# Copyright 2022 Google Inc. 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.

# The Dockerfile and other source for this daemonset are in
# https://cos.googlesource.com/cos/tools/+/refs/heads/master/src/cmd/cos_gpu_installer/
#
# This is the same as ../../daemonset.yaml except that it assumes that the
# docker image is present on the node instead of downloading from GCR. This
# allows easier upgrades because GKE can preload the correct image on the
# node and the daemonset can just use that image.

apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: nvidia-driver-installer
  namespace: kube-system
  labels:
    k8s-app: nvidia-driver-installer
spec:
  selector:
    matchLabels:
      k8s-app: nvidia-driver-installer
  updateStrategy:
    type: RollingUpdate
  template:
    metadata:
      labels:
        name: nvidia-driver-installer
        k8s-app: nvidia-driver-installer
    spec:
      priorityClassName: system-node-critical
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
            - matchExpressions:
              - key: cloud.google.com/gke-accelerator
                operator: Exists
              - key: cloud.google.com/gke-gpu-driver-version
                operator: DoesNotExist
      tolerations:
      - operator: "Exists"
      hostNetwork: true
      hostPID: true
      volumes:
      - name: dev
        hostPath:
          path: /dev
      - name: vulkan-icd-mount
        hostPath:
          path: /home/kubernetes/bin/nvidia/vulkan/icd.d
      - name: nvidia-install-dir-host
        hostPath:
          path: /home/kubernetes/bin/nvidia
      - name: root-mount
        hostPath:
          path: /
      - name: cos-tools
        hostPath:
          path: /var/lib/cos-tools
      - name: nvidia-config
        hostPath:
          path: /etc/nvidia
      initContainers:
      - image: "cos-nvidia-installer:fixed"
        imagePullPolicy: Never
        name: nvidia-driver-installer
        resources:
          requests:
            cpu: 150m
        securityContext:
          privileged: true
        env:
        - name: NVIDIA_INSTALL_DIR_HOST
          value: /home/kubernetes/bin/nvidia
        - name: NVIDIA_INSTALL_DIR_CONTAINER
          value: /usr/local/nvidia
        - name: VULKAN_ICD_DIR_HOST
          value: /home/kubernetes/bin/nvidia/vulkan/icd.d
        - name: VULKAN_ICD_DIR_CONTAINER
          value: /etc/vulkan/icd.d
        - name: ROOT_MOUNT_DIR
          value: /root
        - name: COS_TOOLS_DIR_HOST
          value: /var/lib/cos-tools
        - name: COS_TOOLS_DIR_CONTAINER
          value: /build/cos-tools
        volumeMounts:
        - name: nvidia-install-dir-host
          mountPath: /usr/local/nvidia
        - name: vulkan-icd-mount
          mountPath: /etc/vulkan/icd.d
        - name: dev
          mountPath: /dev
        - name: root-mount
          mountPath: /root
        - name: cos-tools
          mountPath: /build/cos-tools
        command:
        - bash
        - -c
        - |
          echo "Checking for existing GPU driver modules"
          if lsmod | grep nvidia; then
            echo "GPU driver is already installed, the installed version may or may not be the driver version being tried to install, skipping installation"
            exit 0
          else
            echo "No GPU driver module detected, installing now"
            /cos-gpu-installer install --version=latest || exit 1
            chmod 755 /root/home/kubernetes/bin/nvidia
          fi
      - image: "gcr.io/gke-release/nvidia-partition-gpu@sha256:e226275da6c45816959fe43cde907ee9a85c6a2aa8a429418a4cadef8ecdb86a"
        name: partition-gpus
        env:
          - name: LD_LIBRARY_PATH
            value: /usr/local/nvidia/lib64
        resources:
          requests:
            cpu: 150m
        securityContext:
          privileged: true
        volumeMounts:
        - name: nvidia-install-dir-host
          mountPath: /usr/local/nvidia
        - name: dev
          mountPath: /dev
        - name: nvidia-config
          mountPath: /etc/nvidia
      containers:
      - image: "gke.gcr.io/pause:3.8@sha256:880e63f94b145e46f1b1082bb71b85e21f16b99b180b9996407d61240ceb9830"
        name: pause