Merge pull request #60639 from konryd/dashboardmesg

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Added dashboard banner passthrough to GCE kube-up.

**What this PR does / why we need it**: This PR adds GCE-specific provider flag for setting system-banner in the dashboard ui.

```release-note
NONE
```

cluster/addons/dashboard/dashboard-controller.yaml

@@ -42,6 +42,7 @@ spec:
         - containerPort: 8443
           protocol: TCP
         args:
+          # PLATFORM-SPECIFIC ARGS HERE
           - --auto-generate-certificates
         volumeMounts:
         - name: kubernetes-dashboard-certs

cluster/gce/config-default.sh

@@ -374,7 +374,7 @@ HEAPSTER_GCP_BASE_CPU="${HEAPSTER_GCP_BASE_CPU:-80m}"
 HEAPSTER_GCP_CPU_PER_NODE="${HEAPSTER_GCP_CPU_PER_NODE:-0.5}"
 
 # Adding to PROVIDER_VARS, since this is GCP-specific.
-PROVIDER_VARS="${PROVIDER_VARS:-} FLUENTD_GCP_VERSION FLUENTD_GCP_MEMORY_LIMIT FLUENTD_GCP_CPU_REQUEST FLUENTD_GCP_MEMORY_REQUEST HEAPSTER_GCP_BASE_MEMORY HEAPSTER_GCP_MEMORY_PER_NODE HEAPSTER_GCP_BASE_CPU HEAPSTER_GCP_CPU_PER_NODE"
+PROVIDER_VARS="${PROVIDER_VARS:-} FLUENTD_GCP_VERSION FLUENTD_GCP_MEMORY_LIMIT FLUENTD_GCP_CPU_REQUEST FLUENTD_GCP_MEMORY_REQUEST HEAPSTER_GCP_BASE_MEMORY HEAPSTER_GCP_MEMORY_PER_NODE HEAPSTER_GCP_BASE_CPU HEAPSTER_GCP_CPU_PER_NODE CUSTOM_KUBE_DASHBOARD_BANNER"
 
 # prometheus-to-sd configuration
 PROMETHEUS_TO_SD_ENDPOINT="${PROMETHEUS_TO_SD_ENDPOINT:-https://monitoring.googleapis.com/}"

cluster/gce/config-test.sh

@@ -404,7 +404,7 @@ HEAPSTER_GCP_BASE_CPU="${HEAPSTER_GCP_BASE_CPU:-80m}"
 HEAPSTER_GCP_CPU_PER_NODE="${HEAPSTER_GCP_CPU_PER_NODE:-0.5}"
 
 # Adding to PROVIDER_VARS, since this is GCP-specific.
-PROVIDER_VARS="${PROVIDER_VARS:-} FLUENTD_GCP_VERSION FLUENTD_GCP_MEMORY_LIMIT FLUENTD_GCP_CPU_REQUEST FLUENTD_GCP_MEMORY_REQUEST HEAPSTER_GCP_BASE_MEMORY HEAPSTER_GCP_MEMORY_PER_NODE HEAPSTER_GCP_BASE_CPU HEAPSTER_GCP_CPU_PER_NODE"
+PROVIDER_VARS="${PROVIDER_VARS:-} FLUENTD_GCP_VERSION FLUENTD_GCP_MEMORY_LIMIT FLUENTD_GCP_CPU_REQUEST FLUENTD_GCP_MEMORY_REQUEST HEAPSTER_GCP_BASE_MEMORY HEAPSTER_GCP_MEMORY_PER_NODE HEAPSTER_GCP_BASE_CPU HEAPSTER_GCP_CPU_PER_NODE CUSTOM_KUBE_DASHBOARD_BANNER"
 
 # prometheus-to-sd configuration
 PROMETHEUS_TO_SD_ENDPOINT="${PROMETHEUS_TO_SD_ENDPOINT:-https://monitoring.googleapis.com/}"

cluster/gce/gci/configure-helper.sh

@@ -1997,6 +1997,12 @@ function update-event-exporter {
     sed -i -e "s@{{ *event_exporter_zone *}}@${ZONE:-}@g" "$1"
 }
 
+function update-dashboard-controller {
+  if [ -n "${CUSTOM_KUBE_DASHBOARD_BANNER:-}" ]; then
+    sed -i -e "s@\( \+\)# PLATFORM-SPECIFIC ARGS HERE@\1- --system-banner=${CUSTOM_KUBE_DASHBOARD_BANNER}\n\1- --system-banner-severity=WARNING@" "$1"
+  fi
+}
+
 # Sets up the manifests of coreDNS for k8s addons.
 function setup-coredns-manifest {
   local -r coredns_file="${dst_dir}/dns/coredns.yaml"
@@ -2156,6 +2162,8 @@ EOF
   fi
   if [[ "${ENABLE_CLUSTER_UI:-}" == "true" ]]; then
     setup-addon-manifests "addons" "dashboard"
+    local -r dashboard_controller_yaml="${dst_dir}/dashboard/dashboard-controller.yaml"
+    update-dashboard-controller ${dashboard_controller_yaml}
   fi
   if [[ "${ENABLE_NODE_PROBLEM_DETECTOR:-}" == "daemonset" ]]; then
     setup-addon-manifests "addons" "node-problem-detector"