refaax.blogg.se - The node was low on resource ephemeral storage

THE NODE WAS LOW ON RESOURCE EPHEMERAL STORAGE DRIVER
THE NODE WAS LOW ON RESOURCE EPHEMERAL STORAGE CODE

and increase the amount of executors as the last resource :).

THE NODE WAS LOW ON RESOURCE EPHEMERAL STORAGE CODE

I would try to optimize the spark code first before changing the deployment configuration. In my case it was an executor that failed with a similar error message. It can limit the quantity of objects that can be created in a project by type, as well as the total amount of compute resources and storage that might be consumed by resources in that project.

THE NODE WAS LOW ON RESOURCE EPHEMERAL STORAGE DRIVER

In your case the failing pod is the driver pod, but it could have been any other pods on that node. A resource quota, defined by a ResourceQuota object, provides constraints that limit aggregate resource consumption per project.

If some executor pods use up all of the ephemeral storage of a node, other pods will fail when they try to write data to ephemeral storage. Do not set this value too low, or it would affect the performance of your workloads, even if you have enough resources available in the Kubernetes cluster. The amount of ephemeral storage of a node is basically the size of the available storage in your k8s node. Pods on a same k8s node share the ephemeral storage, which (if no special configuration was used) is used by spark to store temp data of spark jobs (disk spillage and shuffle data). JavaOptions: "=/tmp =/tmp " volumeMounts: cores: 3 instances: 1 memory: "3g " labels: Version: 3.1.1 serviceAccount: spark-app executor: JavaOptions: "=/tmp =/tmp " volumeMounts: cores: 4 memory: "12g " labels: ':hadoop-hdfs-client:3.3.0 ' type: Python pythonVersion: '3 ' mode: cluster image: " " imagePullPolicy: IfNotPresent mainApplicationFile: "local:///app/src/synonyms/1_data_gathering.py " sparkVersion: "3.1.1 " restartPolicy: For more details on this issue, the first place to check is the log output of the kubelet service on the node in question. In your case the failing pod is the driver pod, but it could have been any other pods on that node. You may encounter a case where pods are being evicted from a node, and the 'describe' output reports that the kubelet is doing this to reclaim ephemeral storage. If some executor pods use up all of the ephemeral storage of a node, other pods will fail when they try to write data to ephemeral storage. Ephemeral storage is usually limited the amount of local disk on the node. The amount of ephemeral storage of a node is basically the size of the available storage in your k8s node. Name: synonym-data-gathering-scheduled namespace: spark spec:Įphemeral-storage: 1Gi suspend: true schedule: 1m " concurrencyPolicy: Allow successfulRunHistoryLimit: 5 failedRunHistoryLimit: 3 template: We are experiencing this The node was low on resource: ephemeral-storage. Kubernetes.ApiVersion: "/v1beta2 " kind: ScheduledSparkApplication metadata:.Normal Killing 3s kubelet Stopping container nginx # <- IMPORTANT! Warning Evicted 3s kubelet Pod ephemeral local storage usage exceeds the total limit of containers 4Gi. Normal Started 31s kubelet Started container nginx Normal Created 31s kubelet Created container nginx Normal Pulled 31s kubelet Successfully pulled image "nginx" in 360.098619ms Normal Pulling 31s kubelet Pulling image "nginx" Normal Scheduled 32s default-scheduler Successfully assigned default/nginx to XYZ kubectl exec -it nginx - fallocate -l 10GB /evict.imgįallocate is used to manipulate the allocated disk space for a file, either to deallocate or preallocate it.The limit that is configured for ephemeral storage is 4Gi. more local ephemeral storage than was accounted for in the nodes resource. Kubernetes.io: Docs: Concepts: Configuration: Manage resources containers: Resource ephemeral storage consumptionĪssuming that you have a following Pod manifest: apiVersion: v1 In low resource situations, containers that specify no resource requests are. If a Pod is using more ephemeral storage than you allow it to, the kubelet sets an eviction signal that triggers Pod eviction. emptyDir volumes, except tmpfs emptyDir volumes.If the kubelet is managing local ephemeral storage as a resource, then the kubelet measures storage use in:

Kubelet will monitor the usage of the ephemeral storage of your Pod and act accordingly (by evicting the Pod that exceeded the limit): Ephemeral storage consumption management The fact that the whole space ( /) is visible to you doesn't mean that the space is available/allocatable.