From 64438cc0de02630030f60e6522ae1ae6706ee2af Mon Sep 17 00:00:00 2001 From: tizhou86 Date: Wed, 1 Jul 2020 11:54:02 +0800 Subject: [PATCH] Init commit for gpu sharing device. Signed-off-by: tizhou86 --- .gitignore | 131 +++++ LICENSE | 1 + Makefile | 63 +++ Makefile.def | 11 + README.md | 163 +++++- docker/amd64/Dockerfile.centos7 | 43 ++ docker/amd64/Dockerfile.ubuntu16.04 | 43 ++ go.mod | 42 ++ go.sum | 757 +++++++++++++++++++++++++++ main.go | 108 ++++ pkg/filewatcher/filewatcher.go | 39 ++ pkg/plugin/interface.go | 29 + pkg/plugin/nvidia/const.go | 38 ++ pkg/plugin/nvidia/kube_interactor.go | 116 ++++ pkg/plugin/nvidia/nvidia.go | 148 ++++++ pkg/plugin/nvidia/server.go | 364 +++++++++++++ pkg/plugin/nvidia/utils.go | 220 ++++++++ pod1.yml | 14 + volcano-device-plugin.yml | 66 +++ 19 files changed, 2394 insertions(+), 2 deletions(-) create mode 100644 .gitignore create mode 100644 Makefile create mode 100644 Makefile.def create mode 100644 docker/amd64/Dockerfile.centos7 create mode 100644 docker/amd64/Dockerfile.ubuntu16.04 create mode 100644 go.mod create mode 100644 go.sum create mode 100644 main.go create mode 100644 pkg/filewatcher/filewatcher.go create mode 100644 pkg/plugin/interface.go create mode 100644 pkg/plugin/nvidia/const.go create mode 100644 pkg/plugin/nvidia/kube_interactor.go create mode 100644 pkg/plugin/nvidia/nvidia.go create mode 100644 pkg/plugin/nvidia/server.go create mode 100644 pkg/plugin/nvidia/utils.go create mode 100644 pod1.yml create mode 100644 volcano-device-plugin.yml diff --git a/.gitignore b/.gitignore new file mode 100644 index 000000000..9c3071d9b --- /dev/null +++ b/.gitignore @@ -0,0 +1,131 @@ +# OSX leaves these everywhere on SMB shares +._* + +# OSX trash +.DS_Store + +# Eclipse files +.classpath +.project +.settings/** + +# Files generated by JetBrains IDEs, e.g. IntelliJ IDEA +.idea/ +*.iml + +# Vscode files +.vscode + +# This is where the result of the go build goes +/output*/ +/_output*/ +/_output + +# Emacs save files +*~ +\#*\# +.\#* + +# Vim-related files +[._]*.s[a-w][a-z] +[._]s[a-w][a-z] +*.un~ +Session.vim +.netrwhist + +# cscope-related files +cscope.* + +# Go test binaries +*.test +/hack/.test-cmd-auth + +# JUnit test output from ginkgo e2e tests +/junit*.xml + +# Mercurial files +**/.hg +**/.hg* + +# Vagrant +.vagrant +network_closure.sh + +# Local cluster env variables +/cluster/env.sh + +# Compiled binaries in third_party +/third_party/pkg + +# Also ignore etcd installed by hack/install-etcd.sh +/third_party/etcd* +/default.etcd + +# User cluster configs +.kubeconfig + +.tags* + +# Version file for dockerized build +.dockerized-kube-version-defs + +# Web UI +/www/master/node_modules/ +/www/master/npm-debug.log +/www/master/shared/config/development.json + +# Karma output +/www/test_out + +# precommit temporary directories created by ./hack/verify-generated-docs.sh and ./hack/lib/util.sh +/_tmp/ +/doc_tmp/ + +# Test artifacts produced by Jenkins jobs +/_artifacts/ + +# Go dependencies installed on Jenkins +/_gopath/ + +# Config directories created by gcloud and gsutil on Jenkins +/.config/gcloud*/ +/.gsutil/ + +# CoreOS stuff +/cluster/libvirt-coreos/coreos_*.img + +# Juju Stuff +/cluster/juju/charms/* +/cluster/juju/bundles/local.yaml + +# Downloaded Kubernetes binary release +/kubernetes/ + +# direnv .envrc files +.envrc + +# Downloaded kubernetes binary release tar ball +kubernetes.tar.gz + +# generated files in any directory +# TODO(thockin): uncomment this when we stop committing the generated files. +#zz_generated.* +#zz_generated.openapi.go + +# make-related metadata +/.make/ +# Just in time generated data in the source, should never be commited +/test/e2e/generated/bindata.go + +# This file used by some vendor repos (e.g. github.com/go-openapi/...) to store secret variables and should not be ignored +!\.drone\.sec + +/bazel-* +*.pyc + +# e2e log files +*.log + +# test coverage file +coverage.txt + diff --git a/LICENSE b/LICENSE index 261eeb9e9..d64569567 100644 --- a/LICENSE +++ b/LICENSE @@ -1,3 +1,4 @@ + Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ diff --git a/Makefile b/Makefile new file mode 100644 index 000000000..e08f0f829 --- /dev/null +++ b/Makefile @@ -0,0 +1,63 @@ +# Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + + +.PHONY: all build builder test +.DEFAULT_GOAL := all + +##### Global variables ##### + +DOCKER ?= docker +REGISTRY ?= volcanosh +VERSION ?= 1.0.0 + +##### Public rules ##### + +all: ubuntu16.04 centos7 + +push: + $(DOCKER) push "$(REGISTRY)/k8s-device-plugin:$(VERSION)-ubuntu16.04" + $(DOCKER) push "$(REGISTRY)/k8s-device-plugin:$(VERSION)-centos7" + +push-short: + $(DOCKER) tag "$(REGISTRY)/k8s-device-plugin:$(VERSION)-ubuntu16.04" "$(REGISTRY)/k8s-device-plugin:$(VERSION)" + $(DOCKER) push "$(REGISTRY)/k8s-device-plugin:$(VERSION)" + +push-latest: + $(DOCKER) tag "$(REGISTRY)/k8s-device-plugin:$(VERSION)-ubuntu16.04" "$(REGISTRY)/k8s-device-plugin:latest" + $(DOCKER) push "$(REGISTRY)/k8s-device-plugin:latest" + +ubuntu16.04: + $(DOCKER) build --pull \ + --tag $(REGISTRY)/k8s-device-plugin:$(VERSION)-ubuntu16.04 \ + --file docker/amd64/Dockerfile.ubuntu16.04 . + +centos7: + $(DOCKER) build --pull \ + --tag $(REGISTRY)/k8s-device-plugin:$(VERSION)-centos7 \ + --file docker/amd64/Dockerfile.centos7 . + +include Makefile.def + +BIN_DIR=_output/bin +RELEASE_DIR=_output/release +REL_OSARCH=linux/amd64 + +init: + mkdir -p ${BIN_DIR} + mkdir -p ${RELEASE_DIR} + +gen_bin: init + go get github.com/mitchellh/gox + CGO_ENABLED=1 gox -osarch=${REL_OSARCH} -ldflags ${LD_FLAGS} -output ${BIN_DIR}/${REL_OSARCH}/k8s-device-plugin ./ diff --git a/Makefile.def b/Makefile.def new file mode 100644 index 000000000..3cc3dcb51 --- /dev/null +++ b/Makefile.def @@ -0,0 +1,11 @@ + +# If tag not explicitly set in users default to the git sha. +TAG ?= $(shell git rev-parse --verify HEAD) +GitSHA=`git rev-parse HEAD` +Date=`date "+%Y-%m-%d %H:%M:%S"` +RELEASE_VER=latest +LD_FLAGS=" \ + -X '${REPO_PATH}/pkg/version.GitSHA=${GitSHA}' \ + -X '${REPO_PATH}/pkg/version.Built=${Date}' \ + -X '${REPO_PATH}/pkg/version.Version=${RELEASE_VER}'" + diff --git a/README.md b/README.md index 0f412ddc6..ceb5374bb 100644 --- a/README.md +++ b/README.md @@ -1,2 +1,161 @@ -# volcano-devices -Device plugins for Volcano, e.g. GPU +# Volcano device plugin for Kubernetes + +**Note**: +This is based on [Nvidia Device Plugin](https://github.com/NVIDIA/k8s-device-plugin) to support soft isolation of GPU card. +And collaborate with volcano, it is possible to enable GPU sharing. + +## Table of Contents + +- [About](#about) +- [Prerequisites](#prerequisites) +- [Quick Start](#quick-start) + - [Preparing your GPU Nodes](#preparing-your-gpu-nodes) + - [Enabling GPU Support in Kubernetes](#enabling-gpu-support-in-kubernetes) + - [Running GPU Sharing Jobs](#running-gpu-jobs) +- [Docs](#docs) +- [Issues and Contributing](#issues-and-contributing) + + +## About + +The Volcano device plugin for Kubernetes is a Daemonset that allows you to automatically: +- Expose the number of GPUs on each node of your cluster +- Keep track of the health of your GPUs +- Run GPU enabled containers in your Kubernetes cluster. + +This repository contains Volcano's official implementation of the [Kubernetes device plugin](https://github.com/kubernetes/community/blob/master/contributors/design-proposals/resource-management/device-plugin.md). + +## Prerequisites + +The list of prerequisites for running the Volcano device plugin is described below: +* NVIDIA drivers ~= 384.81 +* nvidia-docker version > 2.0 (see how to [install](https://github.com/NVIDIA/nvidia-docker) and it's [prerequisites](https://github.com/nvidia/nvidia-docker/wiki/Installation-\(version-2.0\)#prerequisites)) +* docker configured with nvidia as the [default runtime](https://github.com/NVIDIA/nvidia-docker/wiki/Advanced-topics#default-runtime). +* Kubernetes version >= 1.10 + +## Quick Start + +### Preparing your GPU Nodes + +The following steps need to be executed on all your GPU nodes. +This README assumes that the NVIDIA drivers and nvidia-docker have been installed. + +Note that you need to install the nvidia-docker2 package and not the nvidia-container-toolkit. +This is because the new `--gpus` options hasn't reached kubernetes yet. Example: +```bash +# Add the package repositories +$ distribution=$(. /etc/os-release;echo $ID$VERSION_ID) +$ curl -s -L https://nvidia.github.io/nvidia-docker/gpgkey | sudo apt-key add - +$ curl -s -L https://nvidia.github.io/nvidia-docker/$distribution/nvidia-docker.list | sudo tee /etc/apt/sources.list.d/nvidia-docker.list + +$ sudo apt-get update && sudo apt-get install -y nvidia-docker2 +$ sudo systemctl restart docker +``` + +You will need to enable the nvidia runtime as your default runtime on your node. +We will be editing the docker daemon config file which is usually present at `/etc/docker/daemon.json`: +```json +{ + "default-runtime": "nvidia", + "runtimes": { + "nvidia": { + "path": "/usr/bin/nvidia-container-runtime", + "runtimeArgs": [] + } + } +} +``` +> *if `runtimes` is not already present, head to the install page of [nvidia-docker](https://github.com/NVIDIA/nvidia-docker)* + +### Enabling GPU Support in Kubernetes + +Once you have enabled this option on *all* the GPU nodes you wish to use, +you can then enable GPU support in your cluster by deploying the following Daemonset: + +```shell +$ kubectl create -f volcano-device-plugin.yml +``` + +### Running GPU Sharing Jobs + +NVIDIA GPUs can now be shared via container level resource requirements using the resource name volcano.sh/gpu-memory: +```yaml +apiVersion: v1 +kind: Pod +metadata: + name: gpu-pod1 +spec: + containers: + - name: cuda-container + image: nvidia/cuda:9.0-devel + resources: + limits: + volcano.sh/gpu-memory: 1024 # requesting 1024MB GPU memory +--- +apiVersion: v1 +kind: Pod +metadata: + name: gpu-pod2 +spec: + containers: + - name: cuda-container + image: nvidia/cuda:9.0-devel + resources: + limits: + volcano.sh/gpu-memory: 1024 # requesting 1024MB GPU memory +``` + +> **WARNING:** *if you don't request GPUs when using the device plugin with NVIDIA images all +> the GPUs on the machine will be exposed inside your container.* + +## Docs + +Please note that: +- the device plugin feature is beta as of Kubernetes v1.11. +- the Volcano device plugin is alpha and is missing + - More comprehensive GPU health checking features + - GPU cleanup features + - GPU hard isolation + - ... + +The next sections are focused on building the device plugin and running it. + +### With Docker + +#### Build +```shell +$ make ubuntu16.04. +``` + +#### Run locally +```shell +$ docker run --security-opt=no-new-privileges --cap-drop=ALL --network=none -it -v /var/lib/kubelet/device-plugins:/var/lib/kubelet/device-plugins nvidia/k8s-device-plugin:{version} +``` + +#### Deploy as DaemonSet: +```shell +$ kubectl create -f nvidia-device-plugin.yml +``` + +# Issues and Contributing +[Checkout the Contributing document!](CONTRIBUTING.md) + +* You can report a bug by [filing a new issue](https://github.com/volcano-sh/k8s-device-plugin/issues/new) +* You can contribute by opening a [pull request](https://help.github.com/articles/using-pull-requests/) + +## Versioning + +The version exactly matches with [Volcano](https://github.com/volcano-sh/volcano). + +## Upgrading Kubernetes with the device plugin + +Upgrading Kubernetes when you have a device plugin deployed doesn't require you to do any, +particular changes to your workflow. +The API is versioned and is pretty stable (though it is not guaranteed to be non breaking), +upgrading kubernetes won't require you to deploy a different version of the device plugin and you will +see GPUs re-registering themselves after you node comes back online. + + +Upgrading the device plugin is a more complex task. It is recommended to drain GPU tasks as +we cannot guarantee that GPU tasks will survive a rolling upgrade. +However we make best efforts to preserve GPU tasks during an upgrade. diff --git a/docker/amd64/Dockerfile.centos7 b/docker/amd64/Dockerfile.centos7 new file mode 100644 index 000000000..70f706b17 --- /dev/null +++ b/docker/amd64/Dockerfile.centos7 @@ -0,0 +1,43 @@ +# Copyright (c) 2019, NVIDIA CORPORATION. All rights reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +FROM centos:7 as build + +RUN yum install -y \ + gcc-c++ \ + ca-certificates \ + wget && \ + rm -rf /var/cache/yum/* + +ENV GOLANG_VERSION 1.14.4 +RUN wget -nv -O - https://storage.googleapis.com/golang/go${GOLANG_VERSION}.linux-amd64.tar.gz \ + | tar -C /usr/local -xz +ENV GOPATH /go +ENV PATH $GOPATH/bin:/usr/local/go/bin:$PATH + +WORKDIR /go/src/volcano.sh/k8s-device-plugin +COPY . . + +RUN export CGO_LDFLAGS_ALLOW='-Wl,--unresolved-symbols=ignore-in-object-files' && \ + go build -ldflags="-s -w" + + +FROM centos:7 + +ENV NVIDIA_VISIBLE_DEVICES=all +ENV NVIDIA_DRIVER_CAPABILITIES=utility + +COPY --from=build /go/bin/k8s-device-plugin /usr/bin/k8s-device-plugin + +ENTRYPOINT ["k8s-device-plugin"] \ No newline at end of file diff --git a/docker/amd64/Dockerfile.ubuntu16.04 b/docker/amd64/Dockerfile.ubuntu16.04 new file mode 100644 index 000000000..f2a555bfb --- /dev/null +++ b/docker/amd64/Dockerfile.ubuntu16.04 @@ -0,0 +1,43 @@ +# Copyright (c) 2019, NVIDIA CORPORATION. All rights reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +FROM ubuntu:16.04 as build + +RUN apt-get update && apt-get install -y --no-install-recommends \ + g++ \ + ca-certificates \ + wget && \ + rm -rf /var/lib/apt/lists/* + +ENV GOLANG_VERSION 1.14.4 +RUN wget -nv -O - https://storage.googleapis.com/golang/go${GOLANG_VERSION}.linux-amd64.tar.gz \ + | tar -C /usr/local -xz +ENV GOPATH /go +ENV PATH $GOPATH/bin:/usr/local/go/bin:$PATH + +WORKDIR /go/src/volcano.sh/k8s-device-plugin +COPY . . + +RUN export CGO_LDFLAGS_ALLOW='-Wl,--unresolved-symbols=ignore-in-object-files' && \ + go build -ldflags="-s -w" + + +FROM debian:stretch-slim + +ENV NVIDIA_VISIBLE_DEVICES=all +ENV NVIDIA_DRIVER_CAPABILITIES=utility + +COPY --from=build /go/src/volcano.sh/k8s-device-plugin/k8s-device-plugin /usr/bin/k8s-device-plugin + +ENTRYPOINT ["k8s-device-plugin"] diff --git a/go.mod b/go.mod new file mode 100644 index 000000000..0f2b63ff4 --- /dev/null +++ b/go.mod @@ -0,0 +1,42 @@ +module volcano.sh/k8s-device-plugin + +go 1.14 + +replace ( + k8s.io/api => k8s.io/api v0.18.2 + k8s.io/apiextensions-apiserver => k8s.io/apiextensions-apiserver v0.18.2 + k8s.io/apimachinery => k8s.io/apimachinery v0.18.2 + k8s.io/apiserver => k8s.io/apiserver v0.18.2 + k8s.io/cli-runtime => k8s.io/cli-runtime v0.18.2 + k8s.io/client-go => k8s.io/client-go v0.18.2 + k8s.io/cloud-provider => k8s.io/cloud-provider v0.18.2 + k8s.io/cluster-bootstrap => k8s.io/cluster-bootstrap v0.18.2 + k8s.io/code-generator => k8s.io/code-generator v0.18.2 + k8s.io/component-base => k8s.io/component-base v0.18.2 + k8s.io/cri-api => k8s.io/cri-api v0.18.2 + k8s.io/csi-translation-lib => k8s.io/csi-translation-lib v0.18.2 + k8s.io/kube-aggregator => k8s.io/kube-aggregator v0.18.2 + k8s.io/kube-controller-manager => k8s.io/kube-controller-manager v0.18.2 + k8s.io/kube-proxy => k8s.io/kube-proxy v0.18.2 + k8s.io/kube-scheduler => k8s.io/kube-scheduler v0.18.2 + k8s.io/kubectl => k8s.io/kubectl v0.18.2 + k8s.io/kubelet => k8s.io/kubelet v0.18.2 + k8s.io/kubernetes => k8s.io/kubernetes v1.18.2 + k8s.io/legacy-cloud-providers => k8s.io/legacy-cloud-providers v0.18.2 + k8s.io/metrics => k8s.io/metrics v0.18.2 + k8s.io/sample-apiserver => k8s.io/sample-apiserver v0.18.2 +) + +require ( + github.com/NVIDIA/gpu-monitoring-tools v0.0.0-20200421213100-de959f43b55a + github.com/fsnotify/fsnotify v1.4.9 + github.com/prometheus/common v0.4.1 + golang.org/x/net v0.0.0-20200421231249-e086a090c8fd // indirect + google.golang.org/grpc v1.29.0 + k8s.io/api v0.18.2 + k8s.io/apimachinery v0.18.2 + k8s.io/client-go v0.18.2 + k8s.io/klog v1.0.0 + k8s.io/kubelet v0.0.0 + k8s.io/kubernetes v1.18.2 +) diff --git a/go.sum b/go.sum new file mode 100644 index 000000000..80ca020a2 --- /dev/null +++ b/go.sum @@ -0,0 +1,757 @@ +bitbucket.org/bertimus9/systemstat v0.0.0-20180207000608-0eeff89b0690/go.mod h1:Ulb78X89vxKYgdL24HMTiXYHlyHEvruOj1ZPlqeNEZM= +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU= +github.com/Azure/azure-sdk-for-go v35.0.0+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc= +github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8= 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--git a/main.go b/main.go new file mode 100644 index 000000000..eb93815b3 --- /dev/null +++ b/main.go @@ -0,0 +1,108 @@ +/* + * Copyright (c) 2019, NVIDIA CORPORATION. All rights reserved. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package main + +import ( + "flag" + "log" + "os" + "os/signal" + "syscall" + + "github.com/fsnotify/fsnotify" + pluginapi "k8s.io/kubelet/pkg/apis/deviceplugin/v1beta1" + + "volcano.sh/k8s-device-plugin/pkg/filewatcher" + "volcano.sh/k8s-device-plugin/pkg/plugin" + "volcano.sh/k8s-device-plugin/pkg/plugin/nvidia" +) + +func getAllPlugins() []plugin.DevicePlugin { + return []plugin.DevicePlugin{ + nvidia.NewNvidiaDevicePlugin(), + } +} + +func main() { + flag.Parse() + + log.Println("Starting file watcher.") + watcher, err := filewatcher.NewFileWatcher(pluginapi.DevicePluginPath) + if err != nil { + log.Printf("Failed to created file watcher: %v", err) + os.Exit(1) + } + + log.Println("Retrieving plugins.") + plugins := getAllPlugins() + + log.Println("Starting OS signal watcher.") + sigCh := make(chan os.Signal, 1) + signal.Notify(sigCh, syscall.SIGHUP, syscall.SIGINT, syscall.SIGTERM) + + go func() { + select { + case s := <-sigCh: + log.Printf("Received signal \"%v\", shutting down.", s) + for _, p := range plugins { + p.Stop() + } + } + os.Exit(-1) + }() + +restart: + // Loop through all plugins, idempotently stopping them, and then starting + // them if they have any devices to serve. If even one plugin fails to + // start properly, try starting them all again. + for _, p := range plugins { + p.Stop() + + // Just continue if there are no devices to serve for plugin p. + if p.DevicesNum() == 0 { + continue + } + + // Start the gRPC server for plugin p and connect it with the kubelet. + if err := p.Start(); err != nil { + log.Printf("Plugin %s failed to start: %v", p.Name(), err) + log.Printf("You can check the prerequisites at: https://github.com/volcano-sh/k8s-device-plugin#prerequisites") + log.Printf("You can learn how to set the runtime at: https://github.com/volcano-sh/k8s-device-plugin#quick-start") + // If there was an error starting any plugins, restart them all. + goto restart + } + } + + // Start an infinite loop, waiting for several indicators to either log + // some messages, trigger a restart of the plugins, or exit the program. + for { + select { + // Detect a kubelet restart by watching for a newly created + // 'pluginapi.KubeletSocket' file. When this occurs, restart this loop, + // restarting all of the plugins in the process. + case event := <-watcher.Events: + if event.Name == pluginapi.KubeletSocket && event.Op&fsnotify.Create == fsnotify.Create { + log.Printf("inotify: %s created, restarting.", pluginapi.KubeletSocket) + goto restart + } + + // Watch for any other fs errors and log them. + case err := <-watcher.Errors: + log.Printf("inotify: %s", err) + } + } +} diff --git a/pkg/filewatcher/filewatcher.go b/pkg/filewatcher/filewatcher.go new file mode 100644 index 000000000..ab6c7a9cc --- /dev/null +++ b/pkg/filewatcher/filewatcher.go @@ -0,0 +1,39 @@ +/* +Copyright 2020 The Volcano Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package filewatcher + +import ( + "github.com/fsnotify/fsnotify" +) + +// NewFileWatcher creates a file watcher watching the given files. +func NewFileWatcher(files ...string) (*fsnotify.Watcher, error) { + watcher, err := fsnotify.NewWatcher() + if err != nil { + return nil, err + } + + for _, f := range files { + err = watcher.Add(f) + if err != nil { + watcher.Close() + return nil, err + } + } + + return watcher, nil +} diff --git a/pkg/plugin/interface.go b/pkg/plugin/interface.go new file mode 100644 index 000000000..8fbb93f0c --- /dev/null +++ b/pkg/plugin/interface.go @@ -0,0 +1,29 @@ +/* +Copyright 2020 The Volcano Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package plugin + +// DevicePlugin interface +type DevicePlugin interface { + // Get the device plugin name + Name() string + // Start the plugin + Start() error + // Get all the devices number which reside within the node + DevicesNum() int + // Stop the plugin + Stop() error +} diff --git a/pkg/plugin/nvidia/const.go b/pkg/plugin/nvidia/const.go new file mode 100644 index 000000000..deafccfd9 --- /dev/null +++ b/pkg/plugin/nvidia/const.go @@ -0,0 +1,38 @@ +/* +Copyright 2020 The Volcano Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package nvidia + +const ( + + // Extended gpu resource + VolcanoGPUResource = "volcano.sh/gpu-memory" + // Virtual GPU card number + VolcanoGPUNumber = "volcano.sh/gpu-number" + + // Annotation + PredicateTime = "volcano.sh/predicate-time" + GPUAssigned = "volcano.sh/gpu-assigned" + GPUIndex = "volcano.sh/gpu-index" + + // Container env + // Allocated gpu memory + AllocatedGPUResource = "VOLCANO_GPU_ALLOCATED" + // Total gpu mem + TotalGPUResource = "VOLCANO_GPU_TOTAL" + // NVIDIA visible devices + VisibleDevice = "NVIDIA_VISIBLE_DEVICES" +) diff --git a/pkg/plugin/nvidia/kube_interactor.go b/pkg/plugin/nvidia/kube_interactor.go new file mode 100644 index 000000000..d2b9b231d --- /dev/null +++ b/pkg/plugin/nvidia/kube_interactor.go @@ -0,0 +1,116 @@ +/* +Copyright 2020 The Volcano Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package nvidia + +import ( + "context" + "fmt" + "os" + "time" + + v1 "k8s.io/api/core/v1" + "k8s.io/apimachinery/pkg/api/resource" + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" + "k8s.io/apimachinery/pkg/fields" + "k8s.io/apimachinery/pkg/types" + "k8s.io/apimachinery/pkg/util/wait" + "k8s.io/client-go/kubernetes" + "k8s.io/client-go/tools/clientcmd" + "k8s.io/klog" + nodeutil "k8s.io/kubernetes/pkg/util/node" +) + +type KubeInteractor struct { + clientset *kubernetes.Clientset + nodeName string +} + +func NewKubeClient() (*kubernetes.Clientset, error) { + clientCfg, err := clientcmd.BuildConfigFromFlags("", os.Getenv("KUBECONFIG")) + if err != nil { + return nil, err + } + + clientset, err := kubernetes.NewForConfig(clientCfg) + if err != nil { + return nil, err + } + + return clientset, nil +} + +func NewKubeInteractor() (*KubeInteractor, error) { + client, err := NewKubeClient() + if err != nil { + return nil, fmt.Errorf("failed to create kube client: %v", err) + } + + return &KubeInteractor{ + clientset: client, + nodeName: os.Getenv("NODE_NAME"), + }, nil +} + +func (ki *KubeInteractor) GetPendingPodsOnNode() ([]v1.Pod, error) { + var ( + res []v1.Pod + pl *v1.PodList + err error + ) + selector := fields.SelectorFromSet(fields.Set{"spec.nodeName": ki.nodeName, "status.phase": string(v1.PodPending)}) + err = wait.PollImmediate(1*time.Second, 10*time.Second, func() (bool, error) { + pl, err = ki.clientset.CoreV1().Pods(v1.NamespaceAll).List(context.TODO(), metav1.ListOptions{ + FieldSelector: selector.String(), + }) + if err != nil { + return false, nil + } + return true, nil + }) + if err != nil { + return nil, fmt.Errorf("kube interactor timedout: %v", err) + } + + for _, pod := range pl.Items { + res = append(res, pod) + } + + return res, nil +} + +func (ki *KubeInteractor) PatchGPUResourceOnNode(gpuCount int) error { + var err error + err = wait.PollImmediate(1*time.Second, 10*time.Second, func() (bool, error) { + var node *v1.Node + node, err = ki.clientset.CoreV1().Nodes().Get(context.TODO(), ki.nodeName, metav1.GetOptions{}) + if err != nil { + klog.Info("failed to get node %s: %v", ki.nodeName, err) + return false, nil + } + + newNode := node.DeepCopy() + newNode.Status.Capacity[VolcanoGPUNumber] = *resource.NewQuantity(int64(gpuCount), resource.DecimalSI) + newNode.Status.Allocatable[VolcanoGPUNumber] = *resource.NewQuantity(int64(gpuCount), resource.DecimalSI) + _, _, err = nodeutil.PatchNodeStatus(ki.clientset.CoreV1(), types.NodeName(ki.nodeName), node, newNode) + if err != nil { + klog.Infof("failed to patch volcano gpu resource: %v", err) + return false, nil + } + return true, nil + }) + return err +} diff --git a/pkg/plugin/nvidia/nvidia.go b/pkg/plugin/nvidia/nvidia.go new file mode 100644 index 000000000..deb4727f6 --- /dev/null +++ b/pkg/plugin/nvidia/nvidia.go @@ -0,0 +1,148 @@ +/* + * Copyright (c) 2019, NVIDIA CORPORATION. All rights reserved. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package nvidia + +import ( + "log" + "os" + "strings" + + "github.com/NVIDIA/gpu-monitoring-tools/bindings/go/nvml" + + pluginapi "k8s.io/kubelet/pkg/apis/deviceplugin/v1beta1" +) + +const ( + envDisableHealthChecks = "DP_DISABLE_HEALTHCHECKS" + allHealthChecks = "xids" +) + +type Device struct { + pluginapi.Device + Path string +} + +type ResourceManager interface { + Devices() []*Device + CheckHealth(stop <-chan struct{}, devices []*Device, unhealthy chan<- *Device) +} + +type GpuDeviceManager struct{} + +func check(err error) { + if err != nil { + log.Panicln("Fatal:", err) + } +} + +func NewGpuDeviceManager() *GpuDeviceManager { + return &GpuDeviceManager{} +} + +func (g *GpuDeviceManager) Devices() []*Device { + n, err := nvml.GetDeviceCount() + check(err) + + var devs []*Device + for i := uint(0); i < n; i++ { + d, err := nvml.NewDeviceLite(i) + check(err) + devs = append(devs, buildDevice(d)) + } + + return devs +} + +func (g *GpuDeviceManager) CheckHealth(stop <-chan struct{}, devices []*Device, unhealthy chan<- *Device) { + checkHealth(stop, devices, unhealthy) +} + +func buildDevice(d *nvml.Device) *Device { + dev := Device{} + dev.ID = d.UUID + dev.Health = pluginapi.Healthy + dev.Path = d.Path + if d.CPUAffinity != nil { + dev.Topology = &pluginapi.TopologyInfo{ + Nodes: []*pluginapi.NUMANode{ + &pluginapi.NUMANode{ + ID: int64(*(d.CPUAffinity)), + }, + }, + } + } + return &dev +} + +func checkHealth(stop <-chan struct{}, devices []*Device, unhealthy chan<- *Device) { + disableHealthChecks := strings.ToLower(os.Getenv(envDisableHealthChecks)) + if disableHealthChecks == "all" { + disableHealthChecks = allHealthChecks + } + if strings.Contains(disableHealthChecks, "xids") { + return + } + + eventSet := nvml.NewEventSet() + defer nvml.DeleteEventSet(eventSet) + + for _, d := range devices { + err := nvml.RegisterEventForDevice(eventSet, nvml.XidCriticalError, d.ID) + if err != nil && strings.HasSuffix(err.Error(), "Not Supported") { + log.Printf("Warning: %s is too old to support healthchecking: %s. Marking it unhealthy.", d.ID, err) + unhealthy <- d + continue + } + check(err) + } + + for { + select { + case <-stop: + return + default: + } + + e, err := nvml.WaitForEvent(eventSet, 5000) + if err != nil && e.Etype != nvml.XidCriticalError { + continue + } + + // FIXME: formalize the full list and document it. + // http://docs.nvidia.com/deploy/xid-errors/index.html#topic_4 + // Application errors: the GPU should still be healthy + if e.Edata == 31 || e.Edata == 43 || e.Edata == 45 { + continue + } + + if e.UUID == nil || len(*e.UUID) == 0 { + // All devices are unhealthy + log.Printf("XidCriticalError: Xid=%d, All devices will go unhealthy.", e.Edata) + for _, d := range devices { + unhealthy <- d + } + continue + } + + for _, d := range devices { + if d.ID == *e.UUID { + log.Printf("XidCriticalError: Xid=%d on Device=%s, the device will go unhealthy.", e.Edata, d.ID) + unhealthy <- d + } + } + } +} diff --git a/pkg/plugin/nvidia/server.go b/pkg/plugin/nvidia/server.go new file mode 100644 index 000000000..abe006335 --- /dev/null +++ b/pkg/plugin/nvidia/server.go @@ -0,0 +1,364 @@ +/* +Copyright 2020 The Volcano Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package nvidia + +import ( + "context" + "fmt" + "log" + "net" + "os" + "path" + "sort" + "time" + + "github.com/NVIDIA/gpu-monitoring-tools/bindings/go/nvml" + v1 "k8s.io/api/core/v1" + "k8s.io/klog" + + "google.golang.org/grpc" + pluginapi "k8s.io/kubelet/pkg/apis/deviceplugin/v1beta1" +) + +// NvidiaDevicePlugin implements the Kubernetes device plugin API +type NvidiaDevicePlugin struct { + ResourceManager + resourceName string + socket string + + server *grpc.Server + // Physical gpu card + physicalDevices []*Device + health chan *Device + stop chan struct{} + + // Virtual devices + virtualDevices []*pluginapi.Device + devicesByIndex map[uint]string + + kubeInteractor *KubeInteractor +} + +// NewNvidiaDevicePlugin returns an initialized NvidiaDevicePlugin +func NewNvidiaDevicePlugin() *NvidiaDevicePlugin { + log.Println("Loading NVML") + if err := nvml.Init(); err != nil { + log.Printf("Failed to initialize NVML: %s.", err) + log.Printf("If this is a GPU node, did you set the docker default runtime to `nvidia`?") + log.Printf("You can check the prerequisites at: https://github.com/volcano-sh/k8s-device-plugin#prerequisites") + log.Fatalf("You can learn how to set the runtime at: https://github.com/volcano-sh/k8s-device-plugin#quick-start") + } + + ki, err := NewKubeInteractor() + if err != nil { + klog.Fatalf("cannot create kube interactor. %v", err) + } + + return &NvidiaDevicePlugin{ + ResourceManager: NewGpuDeviceManager(), + resourceName: VolcanoGPUResource, + socket: pluginapi.DevicePluginPath + "volcano.sock", + kubeInteractor: ki, + + // These will be reinitialized every + // time the plugin server is restarted. + physicalDevices: nil, + server: nil, + health: nil, + stop: nil, + virtualDevices: nil, + devicesByIndex: nil, + } +} + +func (m *NvidiaDevicePlugin) initialize() { + m.physicalDevices = m.Devices() + m.server = grpc.NewServer([]grpc.ServerOption{}...) + m.health = make(chan *Device) + m.stop = make(chan struct{}) + + m.virtualDevices, m.devicesByIndex = GetDevices() +} + +func (m *NvidiaDevicePlugin) cleanup() { + close(m.stop) + m.stop = nil + m.physicalDevices = nil + m.server = nil + m.health = nil + m.virtualDevices = nil + m.devicesByIndex = nil +} + +func (m *NvidiaDevicePlugin) GetDeviceNameByIndex(index uint) (name string, found bool) { + if m.devicesByIndex != nil { + name, ok := m.devicesByIndex[index] + return name, ok + } + return "", false +} + +// Name returns the name of the plugin +func (m *NvidiaDevicePlugin) Name() string { + return "Volcano-GPU-Sharing" +} + +// Start starts the gRPC server, registers the device plugin with the Kubelet, +// and starts the device healthchecks. +func (m *NvidiaDevicePlugin) Start() error { + m.initialize() + // must be called after initialize + if err := m.kubeInteractor.PatchGPUResourceOnNode(len(m.physicalDevices)); err != nil { + log.Printf("failed to patch gpu resource: %v", err) + m.cleanup() + return fmt.Errorf("failed to patch gpu resource: %v", err) + } + + err := m.Serve() + if err != nil { + log.Printf("Could not start device plugin for '%s': %s", m.resourceName, err) + m.cleanup() + return err + } + log.Printf("Starting to serve '%s' on %s", m.resourceName, m.socket) + + err = m.Register() + if err != nil { + log.Printf("Could not register device plugin: %s", err) + m.Stop() + return err + } + log.Printf("Registered device plugin for '%s' with Kubelet", m.resourceName) + + go m.CheckHealth(m.stop, m.physicalDevices, m.health) + + return nil +} + +// Stop stops the gRPC server. +func (m *NvidiaDevicePlugin) Stop() error { + if m == nil || m.server == nil { + return nil + } + log.Printf("Stopping to serve '%s' on %s", m.resourceName, m.socket) + m.server.Stop() + if err := os.Remove(m.socket); err != nil && !os.IsNotExist(err) { + return err + } + m.cleanup() + return nil +} + +func (m *NvidiaDevicePlugin) DevicesNum() int { + return len(m.Devices()) +} + +// Serve starts the gRPC server of the device plugin. +func (m *NvidiaDevicePlugin) Serve() error { + sock, err := net.Listen("unix", m.socket) + if err != nil { + return err + } + + pluginapi.RegisterDevicePluginServer(m.server, m) + + go func() { + lastCrashTime := time.Now() + restartCount := 0 + for { + log.Printf("Starting GRPC server for '%s'", m.resourceName) + err := m.server.Serve(sock) + if err == nil { + break + } + + log.Printf("GRPC server for '%s' crashed with error: %v", m.resourceName, err) + + // restart if it has not been too often + // i.e. if server has crashed more than 5 times and it didn't last more than one hour each time + if restartCount > 5 { + // quit + log.Fatal("GRPC server for '%s' has repeatedly crashed recently. Quitting", m.resourceName) + } + timeSinceLastCrash := time.Since(lastCrashTime).Seconds() + lastCrashTime = time.Now() + if timeSinceLastCrash > 3600 { + // it has been one hour since the last crash.. reset the count + // to reflect on the frequency + restartCount = 1 + } else { + restartCount += 1 + } + } + }() + + // Wait for server to start by launching a blocking connection + conn, err := m.dial(m.socket, 5*time.Second) + if err != nil { + return err + } + conn.Close() + + return nil +} + +// Register registers the device plugin for the given resourceName with Kubelet. +func (m *NvidiaDevicePlugin) Register() error { + conn, err := m.dial(pluginapi.KubeletSocket, 5*time.Second) + if err != nil { + return err + } + defer conn.Close() + + client := pluginapi.NewRegistrationClient(conn) + req := &pluginapi.RegisterRequest{ + Version: pluginapi.Version, + Endpoint: path.Base(m.socket), + ResourceName: m.resourceName, + } + + _, err = client.Register(context.Background(), req) + if err != nil { + return err + } + return nil +} + +func (m *NvidiaDevicePlugin) GetDevicePluginOptions(context.Context, *pluginapi.Empty) (*pluginapi.DevicePluginOptions, error) { + return &pluginapi.DevicePluginOptions{}, nil +} + +// ListAndWatch lists devices and update that list according to the health status +func (m *NvidiaDevicePlugin) ListAndWatch(e *pluginapi.Empty, s pluginapi.DevicePlugin_ListAndWatchServer) error { + err := s.Send(&pluginapi.ListAndWatchResponse{Devices: m.virtualDevices}) + if err != nil { + log.Fatalf("failed sending devices %d: %v", len(m.virtualDevices), err) + } + + for { + select { + case <-m.stop: + return nil + case d := <-m.health: + // FIXME: there is no way to recover from the Unhealthy state. + d.Health = pluginapi.Unhealthy + log.Printf("'%s' device marked unhealthy: %s", m.resourceName, d.ID) + s.Send(&pluginapi.ListAndWatchResponse{Devices: m.virtualDevices}) + } + } +} + +// TODO(@hzxuzhonghu): This is called per container by kubelet, we do not handle multi containers pod case correctly. +// Allocate which return list of devices. +func (m *NvidiaDevicePlugin) Allocate(ctx context.Context, reqs *pluginapi.AllocateRequest) (*pluginapi.AllocateResponse, error) { + var reqCount uint + for _, req := range reqs.ContainerRequests { + reqCount += uint(len(req.DevicesIDs)) + } + + responses := pluginapi.AllocateResponse{} + + firstContainerReq := reqs.ContainerRequests[0] + firstContainerReqDeviceCount := uint(len(firstContainerReq.DevicesIDs)) + + availablePods := podSlice{} + pendingPods, err := m.kubeInteractor.GetPendingPodsOnNode() + if err != nil { + return nil, err + } + for _, pod := range pendingPods { + current := pod + if IsGPURequiredPod(¤t) && !IsGPUAssignedPod(¤t) && !IsShouldDeletePod(¤t) { + availablePods = append(availablePods, ¤t) + } + } + + sort.Sort(availablePods) + + var candidatePod *v1.Pod + for _, pod := range availablePods { + for i, c := range pod.Spec.Containers { + if !IsGPURequiredContainer(&c) { + continue + } + + if GetGPUResourceOfContainer(&pod.Spec.Containers[i]) == firstContainerReqDeviceCount { + klog.Infof("Got candidate Pod %s(%s), the device count is: %d", pod.UID, c.Name, firstContainerReqDeviceCount) + candidatePod = pod + goto Allocate + } + } + } + + if candidatePod == nil { + return nil, fmt.Errorf("failed to find candidate pod") + } + +Allocate: + id := GetGPUIDFromPodAnnotation(candidatePod) + if id < 0 { + klog.Warningf("Failed to get the gpu id for pod %s/%s", candidatePod.Namespace, candidatePod.Name) + return nil, fmt.Errorf("failed to find gpu id") + } + _, exist := m.GetDeviceNameByIndex(uint(id)) + if !exist { + klog.Warningf("Failed to find the dev for pod %s/%s because it's not able to find dev with index %d", + candidatePod.Namespace, candidatePod.Name, id) + return nil, fmt.Errorf("failed to find gpu device") + } + + for _, req := range reqs.ContainerRequests { + reqGPU := len(req.DevicesIDs) + response := pluginapi.ContainerAllocateResponse{ + Envs: map[string]string{ + VisibleDevice: fmt.Sprintf("%d", id), + AllocatedGPUResource: fmt.Sprintf("%d", reqGPU), + TotalGPUResource: fmt.Sprintf("%d", gpuMemory), + }, + } + responses.ContainerResponses = append(responses.ContainerResponses, &response) + } + + err = UpdatePodAnnotations(m.kubeInteractor.clientset, candidatePod) + if err != nil { + return nil, fmt.Errorf("failed to update pod annotation %v", err) + } + + return &responses, nil + +} + +func (m *NvidiaDevicePlugin) PreStartContainer(context.Context, *pluginapi.PreStartContainerRequest) (*pluginapi.PreStartContainerResponse, error) { + return &pluginapi.PreStartContainerResponse{}, nil +} + +// dial establishes the gRPC communication with the registered device plugin. +func (m *NvidiaDevicePlugin) dial(unixSocketPath string, timeout time.Duration) (*grpc.ClientConn, error) { + ctx, cancel := context.WithTimeout(context.Background(), timeout) + defer cancel() + c, err := grpc.DialContext(ctx, unixSocketPath, grpc.WithInsecure(), grpc.WithBlock(), + grpc.WithContextDialer(func(ctx context.Context, addr string) (net.Conn, error) { + return net.DialTimeout("unix", addr, timeout) + }), + ) + + if err != nil { + return nil, err + } + + return c, nil +} diff --git a/pkg/plugin/nvidia/utils.go b/pkg/plugin/nvidia/utils.go new file mode 100644 index 000000000..c50d08c84 --- /dev/null +++ b/pkg/plugin/nvidia/utils.go @@ -0,0 +1,220 @@ +/* +Copyright 2020 The Volcano Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package nvidia + +import ( + "context" + "fmt" + "math" + "strconv" + "strings" + + "github.com/NVIDIA/gpu-monitoring-tools/bindings/go/nvml" + "github.com/prometheus/common/log" + v1 "k8s.io/api/core/v1" + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" + "k8s.io/client-go/kubernetes" + "k8s.io/klog" + pluginapi "k8s.io/kubelet/pkg/apis/deviceplugin/v1beta1" +) + +// Container specific operations + +func IsGPURequiredContainer(c *v1.Container) bool { + vmemory := GetGPUResourceOfContainer(c) + if vmemory == 0 { + return false + } + + return true +} + +func GetGPUResourceOfContainer(container *v1.Container) uint { + var count uint + if val, ok := container.Resources.Limits[VolcanoGPUResource]; ok { + count = uint(val.Value()) + } + return count +} + +// Device specific operations + +var ( + gpuMemory uint +) + +func GenerateVirtualDeviceID(id uint, fakeCounter uint) string { + return fmt.Sprintf("%d-%d", id, fakeCounter) +} + +func SetGPUMemory(raw uint) { + v := raw + gpuMemory = v + log.Infof("set gpu memory: %d", gpuMemory) +} + +func GetGPUMemory() uint { + return gpuMemory +} + +// GetDevices returns virtual devices and all physical devices by index. +func GetDevices() ([]*pluginapi.Device, map[uint]string) { + n, err := nvml.GetDeviceCount() + check(err) + + var virtualDevs []*pluginapi.Device + deviceByIndex := map[uint]string{} + for i := uint(0); i < n; i++ { + d, err := nvml.NewDevice(i) + check(err) + var id uint + _, err = fmt.Sscanf(d.Path, "/dev/nvidia%d", &id) + check(err) + deviceByIndex[id] = d.UUID + // TODO: Do we assume all cards are of same capacity + if GetGPUMemory() == uint(0) { + SetGPUMemory(uint(*d.Memory)) + } + for j := uint(0); j < GetGPUMemory(); j++ { + fakeID := GenerateVirtualDeviceID(id, j) + virtualDevs = append(virtualDevs, &pluginapi.Device{ + ID: fakeID, + Health: pluginapi.Healthy, + }) + } + } + + return virtualDevs, deviceByIndex +} + +// Pod specific operations + +type podSlice []*v1.Pod + +func (s podSlice) Len() int { + return len(s) +} + +func (s podSlice) Less(i, j int) bool { + return GetPredicateTimeFromPodAnnotation(s[i]) <= GetPredicateTimeFromPodAnnotation(s[j]) +} + +func (s podSlice) Swap(i, j int) { + s[i], s[j] = s[j], s[i] +} + +func IsGPURequiredPod(pod *v1.Pod) bool { + + vmemory := GetGPUResourceOfPod(pod, VolcanoGPUResource) + + if vmemory <= 0 { + return false + } + + return true +} + +func IsGPUAssignedPod(pod *v1.Pod) bool { + + assigned, ok := pod.ObjectMeta.Annotations[GPUAssigned] + if !ok { + klog.V(4).Infof("no assigned flag", + pod.Name, + pod.Namespace) + return false + } + + if assigned == "false" { + klog.V(4).Infof("pod has not been assigned", + pod.Name, + pod.Namespace) + return false + } + + return true +} + +func IsShouldDeletePod(pod *v1.Pod) bool { + if pod.DeletionTimestamp != nil { + return true + } + for _, status := range pod.Status.ContainerStatuses { + if status.State.Waiting != nil && + strings.Contains(status.State.Waiting.Message, "PreStartContainer check failed") { + return true + } + } + if pod.Status.Reason == "UnexpectedAdmissionError" { + return true + } + return false +} + +func GetGPUResourceOfPod(pod *v1.Pod, resourceName v1.ResourceName) uint { + var total uint + containers := pod.Spec.Containers + for _, container := range containers { + if val, ok := container.Resources.Limits[resourceName]; ok { + total += uint(val.Value()) + } + } + return total +} + +func GetPredicateTimeFromPodAnnotation(pod *v1.Pod) uint64 { + if assumeTimeStr, ok := pod.Annotations[PredicateTime]; ok { + predicateTime, err := strconv.ParseUint(assumeTimeStr, 10, 64) + if err == nil { + return predicateTime + } + } + + return math.MaxUint64 +} + +// GetGPUIDFromPodAnnotation returns the ID of the GPU if allocated +func GetGPUIDFromPodAnnotation(pod *v1.Pod) int { + if len(pod.Annotations) > 0 { + value, found := pod.Annotations[GPUIndex] + if found { + id, err := strconv.Atoi(value) + if err != nil { + klog.Error("invalid %s=%s", GPUIndex, value) + return -1 + } + return id + } + } + + return -1 +} + +func UpdatePodAnnotations(kubeClient *kubernetes.Clientset, pod *v1.Pod) error { + pod, err := kubeClient.CoreV1().Pods(pod.Namespace).Get(context.TODO(), pod.Name, metav1.GetOptions{}) + if err != nil { + return err + } + if len(pod.Annotations) == 0 { + pod.Annotations = map[string]string{} + } + + pod.Annotations[GPUAssigned] = "true" + + // TODO(@hzxuzhonghu): use patch instead + _, err = kubeClient.CoreV1().Pods(pod.Namespace).Update(context.TODO(), pod, metav1.UpdateOptions{}) + return err +} diff --git a/pod1.yml b/pod1.yml new file mode 100644 index 000000000..71554ca5c --- /dev/null +++ b/pod1.yml @@ -0,0 +1,14 @@ +apiVersion: v1 +kind: Pod +metadata: + name: pod1 +spec: + restartPolicy: OnFailure + containers: + - image: nvidia/cuda:10.1-base-ubuntu18.04 + name: pod1-ctr + command: ["sleep"] + args: ["100000"] + resources: + limits: + volcano.sh/gpu-memory: 1024 # 1024MB diff --git a/volcano-device-plugin.yml b/volcano-device-plugin.yml new file mode 100644 index 000000000..5fe3a9caf --- /dev/null +++ b/volcano-device-plugin.yml @@ -0,0 +1,66 @@ +# Copyright (c) 2019, NVIDIA CORPORATION. All rights reserved. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +apiVersion: apps/v1 +kind: DaemonSet +metadata: + name: nvidia-device-plugin-daemonset + namespace: kube-system +spec: + selector: + matchLabels: + name: nvidia-device-plugin-ds + updateStrategy: + type: RollingUpdate + template: + metadata: + # This annotation is deprecated. Kept here for backward compatibility + # See https://kubernetes.io/docs/tasks/administer-cluster/guaranteed-scheduling-critical-addon-pods/ + annotations: + scheduler.alpha.kubernetes.io/critical-pod: "" + labels: + name: nvidia-device-plugin-ds + spec: + tolerations: + # This toleration is deprecated. Kept here for backward compatibility + # See https://kubernetes.io/docs/tasks/administer-cluster/guaranteed-scheduling-critical-addon-pods/ + - key: CriticalAddonsOnly + operator: Exists + - key: volcano.sh/gpu-memory + operator: Exists + effect: NoSchedule + # Mark this pod as a critical add-on; when enabled, the critical add-on + # scheduler reserves resources for critical add-on pods so that they can + # be rescheduled after a failure. + # See https://kubernetes.io/docs/tasks/administer-cluster/guaranteed-scheduling-critical-addon-pods/ + priorityClassName: "system-node-critical" + containers: + - image: nvidia/k8s-device-plugin:latest + name: nvidia-device-plugin-ctr + env: + - name: NODE_NAME + valueFrom: + fieldRef: + fieldPath: spec.nodeName + securityContext: + allowPrivilegeEscalation: false + capabilities: + drop: ["ALL"] + volumeMounts: + - name: device-plugin + mountPath: /var/lib/kubelet/device-plugins + volumes: + - name: device-plugin + hostPath: + path: /var/lib/kubelet/device-plugins