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infrastructure/monitoring/k8s-infra/README.md

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+# Kubernetes Infrastructure Monitoring
+
+This directory contains configurations for deploying Kubernetes infrastructure monitoring components that integrate with SigNoz.
+
+## Components
+
+| Component | Purpose | Metrics Endpoint |
+|-----------|---------|------------------|
+| **kube-state-metrics** | Kubernetes object metrics (pods, deployments, nodes, etc.) | `:8080/metrics` |
+| **node-exporter** | Host-level metrics (CPU, memory, disk, network) | `:9100/metrics` |
+
+## Quick Start (MicroK8s Production)
+
+```bash
+# 1. Deploy infrastructure monitoring components
+./deploy-k8s-infra-monitoring.sh --microk8s install
+
+# 2. Upgrade SigNoz to scrape the new metrics
+microk8s helm3 upgrade signoz signoz/signoz \
+  -n bakery-ia \
+  -f ../signoz/signoz-values-prod.yaml
+```
+
+## Usage
+
+### Install
+
+```bash
+# Standard Kubernetes
+./deploy-k8s-infra-monitoring.sh install
+
+# MicroK8s
+./deploy-k8s-infra-monitoring.sh --microk8s install
+```
+
+### Upgrade
+
+```bash
+./deploy-k8s-infra-monitoring.sh --microk8s upgrade
+```
+
+### Uninstall
+
+```bash
+./deploy-k8s-infra-monitoring.sh --microk8s uninstall
+```
+
+### Check Status
+
+```bash
+./deploy-k8s-infra-monitoring.sh --microk8s status
+```
+
+### Dry Run
+
+```bash
+./deploy-k8s-infra-monitoring.sh --microk8s --dry-run install
+```
+
+## Files
+
+- `kube-state-metrics-values.yaml` - Helm values for kube-state-metrics
+- `node-exporter-values.yaml` - Helm values for node-exporter
+- `deploy-k8s-infra-monitoring.sh` - Deployment automation script
+
+## SigNoz Integration
+
+The SigNoz OTel Collector is configured (in `signoz-values-prod.yaml`) to scrape metrics from:
+
+- `kube-state-metrics.bakery-ia.svc.cluster.local:8080`
+- `node-exporter-prometheus-node-exporter.bakery-ia.svc.cluster.local:9100`
+
+After deploying these components, metrics will appear in SigNoz under:
+- **Infrastructure** > **Kubernetes** (for K8s object metrics)
+- **Infrastructure** > **Hosts** (for node metrics)
+
+## Metrics Available
+
+### From kube-state-metrics
+
+- Pod status, phase, restarts
+- Deployment replicas (desired vs available)
+- Node conditions and capacity
+- PVC status and capacity
+- Resource requests and limits
+- Job/CronJob status
+
+### From node-exporter
+
+- CPU usage per core
+- Memory usage (total, free, cached)
+- Disk I/O and space
+- Network traffic (bytes in/out)
+- System load average
+- Filesystem usage
+
+## Troubleshooting
+
+### Check if metrics are being scraped
+
+```bash
+# Port-forward to kube-state-metrics
+microk8s kubectl port-forward svc/kube-state-metrics 8080:8080 -n bakery-ia &
+curl localhost:8080/metrics | head -50
+
+# Port-forward to node-exporter
+microk8s kubectl port-forward svc/node-exporter-prometheus-node-exporter 9100:9100 -n bakery-ia &
+curl localhost:9100/metrics | head -50
+```
+
+### Check OTel Collector logs
+
+```bash
+microk8s kubectl logs -l app.kubernetes.io/name=signoz-otel-collector -n bakery-ia --tail=100
+```
+
+### Verify pods are running
+
+```bash
+microk8s kubectl get pods -n bakery-ia | grep -E "(kube-state|node-exporter)"
+```