示例#1
0
文件: drain.go 项目: spxtr/contrib
// FastGetPodsToMove returns a list of pods that should be moved elsewhere if the node
// is drained. Raises error if there is an unreplicated pod and force option was not specified.
// Based on kubectl drain code. It makes an assumption that RC, DS, Jobs and RS were deleted
// along with their pods (no abandoned pods with dangling created-by annotation). Usefull for fast
// checks. Doesn't check i
func FastGetPodsToMove(nodeInfo *schedulercache.NodeInfo, skipNodesWithSystemPods bool, skipNodesWithLocalStorage bool) ([]*api.Pod, error) {
	return drain.GetPodsForDeletionOnNodeDrain(
		nodeInfo.Pods(),
		api.Codecs.UniversalDecoder(),
		skipNodesWithSystemPods,
		skipNodesWithLocalStorage,
		false,
		nil,
		0)
}
示例#2
0
文件: drain.go 项目: spxtr/contrib
// DetailedGetPodsForMove returns a list of pods that should be moved elsewhere if the node
// is drained. Raises error if there is an unreplicated pod and force option was not specified.
// Based on kubectl drain code. It checks whether RC, DS, Jobs and RS that created these pods
// still exist.
func DetailedGetPodsForMove(nodeInfo *schedulercache.NodeInfo, skipNodesWithSystemPods bool,
	skipNodesWithLocalStorage bool, client *unversionedclient.Client, minReplicaCount int32) ([]*api.Pod, error) {
	return drain.GetPodsForDeletionOnNodeDrain(
		nodeInfo.Pods(),
		api.Codecs.UniversalDecoder(),
		skipNodesWithSystemPods,
		skipNodesWithLocalStorage,
		true,
		client,
		minReplicaCount)
}
示例#3
0
// GetRequiredPodsForNode returns a list od pods that would appear on the node if the
// node was just created (like deamonset and manifest-run pods). It reuses kubectl
// drain command to get the list.
func GetRequiredPodsForNode(nodename string, client kube_client.Interface) ([]*apiv1.Pod, error) {

	podListResult, err := client.Core().Pods(apiv1.NamespaceAll).List(
		apiv1.ListOptions{FieldSelector: fields.SelectorFromSet(fields.Set{"spec.nodeName": nodename}).String()})
	if err != nil {
		return []*apiv1.Pod{}, err
	}
	allPods := make([]*apiv1.Pod, 0)
	for i := range podListResult.Items {
		allPods = append(allPods, &podListResult.Items[i])
	}

	podsToRemoveList, err := drain.GetPodsForDeletionOnNodeDrain(
		allPods,
		api.Codecs.UniversalDecoder(),
		true, // Force all removals.
		false,
		false,
		false, // Setting this to true requires client to be not-null.
		nil,
		0)
	if err != nil {
		return []*apiv1.Pod{}, err
	}

	podsToRemoveMap := make(map[string]struct{})
	for _, pod := range podsToRemoveList {
		podsToRemoveMap[pod.SelfLink] = struct{}{}
	}

	podsOnNewNode := make([]*apiv1.Pod, 0)
	for _, pod := range allPods {
		if _, found := podsToRemoveMap[pod.SelfLink]; !found {
			podsOnNewNode = append(podsOnNewNode, pod)
		}
	}
	return podsOnNewNode, nil
}