BLOG

Insights empowering your cloud and network

Top picks

Thumbnail of an article about Testing network configurations with free traffic generators

Thumbnail of an article about Testing network configurations with free traffic generators

Testing network configurations with free traffic generators

Multiple authors

Multiple authors

on Apr 30, 2024

1
2
3
4
5

All articles

CLOUD DATA NETWORKS OBSERVABILITY OPERATIONS QUALITY ASSURANCE SOFTWARE DEVELOPMENT UX

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 Sharing configuration between your CI, build and development environments

Thumbnail of an article about Sharing configuration between your CI, build and development environments

Sharing configuration between your CI, build and development environments

This post is a follow-up to our presentation at the OpenStack Summit in Berlin, where we discussed maintaining a unified CI and building pipelines using the open source CI system, Zuul. You’ll find a recording of the talk here and a related OpenStack Superuser writeup here. I thought it would be useful for some of you to expand the concept of unifying environments and to include also the development one. I will also explain why this may help you ensure your project is progressing smoothly. DevOps practitioners are always on the lookout for ways to optimize and bulletproof their development workflows.

Jarosław Łukow

Jarosław Łukow

Jarosław Łukow

on Jan 31, 2019

Thumbnail of an article about What is ZFS and how can I use it?

Thumbnail of an article about What is ZFS and how can I use it?

What is ZFS and how can I use it?

You have probably heard about ZFS. But perhaps you are still wondering what all the fuss is about, what it is exactly and how to use it. I’ve been using it for the past 3 years, so I hope I can help you understand how you can benefit from it. In a nutshell, ZFS is a combined filesystem and logical volume manager. It is intended, first and foremost, to maintain data integrity, but also to protect data from the hardware and from the user and simplify storage administration. ZFS was created at Sun Microsystems and open-sourced as part of OpenSolaris.

Witaut Bajaryn

Witaut Bajaryn

on Jan 21, 2019

Thumbnail of an article about SDN Security: Five reasons SDN is more secure than legacy networks

Thumbnail of an article about SDN Security: Five reasons SDN is more secure than legacy networks

SDN Security: Five reasons SDN is more secure than legacy networks

Great malware infections hit hard in 2017, leading to new cybersecurity concerns. As malware evolves, so too do networks and SDN and NFV solutions, which may be a good response to increasing threats. Let's talk about SDN security. According to the Cisco Annual Cybersecurity Report 2018, WannaCry and NotPetya were the most devastating ransomware attacks launched in 2017. WannaCry spread throughout institutions, including the Spanish telecom Telefonica, FedEx and Deutche Bahn while NotPetya hit Ukrainian banks, companies and the international logistics giant Maersk.

Michał Pik

on Nov 13, 2018

1 2...30 31 32 33 34

Explore tech-packed content

Thumbnail of an article about Testing network configurations with free traffic generators

Thumbnail of an article about Testing network configurations with free traffic generators

QUALITY ASSURANCE

Testing network configurations with free traffic generators

There are many ways to generate data streams, this article presents some commonly used methods during test automation. The commercial solutions are more expensive. However, there are a lot of cases where we can use non-commercial, free-of-charge solutions and tools to check things like predefined requirements, configurations, etc.

Multiple authors

Multiple authors

on Apr 30, 2024

Thumbnail of an article about Traffic Generators in Network Device Testing

Thumbnail of an article about Traffic Generators in Network Device Testing

Traffic Generators in Network Device Testing

on Apr 26, 2024

Thumbnail of an article about Introducing SONiC-DASH for enhanced network programmability

Thumbnail of an article about Introducing SONiC-DASH for enhanced network programmability

Introducing SONiC-DASH for enhanced network programmability

on Apr 15, 2024

Thumbnail of an article about The crucial role of machine learning metadata and its influence on content embeddings

Thumbnail of an article about The crucial role of machine learning metadata and its influence on content embeddings

The crucial role of machine learning metadata and its influence on content embeddings

Thumbnail of an article about Frontend security: API’s key risks and how to mitigate them

Thumbnail of an article about Frontend security: API’s key risks and how to mitigate them

Frontend security: API’s key risks and how to mitigate them

Thumbnail of an article about Testing network configurations with free traffic generators

Thumbnail of an article about Testing network configurations with free traffic generators

QUALITY ASSURANCE

Testing network configurations with free traffic generators

There are many ways to generate data streams, this article presents some commonly used methods during test automation. The commercial solutions are more expensive. However, there are a lot of cases where we can use non-commercial, free-of-charge solutions and tools to check things like predefined requirements, configurations, etc.

Multiple authors

Multiple authors

on Apr 30, 2024

Thumbnail of an article about Traffic Generators in Network Device Testing

Thumbnail of an article about Traffic Generators in Network Device Testing

Traffic Generators in Network Device Testing

on Apr 26, 2024

Thumbnail of an article about Introducing SONiC-DASH for enhanced network programmability

Thumbnail of an article about Introducing SONiC-DASH for enhanced network programmability

Introducing SONiC-DASH for enhanced network programmability

on Apr 15, 2024

Thumbnail of an article about The crucial role of machine learning metadata and its influence on content embeddings

Thumbnail of an article about The crucial role of machine learning metadata and its influence on content embeddings

The crucial role of machine learning metadata and its influence on content embeddings

Thumbnail of an article about Frontend security: API’s key risks and how to mitigate them

Thumbnail of an article about Frontend security: API’s key risks and how to mitigate them

Frontend security: API’s key risks and how to mitigate them

Thumbnail of an article about Testing network configurations with free traffic generators

Thumbnail of an article about Testing network configurations with free traffic generators

QUALITY ASSURANCE

Testing network configurations with free traffic generators

There are many ways to generate data streams, this article presents some commonly used methods during test automation. The commercial solutions are more expensive. However, there are a lot of cases where we can use non-commercial, free-of-charge solutions and tools to check things like predefined requirements, configurations, etc.

Multiple authors

Multiple authors

on Apr 30, 2024

Thumbnail of an article about Traffic Generators in Network Device Testing

Thumbnail of an article about Traffic Generators in Network Device Testing

Traffic Generators in Network Device Testing

on Apr 26, 2024

Thumbnail of an article about Introducing SONiC-DASH for enhanced network programmability

Thumbnail of an article about Introducing SONiC-DASH for enhanced network programmability

Introducing SONiC-DASH for enhanced network programmability

on Apr 15, 2024

Thumbnail of an article about The crucial role of machine learning metadata and its influence on content embeddings

Thumbnail of an article about The crucial role of machine learning metadata and its influence on content embeddings

The crucial role of machine learning metadata and its influence on content embeddings

Thumbnail of an article about Frontend security: API’s key risks and how to mitigate them

Thumbnail of an article about Frontend security: API’s key risks and how to mitigate them

Frontend security: API’s key risks and how to mitigate them

From raw data to insights: Effective data processing techniques

DATADATA ENGINEERINGMONITORING

The UX design of your networking application

Clickable prototype of network application

NETWORK APPUXPRODUCT DESIGN

AI for Networks: Shortening Fiber Cut Recovery Time

ARTIFICIAL INTELLIGENCEAINETWORKS

Hardware offloading in Software-Defined Networks

SDNNETWORKSOFFLOADING

AI and Machine Learning for Networks

AIMACHINE LEARNINGNETWORKS

Application networking in Kubernetes

NETWORK APPKUBERNETESK8S

AI for Networks – Improved Alarms

ARTIFICIAL INTELLIGENCEAINETWORKS

Generating packets with SmartNICs and P4

P4SMARTNICLOW-LEVEL PROGRAMMING

Is Golang the right choice for your project?

GOLANGGO LANGUAGE

AI for Networks: Capacity Planning

ARTIFICIAL INTELLIGENCEAINETWORKS

UX in network applications: How not to fail

Get your project estimate

For businesses that need support in their software or network engineering projects, please fill in the form and we’ll get back to you within one business day.

For businesses that need support in their software or network engineering projects, please fill in the form and we’ll get back to you within one business day.

We guarantee 100% privacy.

Trusted by leaders: