Question

我正在使用cloudinit文件启动GCE服务器，该文件调用docker镜像。在启动时，拉动docker镜像失败，但是如果我在登录时运行相同的服务则成功。我希望它能在推出时发挥作用。

查看服务日志，似乎错误地为docker pull添加了docker.io，因此失败了。

我有什么办法可以防止这种情况发生吗？在尝试使用docker之前，我是否需要等待或检查其他内容？

这是我的cloud-init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

以下是日志：

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...

Answer 1

我编辑了我的cloudinit，以匹配Docker documentation中的{cloud}以在文件中包含docker.service的要求，现在它可以正常运行：

#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

从cloud-init错误的前缀启动运行docker＆＃34; docker.io＆＃34;图像名称

1 个答案: