Configuring the agentless feature after upgrading NetBackup Snapshot Manager
User must install and enable the OpenSSH Server, enable port 22 from security groups and firewall.
After upgrade the cloud assets which were already in connected state, continues to work. If you want to change the asset's credentials for Linux agentless instance(s), which are already in connected state, the credentials must be associated and updated for the asset(s) from credential management.