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Network ports

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Port Description Cloud OSS
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 ✓
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