I am using bosh to deploy one database cluster on n instances. After that while scaling cluster I want to add one more instance to this cluster (so new cluster size will be n+1). I am changing manifest file to have instances value as n+1. When I am executing deploy command with modified manifest file, it is creating cluster of n+1 instances (n old instances and 1 new VM started). It is as per expectation. But in this process, job (database service) on all instances got restarted. I just want to add new instance without disturbing running jobs (services) on already running VMs. How to achieve this?