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Backing Up That Linux-Based Database

David Klee shows how to back up a SQL Server on Linux database over the network:

As of SQL Server 2017 RC2, we’ll want to accomplish it in a way that is transparent to SQL Server. (Depending on the RTM version whenever it is released, I might change the recommendation on this.) To do this, we’ll want to create a folder on the local file system that actually maps to a remote network share for SQL Server backups.

SSH into your server without elevated privileges at this point.

The network share is presented from a Windows server with the SMB protocol. Linux can connect to this using a compatible protocol called CIFS, or Common Internet File System. We’ll need to install the packages so we can natively connect. On Ubuntu and other Linux distros, the easiest is with the cifs-utils package. To install from the package manager is as simple as this.

Sadly, that credentials file cannot be encrypted.