Is there a way to make an alarm on cloudwatch for my RDS instances based on % free disk (i know i can turn on enhanced monitoring and that metric is there, but i can't use those metrics on cloudwatch alarms) if not is there a good way out ?
2 Answers
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RDS doesn't report percentage of disk space free, but it does report the amount of free space available. See the list of CloudWatch metrics available for your RDS instances here.
You would need to create alarms on the FreeStorageSpace metric reported by each of your instances.
0
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See an option using Enhanced Monitoring and log metrics enter link description. Basically you can turn on enhanced monitoring for RDS and then parse the JSON logs to get the usedPercentage value for the storage filesystem. This can be turned into a log metric that can be associated with an alarm.
