Fixing the failed to connect to the destination cluster to get type information error

Issue descriptionIssue description

When running a transfer, you see the following error message:

Cannot retrieve table information from the source database: failed to resolve storage: failed to connect to the destination cluster to get type information: unable to get master host: unable to create service_name service client: All hosts are unavailable
hostname resolving error (lookup host_name.mdb.yandexcloud.net on 127.0.0.1:53) failed to connect to `host=host_name.mdb.yandexcloud.net user= database=`: hostname resolving error

SolutionSolution

Most likely, the settings of the cloud subnet of the target cluster or source cluster in this transfer include addresses of third-party DNS servers. In this case, when running a transfer, you will get the hostname resolving error message.

For more information, see Networking in Yandex Data Transfer.

To fix this issue, you can either set up the third-party DNS servers to resolve the clusters host names or add the cluster endpoint by its IP address (as an external installation).