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我正在使用调用 docker 映像的 cloudinit 文件启动 GCE 服务器。启动时,拉取 docker 映像失败,但如果我在登录时运行相同的服务,它会成功。我希望它在启动时工作。

查看服务日志,似乎它错误地为 docker pull 加上前缀docker.io,因此作业失败。

我可以做些什么来防止这种情况发生吗?在尝试 docker pull 之前,我是否可能需要等待或检查要加载的其他内容?

这是我的云初始化文件:

#cloud-config

users:
- name: shinyuser
  uid: 2000

write_files:
- path: /etc/systemd/system/shinyserver.service
  permissions: 0644
  owner: root
  content: |
    [Unit]
    Description=Shiny server

    [Service]
    ExecStart=/usr/bin/docker run --name=vdshinyserver -p 80:3838 -v /home/shinyuser/shinyapps/:/srv/shiny-server/ -v /home/shinyuser/srv/shinylog/:/var/log/ rocker/shiny
    ExecStop=/usr/bin/docker stop vdshinyserver

runcmd:
- systemctl daemon-reload
- systemctl start shinyserver.service 

这是日志:

mark@xxxshiny ~ $ sudo journalctl -u shinyserver
-- Logs begin at Wed 2016-10-05 08:39:06 UTC, end at Wed 2016-10-05 08:39:46 UTC. --
Oct 05 08:39:11 xxxshiny docker[1016]: Unable to find image 'rocker/shiny:latest' locally
Oct 05 08:39:26 xxxshiny docker[1016]: Pulling repository docker.io/rocker/shiny
Oct 05 08:39:31 xxxshiny docker[1016]: /usr/bin/docker: Tag latest not found in repository docker.io/rocker/shiny.
Oct 05 08:39:31 xxxshiny docker[1016]: See '/usr/bin/docker run --help'.
Oct 05 08:39:31 xxxshiny docker[1045]: Error response from daemon: No such container: vdshinyserver

mark@visit-dubai-shiny ~ $ sudo systemctl start shinyserver.service
mark@visit-dubai-shiny ~ $ sudo journalctl -u shinyserver
...
Oct 05 08:42:22 xxxshiny docker[1117]: Unable to find image 'rocker/shiny:latest' locally
Oct 05 08:42:23 xxxshiny docker[1117]: latest: Pulling from rocker/shiny
Oct 05 08:42:23 xxxshiny docker[1117]: a84f66826a7f: Pulling fs layer
Oct 05 08:42:23 xxxshiny docker[1117]: aaf7c0da390d: Pulling fs layer
...etc...
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1 回答 1

1

我编辑了我的 cloudinit 以匹配Docker 文档中的内容,以在文件中包含对的要求,docker.service现在它可以工作了:

#cloud-config

users:
- name: shinyuser
  uid: 2000

write_files:
- path: /etc/systemd/system/shinyserver.service
  permissions: 0644
  owner: root
  content: |
    [Unit]
    Description=VisitDubai Shiny server for reporting
    Requires=docker.service
    After=docker.service

    [Service]
    Restart=always
    ExecStart=/usr/bin/docker run --name=vdshinyserver -p 80:3838 -v /home/shinyuser/shinyapps/:/srv/shiny-server/ -v /home/shinyuser/srv/shinylog/:/var/log/ rocker/shiny
    ExecStop=/usr/bin/docker stop vdshinyserver
于 2016-10-05T09:07:11.580 回答