Network ports
note
Ports described as default mean that the port number is configured in /etc/clickhouse-server/config.xml. To customize your settings, add a file to /etc/clickhouse-server/config.d/. See the configuration file documentation.
| Port | Description |
|---|---|
| 2181 | ZooKeeper default service port. Note: see 9181 for ClickHouse Keeper |
| 8123 | HTTP default port |
| 8443 | HTTP SSL/TLS default port |
| 9000 | Native Protocol port (also referred to as ClickHouse TCP protocol). Used by ClickHouse applications and processes like clickhouse-server, clickhouse-client, and native ClickHouse tools. Used for inter-server communication for distributed queries. |
| 9004 | MySQL emulation port |
| 9005 | PostgreSQL emulation port (also used for secure communication if SSL is enabled for ClickHouse). |
| 9009 | Inter-server communication port for low-level data access. Used for data exchange, replication, and inter-server communication. |
| 9010 | SSL/TLS for inter-server communications |
| 9011 | Native protocol PROXYv1 protocol port |
| 9019 | JDBC bridge |
| 9100 | gRPC port |
| 9181 | Recommended ClickHouse Keeper port |
| 9234 | Recommended ClickHouse Keeper Raft port (also used for secure communication if <secure>1</secure> enabled) |
| 9363 | Prometheus default metrics port |
| 9281 | Recommended Secure SSL ClickHouse Keeper port |
| 9440 | Native protocol SSL/TLS port |
| 42000 | Graphite default port |