Continuing from my previous blog on the series, What you can’t do with Kubernetes network policies (unless you use Calico), this post will be focusing on use case number five — Default policies which are applied to all namespaces or pods.

Kubernetes is an excellent solution for building a flexible and scalable infrastructure to run dynamic workloads. However, as our cluster expands, we might face the inevitable situation of scaling and managing multiple clusters concurrently. This notion can introduce a lot of complexity for our day-to-day workload maintenance and adds difficulty to keep all our policies and services up to date in all environments.

Welcome to the Calico monthly roundup: September edition! From open source news to live events, we have exciting updates to share—let’s get into it!

Welcome to the Calico monthly roundup: August edition! From open source news to live events, we have exciting updates to share—let’s get into it!

We are excited to announce the publication of our 2023 State of Calico Open Source, Usage & Adoption report! The report compiles survey results from more than 1,200 Calico Open Source users from around the world, who are actively using Calico in their container and Kubernetes environments. It sheds light on how they are using Calico across various environments, while also highlighting different aspects of Calico’s adoption in terms of platforms, data planes, and policies.

Metrics are important for a microservices application running on Kubernetes because they provide visibility into the health and performance of the application. This visibility can be used to troubleshoot problems, optimize the application, and ensure that it is meeting its SLAs. Some of the challenges that metrics solve for microservices applications running on Kubernetes include: Calico is the most adopted technology for Kubernetes networking and security.

Welcome to the Calico monthly roundup: July edition! From open source news to live events, we have exciting updates to share—let’s get into it!

At Kubecon 2023 in Amsterdam, Azure made several exciting announcements and introduced a range of updates and new options to Azure-CNI (Azure Container Networking Interface). These changes will help Azure Kubernetes Services (AKS) users to solve some of the pain points that they used to face in previous iterations of Azure-CNI such as IP exhaustion and big cluster deployments with custom IP address management (IPAM).

In this blog post, we will explore the concept of Kubernetes topology aware routing and how it can enhance network performance for workloads running in Amazon. We will delve into topology aware routing and discuss its benefits in terms of reducing latency and optimizing network traffic flow. In addition, we’ll show you how to minimize the performance impact of overlay networking, using encapsulation only when necessary for communication across availability zones.

In Linux, network-based applications rely on the kernel’s networking stack to establish communication with other systems. While this process is generally efficient and has been optimized over the years, in some cases it can create unnecessary overhead that can impact the overall performance of the system for network-intensive workloads such as web servers and databases.