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This post shows how to instrument a Node.js app with the OpenTelemetry SDK and route signals (metrics, logs, traces) through an OTel Collector to backends, using components from the Grafana LGTM stack
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Grafana Loki is an open-source logging platform from Grafana Labs. By only indexing the metadata about the log labels it works on a small index which makes it very cost-effective
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In this post we are utilizing the Grafana log stack with Loki and Promtail for receiving, indexing and visualizing firewall logs from OPNsense
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