OpenCost allocates Kubernetes costs to namespaces and

Short summary

OpenCost is a CNCF Incubating open-source engine that allocates Kubernetes costs down to namespaces, workloads, and labels using a max(request, usage) model plus idle-cost sharing, enabling honest showback without a commercial platform. The standard deployment path is a Helm install pointed at an existing Prometheus instance, after which the Allocation API provides ready-to-query cost breakdowns by namespace or label with idle-cost distribution built in. The article covers installation, API queries for seven-day namespace and label-based aggregations, shared-cost distribution strategies, and Prometheus metrics for dashboarding baseline cluster spend.

• •OpenCost allocates Kubernetes costs to namespaces/workloads using max(request, usage) plus idle-cost sharing for honest showback
• •Standard install is Helm against existing Prometheus; Allocation API gives instant cost breakdowns by namespace or label
• •Shared costs can be distributed uniformly, proportionally, or by custom metric; Promless mode is emerging but not yet the default

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