k3s动态扩容

deploy-k3s.ps1

@@ -48,11 +48,78 @@ if ($LASTEXITCODE -ne 0) {
 
 Write-Host "[OK] Image imported" -ForegroundColor Green
 
+Write-Host "`n[3.5/7] Check and fix metrics-server..." -ForegroundColor Yellow
+$metricsPod = kubectl -n kube-system get pods -l k8s-app=metrics-server -o jsonpath='{.items[0].metadata.name}' 2>$null
+if ($metricsPod) {
+    $podStatus = kubectl -n kube-system get pod $metricsPod -o jsonpath='{.status.phase}' 2>$null
+    if ($podStatus -ne "Running") {
+        Write-Host "  metrics-server status: $podStatus, attempting to fix..." -ForegroundColor Yellow
+
+        $podDetail = kubectl -n kube-system describe pod $metricsPod 2>&1
+        if ($podDetail -match "ImagePullBackOff|ErrImagePull") {
+            Write-Host "  Detected image pull issue, using domestic registry..." -ForegroundColor Cyan
+
+            try {
+                docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/metrics-server:v0.6.3 2>$null
+                if ($LASTEXITCODE -eq 0) {
+                    docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/metrics-server:v0.6.3 rancher/mirrored-metrics-server:v0.8.0
+                    $msTarPath = "$PWD\metrics-server.tar"
+                    docker save -o $msTarPath rancher/mirrored-metrics-server:v0.8.0
+                    if ($LASTEXITCODE -eq 0) {
+                        docker cp $msTarPath "${k3sContainer}:/tmp/metrics-server.tar"
+                        docker exec $k3sContainer ctr -n k8s.io images import /tmp/metrics-server.tar
+                        docker exec $k3sContainer rm /tmp/metrics-server.tar
+                        Remove-Item $msTarPath -ErrorAction SilentlyContinue
+
+                        kubectl -n kube-system delete pod $metricsPod --force --grace-period=0
+                        Write-Host "  [OK] metrics-server image imported and pod restarted" -ForegroundColor Green
+                    }
+                }
+            } catch {
+                Write-Host "  [WARN] Failed to import metrics-server image" -ForegroundColor Yellow
+            }
+        } else {
+            kubectl -n kube-system delete pod $metricsPod
+            Write-Host "  [OK] metrics-server pod restarted" -ForegroundColor Green
+        }
+    } else {
+        Write-Host "  [OK] metrics-server is running" -ForegroundColor Green
+    }
+} else {
+    Write-Host "  metrics-server not found, deploying..." -ForegroundColor Yellow
+    kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml 2>$null
+}
+
+Write-Host "  Waiting for metrics-server to be ready..." -ForegroundColor Cyan
+$retryCount = 0
+$maxRetries = 40
+while ($retryCount -lt $maxRetries) {
+    $msPod = kubectl -n kube-system get pods -l k8s-app=metrics-server -o jsonpath='{.items[0].status.phase}' 2>$null
+    $msReady = kubectl -n kube-system get pods -l k8s-app=metrics-server -o jsonpath="{.items[0].status.conditions[?(@.type=='Ready')].status}" 2>$null
+
+    if ($msPod -eq "Running" -and $msReady -eq "True") {
+        Write-Host "  [OK] metrics-server is ready" -ForegroundColor Green
+        break
+    }
+
+    Start-Sleep -Seconds 5
+    $retryCount++
+    if ($retryCount % 8 -eq 0) {
+        Write-Host "  Still waiting... ($retryCount/$maxRetries) - Status: $msPod" -ForegroundColor Gray
+    }
+}
+
+if ($retryCount -eq $maxRetries) {
+    Write-Host "  [WARN] metrics-server may not be ready yet, HPA might not work immediately" -ForegroundColor Yellow
+    Write-Host "  Run '.\fix-metrics-server.ps1' manually if needed" -ForegroundColor Gray
+}
+
 Write-Host "`n[4/7] Deploy to K3s..." -ForegroundColor Yellow
 kubectl apply -f k8s/configmap.yaml
 kubectl apply -f k8s/pvc.yaml
 kubectl apply -f k8s/deployment.yaml
 kubectl apply -f k8s/service.yaml
+kubectl apply -f k8s/hpa.yaml
 Write-Host "[OK] Resources created" -ForegroundColor Green
 
 Write-Host "`n[5/7] Wait for Pod ready..." -ForegroundColor Yellow
@@ -66,11 +133,25 @@ kubectl get svc data-engine-service
 Write-Host "`n[7/7] Logs:" -ForegroundColor Yellow
 kubectl logs -l app=data-engine --tail=50
 
+Write-Host "`nHPA Status:" -ForegroundColor Cyan
+try {
+    $hpaExists = kubectl get hpa data-engine-hpa 2>&1
+    if ($LASTEXITCODE -eq 0) {
+        Write-Host $hpaExists -ForegroundColor Green
+        kubectl describe hpa data-engine-hpa | Select-String "Metrics|Conditions" -Context 0,2
+    } else {
+        Write-Host "[WARN] HPA not available yet, please check manually later" -ForegroundColor Yellow
+    }
+} catch {
+    Write-Host "[WARN] HPA status check failed, please check manually later" -ForegroundColor Yellow
+}
+
 Write-Host "`n=== Deployment Success ===" -ForegroundColor Green
 Write-Host "Access: http://<node-ip>:30301" -ForegroundColor Cyan
 Write-Host "`nCommands:" -ForegroundColor Yellow
 Write-Host "  Logs:   kubectl logs -l app=data-engine -f" -ForegroundColor White
 Write-Host "  Status: kubectl get pods -l app=data-engine" -ForegroundColor White
+Write-Host "  HPA:    kubectl get hpa data-engine-hpa -w" -ForegroundColor White
 Write-Host "  Delete: kubectl delete -f k8s/" -ForegroundColor White
 
 Write-Host "`nCleanup..." -ForegroundColor Yellow