Operations | Monitoring | ITSM | DevOps | Cloud

We’re excited to announce the release of Calico v3.31, which brings a wave of new features and improvements. For a quick look, here are the key updates and improvements in this release.

When deploying a Kubernetes cluster, a critical architectural decision is how pods on different nodes communicate. The choice of networking mode directly impacts performance, scalability, and operational overhead. Selecting the wrong mode for your environment can lead to persistent performance issues, troubleshooting complexity, and scalability bottlenecks. The core problem is that pod IPs are virtual.

The National Research Platform (NRP) operates a globally distributed, high-performance computing and networking environment, with an average of 15,000 pods across 450 nodes supporting more than 3,000 scientific project namespaces. With its head node in San Diego, NRP connects research institutions and data centers worldwide via links ranging from 10 to 400 Gbps, serving more than 5,000 users in 70+ locations.

If you’re running Calico using manifests, you may have found that enabling the observability features introduced in version 3.30, including Whisker and Goldmane, requires a more hands-on approach. Earlier documentation focused on the Tigera operator, which automates key tasks such as certificate management and secure service configuration. In a manifest-based setup, these responsibilities shift to the user.

Running Kubernetes inside Kubernetes isn’t just a fun experiment anymore – it’s becoming a key pattern for delivering multi-environment platforms at scale. With KubeVirt, a virtualization add-on for Kubernetes that uses QEMU (an open-source machine emulator and virtualizer), you can run full-featured Kubernetes clusters as virtual machines (VMs) inside a parent Kubernetes cluster.

Getting the most out of Whisker requires understanding its inner workings and this guide is designed to help you master this exciting tool with support from the Calico community. We’ve compiled the most frequently asked questions from our community Slack, support conversations, and CalicoCon sessions. This Q&A covers everything from initial installation tips and version requirements to advanced topics like filtering flow logs and integrating with Goldmane, the powerful API that underpins Whisker.

Are you tired of digging through cryptic logs to understand your Kubernetes network? In today’s fast-paced cloud environments, clear, real-time visibility isn’t a luxury, it’s a necessity. Traditional logging and metrics often fall short, leaving you without the context needed to troubleshoot effectively. That’s precisely what Calico Whisker’s recent launch (with Calico v3.30) aims to solve. This tool provides clarity where logs alone fall short.

As Kubernetes adoption scales across enterprise architectures, platform architects face mounting pressure to implement consistent security guardrails across distributed, multi-cluster environments while maintaining operational velocity. Modern infrastructure demands a security architecture that can adapt without introducing complexity or performance penalties.

“We started in 2017 with Calico and never regretted it!” —Stefan Fudeus, Product Owner/Lead Architect, 1&1 Mail & Media.

Kubernetes networking is deceptively simple on the surface, until it breaks, silently leaks data, or opens the door to a full-cluster compromise. As modern workloads become more distributed and ephemeral, traditional logging and metrics just can’t keep up with the complexity of cloud-native traffic flows.