News Category: DevOps

Kubernetes: The “Distributed” Linux of the Cloud

Kubernetes is the first CNCF project to graduate — this means it is “mature and resilient enough to manage containers at scale across any industry in companies of all sizes.” We talked with Chris Aniszczyk, COO of CNCF about Kubernetes’ popularity, what’s next for this technology and what other...
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7 Questions to Ask About Your DevSecOps Program

If you’ve implemented, or are implementing, a DevSecOps program, we’ve come up with several questions to consider below. By posing these questions, we hope to help spur new ideas and help identify areas for improvement.  Is My Application (or Microservice) Leaking Data? While microservices have...
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How to Use Ansible to Set Up System Monitoring with Prometheus

In summer 2017, I wrote two how-to articles about using Ansible. After the first article, I planned to show examples of the copy, systemd, service, apt, yum, virt, and usermodules. But I decided to tighten the scope of the second part to focus on using the yum and user modules. I explained how to...
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How to Apply Systems Thinking in DevOps

Systems thinking is a holistic approach to problem-solving. It's the opposite of analytical thinking, which separates a problem from the "bigger picture" to better understand it. Instead, systems thinking studies all the elements of a problem, along with the interactions between these elements...
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Container Isolation Gone Wrong

One of the main advantages of embracing containers is "lightweight virtualization." Since each container is just a thin layer around the containerized processes, the user gains enormous efficiencies, for example by increasing the container density per host, or by spinning containers up and down at...
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A Guide To Securing Docker and Kubernetes Containers With a Firewall

Before deploying any container-based applications, it’s crucial to first protect its security by ensuring a Docker, Kubernetes, or other container firewall is in place. There are two ways to implement your container firewall: manually or through the use of a commercial solution. However, manual...
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Infrastructure 2.0: Whatever We’re Calling it Now, It’s Here

The cloud has taught us about the economies of scale, and now containers are threatening to redefine it once again. It’s the collection of devices known as the network — or the data path — that support the scale of applications and services. In that data path lies a number of network and...
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Automated Provisioning in Kubernetes

When deploying applications in a Kubernetes cluster, certain types of services are commonly required. Many applications require a database, a storage service, a message broker, identity management, and so on. You have enough work on your hands containerizing your own application. Wouldn’t it be...
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Tutorial: Tracing Python Flask requests with OpenTracing

A transaction trace is a GPS system for web performance: it paints a rich picture of the flow of a web request through your code. So, why doesn't everybody trace? I believe there are two reasons: Complex instrumentation: Adding in-app tracing instrumentation is more involved than calling logger....
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Building Open Source Security into DevOps

DevOps is a philosophy of IT operations that binds the development of services and their delivery to the core principles of W. Edwards Deming’s points on Quality Management. When applied to software development and IT organizations, Deming’s principles seek to improve the overall quality of...
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