mirror of
https://github.com/kubernetes-sigs/node-feature-discovery.git
synced 2025-03-07 01:07:05 +00:00
39be798472
Refactor NFD into a simple server-client system. Labeling is now done by a separate 'nfd-master' server. It is a simple service with small codebase, designed for easy isolation. The feature discovery part is implemented in a 'nfd-worker' client which sends labeling requests to nfd-server, thus, requiring no access/permissions to the Kubernetes API itself. Client-server communication is implemented by using gRPC. The protocol currently consists of only one request, i.e. the labeling request. The spec templates are converted to the new scheme. The nfd-master server can be deployed using the nfd-master.yaml.template which now also contains the necessary RBAC configuration. NFD workers can be deployed by using the nfd-worker-daemonset.yaml.template or nfd-worker-job.yaml.template (most easily used with the label-nodes.sh script). Only nfd-worker currently support config file or options. The (default) NFD config file is renamed to nfd-worker.conf.
50 lines
1.7 KiB
Go
50 lines
1.7 KiB
Go
/*
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Copyright 2019 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 apihelper
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import (
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api "k8s.io/api/core/v1"
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k8sclient "k8s.io/client-go/kubernetes"
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)
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// APIHelpers represents a set of API helpers for Kubernetes
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type APIHelpers interface {
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// GetClient returns a client
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GetClient() (*k8sclient.Clientset, error)
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// GetNode returns the Kubernetes node on which this container is running.
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GetNode(*k8sclient.Clientset, string) (*api.Node, error)
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// RemoveLabelsWithPrefix removes labels from the supplied node that contain the
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// search string provided. In order to publish the changes, the node must
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// subsequently be updated via the API server using the client library.
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RemoveLabelsWithPrefix(*api.Node, string)
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// RemoveLabels removes NFD labels from a node object
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RemoveLabels(*api.Node, []string)
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// AddLabels adds new NFD labels to the node object.
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// In order to publish the labels, the node must be subsequently updated via the
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// API server using the client library.
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AddLabels(*api.Node, map[string]string)
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// Add annotations
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AddAnnotations(*api.Node, map[string]string)
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// UpdateNode updates the node via the API server using a client.
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UpdateNode(*k8sclient.Clientset, *api.Node) error
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}
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