source_connect-to-nebula-graph

This topic provides basic instruction on how to use the native CLI client NebulaGraph Console to connect to NebulaGraph.

caution

When connecting to NebulaGraph for the first time, you must register the Storage Service before querying data.

NebulaGraph supports multiple types of clients, including a CLI client, a GUI client, and clients developed in popular programming languages. For more information, see the client list.

Prerequisites

• You have started [NebulaGraph services](https://docs.nebula-graph.io/3.11.0/4.deployment-and-installation/manage-service/).

• The machine on which you plan to run NebulaGraph Console has network access to the Graph Service of NebulaGraph.

• The NebulaGraph Console version is compatible with the NebulaGraph version.

  note

  NebulaGraph Console and NebulaGraph of the same version number are the most compatible. There may be compatibility issues when connecting to NebulaGraph with a different version of NebulaGraph Console. The error message incompatible version between client and server is displayed when there is such an issue.

:::

Steps

1. On the NebulaGraph Console releases page, select a NebulaGraph Console version and click Assets.

note

It is recommended to select the latest version.

2. In the Assets area, find the correct binary file for the machine where you want to run NebulaGraph Console and download the file to the machine.

3. (Optional) Rename the binary file to nebula-console for convenience.

note

For Windows, rename the file to nebula-console.exe.

4. On the machine to run NebulaGraph Console, grant the execute permission of the nebula-console binary file to the user.

note

For Windows, skip this step.

$ chmod 111 nebula-console

5. In the command line interface, change the working directory to the one where the nebula-console binary file is stored.

6. Run the following command to connect to NebulaGraph.

• For Linux or macOS:

$ ./nebula-console -addr <ip> -port <port> -u <username> -p <password>
[-t 120] [-e "nGQL_statement" | -f filename.nGQL]

• For Windows:

> nebula-console.exe -addr <ip> -port <port> -u <username> -p <password>
[-t 120] [-e "nGQL_statement" | -f filename.nGQL]

Parameter descriptions are as follows:

Parameter	Description
-h/-help	Shows the help menu.
-addr/-address	Sets the IP (or hostname) of the Graph service. The default address is 127.0.0.1.
-P/-port	Sets the port number of the graphd service. The default port number is 9669.
-u/-user	Sets the username of your NebulaGraph account. Before enabling authentication, you can use any existing username. The default username is root.
-p/-password	Sets the password of your NebulaGraph account. Before enabling authentication, you can use any characters as the password.
-t/-timeout	Sets an integer-type timeout threshold of the connection. The unit is millisecond. The default value is 120.
-e/-eval	Sets a string-type nGQL statement. The nGQL statement is executed once the connection succeeds. The connection stops after the result is returned.
-f/-file	Sets the path of an nGQL file. The nGQL statements in the file are executed once the connection succeeds. The result will be returned and the connection stops then.
-enable_ssl	Enables SSL encryption when connecting to NebulaGraph.
-ssl_root_ca_path	Sets the storage path of the certification authority file.
-ssl_cert_path	Sets the storage path of the certificate file.
-ssl_private_key_path	Sets the storage path of the private key file.

For information on more parameters, see the project repository.