Containers are a solution when making the software run reliably when moved from one computing environment to another. This is very very useful in test, staging and production environments.
Perhaps you may have experience with problems when moving your software on different environments because each environment is not identical to each other.
Even you run the same software on the same environment in two different machines, you may get problems because of mismatch versions.
How comes making containers solve this problem?
The container is an entire runtime environment. It can be bundled with your application, its all dependencies, binaries, libraries and so on which needed to run it. After containerized your software you can run it on any environment without any problem.
Connection with Containers and Docker?
Docker has become synonymous with container technology because it has been the most successful at popularizing it. But container technology is not new; it has been built into Linux over 10 years, and similar operating been offered by FreeBSD jails, AIX Workload Partitions, and Solaris Containers.
When you have divided your software as microservices, you need to create each service as a container. at last, you will multiple containers and need to manage together. to manage containers in a single software, you might need a system to make it easier.
Docker & Kubernetes
These two tools are the most popular tools to build and manage containers.
Docker which was built on open standards and functions inside most common operating environments, including Linux, Windows, and other on-premises or cloud-based infrastructures. Docker is very easy to set up and configures other than Kubernetes. When it comes to managing a huge number of containers, Kubernetes is the best solution.
In Google Company, Two billion containers a week means that for every second of every minute of every hour of every day, Google is firing up on average some 3,300 containers. It’s probably started over 40,000 since you began reading this article. You can see why kubenetes was invented by Google.
Kubernetes orchestrates the operation of multiple containers in harmony together. It manages areas like the use of underlying infrastructure resources for containerized applications such as the amount of computing, network, and storage resources required. Orchestration tools like Kubernetes make it easier to automate and scale container-based workloads for live production environments.
If you choose Docker swarm to use in your production, check this article: How and When to use Docker Swarm?
Next article brings you, Prerequisites for Setup Kubenetes Cluster.
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