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The latest News and Information on DevOps, CI/CD, Automation and related technologies.

Certificate lineage: the concept your tools already use but nobody named

The word “certificate” means too many different things. When someone says “the certificate for example.com,” they might mean the public key the CA signed. They might mean the key-pair sitting on the filesystem. They might mean the signature that expires in 47 days. Or they might mean all the things together, that you’ve been renewing for the last 10 years. That last one doesn’t have a name in any PKI standard. And it should.

Why More SysAdmins Are Moving to aaPanel in 2026

Server management doesn't look like it did five years ago everything's moving fast, and sysadmins are under more pressure than ever to keep things smooth without blowing budgets or eating up resources. Lately, one name keeps popping up across every forum and tech chat: aaPanel. People who spent years with the same old paid panels are jumping ship. I'll break down exactly why that's happening-and why you might want to join them.

Validate Spring Boot Upgrades with Traffic Replay

Spring Boot version upgrades—whether moving from 2.x to 3.x, 3.x to 4.x, or even minor bumps like 3.2.5 to 3.3.1—regularly introduce subtle, breaking changes that unit and integration tests miss. JSON serialization shifts, autoconfiguration reordering, and transitive dependency conflicts can silently alter your API contract.

Sovereign GPU cloud: Data residency across training, inference, and model weights

Sovereign cloud conversations usually center on where customer data sits at rest. The provider points at a UK data center, the contract gets signed, and procurement marks the box. For most workloads, that's a defensible position. For GPU workloads, it isn't.

GPU cloud for AI inference in production: How infrastructure requirements change after training

Training a model is a project with an end date. Inference is what happens for the rest of the model's working life. The two workloads share GPUs, frameworks, and a lot of vocabulary, but the infrastructure decisions that make sense during training are usually the wrong ones in production. Teams that treat inference as "training, but smaller" tend to discover the gap somewhere around their first traffic spike.

Network Device Monitoring: Topology Maps and NetFlow

Most teams run one tool for SNMP polling, another for topology, and a third for flow analysis, then spend their time stitching the views together. This webinar shows how Netdata brings all three into a single dashboard, with 100+ vendor profiles out of the box, automatic Layer 2 topology mapping, and a flow collector that auto-detects NetFlow, IPFIX, and sFlow on a single port.