How your system is affected when you apply a hotfix

You must understand how your StorageGRID system will be affected when you apply a hotfix.

Client applications might experience short-term disruptions

The StorageGRID system can ingest and retrieve data from client applications throughout the hotfix process; however, client connections to individual Gateway Nodes or Storage Nodes might be disrupted temporarily if the hotfix needs to restart services on those nodes. Connectivity will be restored after the hotfix process completes and services resume on the individual nodes.

You might need to schedule downtime to apply a hotfix if loss of connectivity for a short period is not acceptable. You can use selective approval to schedule when certain nodes are updated.

Alerts and alarms might be triggered

Alerts and alarms might be triggered when services are restarted and when the StorageGRID system is operating as a mixed-version environment (some grid nodes running an earlier version, while others have been upgraded to a later version). In general, these alerts and alarms will clear when the hotfix completes.

Many emails are generated

When you apply a hotfix to grid nodes, alert and alarm email notifications are generated when node services are stopped and restarted. To avoid excessive emails, you might need to do one or both of the following:
  • If you have configured alert email notifications, silence all alert rules before the hotfix is applied to the first node and remove the silence after the hotfix has been applied to all nodes.
  • If you are still receiving alarm email notifications, use the Notification Suppress All check box (Configuration > Display Options) to disable alarm notifications before you start the hotfix. Then, re-enable alarm email notifications after the hotfix has been applied to all nodes.

Configuration changes are restricted

When applying a hotfix to StorageGRID:
  • Do not make any grid configuration changes (for example, specifying Grid Network subnets or approving pending grid nodes) until the hotfix has been applied to all nodes.
  • Do not update the ILM configuration until the hotfix has been applied to all nodes.