[Windows] Update Windows instructions

* Mkdir kube-proxy log path before installation as a Service
  Otherwise kube-proxy Service may not work well.
* Updated asset links from kubernetes-sigs/sig-windows-tools repo
* Retry for Get-WebFileIfNotExist

Signed-off-by: Zhecheng Li <lzhecheng@vmware.com>

docs/windows.md

@@ -87,16 +87,18 @@ $KubeletKubeconfigPath="<KubeletKubeconfigPath>"
 $KubeProxyKubeconfigPath="<KubeProxyKubeconfigPath>"
 $KubernetesHome="c:/k"
 $AntreaHome="c:/k/antrea"
+$KubeProxyLogPath="c:/var/log/kube-proxy"
 
 curl.exe -LO "https://raw.githubusercontent.com/antrea-io/antrea/${TAG}/hack/windows/Helper.psm1"
-
 Import-Module ./Helper.psm1
+
 Install-AntreaAgent -KubernetesVersion "$KubernetesVersion" -KubernetesHome "$KubernetesHome" -KubeConfig "$KubeConfig" -AntreaVersion "$TAG" -AntreaHome "$AntreaHome"
 New-KubeProxyServiceInterface
 
-mkdir "${AntreaHome}/logs"
-nssm install kube-proxy "${KubernetesHome}/kube-proxy.exe" "--proxy-mode=userspace --kubeconfig=$KubeProxyKubeconfigPath --log-dir=c:/var/log/kube-proxy --logtostderr=false --alsologtostderr"
-nssm install antrea-agent "${KubernetesHome}/antrea/bin/antrea-agent.exe" "--config=${KubernetesHome}/antrea/etc/antrea-agent.conf --logtostderr=false --log_dir=${KubernetesHome}/antrea/logs --alsologtostderr --log_file_max_size=100 --log_file_max_num=4"
+New-DirectoryIfNotExist "${AntreaHome}/logs"
+New-DirectoryIfNotExist "${KubeProxyLogPath}"
+nssm install kube-proxy "${KubernetesHome}/kube-proxy.exe" "--proxy-mode=userspace --kubeconfig=${KubeProxyKubeconfigPath} --log-dir=${KubeProxyLogPath} --logtostderr=false --alsologtostderr"
+nssm install antrea-agent "${AntreaHome}/bin/antrea-agent.exe" "--config=${AntreaHome}/etc/antrea-agent.conf --logtostderr=false --log_dir=${AntreaHome}/logs --alsologtostderr --log_file_max_size=100 --log_file_max_num=4"
 
 nssm set antrea-agent DependOnService kube-proxy ovs-vswitchd
 nssm set antrea-agent Start SERVICE_DELAYED_AUTO_START
@@ -130,7 +132,7 @@ kube-proxy version.
 
 ```bash
 # Example:
-curl -L https://github.com/kubernetes-sigs/sig-windows-tools/releases/latest/download/kube-proxy.yml | sed 's/VERSION/v1.18.0/g'  > kube-proxy.yml
+curl -L https://github.com/kubernetes-sigs/sig-windows-tools/releases/download/v0.1.5/kube-proxy.yml | sed 's/VERSION/v1.18.0/g' > kube-proxy.yml
 ```
 
 Replace the content of `run-script.ps1` in configmap named `kube-proxy-windows`
@@ -250,7 +252,7 @@ container.
 
 ```powershell
 # Example:
-curl.exe -LO https://github.com/kubernetes-sigs/sig-windows-tools/releases/latest/download/PrepareNode.ps1
+curl.exe -LO https://github.com/kubernetes-sigs/sig-windows-tools/releases/download/v0.1.5/PrepareNode.ps1
 .\PrepareNode.ps1 -KubernetesVersion v1.18.0
 ```
 

hack/windows/Helper.psm1

@@ -1,9 +1,10 @@
 function Get-WebFileIfNotExist($Path, $URL) {
-    if (Test-Path $Path) {
-        return
+    $count=0
+    while (!(Test-Path $Path) -and ($count -ne 3)) {
+        $count++
+        Write-Host "Downloading $URL to $PATH"
+        curl.exe -skLo $Path $URL
     }
-    Write-Host "Downloading $URL to $PATH"
-    curl.exe -sLo $Path $URL
 }
 
 function New-DirectoryIfNotExist($Path)
@@ -93,7 +94,7 @@ function Install-AntreaAgent {
 
     New-DirectoryIfNotExist $KubernetesHome
     # Download kubectl
-    Get-WebFileIfNotExist $kubectl  "https://$KubernetesURL/$KubernetesVersion/bin/windows/amd64/kubectl.exe"
+    Get-WebFileIfNotExist $kubectl "https://$KubernetesURL/$KubernetesVersion/bin/windows/amd64/kubectl.exe"
     # Download kube-proxy
     Get-WebFileIfNotExist $KubeProxy "https://$KubernetesURL/$KubernetesVersion/bin/windows/amd64/kube-proxy.exe"
     # Download yq

hack/windows/Prepare-Node.ps1

@@ -4,7 +4,7 @@
 
 .DESCRIPTION
 This script is only used for test to assist with joining a Windows node to a cluster.
-For production environment please follow the antrea windows installation guide and use kubernetes official script: https://github.com/kubernetes-sigs/sig-windows-tools/blob/master/kubeadm/scripts/PrepareNode.ps1
+For production environment please follow the antrea windows installation guide and use kubernetes official script: https://github.com/kubernetes-sigs/sig-windows-tools/releases/download/v0.1.5/PrepareNode.ps1
 - Downloads Kubernetes binaries (kubelet, kubeadm) at the version specified
 - Registers wins as a service in order to run kube-proxy and antrea-agent as DaemonSets.
 - Registers kubelet as an nssm service. More info on nssm: https://nssm.cc/