Special thanks to the tip at http://www.zenoss.com/Members/netdata/show-the-usage-in-a-filesytem-threshold/ for helping me solve the problem with getting the percentage of used space shown in the /Perf/Filesystem events.
To this approach, I added the following:
- Calculation and display of the amount of free space in GB
- Changing the severity of the event to 'critical' (red) when the percentage of free space is 5% or less
The transform entered on http://<your Zenoss server>:8080/zport/dmd/Events/Perf/Filesystem becomes:
fs_id = device.prepId(evt.component)
for f in device.os.filesystems():
if f.id != fs_id: continue
p = (float(f.usedBytes()) / f.totalBytes()) * 100
freeAmtGB = (float(f.totalBytes() - f.usedBytes())) / 1024 / 1024 / 1024
evt.summary = "Disk space low: %3.1f%% used (%3.2f GB free)" % (p, freeAmtGB)
if p >= 95.0: evt.severity = 5
break
Zenoss News
