Added Dashboard for kubernetes cluster

roles/dashboard/tasks/main.yml

@@ -0,0 +1,64 @@
+---
+- name: Install Metrics Server
+  command: kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml
+  environment:
+    KUBECONFIG: /etc/kubernetes/admin.conf
+
+- name: Patch Metrics Server for self-signed certs (RPi workaround)
+  command: >
+    kubectl patch deployment metrics-server -n kube-system --type='json'
+    -p='[{"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--kubelet-insecure-tls"}]'
+  environment:
+    KUBECONFIG: /etc/kubernetes/admin.conf
+
+- name: Install Kubernetes Dashboard
+  command: kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.7.0/aio/deploy/recommended.yaml
+  environment:
+    KUBECONFIG: /etc/kubernetes/admin.conf
+
+- name: Create Dashboard Admin Service Account
+  shell: |
+    cat <<EOF | kubectl apply -f -
+    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
+    EOF
+  environment:
+    KUBECONFIG: /etc/kubernetes/admin.conf
+
+- name: Create Dashboard Admin Token Secret (for K8s 1.24+)
+  shell: |
+    cat <<EOF | kubectl apply -f -
+    apiVersion: v1
+    kind: Secret
+    metadata:
+      name: admin-user-token
+      namespace: kubernetes-dashboard
+      annotations:
+        kubernetes.io/service-account.name: admin-user
+    type: kubernetes.io/service-account-token
+    EOF
+  environment:
+    KUBECONFIG: /etc/kubernetes/admin.conf
+
+- name: Change Dashboard service to NodePort
+  command: >
+    kubectl patch svc kubernetes-dashboard -n kubernetes-dashboard 
+    -p '{"spec": {"type": "NodePort", "ports": [{"port": 443, "nodePort": 30443}]}}'
+  environment:
+    KUBECONFIG: /etc/kubernetes/admin.conf