Infrastructure monitoring
Disk monitoring
Storage space and read/write speeds.
Overview
The Capture agent reports one disk entry per mounted filesystem, with space, inode, and I/O counters.
Fields reported
Per disk:
device,mountpoint— identifying pairtotal_bytes,used_bytes,free_bytes,usage_percent— spacetotal_inodes,used_inodes,free_inodes,inodes_usage_percent— inodesread_bytes,write_bytes,read_time,write_time— I/O counters
Running out of inodes (common on filesystems with lots of small files) fails writes the same way as running out of space, so both thresholds are worth watching.
Optional S.M.A.R.T. disk health data is reported when Capture runs as a binary with smartmontools installed. See Installing Capture agent for the setup.
A warning threshold at 80% usage_percent gives you time to clean up or expand before writes start failing.