CDB boot error: failed to load ./state/packages-in-use/1/discovery/load-dir/default.xml:3: unknown namespace: http://tail-f.com/packages/discovery in discovery
Daemon died status=10
please, can you check if required data model (fxs file) is loaded into the ConfD?
After starting ConfD, run command confd --status and search for http://tail-f.com/packages/discovery namespace in section YANG data models
Is datamodel (fxs file compiled form yang) on ConfD loadPath or --addloadpath?
See confd.conf and confd sections in the ConfD User Guide or corresponding man pages.