MongoDB Community Kubernetes Operator

The MongoDB Kubernetes Operator is an open-source controller that automates deploying and managing MongoDB clusters on Kubernetes, enabling developers and operators to run production-grade MongoDB in cloud-native environments. By defining custom resource definitions (CRDs) for MongoDB resources, the operator lets you declare cluster topology, configuration, and scaling policies as Kubernetes manifests that can be applied with standard tools like kubectl and Helm. The operator handles provisioning, failover, backups, upgrades, and monitoring hooks, dramatically reducing manual operational burden while improving reliability and consistency. It supports replica sets and sharded clusters, giving operators the flexibility to choose architectures that match their availability and performance needs. With integration into Kubernetes RBAC, secrets management, and storage classes, the operator ensures MongoDB clusters respect platform-level policies for security and data persistence.