In the last few decades, Docker has become one of the most prominent containerization platforms in the realm of software development. With the rise of cloud computing, it is a matter of time before it becomes a significant skill for developers around the world. As more and more organizations are embracing DevOps and containerization practices, it keeps on becoming massively essential for developers to better understand Docker and how it works.
Irrespective of whether you are a seasoned developer or someone who is just getting in the field to build a massive career, understanding in-depth concepts and workings of Docker is a must! That is why the experts always suggest an all-rounded docker course for the aspirants.
Wondering how a docker course can help you take the big step for your future? In this blog, we will take a look at how you can pave the way for yourself by taking this course.
Dockers and Containers
In its simplest explanation, Docker is basically a container platform. To explain it, we first need to talk about containers. Containers basically bundle the application code with operating system libraries into a runnable package. It basically means that the application can run on any system that supports the format of the container, even if it runs on a totally different operating system.
For the developers, containers just simplify application delivery. Rather than supporting multiple variants and operating systems, you basically enable a container that works everywhere. For infrastructural operations, containers ease up the process of running the applications.
You are not required to manage multiple, multiple versions of operating systems. The systems are only required to support the runtime of the container. You may commingle applications that need different operating systems on the same host.
Containers enable you to run different applications on the same host, even if they need conflicting library versions or require different operating systems. As a result, you may utilize your infrastructure more efficiently.
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6 reasons to choose our Dockers course
While there are many reasons why you should be considering our Dockers course program, here are 6 good reasons for the aspiring developers to consider the free Dockers course from Simplilearn:
● Hardware usage optimization
Like virtual machines, containerization has altered how we optimize our hardware utilization. With virtual machines, you will have to deal with many limits. Let us consider a scenario where you have to utilize one language to host two applications but are not on the same version. You can look for a solution or maybe a hack to do it in a single VM. However, you may finish developing a new VM to host the second application.
VMs may have some limits. However, by utilizing Docker, you may easily deploy many applications using different variants of the same language without developing a new VM.
● High availability and multi-tenancy
Suppose you utilize the right tools within the ecosystem. In that case, it is simpler to run many instances on the same application in the same server utilizing Docker rather than the ‘mainstream’ way. Utilizing a server discovery, proxy, and scheduling tool, you may begin a second server and load-balance your traffic between the cluster nodes where your containers are ‘living.’
● Collaboration and Distribution
If you wish to share containers and images, Docker grants you this social feature so that anyone or everyone may contribute to a public image. Communities and individuals may collaborate and share images. Users may also vote for the images. In the docker hub, you may find community and trusted images. Some images have a continuous security scan and build feature to keep them updated.
● CI/CD- built once, run everywhere
Docker is utilized in the production systems. However, running the same application on the developer’s server/ laptop is considered a tool. Docker may switch from development to QA to production without going through changes. If you wish to be as close as possible to the production, Docker is your best bet on this. If the R&D squad uses the same image that the QA experts will, a great part of your problems will disappear for sure.
There is an abundance of DevOps topologies in the software industries. And one of the biggest ones is the ‘container-centric’ topology. This topology makes both the Dev and Ops teams share more responsibilities in common. DevOps’s approach is to blur the boundaries between the teams and encourage co-creation.
● Isolation and Dependency Hell
When we are dockerizing an application, we are also isolating it into a separate environment. For instance, consider that there are two APIs that you would need to run with two languages that are different from each other or run them with the same language but different versions.
You must have two versions incompatible with the same language; each API is running one of them. If the two applications are dockerized, you are not required to set up anything on your host machine; only Docker and each variant will run in an isolated environment. Dockers simplifies package management, and its isolation feature eliminates the ‘dependency hell’.
● Utilizing the ecosystem
You may use Docker with multiple external tools like orchestration, configuration management, file system types, monitoring tools, and many others.
Prerequisite to get the most out of Docker
The training courses of DevOps are sophistically designed for experts who are working in the operation, development, and infrastructure domains. However, people who are planning to jump-start their career in DevOps most certainly need to take the Docker certification course. While there is no requirement for a prerequisite, it is always beneficial if an individual has prior knowledge of coding and the Docker platform.
Wrapping up
So there you have it! This blog covered what Dockers is and how it can help elevate your skills. From the introduction of dockers to its advanced concepts, kickstart your journey with Simplilearn’s free docker course for a rewarding career ahead.
