Add linux/amd64 node selector to controllers

Set nodeSelector to linux/amd64 for clusters with mixed nodes (linux, windows, amd64, arm).

cmd/tk/install.go

@@ -188,8 +188,10 @@ var kustomizationTmpl = `---
 apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 namespace: {{.Namespace}}
+
 transformers:
   - labels.yaml
+
 resources:
   - namespace.yaml
   - policies.yaml
@@ -198,6 +200,11 @@ resources:
   - {{.}}.yaml
 {{- end }}
 
+patches:
+- path: node-selector.yaml
+  target:
+    kind: Deployment
+
 patchesJson6902:
 {{- range $i, $v := .Components }}
 {{- if ne $v "notification-controller" }}
@@ -222,6 +229,19 @@ resources:
 nameSuffix: -{{.Namespace}}
 `
 
+var nodeSelectorTmpl = `---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: all
+spec:
+  template:
+    spec:
+      nodeSelector:
+        kubernetes.io/arch: amd64
+        kubernetes.io/os: linux
+`
+
 func downloadManifests(version string, tmpDir string) error {
 	ghURL := "https://github.com/fluxcd/toolkit/releases/latest/download/manifests.tar.gz"
 	if strings.HasPrefix(version, "v") {
@@ -286,6 +306,10 @@ func genInstallManifests(version string, namespace string, components []string,
 		return fmt.Errorf("generate labels failed: %w", err)
 	}
 
+	if err := utils.execTemplate(model, nodeSelectorTmpl, path.Join(tmpDir, "node-selector.yaml")); err != nil {
+		return fmt.Errorf("generate node selector failed: %w", err)
+	}
+
 	if err := utils.execTemplate(model, kustomizationTmpl, path.Join(tmpDir, "kustomization.yaml")); err != nil {
 		return fmt.Errorf("generate kustomization failed: %w", err)
 	}