We are using prometheus operator and we want now to store the data on disk, There is a blog that explain it, but not sure about the numbers /size response that coming from the query
https://www.robustperception.io/how-much-disk-space-do-prometheus-blocks-use
I use in the Prometheus query UI
rate(prometheus_tsdb_compaction_chunk_size_bytes_sum[24h]) / rate(prometheus_tsdb_compaction_chunk_samples_sum[24h])
and got values
endpoint="web",instance="100.96.10.7:9090",job="per-prometheus",namespace="monitoring",pod="per-prometheus-1",service="per-prometheus"}
value 0.9017483000151686
{endpoint="web",instance="100.96.7.10:9090",job="per-prometheus",namespace="monitoring",pod="per-prometheus-0",service="per-prometheus"}
value = 0.880271256152723
My question is what is this numbers , is it size in GB ?
is it 0.88027125615272 + 0.9017483000151686 = 1.8 GB?
That number is bytes per sample. Taking the number as 0.9 that means that if you were ingesting 1000 samples per second, that'd be .9*1000*86400 = ~75MB per day as an example.