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What Happens When MongoDB Runs Out of Disk on Kubernetes?

Event: Build DevCon: Document Databases

Dates: 28 August 2026 – 28 August 2026

Presentation: 28 August 2026 , 01:00

Link: On event website

Speaker: Eleonora Zinchenko

In this talk, we’ll explore how MongoDB behaves as disk usage approaches its limits and how Kubernetes storage expansion can help. Using Percona Operator for MongoDB, we’ll look at automatic PVC resizing based on disk utilization, how it interacts with Kubernetes and the underlying storage provider, and what happens when expansion isn’t possible.

Through practical examples, we’ll cover the configuration, limitations, and failure scenarios.

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What Happens When MongoDB Runs Out of Disk on Kubernetes?

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