/var/lib/prometheus/

/var/lib/prometheus/
/var/lib/prometheus/metrics2/
/var/lib/prometheus/node-exporter/

--storage.tsdb.path
--storage.tsdb.retention.time (Defaults to 15d)
--storage.tsdb.retention.size 
--storage.tsdb.wal-compression

Related

TSDB
/var/log/sysstat/
/var/lib/prometheus/

• https://prometheus.io/docs/prometheus/latest/storage/#operational-aspects

See also

• Prometheus: Prometheus installation, 9090, storage, Prometheus exporters: Node exporter 9100, Blackbox exporter, Prometheus alertmanager (changelog), Prometheus versions, Prometheus Node exporter releases, promtool, amtool, tsdb, /etc/default/prometheus, /etc/prometheus/prometheus.yml, journalctl -u prometheus, /etc/default/prometheus-node-exporter, PromQL, alert:, Prometheus Operator, Thanos, VictoriaMetrics, PushGateway, Prometheus API, values.yml, Amazon Managed Service for Prometheus