I want to run a Linux Docker-Container on Windows Server-2022 without to login to windows and starting Docker Desktop.
I managed to create a Windows-Service for dockerd. But there I can not create Linux-Containers. Errormessage:
docker: image operating system "linux" cannot be used on this platform.
As docker runs as a Windows-Service, I can not change the Engine with dockerCLI, or I don't no how. This solution changes the Engine for my Windows-User but not for the Windows-Service. On my Windows-User I can run Linux-Containers without a Problem.
My Question is: How can I run a Linux Docker-Container permanently on Windows Server 2022 without the need to login on Windows?
You can achieve this by installing WSL2 on the machine and run docker through WSL2
https://techcommunity.microsoft.com/t5/itops-talk-blog/using-wsl-2-on-windows-server-2022-to-run-linux-containers/ba-p/3624745
Related
How to run linux and windows container on docker running in windows server 2022?
It is possible with lcow but this is deprecated now.
When running in experimental mode it is working because of lcow, but this is deprecated now.
To run windows containers on windows server read this, looks like a step-by-step howto: https://learn.microsoft.com/en-us/virtualization/windowscontainers/about/
To run linux containers on windows server, well, you could do WSL2 on windows server to have a linux in a minivm and install docker on it, but whats the point, I would not bother with it, just get a linux server for linux containers.
I am using a mac and apparently installing Docker Desktop is mandatory to use Docker in macOS. Why Docker Desktop is required in Mac and Windows OS, and not in Linux? What purpose Docker Desktop serves? I have tried googling it but can't find appropriate answers.
docker desktop for both mac and windows is using a Linux virtual machine behind the scenes for running regular docker daemon.
Reference
That state docker for windows is using WSL2 which is running a VM.
Here there is a mention of backing up docker VM on docker for mac.
Docker Desktop handles the setup and teardown of lightweight VMs on both Windows and macOS, using Hyper-V on Windows desktops and Hyperkit on macOS.
From docker blog .
When using Docker for Windows, you must choose to either use Windows or Linux containers, but you can't use both at the same time. What is the technical reason(s) for this? It's a little counter-intuitive, since each container has its own isolated operating system.
Linux containers on Docker for Windows are not handled by windows itself, but they are using Hyper-V Linux VM - MobyLinuxVM. Hence the necessity to switch between Linux and Windows.
However starting from Windows 1709 and Docker in edge version you can try out linux containers on windows - see: https://blog.docker.com/2017/09/docker-windows-server-1709/
Update
As #v.karbovnichy brought up, technically on Docker for Windows you "can" run linux and windows containers simultanously - you can use docker-machine command to create additional linux-based virtual machine that will run your linux containers. Then, you can connect them into one swarm and, with a dose of good will, you will run linux and windows containers simultaneously on same machine.
docker client command itself can connect to both linux or windows docker-server and "manage" both of them - check docker login - it's widely used in server configurations.
However as stated above, true running linux and windows containers next to each other is in preview state.
Docker ecosystem on your Windows machine contains several components.
One is Docker command line: the docker command that you use for everything-management. The second one is Docker daemon - A self-sufficient runtime for containers, the core.
Docker daemons for Linux Containers and Windows Containers are different, but they listen for connections from the docker client on the same pipe. So one needs to be stopped for other to be started. This is the technical reason that you asked for.
However, you can observe that containers started for ex. in MobyLinuxVM is still running and available for connections when you switch to Windows containers. The only thing here is that you cannot manage them because the Docker daemon for Windows does not know how to manage Linux containers in MobyLinuxVM.
UPDATE: As described in this post,
Docker for Windows 18.02 now supports Linux and Windows containers running side-by-side via LCOW, using a single Docker daemon.
So actually now you can use one docker daemon to manage both worlds, it's just about using the new --platform flag in docker pull.
I have Windows 10 with Windows Subsystem for Linux installed (Bash on Ubuntu on Windows), have Docker installed on Windows, and a Docker client running on the linux subsystem per this walkthrough. All works well, however, when I want to be able to access a volume on my default mount "/mnt/c/../". I am using the mount flags at docker launch and have tried both:
docker run -v $PWD:/mount
docker run --mount type=bind,source="$(PWD)",target=/mount
and most variations shown here.
I have reason to think this is a permissions issue. When launching from the linux subsystem, there is always one empty folder from the original source directory. When launching from windows powershell, everything is fine. The only difference between the two would be the docker client being used.
I have shared C in the docker host settings in windows, however, do I need to do something similar for the client inside of windows subsystem for linux?
Versions:
Docker client: Docker version 18.03.0-ce, build 0520e24
Docker host: Docker version 18.03.0-ce-win59 (16762)
I had the same issue with the same set-up. After a lot of trial and error and googling, here is what resolved the issue:
Change Windows password to not include special characters.
Reset credentials for docker.
Worked! Weird bug.
Can anyone tell me whether or not it is possible to host Linux-based docker containers on Windows Server 2016 TP5?
I realize that it would have to be through virtualization, but is it possible using the 'standard' Microsoft installation (MSDN Docs) to host linux images? I know it supports Hyper-V isolation, but is that solely for isolation and not for cross platform compatibility?
Given only a single server, what is the best way to be able to host both Windows-based and Linux-based docker containers?
Do I need to install docker twice?
Should I run a Ubuntu server in a VM through Hyper-V?
Should I use the Docker Toolbox (Docker for Windows doesn't support Server 2016 yet)
This is all just for toying around at home, not an actual production environment.
It appears that there is no way of virtualizing Linux Docker containers on Windows other than installing the Docker Toolbox or running it in a VM.
Personally, I installed Hyper-V and an Ubuntu Server VM in that.
Hyper-V containers in Docker for Windows are only for isolation, not cross platform functionality.