Allow eviction of DaemonSet pods (#1342)

* feat: evictDaemonSetPods flag for evictors

* test: evictDaemonSetPods unit and e2e

* docs: evictDaemonSetPods

pkg/api/v1alpha1/conversion.go

@@ -139,6 +139,14 @@ func V1alpha1ToInternal(
 		}
 	}
 
+	evictDaemonSetPods := false
+	if deschedulerPolicy.EvictDaemonSetPods != nil {
+		evictDaemonSetPods = *deschedulerPolicy.EvictDaemonSetPods
+		if evictDaemonSetPods {
+			klog.V(1).Info("Warning: EvictDaemonSetPods is set to True. This could cause eviction of Kubernetes DaemonSet pods.")
+		}
+	}
+
 	ignorePvcPods := false
 	if deschedulerPolicy.IgnorePVCPods != nil {
 		ignorePvcPods = *deschedulerPolicy.IgnorePVCPods
@@ -193,6 +201,7 @@ func V1alpha1ToInternal(
 							Name: defaultevictor.PluginName,
 							Args: &defaultevictor.DefaultEvictorArgs{
 								EvictLocalStoragePods:   evictLocalStoragePods,
+								EvictDaemonSetPods:      evictDaemonSetPods,
 								EvictSystemCriticalPods: evictSystemCriticalPods,
 								IgnorePvcPods:           ignorePvcPods,
 								EvictFailedBarePods:     evictBarePods,

pkg/api/v1alpha1/types.go

@@ -41,6 +41,9 @@ type DeschedulerPolicy struct {
 	// EvictSystemCriticalPods allows eviction of pods of any priority (including Kubernetes system pods)
 	EvictSystemCriticalPods *bool `json:"evictSystemCriticalPods,omitempty"`
 
+	// EvictDaemonSetPods allows pods owned by a DaemonSet resource to be evicted.
+	EvictDaemonSetPods *bool `json:"evictDaemonSetPods,omitempty"`
+
 	// IgnorePVCPods prevents pods with PVCs from being evicted.
 	IgnorePVCPods *bool `json:"ignorePvcPods,omitempty"`
 

pkg/api/v1alpha1/zz_generated.deepcopy.go

@@ -57,6 +57,11 @@ func (in *DeschedulerPolicy) DeepCopyInto(out *DeschedulerPolicy) {
 		*out = new(bool)
 		**out = **in
 	}
+	if in.EvictDaemonSetPods != nil {
+		in, out := &in.EvictDaemonSetPods, &out.EvictDaemonSetPods
+		*out = new(bool)
+		**out = **in
+	}
 	if in.IgnorePVCPods != nil {
 		in, out := &in.IgnorePVCPods, &out.IgnorePVCPods
 		*out = new(bool)