构建 docker 容器时 gcsfuse 无法挂载答案

【问题标题】：gcsfuse cannot mount when building a docker container构建 docker 容器时 gcsfuse 无法挂载
【发布时间】：2018-10-16 09:02:53
【问题描述】：

我正在尝试在docker build 期间在我的容器中安装一个存储块。我读过其他线程，here、here 并理解这可能是一个特权问题。可以通过在docker run 进程中添加--privileged 标志来解决，但我想在构建阶段立即安装桶。

附加到容器，检查fuse 和gcsfuse 是否都已安装。 GOOGLE_APPLICATION_CREDENTIALS 已设置，访问 Google API 没问题。这是我遇到的错误。

Opening GCS connection...
Opening bucket...
Mounting file system...
daemonize.Run: readFromProcess: sub-process: mountWithArgs: mountWithConn: Mount: mount: running fusermount: exit status 1

stderr:
fusermount: fuse device not found, try 'modprobe fuse' first

Dockerfile

FROM gcr.io/google-appengine/python
.
.
.
ENV GCSFUSE_REPO=gcsfuse-jessie
RUN apt-get update && apt-get install -y ca-certificates \
    && echo "deb http://packages.cloud.google.com/apt $GCSFUSE_REPO main" > /etc/apt/sources.list.d/gcsfuse.list \
    && curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add - \
    && apt-get update && apt-get install -y gcsfuse

# Config fuse
RUN chmod a+r /etc/fuse.conf
RUN perl -i -pe 's/#user_allow_other/user_allow_other/g' /etc/fuse.conf

# Alter permission
RUN chmod a+w mount-folder

RUN gcsfuse -o --implicit-dirs bucket mount-folder

【问题讨论】：

您应该将此案例移至 ServerFault。

标签： docker google-cloud-platform gcsfuse

【解决方案1】：

要使用 gcsfuse 安装 bucker，您需要使用 --privileged 标志运行 docker。现在的问题是，“在这种情况下如何构建一个没有任何错误的 docker 镜像”？设想：在 Dockerfile 中，您有以下行：

RUN chmod +x launcher.sh
USER ubuntu
RUN mkdir db
RUN gcsfuse mybucket /home/username/mypath
EXPOSE 8000
CMD ["python3.6","manage.py","runmodwsgi"]

你看

Step 8/12 : USER ubuntu
 ---> Running in 0d880396010b
Removing intermediate container 0d880396010b
 ---> 390ed28965e1
Step 9/12 : RUN mkdir mypath
 ---> Running in b1f657562f24
Removing intermediate container b1f657562f24
 ---> 002ca425ac4c
Step 10/12 : RUN gcsfuse mybucket /home/username/mypath
 ---> Running in cae87fd47c1d
Using mount point: /home/username/mypath
Opening GCS connection...
Opening bucket...
Mounting file system...
daemonize.Run: readFromProcess: sub-process: mountWithArgs: mountWithConn: Mount: mount: running fusermount: exit status 1

stderr:
fusermount: fuse device not found, try 'modprobe fuse' first

The command '/bin/sh -c gcsfuse database_simrut /home/ubuntu/db' returned a non-zero code: 1

解决方案：删除线

RUN gcsfuse mybucket /home/username/mypath

从 Dockerfile 并创建一个启动器脚本，而不是具有以下内容：

#!/bin/bash
gcsfuse mybucket /home/username/mypath
python3.6 manage.py runmodwsgi

你的新 docker 应该是这样的：

RUN chown $USER:$USER $HOME
RUN chmod +x launcher.sh
USER ubuntu
RUN mkdir db
EXPOSE 8000
CMD ["./launcher.sh"]

输出：

Step 8/11 : USER ubuntu
 ---> Running in 83c0e73295c2
Removing intermediate container 83c0e73295c2
 ---> fad81733c14d
Step 9/11 : RUN mkdir mypath
 ---> Running in 5d83416f035e
Removing intermediate container 5d83416f035e
 ---> 4575ba28dc44
Step 10/11 : EXPOSE 8000
 ---> Running in 081dc094c046
Removing intermediate container 081dc094c046
 ---> 546c8edd43c3
Step 11/11 : CMD ["./launcher.sh"]
 ---> Running in 6780900e1b2d
Removing intermediate container 6780900e1b2d
 ---> 9ef9fd5af68c
Successfully built 9ef9fd5af68c

【讨论】：