Read our upgrade guide regarding upgrade with external database.
Found in ranger log, that also data outside the database will be created unter /var/lib/cattle …
Creating CA: /var/lib/cattle/machine/7bbd7eb5-4ea2-4ac0-a4f9-00517c669737/certs/ca.pem" resourceId: =1ph121
time=“2016-04-19T11:49:05Z” level=info msg=“stdout: Creating client certificate: /var/lib/cattle/machine/7bbd7eb5-4ea2-4ac0-a4f9-00517c669737/certs/cert.pem” resourceId: =1ph121
if i follow your upgrade guide for external databases, this file would be lost, after removing the old container …
Are they still needed ?