Tools/Promtail
Promtail
Grafana Labs' log-shipping agent, purpose-built to ship logs into Loki with labels matching Prometheus's label model. Plays the same role for the Grafana/Loki stack that Filebeat/Logstash play for Elasticsearch/Kibana — or that Fluent_Bit plays generically — a lightweight per-host/per-container agent that tails log files (or reads container stdout) and forwards them to the storage/query backend. Being superseded by Grafana Alloy, Grafana Labs' unified telemetry agent (logs + metrics + traces), but still widely deployed.