Help Center > > Developer Guide> Data Export> Using gs_dump and gs_dumpall to Export Data> Exporting All Databases> Exporting Global Objects

Exporting Global Objects

Updated at: Sep 17, 2021 GMT+08:00

You can use gs_dumpall to export global objects from GaussDB(DWS), including database users, user groups, tablespaces, and attributes (for example, global access permissions).

Procedure

  1. Prepare an ECS as the gsql client host.
  2. Log in to the server as the root user and run the following command to go to the data storage path:

    1
    cd /opt/bin
    

  3. Use gs_dumpall to run the following command to export tablespace objects.

    gs_dumpall -W Bigdata@123 -U omm -f /home//backup/MPPDB_tablespace.sql -p 8000 -h 10.10.10.100 -t
    Table 1 Common parameters

    Parameter

    Description

    Example Value

    -U

    Username for database connection. The user must be a cluster administrator.

    -U omm

    -W

    User password for database connection.

    • This parameter is not required for database administrators if the trust policy is used for authentication.
    • If you connect to the database without specifying this parameter and you are not a database administrator, you will be prompted to enter the password.

    -W Bigdata@123

    -f

    Folder to store exported files. If this parameter is not specified, the exported files are stored in the standard output.

    -f /home//backup/MPPDB_tablespace.sql

    -p

    Name extension of the TCP port on which the server is listening or the local Unix domain socket. This parameter is configured to ensure connections.

    -p 8000

    -h

    Cluster address: If a public network address is used for connection, set this parameter to Public Network Address or Public Network Domain Name. If a private network address is used for connection, set this parameter to Private Network Address or Private Network Domain Name.

    -h 10.10.10.100

    -t

    Dumps only tablespaces. You can also use --tablespaces-only alternatively.

    -

    For details about other parameters, see "gs_dumpall" in the Tool Guide.

Examples

Example 1: Use gs_dumpall to run the following command as a cluster administrator omm to export information of global tablespaces and users in a cluster. The exported files are in text format.

gs_dumpall -W Bigdata@123 -U omm -f /home//backup/MPPDB_globals.sql -p 8000 -h 10.10.10.100 -g
gs_dumpall[port=''][2018-11-14 19:06:24]: dumpall operation successful
gs_dumpall[port=''][2018-11-14 19:06:24]: total time: 1150  ms

Example 2: Use gs_dumpall to run the following command as a cluster administrator omm to export global tablespaces in a cluster, encrypt the exported files, and store them in text format.

gs_dumpall -W Bigdata@123 -U omm -f /home//backup/MPPDB_tablespace.sql -p 8000 -h 10.10.10.100 -t --with-encryption AES128 --with-key 1212121212121212
gs_dumpall[port=''][2018-11-14 19:00:58]: dumpall operation successful
gs_dumpall[port=''][2018-11-14 19:00:58]: total time: 186  ms

Example 3: Use gs_dumpall to run the following command as a cluster administrator omm to export information of global users in a cluster. The exported files are in text format.

gs_dumpall -W Bigdata@123 -U omm -f /home//backup/MPPDB_user.sql -p 8000 -h 10.10.10.100 -r
gs_dumpall[port=''][2018-11-14 19:03:18]: dumpall operation successful
gs_dumpall[port=''][2018-11-14 19:03:18]: total time: 162  ms

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