K8S-513 check root ingress for rancher

Author: dfateyev

manifest.jps

@@ -997,11 +997,26 @@ addons:
           return:
             type: warning
             message: Rancher Platforms requires 'nginx' ingress controller! The current ingress controller is '${globals.ingress-dir}'
+      - cmd[${nodes.k8sm.master.id}]: |-
+          kubectl delete -f ${baseUrl}/addons/ingress/${globals.ingress-dir}/helloworld-ingress.yaml ||:
+          kubectl delete -f ${baseUrl}/addons/helloworld.yaml ||:
+      - cmd[${nodes.k8sm.master.id}]: |-
+          http_code=$(curl -Lks -o /dev/null -w "%{http_code}" "${env.url}")
+          ret_code=$?
+          if [ ${ret_code} -ne 0 ]; then
+            echo "An error occurred while accessing the [endpoint](${env.url})"
+          elif [ ${http_code} -eq 200 ]; then
+            echo "The [endpoint](${env.url}) is already taken"
+          elif [ ${http_code} -ne 404 ]; then
+            echo "The [endpoint](${env.url}) is present and answered with HTTP code ${http_code}"
+          fi
+      - if ('${response.out}'):
+          return:
+            type: warning
+            message: Cannot deploy Rancher UI! ${response.out}.
       - cmd[${nodes.k8sm.master.id}]: |-
           helm repo add rancher-stable https://releases.rancher.com/server-charts/stable
           helm repo update
-          kubectl delete -f ${baseUrl}/addons/ingress/${globals.ingress-dir}/helloworld-ingress.yaml
-          kubectl delete -f ${baseUrl}/addons/helloworld.yaml
           helm install rancher rancher-stable/rancher --create-namespace --namespace cattle-system --set tls=external
           kubectl -n cattle-system rollout status deploy/rancher
       - message.email.send: