![]() That can easily be tested especially with mysqldump, as it outputs easy to debug plain text by default. I've already tested this manually using SSH and cat or vi and things work in general: The dump within the VMs only start at the moment some reader is attached to the pipe and all data from the dump is available in the end. SSH writes, the backup software reads all available named pipes one after another. The important thing to note is that reading from the pipe blocks until something is written into it, so the SSH processes and the backup software need to run at the same time. The approach is to connect into the VMs using SSH, start the corresponding dump tool returning output on STDOUT, forward that through SSH and pipe that STDOUT of SSH into a named pipe created using mkfifo. MySQL and PostgreSQL which are hosted within multiple different VMs using the VM-host only. ![]() I want to use that feature to backup database dumps of e.g. I have a backup software able to read data to be backed up from named pipes.
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