CentOS7安裝nvidia-docker2

1.安裝docker-ce

    因爲nvidia-docker2依賴docker-ce，所以得先安裝docker-ce。

 1.1 如果主機上已經安裝了docker，則先運行如下命令卸載

service docker stop
yum remove docker

 1.2 安裝yum管理依賴包

sudo yum install -y yum-utils device-mapper-persistent-data lvm2

 1.3添加docker-ce倉庫命令

sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

如果報以下錯誤

 sudo yum-config-manager --add-repo  https://download.docker.com/linux/centos/docker-ce.repo
  File "/bin/yum-config-manager", line 135
    except yum.Errors.RepoError, e:
                               ^
SyntaxError: invalid syntax

 則運行如下命令修改/bin/yum-config-manager中的配置

vi /bin/yum-config-manager

 按下 i 字母

把文件開頭 #!/usr/bin/python  -tt  改爲  #!/usr/bin/python2  -tt

 再按下esc鍵，鍵入:wq!保存。最後再次執行添加docker-ce倉庫命令

1.4 運行如下安裝docker-ce命令

sudo yum install docker-ce docker-ce-cli containerd.io

如果報以下錯誤 

Transaction check error:
  file /usr/bin/docker from install of docker-ce-cli-1:19.03.8-3.el7.x86_64 conflicts with file from package docker-common-2:1.13.1-109.gitcccb291.el7.centos.x86_64
  file /usr/bin/dockerd from install of docker-ce-3:19.03.8-3.el7.x86_64 conflicts with file from package docker-common-2:1.13.1-109.gitcccb291.el7.centos.x86_64

Error Summary

則先運行如下命令刪除docker殘餘的組件

sudo yum erase docker-common-2:1.13.1-109.gitcccb291.el7.centos.x86_64

再次運行安裝docker-ce命令

1.5 開機啓動/啓動/查看狀態 

systemctl enable docker    // 設置開機啓動
systemctl start docker    // 啓動docker
systemctl status docker   //查看狀態

2.安裝nvidia-docker2

2.1設置倉庫

distribution=$(. /etc/os-release;echo $ID$VERSION_ID)
curl -s -L https://nvidia.github.io/nvidia-docker/$distribution/nvidia-docker.repo | \
  sudo tee /etc/yum.repos.d/nvidia-docker.repo

2.2更新倉庫中的key

DIST=$(sed -n 's/releasever=//p' /etc/yum.conf)
DIST=${DIST:-$(. /etc/os-release; echo $VERSION_ID)}
sudo yum makecache

2.3安裝nvidia-docker2

sudo yum install nvidia-docker2

2.4 重新載入docker daemon的設定

sudo pkill -SIGHUP dockerd

2.5 測試是否安裝成功

docker run --runtime=nvidia --rm nvidia/cuda nvidia-smi

第一次運行會花幾分鐘下載組件，最後顯示如下結果則表示安裝成功

docker run --runtime=nvidia --rm nvidia/cuda nvidia-smi
Wed Mar 25 04:58:46 2020       
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 418.87.00    Driver Version: 418.87.00    CUDA Version: 10.1     |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|===============================+======================+======================|
|   0  GeForce RTX 208...  Off  | 00000000:1A:00.0 Off |                  N/A |
| 16%   26C    P8     1W / 250W |      0MiB / 10989MiB |      0%      Default |
+-------------------------------+----------------------+----------------------+