Can you name some popular Kubernetes operators and briefly explain their purpose?

Some popular Kubernetes operators and their purposes:

• Prometheus Operator — automates deployment and management of Prometheus for cluster monitoring.
• Cert-Manager — manages TLS certificates, automatically renews and issues them.
• Istio Operator — simplifies installation and configuration of the Istio service mesh.
• MongoDB Operator — automates deployment and management of MongoDB clusters.
• ElasticSearch Operator — helps manage ElasticSearch clusters, including scaling and updates.

Operators extend Kubernetes, allowing management of complex applications and services as native cluster resources.