Questions tagged [virtualization]

Virtualisation is a form of machine abstraction that creates a simulated, or virtualised, instance of a machine using physical hardware. It provides a very high degree of isolation between multiple machines on the same host.

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Docker vs Virtualisation

I am trying to understand the underlining architecture of Docker. The diagram that's been shown everywhere claims that in contrast with Virtualisation technologies such as "VirtualBox", ...
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Feasibility of using Kubernetes and Docker

I'm developing within an automation team today the process of running the "robot" which is basically running the project in python occurs using the Rundeck orchestrator, as follows: An ...
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3 votes
1 answer
65 views

What is a golden image?

Is there a defacto understanding of what a golden image is? I've had it come up in requirements to satisfy cloud audits. What's the meaning of "Golden" when it comes to audit and compliance,...
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How to containerise developement of GUI apps (C++, C#)

I'm looking for a solution to virtualise the environment for the development of C++/C# Windows apps that have a UI that display live video. The apps needs to run native on the local machine during ...
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0 answers
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public network and local directory did not get mounted as in virtualbox

I decided to switch from using virtualbox to hyperv on windows 10 professional. I am using vagrant to spin vm . the vagrant file is shown below. VAGRANTFILE_API_VERSION = "2" ...
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1 vote
1 answer
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Describe the machine and service infrastructure with a diagram [closed]

We have a provider that manages a Baremetal server where there are many VPSs inside and each VPS manages some services. We would like to have the infrastructure described in terms of machines (servers,...
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  • 113
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1 answer
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Does RAM Come Into The Container vs VM Decision?

I am currently running a Java trading system on a VM that needs ~32 GB RAM and runs (almost) 24/7. There are a couple of engines linked to it that require 4GB + 8BG respectively. I am considering ...
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3 votes
0 answers
529 views

Where are Docker containers stored on disk?

I'm learning about Docker. I feel stuck at the moment, I think that I have some wrong concepts about how Docker works, and that shadows how it actually works, but I can't really locate the problem. I ...
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1 vote
1 answer
210 views

Why is it necessary to have virtual machines to run multiple server instances?

I'm trying to learn about virtualization and containers. In an educational video it is said that the introduction of virtual machines was a big deal because it made companies available to run multiple ...
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3 votes
0 answers
108 views

Is running linux container on windows aws instance possible?

what I'm trying to achieve is running a Linux(ubuntu LST) container inside a windows server 2019 OS. The problem is that the windows OS runs as an AWS instance. There have been problem for me trying ...
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  • 131
9 votes
1 answer
475 views

Automate custom docker image deployment on AWS

This question is related to my previous one - but a bit more descriptive. I am trying to build automate the generation and deployment of a docker container. The docker container is created with packer....
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  • 105
1 vote
1 answer
161 views

How to automate installing an ISO in a VM?

We're trying to develop CI/CD processes to automate testing and installing our builds. Ya know, as one does in DevOps. The end result of our build process are ISOs that use Red Hat Kickstart to ...
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0 votes
1 answer
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Dev environment for legacy Visual Studio code?

I work at a small company that has several legacy projects that all require different versions of visual studio to run. The company has servers on site and I have a small cloud budget. I want to set ...
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2 votes
2 answers
74 views

What artifact managers are available in GCP?

I use artifactory and nexus, but I wonder what artifact manager could be used in GCP? Is there a managed artifact manager or do I have to run one myself in a VM?
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2 votes
2 answers
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How can I test native macOS UI software in a container before deployment?

As part of the CI setup, I'd like to run (automated) tests on native macOS GUI software in a 'safe environment' (i.e. without messing with the host software installation too much). Virtual machines (...
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1 vote
2 answers
244 views

What are the differences between application virtualization, emulation layer, and container virtualization?

What are the differences and relations between application virtualization (such as Flatpak), emulation layer (such as wine, cygwin), and container virtualization (such as Docker)? I have been trying ...
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1 vote
1 answer
65 views

How does Vagrant differ from VirtualBox and similar software, if at all?

Both Vagrant and VirtualBox (or their alternatives) seem to me to virtualize an OS on top of another OS, How do they differ from one another essentially, if at all?
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2 votes
1 answer
63 views

Are all virtualization (OS/above-OS) utilities DevOps utilities?

Are all virtualization (OS/above-OS) utilities commonly considered DevOps utilities? These could be OS virtalization utilities like VirtualBox and Vagrant and maybe also WSL is considered as such and ...
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1 vote
1 answer
404 views

How to install docker in Raspbian Virtual Machine

I first installed docker in raspberry pi using: https://iotbytes.wordpress.com/setting-up-docker-on-raspberry-pi-and-running-hello-world-container/ which successfully did. I tried doing the same with ...
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3 votes
2 answers
333 views

Open source private cloud VM provisioning for container workload

There is a new generation of tooling developed that tries to integrate different IaaS providers (Azure/AWS/GCE/DigitalOcean) into one "infrastructure codebase". It's dubbed "Cloud Native" and it's ...
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2 votes
1 answer
38 views

Do not show all docker containers to a particular user

I want to use one server to host multiple docker-containers. I want to give another user a possibility to manage new docker-containers, but I do not want to give him access to all other containers, ...
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2 votes
0 answers
167 views

KATA vs NABLA Containers Isolation [closed]

I am struggling with retrieving the difference between : KATA and IBM NABLA. Or better, what is the added value of the one over the other? Both come with enhancement of containers isolation: ...
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1 vote
1 answer
192 views

Possibility of container breakout compared to VM (virtual machines)

What is exactly the (higher) vulnerability at least theoretically of a container compared to VM? given, all security recommendations are implemented (like, user context is root, no host sensitive ...
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5 votes
3 answers
156 views

Other tools to provision virtual machines

I've been using vagrant for provisioning virtual machines (Linux only) and so far I've been happy with it. The two things I dislike about it - the hardcoded dependency on the user vagrant as well as ...
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3 votes
2 answers
415 views

How do I autostart Jenkins agent machines?

To save money, I would like a large number of agent machines to be stopped and started up only when needed. Better yet, a single VM should be copied and launched on demand. I am using Google Cloud ...
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1 vote
1 answer
41 views

Error starting cloned VM in Vsphere Client

I cloned a VM in Vsphere Client as described here. When I try to start it, it unexpectedly reboot over and over itself. I get this error in console: Call "EnvironmentBrowser.QueryTargetCapabilities" ...
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5 votes
1 answer
141 views

Pause/Suspend guest in KVM without virsh and libvirtd

I have installed KVM without libvirt/virsh and virtualmanager. Packages which installed are kvm qemu-kvm bridge-utils libguestfs-tools How can I pause/suspend VM in this case?
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10 votes
3 answers
1k views

How to test VM provisioning script without provisioning

Currently I'm on a state that testing costs me money and a lot of time... Background: I'm deploying VMs at softlayer and using a post-deployment script(bash) that will install every software that I ...
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2 votes
1 answer
42 views

Scheduling collisions possible in IaC - Infrastructure as Code - solutions vs. software defined data center?

To clarify the terms first, Infrastructure as Code (IaC) can be delivered with upcoming technologies like Docker Swarm, Kubernetes, OpenShift, OpenStack and possiby some others run on bare metal. - ...
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2 votes
1 answer
143 views

Error Vagrant Provisioning with Virtual Box on Fedora

I'm Provisioning Vagrant Box with Virtual-box on Fedora 26. $ vagrant -v Vagrant 1.9.1 $ virtualbox -v virtualbox 5.1 Below is the error; muhammadtaqi@localhost etc]$ vagrant up Bringing machine '...
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2 votes
1 answer
647 views

Debug Docker DNS

In a stack with higher number of services it seems that Docker DNS does not work anymore which leads to effects that container's names are not known even to themselves. While I have filed this bug, I ...
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