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7/7/2026
Deploying ClickHouse on Kubernetes

Deploying ClickHouse on Kubernetes

Short summary

A step-by-step guide to deploying a production-grade ClickHouse OLAP database cluster on Kubernetes using the official ClickHouse Operator. It covers installing cert-manager and the operator, provisioning a 3-node Keeper coordination group and a 2-replica ClickHouse cluster with TLS encryption, and verifying replication and connectivity. The tutorial includes full YAML manifests and kubectl commands for each stage of the deployment.

  • •Install cert-manager and the ClickHouse Kubernetes Operator via Helm
  • •Deploy a 3-node Keeper cluster and a 2-replica ClickHouse cluster with TLS and pod anti-affinity
  • •Verify pod readiness, replication, and internal/external connectivity using kubectl and the built-in ClickHouse client

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