You need not be too far into your Kubernetes journey to realize that networking in Kubernetes is, in a word, complicated. Not only is the Kubernetes networking architecture complex, but there is a range of configuration options to sort through for the key components that make up that architecture, such as your CNI implementation. To […]
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· October 14, 2020 · 6 min read
As applications are being broken down from monoliths into microservices, the number of services making up an application increases exponentially. And as anyone in IT knows, managing a very large number of entities is no trivial task. A K8s Service Mesh, such as Istio, solves challenges caused by container and service sprawl in a microservices architecture
· October 14, 2020 · 5 min read
Kubernetes and container-based environments make running microservice-based applications at scale feasible. The ability to add additional capacity, and replace problematic containers quickly, can improve overall system resilience. On the flip side, the benefits of containers also mean they can be challenging when it comes to setting up and managing a networking solution. This article will
· September 30, 2020 · 4 min read
Kubernetes contains an internal DNS module that automatically discovers and assigns DNS names to individual containers when instructed. In practice, this works very well and there is room for customization. However, when the time comes, we frequently need to expose some or all parts of the Kubernetes cluster to the public. For instance, if a
· September 16, 2020 · 4 min read
Kubernetes networking can be noisy, tedious, and complex. This article discusses some of the challenges involved with managing and troubleshooting Kubernetes networking for large-scale production deployments. In fact, in a recent survey, 42% of Kubernetes users list networking as their largest Kubernetes challenge. This number often goes up as deployment size increases. Additionally, according to
· April 6, 2020 · 7 min readCloud-native applications are often architected as a constellation of distributed microservices, which are running in Containers. Increasingly, these containerized applications are Kubernetes-based, as it has become the de-facto standard for container orchestration. One outcome that most companies using microservices architecture don’t fully understand the impact of until they are well down the path is microservices
· October 21, 2019 · 12 min readWhat is Calico? Project Calico is designed to simplify, scale, and secure cloud networks. The open source framework enables Kubernetes networking and network policy for clusters across the cloud. It was originally designed for today’s modern cloud-native world and runs on both public and private clouds. Within the Kubernetes ecosystem, Calico is starting to emerge
· April 17, 2018 · 3 min read
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· April 14, 2017 · 3 min read
Of late, there have been various Open source projects to manage networking for containers. Docker implemented “libnetwork“. I’ve written in the past about using Calico with Docker containers. Debugging and low level tweaks to performance isn’t easy without an in-depth understanding of how the network stack works for a container. This post tries to explain network
· January 10, 2017 · 5 min read