When should you use a Docker container or a virtual machine?

The docker containers are suited for situations where you want to run multiple applications over a single operating system kernel. But if you have applications or servers that need to run on different operating system flavors, then virtual machines are required.

Why containers are preferred over virtual machines?

Container Pros: Containers are more lightweight than VMs, as their images are measured in megabytes rather than gigabytes. Containers require fewer IT resources to deploy, run, and manage. Containers spin up in milliseconds. Since their order of magnitude is smaller.

How is a Docker container different from a 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.

What is the difference between a hypervisor virtualization versus using a container eg Docker )?

The most significant difference between hypervisors and Dockers is the way they boot up and consume resources. Hypervisors are of two types – the bare metal works directly on the hardware while type two hypervisor works on top of the operating system. Docker, on the other hand, works on the host kernel itself.

Why is Docker more efficient in terms of resource utilization compared to virtual machines?

Docker is used as an alternative because they are more lightweight in terms of resources than virtual machines. By sharing operating systems, Docker applications can run while consuming a fraction of the resources of a virtual machine.

Why containers are more secure?

Containers actually have unique properties that provide invaluable cybersecurity benefits. They isolate applications, have integrated security capabilities, and because they’re frequently ripped and replaced, they provide a fast mechanism to overcome software vulnerabilities.