
+
 outputs:
   kubeconfig:
     description: Path to kubeconfig file
@@ -46,14 +59,25 @@ runs:
       run: |
         if [[ ${{ inputs.k3s-version }} == v1.16.* ]]; then
           k3s_disable_command=--no-deploy
+        else
+          k3s_disable_command=--disable
+        fi
+        if [[ ${{ inputs.metrics-enabled }} != true ]]; then
+          k3s_disable_metrics="${k3s_disable_command} metrics-server"
+        fi
+        if [[ ${{ inputs.traefik-enabled }} != true ]]; then
+          k3s_disable_traefik="${k3s_disable_command} traefik"
+        fi
+        if [[ ${{ inputs.docker-enabled }} == true ]]; then
+          k3s_docker=--docker
         fi
         curl -sfL https://get.k3s.io | INSTALL_K3S_VERSION=${{ inputs.k3s-version }} sh -s - \
           --write-kubeconfig-mode=644 \
-          "${k3s_disable_command:---disable}" metrics-server \
-          "${k3s_disable_command:---disable}" traefik \
+          ${k3s_disable_metrics} \
+          ${k3s_disable_traefik} \
           --disable-network-policy \
           --flannel-backend=none \
-          --docker
+          ${k3s_docker}
       shell: bash
 
     # Install calico as a CNI to enforce our NetworkPolicies. Note that canal