Procedures for upgrading Scylla Manager from 1.3 to 1.4.
Upgrade Guide - Scylla Manager 1.3.x to 1.4.x on CentOS 7
Upgrade Guide - Scylla Manager 1.3.x to 1.4.x on Ubuntu 16
Scylla Manager Metrics Update - Scylla Manager 1.3 to 1.4