在远程主机上运行docker run [英] `docker run` on a remote host

问题描述

是否可以(直接使用docker命令或docker-py API)从远程主机启动容器?

is it possible (using the docker command or the docker-py API directly) to start a container from a remote host?

让我们假设我有两台具有不同体系结构的机器: -A是x86机器 -B是ARM机器

Lets assume I have two machines that have different architectures: - A is an x86 machine - B is an ARM machine

我想使用我的A机器在B机器上运行一个容器.起初，我认为可以使用以下命令:

I would like to run a container on the B machine using my A machine. At first, I thought it was possible using this command:

[A]$> DOCKER_HOST=$MACHINE_B_IP:$MACHIN_B_PORT docker run hello-from-B

但是此命令实际上会拉出图像hello-from-B并尝试在最终以某些exec format error结尾的机器A上运行它，这显然导致无法将特定于ARM的图像运行到x86机器.

But this command actually pulls the image hello-from-B and tries to run it on the machine A which ends up on some exec format error cause obviously you can't run images that are specific to ARM to an x86 machine.

机器A和B之间的通信运行良好.我可以运行images或ps之类的命令，它可以为我带来预期的结果:

Communication between machine A and B is working well. I can run commands like images or ps and it gives me the expected results:

[A]$> DOCKER_HOST=$MACHINE_B_IP:$MACHIN_B_PORT docker images
REPOSITORY                TAG                 IMAGE ID            CREATED             SIZE
hello-from-B              <none>              fd5059044831        13 hours ago        1.26GB

我听说过docker-machine并且还没有尝试过，但是据我了解，这不能解决我的问题.

I've heard about docker-machine and haven't tried it yet, but from my understanding, this won't solve my problem.

有什么方法可以直接使用docker来实现.一种解决方法可能是使用ssh连接到远程主机并直接从远程主机使用docker客户端，但是我想尽可能避免这种解决方案.

Is there any way to achieve that using docker directly. A workaround might be to using ssh to connect to the remote host and use the docker client directly from the remote host, but I'd like to avoid this solution as much as possible.

预先感谢

TL; DR;

DOCKER_HOST=... docker run something如何在DOCKER_HOST上运行something，而不是在我的本地计算机上运行.

How can DOCKER_HOST=... docker run something runs something on the DOCKER_HOST rather than running it on my local machine.

推荐答案

如果可以在

if your targeted machine B could be created on one of these platform then I guess docker-machine would serve your needs. you would create your machine using docker-machine create --driver <..driver setup..> MACHINE_B then you activate it using eval $(docker-machine env MACHINE_B). docker-machine env MACHINE_B will print out some export statements:

export DOCKER_TLS_VERIFY="1"
export DOCKER_HOST="tcp://...."
export DOCKER_CERT_PATH="/..."
export DOCKER_MACHINE_NAME="MACHINE_B"

一旦您的计算机处于活动状态，就可以像在本地一样使用docker命令在MACHINE_B上进行远程操作.

once your machine is active, you can use the docker command as you would locally to act remotely on MACHINE_B.

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