volcano-sh
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devices
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Init commit for gpu sharing device. 

Signed-off-by: tizhou86 <tizhou1986@gmail.com>
This commit is contained in:
tizhou86 2020-07-01 11:54:02 +08:00
parent ef7f87bb3a
commit 64438cc0de
19 changed files with 2394 additions and 2 deletions
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# 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

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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/

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# 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 ./

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# 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}'"

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# 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.

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# 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"]

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# 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"]

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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
)

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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=
github.com/Azure/go-autorest/autorest v0.9.0/go.mod h1:xyHB1BMZT0cuDHU7I0+g046+BFDTQ8rEZB0s4Yfa6bI=
github.com/Azure/go-autorest/autorest/adal v0.5.0/go.mod h1:8Z9fGy2MpX0PvDjB1pEgQTmVqjGhiHBW7RJJEciWzS0=
github.com/Azure/go-autorest/autorest/date v0.1.0/go.mod h1:plvfp3oPSKwf2DNjlBjWF/7vwR+cUD/ELuzDCXwHUVA=
github.com/Azure/go-autorest/autorest/mocks v0.1.0/go.mod h1:OTyCOPRA2IgIlWxVYxBee2F5Gr4kF2zd2J5cFRaIDN0=
github.com/Azure/go-autorest/autorest/mocks v0.2.0/go.mod h1:OTyCOPRA2IgIlWxVYxBee2F5Gr4kF2zd2J5cFRaIDN0=
github.com/Azure/go-autorest/autorest/to v0.2.0/go.mod h1:GunWKJp1AEqgMaGLV+iocmRAJWqST1wQYhyyjXJ3SJc=
github.com/Azure/go-autorest/autorest/validation v0.1.0/go.mod h1:Ha3z/SqBeaalWQvokg3NZAlQTalVMtOIAs1aGK7G6u8=
github.com/Azure/go-autorest/logger v0.1.0/go.mod h1:oExouG+K6PryycPJfVSxi/koC6LSNgds39diKLz7Vrc=
github.com/Azure/go-autorest/tracing v0.5.0/go.mod h1:r/s2XiOKccPW3HrqB+W0TQzfbtp2fGCgRFtBroKn4Dk=
github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
github.com/GoogleCloudPlatform/k8s-cloud-provider v0.0.0-20190822182118-27a4ced34534/go.mod h1:iroGtC8B3tQiqtds1l+mgk/BBOrxbqjH+eUfFQYRc14=
github.com/JeffAshton/win_pdh v0.0.0-20161109143554-76bb4ee9f0ab/go.mod h1:3VYc5hodBMJ5+l/7J4xAyMeuM2PNuepvHlGs8yilUCA=
github.com/MakeNowJust/heredoc v0.0.0-20170808103936-bb23615498cd/go.mod h1:64YHyfSL2R96J44Nlwm39UHepQbyR5q10x7iYa1ks2E=
github.com/Microsoft/go-winio v0.4.14/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA=
github.com/Microsoft/hcsshim v0.0.0-20190417211021-672e52e9209d/go.mod h1:Op3hHsoHPAvb6lceZHDtd9OkTew38wNoXnJs8iY7rUg=
github.com/NVIDIA/gpu-monitoring-tools v0.0.0-20200421213100-de959f43b55a h1:DploSoAcQ8tcaEjGnaPGt0I33v/dsc53Xam+OsOx3X8=
github.com/NVIDIA/gpu-monitoring-tools v0.0.0-20200421213100-de959f43b55a/go.mod h1:l0Cq257MSJMvg9URCXUjc8pgKY2SK1oSvIx6qG0bzzc=
github.com/NYTimes/gziphandler v0.0.0-20170623195520-56545f4a5d46/go.mod h1:3wb06e3pkSAbeQ52E9H9iFoQsEEwGN64994WTCIhntQ=
github.com/OpenPeeDeeP/depguard v1.0.0/go.mod h1:7/4sitnI9YlQgTLLk734QlzXT8DuHVnAyztLplQjk+o=
github.com/OpenPeeDeeP/depguard v1.0.1/go.mod h1:xsIw86fROiiwelg+jB2uM9PiKihMMmUx/1V+TNhjQvM=
github.com/PuerkitoBio/purell v1.0.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
github.com/PuerkitoBio/purell v1.1.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
github.com/PuerkitoBio/purell v1.1.1/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
github.com/PuerkitoBio/urlesc v0.0.0-20160726150825-5bd2802263f2/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
github.com/Rican7/retry v0.1.0/go.mod h1:FgOROf8P5bebcC1DS0PdOQiqGUridaZvikzUmkFW6gg=
github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6/go.mod h1:3eOhrUMpNV+6aFIbp5/iudMxNCF27Vw2OZgy4xEx0Fg=
github.com/agnivade/levenshtein v1.0.1/go.mod h1:CURSv5d9Uaml+FovSIICkLbAUZ9S4RqaHDIsdSBg7lM=
github.com/ajstarks/svgo v0.0.0-20180226025133-644b8db467af/go.mod h1:K08gAheRH3/J6wwsYMMT4xOr94bZjxIelGM0+d/wbFw=
github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc h1:cAKDfWh5VpdgMhJosfJnn5/FoN2SRZ4p7fJNX58YPaU=
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github.com/urfave/cli v1.20.0/go.mod h1:70zkFmudgCuE/ngEzBv17Jvp/497gISqfk5gWijbERA=
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github.com/valyala/fasthttp v1.2.0/go.mod h1:4vX61m6KN+xDduDNwXrhIAVZaZaZiQ1luJk8LWSxF3s=
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github.com/vishvananda/netlink v1.0.0/go.mod h1:+SR5DhBJrl6ZM7CoCKvpw5BKroDKQ+PJqOg65H/2ktk=
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go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
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golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
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golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
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golang.org/x/net v0.0.0-20170114055629-f2499483f923/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20170915142106-8351a756f30f/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
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golang.org/x/net v0.0.0-20180911220305-26e67e76b6c3/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
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google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55 h1:gSJIx1SDwno+2ElGhA4+qG2zF97qiUzTM+rQ0klBOcE=
google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
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gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4=
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gopkg.in/gemnasium/logrus-airbrake-hook.v2 v2.1.2/go.mod h1:Xk6kEKp8OKb+X14hQBKWaSkCsqBpgog8nAV2xsGOxlo=
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k8s.io/csi-translation-lib v0.18.2/go.mod h1:2lyXP0OP6MuzAEde802d4L/Rhzj4teNdNBKGVxVKV78=
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k8s.io/heapster v1.2.0-beta.1/go.mod h1:h1uhptVXMwC8xtZBYsPXKVi8fpdlYkTs6k949KozGrM=
k8s.io/klog v0.0.0-20181102134211-b9b56d5dfc92/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
k8s.io/klog v0.3.0/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
k8s.io/klog v1.0.0 h1:Pt+yjF5aB1xDSVbau4VsWe+dQNzA0qv1LlXdC2dF6Q8=
k8s.io/klog v1.0.0/go.mod h1:4Bi6QPql/J/LkTDqv7R/cd3hPo4k2DG6Ptcz060Ez5I=
k8s.io/kube-aggregator v0.18.2/go.mod h1:ijq6FnNUoKinA6kKbkN6svdTacSoQVNtKqmQ1+XJEYQ=
k8s.io/kube-controller-manager v0.18.2/go.mod h1:v45wCqexTrOltgwj92V4ve7hm5f70GQzi4a47/RQ0HQ=
k8s.io/kube-openapi v0.0.0-20200121204235-bf4fb3bd569c h1:/KUFqjjqAcY4Us6luF5RDNZ16KJtb49HfR3ZHB9qYXM=
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k8s.io/kube-proxy v0.18.2/go.mod h1:VTgyDMdylYGgHVqLQo/Nt4yDWkh/LRsSnxRiG8GVgDo=
k8s.io/kube-scheduler v0.18.2/go.mod h1:dL+C0Hp/ahQOQK3BsgmV8btb3BtMZvz6ONUw/v1N8sk=
k8s.io/kubectl v0.18.2/go.mod h1:OdgFa3AlsPKRpFFYE7ICTwulXOcMGXHTc+UKhHKvrb4=
k8s.io/kubelet v0.18.2 h1:DXXwda6vfm2zKNiL/eCYr0N3ab6CU26UkYioBHySUMQ=
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rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=
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sourcegraph.com/sqs/pbtypes v0.0.0-20180604144634-d3ebe8f20ae4/go.mod h1:ketZ/q3QxT9HOBeFhu6RdvsftgpsbFHBF5Cas6cDKZ0=
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108
main.go Normal file
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@ -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)
}
}
}

39
pkg/filewatcher/filewatcher.go Normal file
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@ -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
}

29
pkg/plugin/interface.go Normal file
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@ -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
}

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/*
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"
)

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/*
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
}

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/*
* 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
}
}
}
}

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/*
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(&current) && !IsGPUAssignedPod(&current) && !IsShouldDeletePod(&current) {
availablePods = append(availablePods, &current)
}
}
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
}

220
pkg/plugin/nvidia/utils.go Normal file
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/*
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
}

14
pod1.yml Normal file
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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

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volcano-device-plugin.yml Normal file
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# 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