There was a time when running multiple applications on one physical server used to be very problematic.
It was nearly impossible to specify how much of a CPU resource should the applications consume. This caused various sorts of problems like the underperformance of the applications.
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Why Need Kubernetes Certifications?
One way to combat this constraint was by using virtualized deployment. This technique enabled running multiple virtual machines on a single physical server. Now various applications could run on different virtual devices on the same physical server.
Virtualized deployment has its benefits, as it enables better consumption of server resources and allows better scalability. It also reduced hardware costs.
After the virtual machine deployment era, came the container deployment technique. It is not much different from virtual machines. The difference being, container deployment has alleviated isolation properties that allow sharing of an operating system between the applications running on the server.
In virtual machines, each VM had its operating system and other resources. In container deployment, applications can share the OS making the containers lightweight.
Containers are very similar to VM’s as they too have their own processing space, memory, filesystem, CPU, etc. Boxes are getting more and more popular due to the abundance of advantages they provide.
Kubernetes is a framework to deal with containers and run distributed systems. Kubernetes could help you with deployment patterns, can govern canary deployment, regulate scaling and failover.
Kubernetes can balance the traffic load and make the deployment stable. Kubernetes can provide service discovery. Kubernetes gives you with Storage orchestration, automated rollbacks, and rollouts, self-healing, bin packing, configuration, and secret management, etc.
This us how useful Kubernetes is. So no doubt, if you can do all these on Kubernetes, companies will not flinch even a little to hire you.
The only problem is- how do they know that you know Kubernetes for real? To make them realize you know Kubernetes for real, you would need to show them some certifications.
You need to get certified in Kubernetes. Once you have got the certification, you will have plenty of advantages like-
- You can serve as an asset for the Companies that rely on k8s.
- You would get an additional certification to boast in your resume, making you more experienced.
- Once you are a certified Kubernetes expert, you will have many job opportunities ahead of you with a handsome salary.
A Kubernetes expert could easily comprehend SaaS, and thus it would aid you in boosting your skillset.
These were just some of the benefits of getting Kubernetes certification.
It takes some hard work to pass these Kubernetes certifications, but once you do that, you could fetch a better salary than you would without this certifications. Some of this certification are also meant for organizations and enterprises.
If you are enthusiastic about Kubernetes, you must be wondering what Kubernetes certification do you need to pass. In this article, I am going to tell you the same thing.
Kubernetes Certification Options
While you could find a variety of platforms offering different courses to learn Kubernetes, the standard certifications are only 4 in number.
CNCF is offering these Kubernetes certifications. CNCF stands for the cloud-native computing foundation.
This body takes care of the development and management of the Kubernetes platform.
An aggregate of two certifications is available for people aspiring to learn Kubernetes or become a Kubernetes expert.
The same organization CNCF offers two more certifications for vendors or organizations. We will look at all four of this Kubernetes certification in detail in this article.
CKA – Certified Kubernetes Administrator
This certification program is meant for those professionals aspiring to get a job based on their Kubernetes skills. Once you pass this certification program, recruiters will not think twice to realize that you are a Kubernetes specialist.
This certification is valid for 3 years. Once you complete CKA certification, you will be transformed into a Kubernetes administrator. You will have all the capabilities and knowledge to regulate the Kubernetes platform and carry out the various task on it.
To get the certified Kubernetes administrator certificate, you would need to pass an exam. This examination would be conducted online to test your Kubernetes knowledge and skills. You would need to perform various operations using the command line. This exam will test your knowledge on these subjects:
- Core Concepts
- Application Lifecycle Management
- Installation, Configuration & Management
- Networking, Scheduling & Security
- Logging & Monitoring
- Cluster Maintenance
- Storage and Troubleshooting
This certification program is designed by the Linux foundation and CNCF jointly. Moreover, the Linux Foundation offers a free course to prepare for the certification examination.
The name of the course is Introduction to Kubernetes course (LFS158). This course is meant for absolute beginners in Kubernetes. Once you finish this course, you can move on to the next level course called- The Kubernetes Fundamentals (LFS258) course.
All these two courses are designed with the CKA examination in focus. So if you complete these two courses, you will be all set to at least appear for CKA examination.
You will get 3 hours to finish the certified Kubernetes administrator examination, and you can attempt the examination in multiple languages English, Japanese, German, Portuguese, Spanish and Simplified Chinese.
You would need to secure at least 74% in the examination to get passed.
As told earlier, in the online examination, you would need to perform several operations using the command line.
Last thing but not least, the price to enroll in the certification program is $300.
Checkout course @ CKA – Certified Kubernetes Administrator
CKAD- Certified Kubernetes Application Developer
The Certified Kubernetes application developer certification is for intermediate or expert Kubernetes application developers. Once you pass this certification program, you will be a certified Kubernetes application developer.
A certified Kubernetes application developer could easily design, build native cloud applications for Kubernetes, expose and configure them.
As this certification is not for absolute beginners, thus there are some unofficial conditions for this certification, these are listed below:
- The candidate aspiring to enroll in the certification must be able to Execute code in any of the programming languages like Java, Node.js, Go and Python.
- The candidate should have knowledge about and use of cloud-native applications and architectures.
- The candidate should be able to use an OCI-Compliant Container Runtime.
To get the CKAD certification, the candidate will need to appear for an examination that is called the Kubernetes Certified Application Developer exam.
The duration of this examination would be 2 hours, and you would need to get at least 66% to acquire the certification.
Multiple languages are allowed for the examination that are English, Japanese, German, Portuguese, Spanish and Simplified Chinese.
In the examination, the candidate will need to perform Performance-based tasks using the command line.
The price to enroll for the certification examination is $300, and it includes a free retake.
The following domains will be tested in the CKAD certification examination:
- Multi-Container Pods
- Core Concepts
- Pod Design
- State Persistence
- Services & Networking
For the preparation of certified Kubernetes application developer certification examination, The Kubernetes for Developers (LFD259) course by the Linux foundation is beneficial.
Checkout course @ CKAD – Certified Kubernetes Application Developer
Software Conformance (Certified Kubernetes)
This certification program is for organization or vendors that offer or are willing to provide Kubernetes-based software.
If any organization wish to get kubernetes certification, they would be required to submit conformance testing results. Once the organization does that, their results will be reviewed by CNCF, and then CNCF will decide to give the certification or not to the organization.
Once an organization or vendor gets the Software Conformance (Certified Kubernetes), certificate vendor’s version of Kubernetes has the support for the required APIs.
You would need to do the following things for getting the software conformance certification:
- Get your product ready for the certification.
- The next thing to do is run certification test using Sonobuoy.
- Formulate a PR, and you can deliver the results to the Conformance repo on GitHub.
- Now CNCF would review your application.
Checkout course @ Software Conformance (Certified Kubernetes)
Kubernetes Certified Service Provider
This certification is not for everyone; it is meant for enterprises. It is for enterprises that roll out kubernetes application regularly. This certification provides you with support for your kubernetes based activities and has many other advantages for kubernetes service offerers.
Once you acquire this certification, you can offer the following services:
- Professional services
Or in case, any organization offers these services, and the organization must attempt for Kubernetes Certified Service Provider.
The process for getting a Kubernetes Certified Service Provider is as follows:
- Fill out the KCSP form.
- You will need to submit Certified Kubernetes Administration certifications of at least 3 employees.
- Now your application will be reviewed, and you can wait for the results.
These were 4 standard certification program to get certified in Kubernetes. Once you do that, you will have ample pf Kubernetes opportunities waiting for you ahead.
Kubernetes is widely popular and backed up big companies like Google, so the technology is worth it to learn.
I hope this article helped you and thanks for reading.