Hi all.. 

im trying understand how to make different alerts in Observium.. 

for testing im trying to creat a alert that  will hit all device and set the flag if diskspace becomes 90% used. 

For that i used the storage_perc alert and created the alert like this:

Check condition: storage_perc gt 90

Associations device match: os match *

Associations Entity match: storage_perc match *

Now the example i found in the documentation was here: http://observium.org/docs/alert_checker/ and was for mempool_perc. Now i know my storage exampel doesn't use the same entity match but thats because i don't understand what that is?

My logics behind my alert is like this.

Check condition see if storage usages reach 90% or more.

Association device is to set what devices in observium should be hit by this alert. I set mine to os match wildcard beacuse i want all device to be hit by this alert.

Association Entity im not sure i fully understand?

Any help would be apriciated... and please .. i rather be taught to fish then be given a fish :) if you know what i mean :)