add replicaset to avoid panic

Author: konoui

README.md

@@ -24,6 +24,7 @@ It then inspects all of the volumes in the containers and looks for any volume w
 Supported workload types:
 
 * Pods
+* ReplicaSets
 * Deployments
 * StatefulSets
 * DaemonSets

main.go

@@ -158,6 +158,7 @@ func printResources(namespace corev1.Namespace, clientset *kubernetes.Clientset,
 
 	namespaceName := namespace.ObjectMeta.Name
 
+	nsReplicasets := make(map[string]*appsv1.ReplicaSet)
 	nsDeployments := make(map[string]*appsv1.Deployment)
 	nsDaemonsets := make(map[string]*appsv1.DaemonSet)
 	nsStatefulsets := make(map[string]*appsv1.StatefulSet)
@@ -197,6 +198,11 @@ func printResources(namespace corev1.Namespace, clientset *kubernetes.Clientset,
 						continue
 					}
 
+					if len(replica.OwnerReferences) == 0 {
+						nsReplicasets[replica.Name] = replica
+						continue
+					}
+
 					deployment, deployErr := clientset.AppsV1().Deployments(namespace.Name).Get(context.TODO(), replica.OwnerReferences[0].Name, metav1.GetOptions{})
 					if deployErr != nil {
 						errorList = append(errorList, deployErr)
@@ -274,6 +280,15 @@ func printResources(namespace corev1.Namespace, clientset *kubernetes.Clientset,
 			}
 		}
 	}
+
+	// loop through all the unique ReplicaSets in the namespace
+	for _, replica := range nsReplicasets {
+		found := printVolumes(w, replica.Spec.Template.Spec.Volumes, namespaceName, "replicaset", replica.Name, verbose)
+		if found {
+			sockFound = true
+		}
+	}
+
 	// loop through all the unique deployments we found for volumes
 	for _, deploy := range nsDeployments {
 		found := printVolumes(w, deploy.Spec.Template.Spec.Volumes, namespaceName, "deployment", deploy.Name, verbose)

tests/manifests/docker-volume.replicaset.yaml

@@ -0,0 +1,29 @@
+---
+apiVersion: apps/v1
+kind: ReplicaSet
+metadata:
+  name: replicaset-docker-volume
+  labels:
+    app: rs
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      app: rs
+  template:
+    metadata:
+      labels:
+        app: rs
+    spec:
+      containers:
+      - name: pause
+        image: public.ecr.aws/eks-distro/kubernetes/pause:v1.21.5-eks-1-21-8
+        ports:
+        - containerPort: 80
+        volumeMounts:
+        - name: dockersock
+          mountPath: "/var/run/docker.sock"
+      volumes:
+      - name: dockersock
+        hostPath:
+          path: /var/run/docker.sock