如何在马拉松比赛中使用体积 [英] How to use volumes-from in marathon

问题描述

我与mesos +马拉松+ docker合作已经有一段时间了，但有时我陷入了困境.目前，我尝试处理持久性容器，并尝试使用"volumes-from"参数，但由于无法识别如何确定要放入的数据框的名称，因此无法正常工作它作为json中的键.我在此处

I'm working with mesos + marathon + docker quite a while but I got stuck at some point. At the moment I try to deal with persistent container and I tried to play around with the "volumes-from" parameter but I can't make it work because I have no clue how I can figure out the name of the data box to put it as a key in the json. I tried it with the example from here

    {
    "id": "privileged-job",
    "container": {
        "docker": {
            "image": "mesosphere/inky"
            "privileged": true,
            "parameters": [
                { "key": "hostname", "value": "a.corp.org" },
                { "key": "volumes-from", "value": "another-container" },
                { "key": "lxc-conf", "value": "..." }
            ]
        },
        "type": "DOCKER",
        "volumes": []
    },
    "args": ["hello"],
    "cpus": 0.2,
    "mem": 32.0,
    "instances": 1
}

我真的很感谢任何帮助:-)

I would really appreciate any kind of help :-)

推荐答案

据我所知: docker --volume-from接受容器的ID或名称.

From what I know : docker --volume-from take the ID or the name of a container.

由于您的数据容器也是与Marathon一起启动的，因此它会获得一个ID(而不是如何从Marathon中获取此ID)和该形式的名称:mesos-0fb2e432-7330-4bfe-bbce-4f77cf382bb4，它与Mesos中的任务ID或Docker ID不相关.

Since your datacontainer is launch with Marathon too, it get an ID (not sur how to get this ID from marathon) and a name of that form : mesos-0fb2e432-7330-4bfe-bbce-4f77cf382bb4 which is not related to task ID in Mesos nor docker ID.

解决方案是为您的web-ubuntu应用程序编写如下内容:

The solution would be to write something like this for your web-ubuntu application :

"parameters": [
    { "key": "volumes-from", "value": "mesos-0fb2e432-7330-4bfe-bbce-4f77cf382bb4" }
]

由于该docker-ID在Marathon中是未知的，因此使用以Marathon开始的datacontainer是不切实际的.

Since this docker-ID is unknown from Marathon it is not practical to use datacontainer that are started with Marathon.

您可以尝试直接使用Docker启动数据容器(不使用Marathon)，并像以前一样使用它，但是由于您事先不知道web-ubuntu的调度位置(除非您添加了强制它的约束) )不切实际.

You can try to start a datacontainer directly with Docker (without using Marathon) and use it as you do before but since you don't know in advance where web-ubuntu will be scheduled (unless you add a constraint to force it) it is not practical.

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