OpenCost: Kubernetes Cost Monitoring and FinOps
Shriira Press
Know what your Kubernetes workloads cost. Measure and allocate cloud costs in real time by namespace, team, and label — then optimize with OpenCost.
Welcome to OpenCost: Kubernetes Cost Monitoring and FinOps.
OpenCost is the CNCF open-source tool for measuring and allocating Kubernetes and cloud costs — it monitors resource usage (CPU, memory, storage, network, GPU) and prices it with real cloud billing rates to compute accurate, real-time cost, allocated to namespaces, workloads, pods, and labels. This free book teaches it from the ground up: the Kubernetes cost visibility problem and what OpenCost is, Kubernetes cost and FinOps concepts, OpenCost's architecture (the cost engine combining inventory, usage metrics, and pricing), the cost model (usage vs requests, accounting for all resources, accuracy and the open spec), cloud pricing integration (real rates across clouds and on-prem, reconciliation), cost allocation (to any dimension, shared and idle costs), the API, metrics, and UI, chargeback, showback, and FinOps (turning visibility into accountability), cost optimization (finding waste, right-sizing, safe optimization), and using OpenCost in practice. Ten focused chapters with clear diagrams that turn the opaque cloud bill into clear, allocated, optimizable cost — so you can see what everything costs, hold teams accountable, and eliminate waste, all openly with a vendor-neutral spec.
This title is part of the ShriIra library and is free to read in full, right here — our small contribution to making world-class knowledge easy to reach.
A note on reading it: open the Contents menu at the top of the reader to jump between chapters, use the Aa menu to set a comfortable text size, theme (light, sepia, or night), and single- or two-page layout. Your place is saved automatically, so you can always pick up where you left off.
We hope it serves you well.
— Shriira Press