Intermediate LevelCloud Computing (AWS/GCP/Azure)
How do CloudWatch Container Insights and Prometheus exporters monitor Kubernetes EKS clusters?
❓ Interview Prompt: Explain Container Insights DaemonSets, Fluent Bit log collection, and Prometheus custom metric scraping on EKS.
Monitoring Kubernetes clusters (EKS) requires collecting infrastructure telemetry at both the node level and pod container level.
Monitoring Architecture:
1
AWS Distro for OpenTelemetry / CloudWatch Agent (DaemonSet): Runs a agent pod on every K8s node to collect node/pod CPU, memory, and disk I/O metrics automatically.
2
Fluent Bit DaemonSet: Scrapes '/var/log/containers' logs and forwards them to CloudWatch Log Groups.
3
Prometheus Scraping: Scrapes custom application metrics exposed at '/metrics' endpoints, publishing high-cardinality metrics to Amazon Managed Service for Prometheus (AMP).
Code Implementation Example
yaml
# Kubernetes Pod annotation enabling Prometheus metric scraping
metadata:
annotations:
prometheus.io/scrape: "true"
prometheus.io/port: "8080"
prometheus.io/path: "/metrics"💡Kubernetes Pod annotations for Prometheus metric scraping.
🎯 Interview Key Takeaway
Use CloudWatch Container Insights DaemonSets for K8s pod telemetry and Prometheus for custom application metrics.
#Container Insights#Prometheus#EKS#Kubernetes#Intermediate
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