Docker, and containers, are a new way of running software that is revolutionizing software development and delivery. What is Docker? Docker is a new technology that allows development teams to build, manage, and secure apps anywhere. A container is a special type of process that is isolated from other processes. Containers are assigned resources that no other process can access, and they cannot access any resources not explicitly assigned to them.
If you’ve been anywhere near the IT industry over the last five years, you’ve very likely heard of the container platform Docker. Docker and containers are a new way of running software that is revolutionizing software development and delivery.
Docker is a new technology that allows development teams to build, manage, and secure apps anywhere.
It’s not possible to explain what Docker is without explaining what containers are, so let’s look at a quick explanation of containers and how they work.
A container is a special type of process that is isolated from other processes. Containers are assigned resources that no other process can access, and they cannot access any resources not explicitly assigned to them.
So what’s the big deal?
Processes that are not “containerized” can ask the operating system for access to any file on disk or any network socket.
Until containers became widely available, there was no reliable, guaranteed way to isolate a process to its own set of resources. A properly functioning container has absolutely no way to reach outside its resource “sandbox” to touch resources that were not explicitly assigned to it.
For example, two containers running on the same computer might as well be on two completely different computers, miles away from each other. They are entirely and effectively isolated from each other.
This isolation has several advantages:
DevOps lifecycle delineates the journey of product development from the start till the end. Its main objective is to eradicate all discrepancies and achieve delivery of products at pace.
🔥Edureka DevOps Training: https://www.edureka.co/devops-certification-training This Docker Jenkins Tutorial video will help you understand how to run an enti...
Starts at 3:45. This week I'm joined by Docker's Nicolas De Loof and Justin Cormack to talk about creating a Compose file standard, the latest docker-compose...
This entry-level guide will tell you why and how to Dockerize your WordPress projects.
DevOps is so much more than just about how a company develops new features, apps, and software solutions. The approach covers everything from learning how to improve the working environment for teams of engineers to the best tools to use to achieve operational (and developmental) effectiveness and efficiency. The combination allows companies to rely on DevOps for better output quality and improved agility thanks to an inherently better working culture.