A comprehensive guide to Kubernetes: 45 Labs and 50 Practice Questions
Kubernetes is a container orchestration technology - a way to create and deploy clusters of machines running containers, usually Docker containers.
Kubernetes is also one of the hottest topics in tech today, because it is perhaps the only straightforward way to architect a hybrid, multi-cloud compute solution.
Let's parse that:
Hybrid: This is a solution where an enterprise has a private cloud or on-premise data center, in addition to using one of the public cloud providers (such as AWS, GCP or Azure). Any firm migrating to the cloud is going to have to run a hybrid setup, at least during the migration
Multi-cloud: This refers to the use of more than 1 cloud provider. Why is this so important? Well, because most large firms are unwilling to be completely locked into one provider, particularly after events like Amazon's acquisition of Whole Foods (that gave pause to a whole lot of potential AWS customers, who decided that 'multi-cloud' makes sense for strategic reasons)
Only straightforward way: Most cloud providers offer a range of compute solutions, ranging from PaaS (Elastic Beanstalk, or Google App Engine) to IaaS (EC2, or Google Compute Engine VMs). The reality is that PaaS ties you down to 1 cloud provider, and IaaS is a lot of hassle, during migration and beyond.
Kubernetes is supported by each of the Big-3: GCP has a special relationship with Kubernetes (since K8S originated at Google) but now AWS and Azure support it as well. Kubernetes has won the battle of the container orchestration systems.
This is why containers running on Kubernetes constitute the hottest compute choice for a hybrid, multi-cloud world.
Here is now is what this course contains:
Docker, Kubernetes and the cloud platforms: understanding the inter-relationships
Pods and containers: Pods are the basic building block in K8S; each pod holds one or more containers that are tightly-coupled to each other
ReplicaSets: Higher-level abstractions that provide scaling and auto-healing (they encapsulate pods, and bring new pods back up if the old ones crash)
Deployments: Even higher-level abstractions that provide versioning, fast rollback, rolling updates and more
Services: Front-end abstractions (think of them as similar to load-balancers) that are loosely coupled with backend pods. Services provide a static, stable network frontend IP, as well as load-balancing
Other K8S objects: StatefulSets, Secrets, ConfigMaps, Jobs and CronJobs and more
CKA test tips: We don't reveal any information about the test that we should not, such as specific questions. But we do discuss the test format, what to expect, pitfalls to avoid, and strategies for success
Hope you enjoy the course!
Improve their odds of succeeding at the CNCF Certified Kubernetes Administrator test
Build and administer Kubernetes clusters - on-premise, as well as on all major cloud platforms (AWS, Azure, GCP)
Understand and employ advanced deployment solutions using Kubernetes
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Loonycorn is us, Janani Ravi and Vitthal Srinivasan. Between us, we have studied at Stanford, been admitted to IIM Ahmedabad and have spent years working in tech, in the Bay Area, New York, Singapore and Bangalore. Janani: 7 years at Google (New York, Singapore); Studied at Stanford; also worked at Flipkart and Microsoft Vitthal: Also Google (Singapore) and studied at...
Great theoretical knowledge demonstrated by the lecturer along with practical demonstrations. However the quiz at end of modules seem fairly easy to answer and the fact that CKA exam has troubleshooting tasks involved, it would be useful if this was incorporated into course.
Useless
good. Would be better if less repetition.
The cheat-sheet provided with the course does not match the content.
Also, quite a few items are repeated over and over again.
Finally, some labs use the wrong object name which causes confusion in the subsequent labs.
This course definitely needs a refresh. Also, later in the course there is only one lab for section 11. Lots of sections presume you already have configured your pods, etc... to a certain state without mentioning what to do.
The course is not updated and has pretty old content. Also the Labs are not much useful.
Te course was decent, but it hasn't been updated in a while.
The presentation goes too quickly over some things. For instance, I had to pause the presentation and look up Union-Capable FS. Wasn't a big deal but I'd never heard that term before.
Even though I know/understand Docker and K8 a little, I like the high-level explanations to refresh my memory. :-)
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Mark G.
Great content in general, however some of the content is out of date and should have been updated on a regular basis.