Checking Whether the Destination Database Is Connected

Whether the destination database is connected

Check the connectivity and accuracy of the IP address, port number, username, and password of the destination database.

Failure cause: The connection fails.

Handling suggestion: See network preparations in the Data Replication Service Best Practices.

Failure cause: Incorrect username or password

Handling suggestion: Check whether the input username and password for the connection test are correct.

Failure cause: The database account does not allow remote connections.

Handling suggestion:

Run the following command to create a user that allows remote connections. After the migration, delete this user.

CREATE USER 'Account' @ '%' IDENTIFIED BY 'Password'

Failure cause: The database is unavailable.

Handling suggestion: Contact Huawei technical support.

Whether the destination database is connected

Check the connectivity and accuracy of the IP address, port number, username, and password of the destination database.

Failure cause: The IP address is inaccessible.

Handling suggestion: See network preparations in the Data Replication Service Best Practices.

Failure cause: The connection fails.

Handling suggestion: See network preparations in the Data Replication Service Best Practices.

Failure cause: The database account does not allow remote connections.

Handling suggestion:

Grant the remote connection permission for the user in the pg_hba.conf file because the replication instance and user are not configured in the pg_hba.conf configuration file.

Add the following to the pg_hba.conf configuration file. After the migration is complete, delete this record and restart the database for the modification to take effect.

host all xxx(dbuser) 0.0.0.0/0 password

Failure cause: Failed to connect to the database. The failure may be caused by the incorrect listen_addresses parameter value or port number in postgres.conf.

Handling suggestion: In the postgres.conf file, set listen_addresses to "*" or set the port number to the correct value. Then, restart the database for the modification to take effect.

Failure cause: Incorrect username or password

Handling suggestion: Check whether the input username and password for the connection test are correct.

Failure cause: The user does not have the login permission.

Handling suggestion:

Run the following command to grant the login permission to the user:

alter role xxx(dbuser) login

Failure cause: The postgres database does not exist in the source database.

Handling suggestion: Create a postgres database.

Whether the destination database is connected

Check the connectivity and accuracy of the IP address, port number, username, and password of the destination database.

Failure cause: The connection fails.

Handling suggestion: See network preparations in the Data Replication Service Best Practices.

Failure cause: Incorrect username or password

Handling suggestion: Check whether the input username and password for the connection test are correct.

Failure cause: The database is unavailable.

Handling suggestion: Contact Huawei technical support.

Failure cause: An internal error occurs.

Handling suggestion: Contact Huawei technical support.

Failure cause: SSL connection parameters are not configured.

Handling suggestion: Contact Huawei technical support.