Loki query_range via API loki
Run a range metric query over HTTP and extract result with jq. step is in seconds.
curl -sG "$LOKI_ADDR/loki/api/v1/query_range" --data-urlencode 'query=sum(rate({app="api"}[5m]))' --data-urlencode 'step=60' | jq '.data.result'
more loki
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Push log lines to Loki
curl -s -H 'Content-Type: application/json' -XPOST "$LOKI_ADDR/loki/api/v1/push" -d '{"streams":[{"stream":{"app":"test"},"values":[["'$(date +%s%N)'","hello loki"]]}]}'
Parse JSON logs and reshape line
{app="api"} |= "error" | json | line_format "{{.level}} {{.msg}}"
Per-level log rate
sum by (level) (rate({app="api"} | logfmt [5m]))
Quantile over unwrapped latency
quantile_over_time(0.99, {app="api"} | json | unwrap latency_ms [5m]) by (route)
Count matching lines over time
sum(count_over_time({namespace="prod"} |~ "timeout|deadline exceeded" [1m]))