Create NPD kubeconfig conditionally if the installation mode is standalone

Author: mauriciopoppe

cluster/gce/upgrade.sh

@@ -258,6 +258,7 @@ function prepare-node-upgrade() {
   KUBE_PROXY_TOKEN=$(get-env-val "${node_env}" "KUBE_PROXY_TOKEN")
   export KUBE_PROXY_TOKEN
   NODE_PROBLEM_DETECTOR_TOKEN=$(get-env-val "${node_env}" "NODE_PROBLEM_DETECTOR_TOKEN")
+  export NODE_PROBLEM_DETECTOR_TOKEN
   CA_CERT_BASE64=$(get-env-val "${node_env}" "CA_CERT")
   export CA_CERT_BASE64
   EXTRA_DOCKER_OPTS=$(get-env-val "${node_env}" "EXTRA_DOCKER_OPTS")

cluster/gce/windows/k8s-node-setup.psm1

@@ -1130,25 +1130,25 @@ function Verify-WorkerServices {
   $timeout = 12
   $retries = 0
   $retryDelayInSeconds = 5
-  
+
   Log-Output ("Testing node connection to API server...")
   do {
       $retries++
       $nodes_list = & "${env:NODE_DIR}\kubectl.exe" get nodes -o=custom-columns=:.metadata.name -A | Out-String
       $host_status = & "${env:NODE_DIR}\kubectl.exe" get nodes (hostname) -o=custom-columns=:.status.conditions[4].type | Out-String
       Start-Sleep $retryDelayInSeconds
   } while (((-Not $nodes_list) -or (-Not $nodes_list.contains((hostname))) -or (-Not $host_status.contains("Ready")))-and ($retries -le $timeout))
-  
+
   If (-Not $nodes_list){
       Throw ("Node: '$(hostname)' failed to connect to API server")
-  
+
   }ElseIf (-Not $nodes_list.contains((hostname))) {
       Throw ("Node: '$(hostname)' failed to join the cluster; NODES: '`n $($nodes_list)'")
 
   }ELseIf (-Not $host_status.contains("Ready")) {
       Throw ("Node: '$(hostname)' is not in Ready state")
   }
-  
+
   Log-Output ("Node: $(hostname) successfully joined cluster `n NODES: `n $($nodes_list)")
   Verify_GceMetadataServerRouteIsPresent
 
@@ -1543,10 +1543,21 @@ function DownloadAndInstall-NodeProblemDetector {
 #   CA_CERT
 #   NODE_PROBLEM_DETECTOR_TOKEN
 function Create-NodeProblemDetectorKubeConfig {
-  if (-not [string]::IsNullOrEmpty(${env:NODEPROBLEMDETECTOR_KUBECONFIG_FILE})) {
-    Create-Kubeconfig -Name 'node-problem-detector' `
-      -Path ${env:NODEPROBLEMDETECTOR_KUBECONFIG_FILE} `
-      -Token ${kube_env}['NODE_PROBLEM_DETECTOR_TOKEN']
+  if ("${env:ENABLE_NODE_PROBLEM_DETECTOR}" -eq "standalone") {
+    if (-not [string]::IsNullOrEmpty(${kube_env]['NODE_PROBLEM_DETECTOR_TOKEN']})) {
+      Log-Output "Create-NodeProblemDetectorKubeConfig using Node Problem Detector token"
+      Create-Kubeconfig -Name 'node-problem-detector' `
+        -Path ${env:NODEPROBLEMDETECTOR_KUBECONFIG_FILE} `
+        -Token ${kube_env}['NODE_PROBLEM_DETECTOR_TOKEN']
+    } elseif (Test-Path ${env:BOOTSTRAP_KUBECONFIG}) {
+      Log-Output "Create-NodeProblemDetectorKubeConfig creating kubeconfig from kubelet kubeconfig"
+      Copy-Item ${env:BOOTSTRAP_KUBECONFIG} -Destination ${env:NODEPROBLEMDETECTOR_KUBECONFIG_FILE}
+      Log-Output ("node-problem-detector bootstrap kubeconfig:`n" +
+              "$(Get-Content -Raw ${env:NODEPROBLEMDETECTOR_KUBECONFIG_FILE})")
+    } else {
+      Log-Output "Either NODE_PROBLEM_DETECTOR_TOKEN or ${env:BOOTSTRAP_KUBECONFIG} must be set"
+      exit 1
+    }
   }
 }