I am currently looking for all CPU alerts using a query of
ALERTS{alertname="CPUUtilization"}
I am stepping through the graph time frame one click at a time.
At the 12h time, I get one entry. At 1d I get zero entries. At 2d, I get
4 entries but not the one I found at 12h. I would expect to get everything
from 2d to now.
At 1w, I get 8 entries but at 2w, I only get 5 entries. I would expect to
get everything from 2w to now.
Last week I ran this same query and found the alert I was looking for back
in April. Today I ran the same query and I cannot find that alert from
April.
I see this behavior in multiple Prometheus environments.
Is this a problem or the way the graphing works in Prometheus?
Prometheus version is 2.29.1
Prometheus retention period is 1y
DB is currently 1.2TB. There are DBs as large as 5TB in other Prometheus
environments.
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