You can monitor Unravel Server through CloudWatch by creating alerts for the specific EC2 instance that hosts Unravel Server.

You can see the status of various Unravel components in the Unravel UI: Navigate to the drop-down in the top right corner of Unravel UI and select Manage | Daemons. This displays details similar to the screenshots below.

If you've set up Unravel to use RDS as its database, and you want to monitor RDS storage capacity, see Creating an AWS RDS CloudWatch Alarm for Free Storage Space for details on how to set up a CloudWatch alarm for this. Your Unravel EC2 instance must be in the same region as the target EMR clusters it will be monitoring so that, region disruption does not apply to Unravel.

The best practice is to prepare in advance for a disaster like an instance failure by backing up and restoring your deployment.

The Unravel EC2 instance must be in the same region as the target EMR clusters it's monitoring. So, no region recovery is needed. Unravel is designed to maintain business continuity but doesn't support high availability (HA).

There are multiple means by which Unravel announces and documents details of availability of new versions:

In the event of fault conditions, such as a transient failure of an AWS Service such that the availability of EC2 in a particular availability zone (AZ) is degraded, or a more permanent failure of an AWS service such that EC2 instance has faulted, or an EC2 Scheduled Maintenance Event is received, the best course of action to take in such situations is to have already made a backup of the system. Unravel is designed to maintain business continuity but doesn't support High Availability (HA).

To contact Unravel Support, visit Unravel Support. For details on support tiers, SLA, and so on, see Unravel's support policy.

Currently, there are no additional costs for obtaining support.