@jeffrey6f729b2968bb9ab9eaf

Unless their setup has changed recently, you shouldn’t need to create a separate user. The plugin runs as the user and group that currently owns your files and directories – if that’s www-data, then that’s who the plugin will run as and who the plugin will use to restore files if required.

If you specify another user and files and directories are restored as that user and group, you may run in to issues and have to reset the ownership back to www-data in the event you do need to restore.

By default, files are generally chmod 644 and directories chmod 755.

In the the case of writing files to a directory, a chmod of 755 only provides write permissions to the owner, not the group or other. So even though your vaultpress user is a member of www-data, the group, they are not the owner.

In the case of files, 644 only provides read and write to the owner, while only providing read to the group and other. So, much like with directories, if vaultpress tries to write to a file, it wont be able to.

…

If your files and directories are owned by www-data:www-data, then that’s what the plugin would and should use.