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What Exactly Is Serverless? How it is helping Kubernetes

Latest reply: Aug 9, 2022 17:29:26 428 17 10 0 0

Serverless features are becoming more common among public cloud providers, allowing you to deploy functions instead of instances or containers.

What is Serverless computing?

    It is a design and deployment paradigm for event-driven applications in which computer resources are given as scalable cloud services. Server computing resources are a set and recurrent expense in typical application deployments, regardless of how much computing work is really being performed by the server. Customers in a Serverless computing system do not have to worry about paying for downtime or idle time.


  • Azure Functions for Microsoft’s Azure

  • AWS Lambda from Amazon Web Services

  • Google Cloud Functions from GCP (Google Cloud Platform)

  • Cloud Functions from Huawei Cloud

  • IBM Cloud Functions From IBM

In order to use these solutions, you don't have to worry about the infrastructure. Because they aren't "always-on" like containers and instances, serverless functions, if they don't need to be performed frequently, can save a lot of money.

Benefits of Serverless

To get code up and running in a public cloud serverless model may minimize operating expenses, engineering time, and the complexity of managing Windows/Linux distributions and building containers.



  • You don’t need to manage a Windows/Linux distribution

  • You only pay for the time that your function is running, not for the entire period.

  • Developers don't have to worry about a lot of operational factors when they can "simply push" the code

    • Even though "cold-starts," the time it takes for a function to start after it hasn't been used for some time, might be an operational issue that has to be addressed.

Serverless in Kubernetes

Rather than using containers to start applications on Kubernetes, you can also use Functions

Currently, the most popular projects enabling functions are:

  • OpenFaas

  • Kubeless

  • Fission

  • OpenWhisk


Kubernetes cluster may be used as a platform for developers to create and deploy services.

A developer can rapidly and simply deploy functions on Kubernetes, but as an administrator, you'll still have to maintain the infrastructure.

All these projects are pretty new (as of September 2018), so their feature set will still drastically change

    If you’re looking in adopting a serverless technology for your Kubernetes cluster, it’s best to compare the features and the maturity of multiple software products, and make your own decision



Kubeless is a Kubernetes-native framework (source:

  • It leverages the Kubernetes resources to provide auto-scaling, API routing, monitoring, etc

  • It uses Custom Resource Definitions to be able to create functions

  • It’s open source and non-affiliated to any commercial organization

  • It has a UI available for developers to deploy functions

    With kubeless you deploy a function in your preferred language, Currently, the following runtimes are supported:


  • Python

  • NodeJS

  • Ruby

  • PHP

  • .NET

  • Golang



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The post is synchronized to: Community Blog

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Admin Created 5 days ago

Hi, @BAZ
Because your article was very valuable and qualitative, we've decided to feature it on our Blog collection:

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BAZ Created 5 days ago (0) (0)
Yay. Thanks for it.  
Moderator Author Created Jul 5, 2022 18:20:53

Great sharing.. good to know it
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Moderator Created Jul 6, 2022 07:21:40

Thanks for sharing!
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Moderator Author Created Jul 6, 2022 08:00:02

For some developers, serverless computing's event-driven nature and lack of persistent states are drawbacks. Developers that require persistent data may run into issues because local variables' values may not survive instantiations.
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BAZ Created Jul 7, 2022 16:25:44 (0) (0)
Thanks for sharing valuable information  
Created Jul 6, 2022 08:02:26

Thanks for sharing.
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Moderator Author Created Jul 6, 2022 20:24:19

well done, explained nicely
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BAZ Created Jul 11, 2022 19:08:33 (0) (0)
Glad you liked it  
Moderator Author Created Jul 6, 2022 20:24:39

Serverless on Kubernetes reduces repetitive configuration in a cloud provider independent way
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BAZ Created Jul 6, 2022 22:05:54 (0) (0)
Yes that's correct. Thanks for adding up  
Moderator Created Jul 6, 2022 21:04:23

Good to know information about Serverless computing. It wpuld be more useful if you add what are disadvantages of Serverless Computing.
Thank you already
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BAZ Created Jul 6, 2022 22:06:58 (0) (0)
Thats for some other time and article.
Thanks for your great feedback  
Created Jul 10, 2022 05:07:27

A good option to consider in such a situation.
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Created Jul 17, 2022 05:13:26

Thanks for sharing
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