Hi Falko, >> Apparently a shell is required to use a jump host from the ssh command in >> this situation? > > There's an analysis about apparently same problem: > > https://unix.stackexchange.com/questions/457692/does-ssh-proxyjump-require-local-shell-access > > They mention, that setting the "SHELL" variable is sufficient
Good catch! As often with StackExchange, the first answer is not the correct answer. :-) The answer at https://unix.stackexchange.com/a/496092 seems to hit the nail on the head: > Basically I think SSH is trying to be clever and looking up the user's shell > and then running the proxy command using the shell. But when the shell > doesn't exist it fails. > > If you set the environment variable SHELL before you run ssh then it will fix > the problem. Unfortunately, this work-around (inserting an environment variable) seems incompatible with the current way BackupPC executes the commands. The /sbin/nologin shell assignment doesn't really add that much security, but it would be cool if it still was possible to initiate SSH commands while using jump hosts without having to assign a shell to the BackupPC user. Cheers! Pim _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
