fix: limit node server to deploy only on Linux nodes

Author: songjiaxun

charts/latest/csi-driver-nfs/templates/csi-nfs-node.yaml

@@ -17,6 +17,8 @@ spec:
     spec:
       hostNetwork: true # original nfs connection would be broken without hostNetwork setting
       dnsPolicy: ClusterFirstWithHostNet
+      nodeSelector:
+        kubernetes.io/os: linux
       containers:
         - name: liveness-probe
           image: "{{ .Values.image.livenessProbe.repository }}:{{ .Values.image.livenessProbe.tag }}"

deploy/csi-nfs-node.yaml

@@ -17,6 +17,8 @@ spec:
     spec:
       hostNetwork: true  # original nfs connection would be broken without hostNetwork setting
       dnsPolicy: ClusterFirstWithHostNet
+      nodeSelector:
+        kubernetes.io/os: linux
       containers:
         - name: liveness-probe
           image: k8s.gcr.io/sig-storage/livenessprobe:v2.1.0

deploy/example/deployment.yaml

@@ -26,7 +26,8 @@ spec:
         labels:
             name: deployment-nfs
     spec:
-      containers:
+      nodeSelector:
+        "kubernetes.io/os": linux
       containers:
       - name: deployment-nfs
         image: mcr.microsoft.com/oss/nginx/nginx:1.17.3-alpine

test/e2e/testsuites/testsuites.go

@@ -323,6 +323,7 @@ func NewTestPod(c clientset.Interface, ns *v1.Namespace, command string) *TestPo
 				GenerateName: "nfs-volume-tester-",
 			},
 			Spec: v1.PodSpec{
+				NodeSelector: map[string]string{"kubernetes.io/os": "linux"},
 				Containers: []v1.Container{
 					{
 						Name:         "volume-tester",
@@ -446,6 +447,7 @@ func NewTestDeployment(c clientset.Interface, ns *v1.Namespace, command string,
 						Labels: map[string]string{"app": selectorValue},
 					},
 					Spec: v1.PodSpec{
+						NodeSelector: map[string]string{"kubernetes.io/os": "linux"},
 						Containers: []v1.Container{
 							{
 								Name:    "volume-tester",