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Cloud computing enables businesses to store and manage data, host applications, and utilize computing power on-demand without physical infrastructure. This flexible and scalable approach to IT infrastructure offers cost-efficiency, easy accessibility and allows organizations to focus on core competencies rather than infrastructure management.

Thumbnail of an article about How to create a custom resource with Kubernetes Operator

Thumbnail of an article about How to create a custom resource with Kubernetes Operator

How to create a custom resource with Kubernetes Operator

While developing projects on the Kubernetes platform I came across an interesting problem. I had quite a few scripts that ran in containers and needed to be triggered only once on every node in my Kubernetes cluster. This could not be solved using default Kubernetes resources such as DaemonSet and Job. So I decided to write my own resource using Kubernetes Operator Framework. How I went about it is the subject of this blog post. When I confronted this problem, my first thought was to use a DaemonSet resource that utilizes initContainers and then starts a dummy busybox container running `tail -f /dev/null` or another command that does nothing.

Szymon Krasuski

Szymon Krasuski

Szymon Krasuski

on Nov 12, 2020

Thumbnail of an article about How to build a test automation framework in the cloud

Thumbnail of an article about How to build a test automation framework in the cloud

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How to build a test automation framework in the cloud

Have you ever wondered how to set up a test automation framework directly in the cloud? Well, in this blog post you will learn about everything you’ll need to successfully create such a framework. We’re going to look at the pros and cons of preconfigured testing environments and those that are created dynamically. We’ll then show you how to include software testing in a CI/CD pipeline and achieve high level automation. Finally, we’ll break down what a message broker is and how it can be used when creating a testing architecture.

Marek Bobcow

Marek Bobcow

Marek Bobcow

on Jan 9, 2020

Thumbnail of an article about Security in Kubernetes — overview of admission webhooks

Security in Kubernetes — overview of admission webhooks

This blog post is a continuation of two previous posts on security mechanisms in Kubernetes. If you have not yet read them, click here for part 1 and part 2 to see how you can provide an adequate level of security in Kubernetes deployments. Existing admission controllers are very useful, as they allow you to validate or modify requests to a Kubernetes API server. However, they have two limitations: They have to be compiled into an API server and can be configured only on the API server startup. The flexibility of admission webhooks helps solve these problems.Once enabled, their behavior depends on the special application running inside the Kubernetes cluster.

Marcin Szumilak

Marcin Szumilak

Marcin Szumilak

on Jun 23, 2019

Thumbnail of an article about How to make your Kubernetes cluster secure

How to make your Kubernetes cluster secure

In the last couple of years Kubernetes (K8s) has become one of the most popular tools for running containerized applications. Many cloud companies, major ones among them, have adopted it to orchestrate their container-based workloads. Given its popularity, the problem of K8s security is becoming even more pressing. Read our two-part blog post series on how to make a Kubernetes cluster secure. Part one provides a brief history of virtualization, presents admission controllers and how they work and shows how Pod Security Policies, a powerful admission controller, can help you manage user actions on Kubernetes cluster.

Marcin Szumilak

Marcin Szumilak

Marcin Szumilak

on Jun 11, 2019

Thumbnail of an article about The benefits of Pod Security Policy — a use case

The benefits of Pod Security Policy — a use case

In the previous post I looked at how security is handled in Kubernetes. Let’s now see how it works in practice. One of the most powerful controllers is the Pod Security Policy admission controller (PSP). PSP is a cluster-level security mechanism that enables control over sensitive aspects of pod specification. It allows you to define a set of conditions a pod must meet in order to be accepted into the system.The following use case illustrates how it works. Let’s assume that we have a shared file system

Marcin Szumilak

Marcin Szumilak

Marcin Szumilak

on Jun 11, 2019

Thumbnail of an article about Six reasons you may need a Managed Cloud Service Provider

Six reasons you may need a Managed Cloud Service Provider

According to Forrester data, 2019 will be the year when companies begin moving their core apps and operations into the cloud. As many companies have already seen, there are numerous benefits of cloud transformation and multiple vendors to choose from. According to RightScale, a full 91% of companies already use public cloud, 72% have used a private cloud and 58% of companies employ a multi-cloud strategy. With 91% of the organizations surveyed by CompTIA using some form of cloud computing, it is safe to say that companies are getting more and more cloud-reliant.

Konrad Budek

Konrad Budek

Konrad Budek

on May 28, 2019

Thumbnail of an article about Kubernetes: what is it and how you can use it (part 1/2)

Kubernetes: what is it and how you can use it (part 1/2)

Kubernetes is an open-source system for container orchestration enabling automated application deployment, scaling and management. Read this two-part blog post to understand the business perspective on Kubernetes. I will present a brief story of virtualization methods, the key concepts on which Kubernetes is built and how it can help your business when it comes to running containerized applications. The second part covers six main reasons to adopt Kubernetes. First, let’s take a look at the market data on the adoption of Kubernetes.

Maciej Manturewicz

Maciej Manturewicz

Maciej Manturewicz

on May 15, 2019

Thumbnail of an article about How to use NVIDIA GPUs with Kubernetes — CodiLime approach

How to use NVIDIA GPUs with Kubernetes — CodiLime approach

The combination of NVIDIA GPUs, to allow computing power to be harnessed, and Kubernetes, responsible for managing containerization, may seem like a perfect marriage of two complementary tools, and an obvious solution. Yet, at the technical level, this combination, like many marriages, turned out to be more tricky than might have been expected. Read this blogpost to find out how CodiLime managed to find a way to deal with this matter. Let’s introduce the main characters then: NVIDIA GPUs (Graphic Processing Units) are powerful tools used to accelerate computationally-intensive tasks.

Paweł Gołębiewski

Paweł Gołębiewski

Paweł Gołębiewski

on May 8, 2019

Thumbnail of an article about Debugging Nginx Ingress in Kubernetes — a study in (Codi)Lime

Debugging Nginx Ingress in Kubernetes — a study in (Codi)Lime

This story comes with everything one needs to tell the perfect noir detective story. There’s an investigation, a mysterious victim and a silent psycho mass-murderer. Only the setting is changed, with Kubernetes clusters instead of Victorian era London and the CodiLime team smoking Sherlock Holmes’ pipe. So pour yourself some whiskey, light up a cigar and enjoy your reading! Kubernetes is currently one of the most popular open-source systems for deploying and managing applications. Yet it wouldn’t be so useful without Ingress, a tool that enables the outer world to contact the components within Kubernetes by using HTTP or an HTTPS protocol.

Maciej Sawicki

Maciej Sawicki

Maciej Sawicki

on Mar 26, 2019

Thumbnail of an article about Five cloud challenges solved by Software Defined Networking (SDN)

Thumbnail of an article about Five cloud challenges solved by Software Defined Networking (SDN)

Five cloud challenges solved by Software Defined Networking (SDN)

As purchasing more and more gear becomes an outdated way to upscale, companies outsource computing power from a the cloud. However, organizations struggle to combine their physical servers and cloud resources into a single efficient, integrated network. This article runs through some of the main concerns about the cloud. It addresses how SDN technology solves them and how it can support a company in managing its cloud services and internal resources. Empowering old-style on-prem infrastructure with SDNs allows companies to tackle their most pressing challenges in building a hybrid cloud.

Konrad Budek

Konrad Budek

Konrad Budek

on Aug 23, 2018

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