List all metric names prometheus
Count total metric names and preview first 20
curl -s http://prometheus:9090/api/v1/label/__name__/values | jq '.data | length, .[0:20]'
more prometheus
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Series cardinality per job
count by (job) ({__name__=~".+"})
Silence an alert
amtool silence add alertname=HighMemory --duration=2h --comment='Investigating'
Check TSDB status
curl -s http://prometheus:9090/api/v1/status/tsdb | jq '{head_chunks: .data.headStats.numChunks, series: .data.headStats.numSeries}'
95th percentile latency from histogram
histogram_quantile(0.95, sum by(le,job)(rate(http_request_duration_seconds_bucket[5m])))
Predict disk full window
predict_linear(node_filesystem_avail_bytes{mountpoint="/"}[6h], 4*3600) < 0