[ISSUE-635] Support WBT disabling (#103)

Signed-off-by: safronovD <danil_safronov@dell.com>

charts/csi-baremetal-deployment/templates/configmap/node-config.yaml

@@ -0,0 +1,29 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  namespace: {{ .Release.Namespace }}
+  name: node-config
+  labels:
+    app: csi-baremetal-node
+data:
+  wbt-config.yaml: |-
+    enable: true
+    wbt_lat_usec_value: 0
+    acceptable_volume_options:
+    # Values - FS, RAW, RAWPART
+    # Block volumes don't take any impact from WBT
+      modes:
+        - FS
+    # Name from "kubectl get sc"
+    # It is risky to change WBT settings for LVG Volumes
+      storage_classes:
+        - csi-baremetal-sc-hdd
+        - csi-baremetal-sc-ssd
+        - csi-baremetal-sc-nvme
+  wbt-acceptable_kernels.yaml: |-
+    enable_for_all: false
+    # The list of acceptable kernel versions
+    # Used only if enable_for_all is false
+    node_kernel_versions:
+      # RHEL 8
+      - 4.18.0-193.65.2.el8_2.x86_64

charts/csi-baremetal-deployment/templates/rbac/node-rbac.yaml

@@ -30,6 +30,9 @@ rules:
   - apiGroups: [""]
     resources: ["events"]
     verbs: ["get", "list", "watch", "create", "update", "patch"]
+  - apiGroups: [""]
+    resources: ["pods"]
+    verbs: ["get"]
 
 ---
 kind: ClusterRoleBinding

pkg/node/node_daemonset.go

@@ -34,6 +34,9 @@ const (
 	mountPointDirVolume   = "mountpoint-dir"
 	csiPathVolume         = "csi-path"
 	driveConfigVolume     = "drive-config"
+	nodeConfigVolume      = "node-config"
+	nodeConfigMapName     = "node-config"
+	nodeConfigPath        = "/etc/node_config"
 )
 
 // GetNodeDaemonsetPodsSelector returns a label-selector to use in the List method
@@ -91,6 +94,7 @@ func createNodeDaemonSet(csi *csibaremetalv1.Deployment, platform *PlatformDescr
 func createNodeVolumes(csi *csibaremetalv1.Deployment) []corev1.Volume {
 	directory := corev1.HostPathDirectory
 	directoryOrCreate := corev1.HostPathDirectoryOrCreate
+	configMapMode := corev1.ConfigMapVolumeSourceDefaultMode
 	unset := corev1.HostPathUnset
 	volumes := make([]corev1.Volume, 0, 14)
 	volumes = append(volumes,
@@ -130,11 +134,19 @@ func createNodeVolumes(csi *csibaremetalv1.Deployment) []corev1.Volume {
 		corev1.Volume{Name: csiPathVolume, VolumeSource: corev1.VolumeSource{
 			HostPath: &corev1.HostPathVolumeSource{Path: "/var/lib/kubelet/plugins/kubernetes.io/csi", Type: &unset},
 		}},
+		corev1.Volume{
+			Name: nodeConfigVolume,
+			VolumeSource: corev1.VolumeSource{
+				ConfigMap: &corev1.ConfigMapVolumeSource{
+					LocalObjectReference: corev1.LocalObjectReference{Name: nodeConfigMapName},
+					DefaultMode:          &configMapMode,
+					Optional:             pointer.BoolPtr(true),
+				},
+			}},
 		constant.CrashVolume,
 	)
 
 	if isLoopbackMgr(csi.Spec.Driver.Node.DriveMgr.Image.Name) {
-		configMapMode := corev1.ConfigMapVolumeSourceDefaultMode
 		volumes = append(volumes, corev1.Volume{
 			Name: driveConfigVolume,
 			VolumeSource: corev1.VolumeSource{
@@ -187,6 +199,7 @@ func createNodeContainers(csi *csibaremetalv1.Deployment, platform *PlatformDesc
 		{Name: mountPointDirVolume, MountPath: "/var/lib/kubelet/pods", MountPropagation: &bidirectional},
 		{Name: csiPathVolume, MountPath: "/var/lib/kubelet/plugins/kubernetes.io/csi", MountPropagation: &bidirectional},
 		{Name: hostRootVolume, MountPath: "/hostroot", MountPropagation: &bidirectional},
+		{Name: nodeConfigMapName, MountPath: nodeConfigPath},
 		constant.CrashMountVolume,
 	}
 	return []corev1.Container{
@@ -282,6 +295,9 @@ func createNodeContainers(csi *csibaremetalv1.Deployment, platform *PlatformDesc
 				{Name: "NAMESPACE", ValueFrom: &corev1.EnvVarSource{
 					FieldRef: &corev1.ObjectFieldSelector{APIVersion: "v1", FieldPath: "metadata.namespace"},
 				}},
+				{Name: "POD_NAME", ValueFrom: &corev1.EnvVarSource{
+					FieldRef: &corev1.ObjectFieldSelector{APIVersion: "v1", FieldPath: "metadata.name"},
+				}},
 			},
 			SecurityContext:          &corev1.SecurityContext{Privileged: pointer.BoolPtr(true)},
 			VolumeMounts:             nodeMounts,