I Added Log Aggregation to My EKS Observability Stack, Metrics + Logs in One Dashboard

Last week I built an observability stack with Prometheus, Grafana, and custom alerting on EKS. The LinkedIn post got more engagement than anything I'd posted before, and two comments suggested the same thing: "Integrate Loki for logs." They were right. Metrics tell you that something is wrong. Logs tell you why . Without both in the same place, you're switching between kubectl logs and Grafana dashboards trying to correlate timestamps manually. That's not a workflow, that's a scavenger hunt. So I added Loki. What I Added Loki and Promtail, deployed via ArgoCD alongside the existing Prometheus stack: Promtail runs as a DaemonSet on every node, tailing container logs from /var/log/pods Loki stores and indexes the logs, queryable via LogQL Grafana gets a new "Logs & Metrics Correlation" dashboard with metrics and logs side by side A new Loki datasource in Grafana so both Prometheus and Loki are available in the same dashboard The entire addition was three files: an ArgoCD application for