Kubernetes Operators: The Pattern
Building domain-specific controllers that encode operational knowledge into Kubernetes using the Operator pattern.
Kubernetes Operators: The Pattern
Building domain-specific controllers that encode operational knowledge into Kubernetes using the Operator pattern.
What you'll learn
- Operator = CRD + Controller (reconciliation loop)
- Manages Day 2 operations: scaling, upgrades, backups, failover
- OperatorHub.io: 300+ community operators for common databases
What is an Operator?
An Operator is a Kubernetes controller that manages a stateful application. It uses Custom Resource Definitions (CRDs) to define desired state and a reconciliation loop to drive actual state toward desired. The etcd operator, Prometheus operator, and database operators automate complex Day 2 operations.
Key takeaways
- Operator = CRD + Controller (reconciliation loop)
- Manages Day 2 operations: scaling, upgrades, backups, failover
- OperatorHub.io: 300+ community operators for common databases
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