How to migrate users from MONGODB-CR to SCRAM-SHA-1 , when you upgrade mongoDB from version less than or equal to 2.6 to higher. Step by step to migrate user to authenticate to new one.
How to enable auth using mongodb-cr in MongoDB upto 2.6 version, enabling of username/password is simple or you can say authentication and authorization in mongoDB 2.6 or lesser version of mongodb < 3.0 using MONGODB-CR is very simple.
How to enable authentication using scram-sha-1 in MongoDB for authenticating and authorizing user priviledgeis. Learn enable auth in MongoDB for enabling user security in MongoDB in this article.