k8s 调度 GPU

k8s 调度 GPU

 最近公司有项目想在 k8s 集群中运行 GPU 任务，于是研究了一下。下面是部署的步骤。

1. 首先得有一个可以运行的 k8s 集群. 集群部署参考 kubeadm安装k8s 

2. 准备 GPU 节点

2.1 安装驱动

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curl -fsSL https://mirrors.aliyun.com/nvidia-cuda/ubuntu1804/x86_64/7fa2af80.pub | sudo apt-key add - echo "deb https://mirrors.aliyun.com/nvidia-cuda/ubuntu1804/x86_64/ ./" > /etc/apt/sources.list.d/cuda.list   apt-get update apt-get install -y cuda-drivers-455 # 按需要安装对应的版本

2.2 安装 nvidia-docker2

<!-- 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 -->

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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   ## /etc/docker/daemon.json 文件中加入以下内容, 使默认的运行时是 nvidia {     "default-runtime": "nvidia",     "runtimes": {         "nvidia": {             "path": "/usr/bin/nvidia-container-runtime",             "runtimeArgs": []         }     } }   ## 重启 docker sudo systemctl restart docker

2.3 在 k8s 集群中安装 nvidia-device-plugin 使集群支持 GPU

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kubectl create -f https://raw.githubusercontent.com/NVIDIA/k8s-device-plugin/v0.7.3/nvidia-device-plugin.yml   # 如果因为网络问题访问不到该文件, 可在浏览器打开 https://github.com/NVIDIA/k8s-device-plugin/blob/v0.7.3/nvidia-device-plugin.yml ## 把文件内容拷贝到本地执行

    nvidia-device-plugin 做三件事情

• Expose the number of GPUs on each nodes of your cluster

• Keep track of the health of your GPUs

• Run GPU enabled containers in your Kubernetes cluster.

之后把节点加入 k8s 集群

以上步骤成功完成之后, 运行以下命令能看到类似下面图片中的内容说明插件安装好了

1 2	kubectl get pod --all-namespaces | grep nvidia kubectl describe node 10.31.0.17

 

 

3. 运行 GPU Jobs

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# cat nvidia-gpu-demo.yaml apiVersion: v1 kind: Pod metadata:   name: gpu-pod spec:   containers:     - name: cuda-container       image: nvidia/cuda:9.0-devel       resources:         limits:           nvidia.com/gpu: 2 # requesting 2 GPUs     - name: digits-container       image: nvidia/digits:6.0       resources:         limits:           nvidia.com/gpu: 2 # requesting 2 GPUs

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kubectl apply -f nvidia-gpu-demo.yaml   kubectl exec -it xxx-76dd5bd849-hlmdr -- bash   # nvidia-smi

  

以上就简单实现了 k8s 调度 GPU 任务。 

如有遇到问题可在留言区讨论。