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b4c92e4eed
- This patch allows to expose Resource Hardware Topology information
through CRDs in Node Feature Discovery.
- In order to do this we introduce another software component called
nfd-topology-updater in addition to the already existing software
components nfd-master and nfd-worker.
- nfd-master was enhanced to communicate with nfd-topology-updater
over gRPC followed by creation of CRs corresponding to the nodes
in the cluster exposing resource hardware topology information
of that node.
- Pin kubernetes dependency to one that include pod resource implementation
- This code is responsible for obtaining hardware information from the system
as well as pod resource information from the Pod Resource API in order to
determine the allocatable resource information for each NUMA zone. This
information along with Costs for NUMA zones (obtained by reading NUMA distances)
is gathered by nfd-topology-updater running on all the nodes
of the cluster and propagate NUMA zone costs to master in order to populate
that information in the CRs corresponding to the nodes.
- We use GHW facilities for obtaining system information like CPUs, topology,
NUMA distances etc.
- This also includes updates made to Makefile and Dockerfile and Manifests for
deploying nfd-topology-updater.
- This patch includes unit tests
- As part of the Topology Aware Scheduling work, this patch captures
the configured Topology manager scope in addition to the Topology manager policy.
Based on the value of both attribues a single string will be populated to the CRD.
The string value will be on of the following {SingleNUMANodeContainerLevel,
SingleNUMANodePodLevel, BestEffort, Restricted, None}
Co-Authored-by: Artyom Lukianov <alukiano@redhat.com>
Co-Authored-by: Francesco Romani <fromani@redhat.com>
Co-Authored-by: Talor Itzhak <titzhak@redhat.com>
Signed-off-by: Swati Sehgal <swsehgal@redhat.com>
41 lines
1.4 KiB
Go
41 lines
1.4 KiB
Go
/*
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Copyright 2021 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package podres
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import (
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"fmt"
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"log"
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"time"
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podresourcesapi "k8s.io/kubelet/pkg/apis/podresources/v1"
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"k8s.io/kubernetes/pkg/kubelet/apis/podresources"
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)
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const (
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// obtained the following values from node e2e tests : https://github.com/kubernetes/kubernetes/blob/82baa26905c94398a0d19e1b1ecf54eb8acb6029/test/e2e_node/util.go#L70
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defaultPodResourcesTimeout = 10 * time.Second
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defaultPodResourcesMaxSize = 1024 * 1024 * 16 // 16 Mb
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)
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func GetPodResClient(socketPath string) (podresourcesapi.PodResourcesListerClient, error) {
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podResourceClient, _, err := podresources.GetV1Client(socketPath, defaultPodResourcesTimeout, defaultPodResourcesMaxSize)
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if err != nil {
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return nil, fmt.Errorf("failed to create podresource client: %w", err)
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}
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log.Printf("Connected to '%q'!", socketPath)
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return podResourceClient, nil
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}
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