Unravel 4.2 Documentation

Creating an AWS RDS CloudWatch Alarm for FreeStorageSpace


This guide is to configure an AWS RDS CloudWatch Alarm for Disk FreeStorageSpace Metrics as part of RDS monitoring:

  1. Go to AWS Cloud Watch
  2. Select on the left-hand corner tab for "Alarms"
  3. Click on "Create Alarm"
  4. On the right-hand section under "RDS Metrics" and click on "Per-Database Metrics"
  5. Under the column DBInstanceIdentifier, select the database you wish to monitor for  "FreeStorageSpace" and click "Next" when you are done
  6. In "Alarm Threshold" panel, please add and complete following:
    1. "Name" - for this Database Metrics (e.g. RDS_FreeStorageSpace_for_MySQL-A)
    2. "Description" - describe what the above database metrics name you entered (e.g. Disk space monitor of RDS MySQL-A)
    3. Add free storage of 20% left to alert contact under "Whenever FreeStorageSpace" is <=  20

      I have suggested adding 20% of free storage space left, however, you can tune this to be lower.

    4. Add 10  for "10" consecutive period(s)
    5. Under Actions, add "Send notifications to", which is your SNS topic:
      Note: this sns topic should already be setup before you add it.
    6. Click "Create Alarm" to create the Alarm metrics for RDS monitoring on Storage Space
    7. Now, you will see in "Alarms" the alarm you just created, but do not be surprise when you see "INSUFFICIENT DATA" and it is ok since the alarm is not triggered, yet.  Once, it is triggered, an ALARM appears under "Alarms" tab.  In addition, email alerts will be distributed as defined in the SNS topic.
    8. Click "Create Alarm" to create the Alarm metrics for RDS monitoring on Storage Space

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