# Observability
All Observability notes →What is Fluent Bit
CNCF-graduated, C-written log/metrics/trace forwarder — Fluentd's lightweight sibling, the de facto node-level log-collection DaemonSet in most Kubernetes clusters, and Grafana Alloy's main incumbent competitor for that slot.
tech observability logs collector cncf
Jul 12, 2026
What is Loki
Grafana Labs' log aggregation system — 'like Prometheus, but for logs': index only labels, store compressed chunks in object storage, query with LogQL. Shares its distributor/ingester/compactor architecture with Mimir and Tempo.
tech observability logs grafana-cloud
Jul 12, 2026