I use official centos image in docker hub.
My machine is mac that support vt-x.
But when I run centos on docker on mac, in centos, it doesn't show vmx in /proc/cpuinfo
I wonder that why guest os(centos) says that doesn't support vm even though my host support.
Is there any way that enable vt-x in centos on docker on my machine?
Related
i´m forced to use Win10 and Docker on my working PC. I like to set up a Virtualbox VM with Ubuntu and install docker on Ubuntu-VM. How can i map Docker from the VM to the Windows Host, run it in Ubuntu VM and use it on Win10 Host?
Thank you
This could be answered in https://serverfault.com/questions/225155/virtualbox-how-to-set-up-networking-so-both-host-and-guest-can-access-internet.
Another way that would come to my mind is using the Windows Subsystem for Linux.
But docker can also just run natively on a Windows host, which would save you the trouble.
We have Jenkins Build machines of Windows OS.
But, we have Linux EC2 instances for running our Apps.
So afraid, If we can use the Docker images built on windows to spin up containers in Linux machines.
Windows machine:
docker build -t "app-image-built-on-windows" .
Linux machine:
docker run app-image-built-on-windows
So is Docker images cross platform compatible?
Please give the answers considering the usage in PROD for long time.
if your docker image is linux based then yes you can build on windows.
Windows Subsystem for Linux (WSL) 2 introduces a significant architectural change as it is a full Linux kernel built by Microsoft, allowing Linux containers to run natively without emulation.
and if your build was successful, you can run the container on linux machines.
I installed the latest docker for windows from website.
there is no virtualbox installed. How windows run a linux container in my computer ? Is have a buildin linux kernel in windows?
It uses HyperV in newer releases. VirtualBox was used by docker-machine which is part of docker-toolkit.
Inside of the VM, there is a Linux kernel in a linuxkit based OS that is part of the moby project.
Connecting to the docker socket on Windows is described in this FAQ: https://docs.docker.com/docker-for-windows/faqs/#how-do-i-connect-to-the-remote-docker-engine-api
it says that prereqisite is windows 10 pro or enterprise edition because of hyper-v but ia that for running windows containers only or is pro/enterprise edition needed for running linux containers also?
If you don't have access to a Windows 10 version with Hyper-V, you can use the older Docker Toolbox product which relies on VirtualBox: https://www.docker.com/products/docker-toolbox
As #friism pointed out w/o HyperV you have to use the old Docker toolbox option. This is due to the fact that the docker daemon does not run on Windows natively. Instead it started a small Linux machine (on windows using hyperV); inside this linux machine is where all the docker and tools are executed. The desktop client is simply a nice UI to send the commands to the virtualized linux machine.
I'm just getting started with Docker and use a MacBook Pro for development work. I see the Docker instructions recommend using Virtual Box and Boot2Docker in this environment. Anyone know if it would also work in a Linux VM in Parallels?
You can totally run Docker in another kind of Linux VM.
If you already have some kind of Linux VM running, just check Docker installation instructions for the distro installed in the Linux VM.
If you don't have a Linux VM, or if you don't want to touch your existing Linux VM, you can also download boot2docker, and when creating the new VM, just attach the boot2docker image as a virtual CD-ROM image or a virtual hard disk image (yes, it actually supports both).