Run rake task on all or selected tenants

To run the rake user:list[email,foobar] task within the context of all tenants:

• rake tenantize:task[user:list,email,foobar]

To run the task only in specified tenants, use an environment variable named tenants, with each tenant cname separated by a space:

• rake tenantize:task[user:list,email,foobar] tenants="foo.localhost baz.localhost quuuuux.localhost"

See code for this feature here