I would like to know which metrics of the filesystem are you using to create an alert to send by email, the detail here is I would like to send an alert when the disk C: or /opt/ hit 90%, for example.
I installed the metricbeat on the server. The metrics are showing. I installed the system module.
I found the metric: system.filesystem.used.bytes, however, the metric do not allow to the creation of an alert by percentage.
Could someone help me in this case?