Tables `http_logs` and friends are eating all my storage space!

Thanks for the hint @Dennis1993 , unluckily, the following does not seem to work:

$ sudo -u postgres psql -c "select pg_size_pretty( pg_relation_size( 'http_logs' ) );"  zammad
 pg_size_pretty 
----------------
 86 MB
(1 riga)

$ sudo -u zammad zammad run rails r 'HttpLog.cleanup(1.day)'

$ sudo -u postgres psql -c "select pg_size_pretty( pg_relation_size( 'http_logs' ) );"  zammad
 pg_size_pretty 
----------------
 86 MB

$ sudo -u postgres psql -c "vacuum full http_logs;"  zammad

$ sudo -u postgres psql -c "select pg_size_pretty( pg_relation_size( 'http_logs' ) );"  zammad
 pg_size_pretty 
----------------
 29 MB

and the table is not shrinking as I would expect, since all the logs are of today. However, this is at least something I can schedule to ensure the table will stay under control.