About CKAN Sample Dataset
You can use "ckan seed" to create sample datasets e.g. ckan seed basic , which creates two datasets: annakarenina warandpeace BUT, after you delete the two datasets, either via User Interface OR CLI: ckan dataset delete annakarenina ckan dataset purge annakarenina You cannot run the "ckan seed basic" again to regenerate the two datasets. Why? Since there are two records still in table "group" and 5 records created in table "user" (They are created by "ckan seed basic" ). Remove those records and then you can run the "ckan seed basic" again.