You should avoid below changes into the product, to safeguard metrics/data stored :
- Do not reboot/manipulate Aria Operations VMs (Cluster Nodes) outside Admin UI (i.e. reboot VMs from vCenter without taking cluster offline first)
- Do not delete Dashboards/Policies/Views/Reports/Alert Definition or any other custom content from Product UI without first cloning or taking a backup
- Do not delete more than one node in the cluster without HA enabled
- Do not delete a node in a non-HA cluster
- Do not move Cluster nodes in different DCs
- Do not delete objects from Operations > Configurations > Inventory Management as this will also remove its historical data.
- Do not delete an adapter instance from Administration > Integrations, including related objects. This will also delete historical data.
- Do not delete Cloud Proxies that are managing telegraf agents
- Do not delete Cloud Proxies that are part of CP with Persistence option enabled
From CLI/ssh standpoint, you should avoid running any : cp, mv, rm, dd, vi, DB commands without prior taking VM snapshot or backup.
For more info about snapshots, please refer to this Snapshot creation in Aria Operations