CKA, the full name is Certificated Kubernetes Administrator, that is, the officially certified Kubernetes administrator. It is very useful for people who want to do Kubernetes operation and maintenance work. As the most popular open source orchestration engine, Kubernetes has been widely used around the world. Many well-known companies at home and abroad, such as Baidu, Alibaba, Tencent, IBM, and Huawei, are building enterprise cloud platforms based on Kubernetes to support their business. More and more companies are also building their business by Kubernetes. It is believed that in the future, Kubernetes will become a common infrastructure standard, and containerized operation and maintenance and DevOps construction will also become the top priority of operation and maintenance. Therefore, the CNCF Foundation launched the official Kubernetes Engineer Certification (CKA). The engineers through CKA stated that they have met the ability to manage Kubernetes, are competent for Kubernetes-related work, and are also a stepping stone on the road of Kubernetes work.
The benefit of CKA
･ Enhance professional competence. CKA is a key step in CNCF's efforts to develop Kubernetes administrator community, thus promoting companies and organizations to widely use Kubernetes for implementation practice.
･ Prove your ability. CKA certified managers can quickly build their reputation and value in the job market.
･ Application for KCSP certification: each company can apply for KCSP once 3 employees have passed the CKA (KCSP is initiated by CNCF and Linux foundation, aiming at certification of service providers with rich experience in enterprise application of Kubernetes).
･The company's bidding advantages. If the company's business is enterprise oriented projects, providing CKA qualification certificate when participating in the bidding can improve the success rate.
In order to meet the employment needs of more enterprises, getting CKA should be regarded as the most powerful ability certificate in addition to relevant work experience. For those who want to do Kubernetes development class work, although not directly related, it is also a good way to get started.
The first thing to note is that CKA registration only includes the cost of the examination, and the training is not included in it. You need to prepare for the exam by yourself. Although CNCF has corresponding CKA preparation training, it will be charged separately. CKA registration address is: https://www.cncf.io/certification/cka/
Suggestions for examination preparation
If the foundation about Kubernetes is relatively weak, you can consider signing up for an exam preparation tutorial for systematic study. If you already have a certain foundation, it is unnecessary. You can look through the examination syllabus of CKA to check the knowledge points. The knowledge points corresponding to the examination syllabus and valuable reference materials are collected together, which can save a lot of time. The last but most important thing is to practice a lot. Candidates must be familiar with the kubectl command. Because the exam time is limited, we must understand how to create resources such as deploy and service with the command line. Otherwise, it will be too late to write yaml line by line.
As for the lessons for the exam, what needed to be emphasized is that although Linux Fundamental is an officially recommended supporting tutorial, the content of this tutorial is not specifically prepared for exam preparation. If you buy it just for exam preparation, you will most likely be disappointed. The content of this tutorial is just like the name of the basic Kubernetes tutorial. It covers a wide range of content. A large part of the knowledge cannot be examined in a short time exam, and a considerable part of the exam details are not in the tutorial. As an introduction to Kubernetes, this course is quite good, but it is not suitable for exam preparation, and it is not very valuable to Kubernetes engineers with practical experience.
Tips for the examination
･The examination is allowed to enter the examination interface 15 minutes in advance, and before the examination starts, routine inspection is required, which will consume a certain amount of time. Moreover, the accounting time for entering the examination is mainly to check whether the environment meets the requirements of the examination. Therefore, it is suggested to make good use of the 15 minutes before the examination, and do not be late. If you are late for more than 15 minutes, you will lose the examination qualification. In addition, the operating environment of the examination is in the browser window, so many operations are not the same as usual, especially copy and paste, which takes time to adapt.
･It is also important to note that during the examination, it is impossible to check which questions have been completed. If you skip some questions, it is very necessary to record them in Notepad (Notepad function provided in the examination environment, and other programs in the computer are not allowed to be used in the examination) to avoid missing answers.