Host unusual disk read rate warning
Disk is too busy (IO wait > 80%)
>>>
(
rate
(
[5m]) > .80)
The rule computes the per‑second rate of node_disk_io_time_seconds_total over the past 5 minutes and checks if it exceeds 0.80 – meaning the disk spends more than 80 % of its time in I/O wait. The alert fires whenever this condition is true, indicating the disk is unusually busy.
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