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Thumbnail of an article about Understanding DNSSEC Key Types, Rollover, and Chain of Trust

Understanding DNSSEC Key Types, Rollover, and Chain of Trust

Mariusz Hryszko

Mariusz Hryszko

Thumbnail of an article about Beyond buzzwords: How AI is actually making testing smarter

Beyond buzzwords: How AI is actually making testing smarter

Stanisław Madaliński-Piętka

Stanisław Madaliński-Piętka

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CloudDataNetworksObservabilityOperationsQuality assuranceSoftware developmentUX
Thumbnail of an article about Infographic: BUM traffic in the L2 and L3 domains
NETWORKS

Infographic: BUM traffic in the L2 and L3 domains

Broadcast, unknown-unicast and multicast traffic (BUM) in the L2 and L3 domains
Monika Antoniak

Monika Antoniak

Thumbnail of an article about Infographic: ISO/OSI and TCP/IP models
NETWORKS

Infographic: ISO/OSI and TCP/IP models

ISO/OSI and TCP/IP models - what are the equivalences between the layers?
Monika Antoniak

Monika Antoniak

Thumbnail of an article about Infographic: IPv4 vs IPv6 — comparison
NETWORKS

Infographic: IPv4 vs IPv6 — comparison

Monika Antoniak

Monika Antoniak

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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Explore tech-packed content

Thumbnail of an article about Understanding DNSSEC Key Types, Rollover, and Chain of Trust
NETWORKS

Understanding DNSSEC Key Types, Rollover, and Chain of Trust

DNSSEC key rollover strategies have been developed to ensure that the trust between all parts of the DNSSEC environment is maintained at any one time. This article briefly describes the most common key rollover techniques.
Mariusz Hryszko

Mariusz Hryszko

Ensuring Consistency in Distributed Systems: Atomic Operations in Microservices

on Jul 25, 2025

Beyond buzzwords: How AI is actually making testing smarter

on Jul 9, 2025

Introduction to GenAI-based multi-agent network orchestration (part 2)

on Jun 20, 2025

An introduction to GenAI in multi-agent network orchestration (part 1)

on Apr 22, 2025
See all >>
Thumbnail of an article about Understanding DNSSEC Key Types, Rollover, and Chain of Trust
NETWORKS

Understanding DNSSEC Key Types, Rollover, and Chain of Trust

DNSSEC key rollover strategies have been developed to ensure that the trust between all parts of the DNSSEC environment is maintained at any one time. This article briefly describes the most common key rollover techniques.
Mariusz Hryszko

Mariusz Hryszko

Ensuring Consistency in Distributed Systems: Atomic Operations in Microservices

on Jul 25, 2025

Beyond buzzwords: How AI is actually making testing smarter

on Jul 9, 2025

Introduction to GenAI-based multi-agent network orchestration (part 2)

on Jun 20, 2025

An introduction to GenAI in multi-agent network orchestration (part 1)

on Apr 22, 2025
See all >>
Thumbnail of an article about Understanding DNSSEC Key Types, Rollover, and Chain of Trust
NETWORKS

Understanding DNSSEC Key Types, Rollover, and Chain of Trust

DNSSEC key rollover strategies have been developed to ensure that the trust between all parts of the DNSSEC environment is maintained at any one time. This article briefly describes the most common key rollover techniques.
Mariusz Hryszko

Mariusz Hryszko

Ensuring Consistency in Distributed Systems: Atomic Operations in Microservices

on Jul 25, 2025

Beyond buzzwords: How AI is actually making testing smarter

on Jul 9, 2025

Introduction to GenAI-based multi-agent network orchestration (part 2)

on Jun 20, 2025

An introduction to GenAI in multi-agent network orchestration (part 1)

on Apr 22, 2025
See all >>

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