I see that AWS RDS provides a FreeStorageSpace
metric for monitoring disk usage. Now I am trying to create a generic pre-emptive alert for all my RDS but setting up an ideal threshold on FreeStorageSpace
is not making sense.
For example, 20G might be a good threshold with RDS having total disk space as 100G but might be misleading for a RDS with total disk space of 40G.
So I was wondering if there is a way to get TotalStorageSpace
or UsedStorageSpace
metric from RDS (directly or indirectly).
Update
Since the fact is established that FreeStorageSpace
is the only metric RDS provides related to disk storage, any ideas on if / how we can we build a custom metric for TotalStorageSpace
or UsedStorageSpace
?
p.s.: Creating separate alarms for each RDS for evaluating disk usage percentage seems such waste of time and resource.