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list-ports-used-in-nebulagraph #2019

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33 changes: 33 additions & 0 deletions docs-2.0/20.appendix/0.FAQ.md
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Expand Up @@ -538,6 +538,39 @@ If you have customized the configuration files and changed the predefined ports,

For those eco-tools, see the corresponding document.

The following are the default ports used by NebulaGraph core and peripheral tools.

| No. | Product / Service | Type | Default | Description |
| :--- | :--------------------- | :--- | :---------------------------- | :----------------------------------------------------------- |
| 1 | NebulaGraph | TCP | 9669 | Graph service RPC daemon listening port (commonly used for client connections to the Graph service). |
| 2 | NebulaGraph | TCP | 19669 | Graph service HTTP port. |
| 3 | NebulaGraph | TCP | 19670 | Graph service HTTP/2 port. (Deprecated after version 3.x) |
| 4 | NebulaGraph | TCP | 9559 | Meta service RPC daemon listening port. (Commonly used by Graph and Storage services for querying and updating metadata in the graph database). |
| 5 | NebulaGraph | TCP | 9560 | Raft communication port between Meta services. |
| 6 | NebulaGraph | TCP | 19559 | Meta service HTTP port. |
| 7 | NebulaGraph | TCP | 19560 | Meta service HTTP/2 port. (Deprecated after version 3.x) |
| 8 | NebulaGraph | TCP | 9777 | Drainer service port in Storage services (exposed only in Enterprise Edition clusters). |
| 9 | NebulaGraph | TCP | 9778 | Admin service port in Storage services. |
| 10 | NebulaGraph | TCP | 9779 | Storage service RPC daemon listening port. (Commonly used by Graph services for data storage-related operations, such as reading, writing, or deleting data). |
| 11 | NebulaGraph | TCP | 9780 | Raft communication port between Storage services. |
| 12 | NebulaGraph | TCP | 19779 | Storage service HTTP port. |
| 13 | NebulaGraph | TCP | 19780 | Storage service HTTP/2 port. (Deprecated after version 3.x) |
| 14 | NebulaGraph | TCP | 8888 | Backup and restore Agent service port. The Agent is a daemon running on each machine in the cluster, responsible for starting and stopping NebulaGraph services and uploading and downloading backup files. |
| 15 | NebulaGraph | TCP | 9789, 9790, and 9788 | Full-text index Raft Listener port, which reads data from Storage services and writes it to the Elasticsearch cluster.<br/>Also the port for Storage Listener in inter-cluster data synchronization, used for synchronizing Storage data from the primary cluster. Ports 9790 and 9788 are generated by adding and subtracting one from port 9789. |
| 16 | NebulaGraph | TCP | 9200 | NebulaGraph uses this port for HTTP communication with Elasticsearch to perform full-text search queries and manage full-text indexes. |
| 17 | NebulaGraph | TCP | 9569, 9570, and 9568| Meta Listener port in inter-cluster data synchronization, used for synchronizing Meta data from the primary cluster. Ports 9570 and 9568 are generated by adding and subtracting one from port 9569. |
| 18 | NebulaGraph | TCP | 9889, 9890, and 9888 |Drainer service port in inter-cluster data synchronization, used for synchronizing Storage and Meta data to the primary cluster. Ports 9890 and 9888 are generated by adding and subtracting one from port 9889. |
| 19 | NebulaGraph Studio | TCP | 7001 | Studio web service port. |
| 20 | NebulaGraph Dashboard | TCP | 8090 | Nebula HTTP Gateway dependency service port. Provides an HTTP interface for cluster services to interact with the NebulaGraph database using nGQL statements. |
| 21 | NebulaGraph Dashboard | TCP | 9200 | Nebula Stats Exporter dependency service port. Collects cluster performance metrics, including service IP addresses, versions, and monitoring metrics (such as query count, query latency, heartbeat latency, etc.). |
| 22 | NebulaGraph Dashboard | TCP | 9100 | Node Exporter dependency service port. Collects resource information for machines in the cluster, including CPU, memory, load, disk, and traffic. |
| 23 | NebulaGraph Dashboard | TCP | 9090 | Prometheus service port. Time-series database for storing monitoring data. |
| 24 | NebulaGraph Dashboard | TCP | 7003 | Dashboard Community Edition web service port. |
| 25 | NebulaGraph Dashboard | TCP | 7005 | Dashboard Enterprise Edition web service port. |
| 26 | NebulaGraph Dashboard | TCP | 9093 | Alertmanager service port. Receives alerts from Prometheus and sends alert notifications to Dashboard. |
| 27 | NebulaGraph Explorer | TCP | 7002 | Explorer web service port. |


### "How to test whether a port is open or closed?"

You can use telnet as follows to check for port status.
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