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What is the difference between Docker container and virtual machine?
Docker is container based technology and containers are just user space of the operating system. In Docker, the containers running share the host OS kernel. A Virtual Machine, on the other hand, is not based on container technology. They are made up of user space plus kernel space of an operating system.
Which is better VM or container?
VMs are capable of running far more operations than a single container, which is why they are the traditional way monolothic workloads have been (and are still today) packaged. But that expanded functionality makes VMs far less portable because of their dependence on the OS, application, and libraries.
Can Docker run on Debian?
The docker service starts automatically on Debian based distributions. On RPM based distributions, such as CentOS, Fedora, RHEL or SLES, you need to start it manually using the appropriate systemctl or service command.
Which OS is better for Docker?
An operating system that provides a kernel optimized for sharing among multiple containers would be the most suitable. One of the most common choices is Ubuntu, as it provides the latest kernels with the latest capabilities. Ubuntu is derived off Debian OS, which is another common choice for the host OS.
Is Docker faster than virtual box?
Are containers faster than virtual machines? The answer may seem to be yes. But if you look closely, you realize that, although Docker does offer some important advantages in the realm of resource consumption, Dockerized apps do not necessarily have better performance.
What’s the difference between virtual machine and Docker container?
The operating system support of Virtual machine and Docker container is very different. From the image above, you can see each virtual machine has its guest operating system above the host operating system, which makes virtual machines heavy.
What’s the difference between Docker and guest OS?
Guest OS can be any OS, like Linux or Windows, irrespective of host OS. In contrast, Docker containers host on a single physical server with a host OS, which shares among them. Sharing the host OS between containers makes them light and increases the boot time.
Which is better for Docker, alpine or Debian?
As small as possible. Regarding the footprint, Alon showed you can slim down Debian so the footprint advantage is small. If that isn’t enough we can take it one step further and use Debian Embedded to slim things down further by using BusyBox, and smaller libc versions, just like Alpine.
What’s the difference between a VM and a container?
Containers are an abstraction at the app layer that packages code and dependencies together. Multiple containers can run on the same machine and share the OS kernel with other containers, each running as isolated processes in user space. Containers are only megabytes in size and take just seconds to start, versus gigabytes and minutes for a VM.