# Add Helm repo
helm repo add open-telemetry https://open-telemetry.github.io/opentelemetry-helm-charts
helm repo update

# Install with basic config
helm install otel-collector open-telemetry/opentelemetry-collector \
  --namespace monitoring --create-namespace \
  --set mode=daemonset

# gRPC endpoint: 4317, HTTP endpoint: 4318
curl -X POST http://otel-collector:4318/v1/traces \
  -H "Content-Type: application/json" \
  -d '{"resourceSpans":[]}'

config:
  receivers:
    otlp:
      protocols:
        grpc:
          endpoint: ${env:MY_POD_IP}:4317
        http:
          endpoint: ${env:MY_POD_IP}:4318

  processors:
    batch:
      timeout: 10s
      send_batch_size: 1024
    memory_limiter:
      check_interval: 5s
      limit_percentage: 80
      spike_limit_percentage: 25

  exporters:
    prometheusremotewrite:
      endpoint: "http://prometheus:9090/api/v1/write"
    loki:
      endpoint: "http://loki:3100/loki/api/v1/push"

  service:
    pipelines:
      metrics:
        receivers: [otlp]
        processors: [memory_limiter, batch]
        exporters: [prometheusremotewrite]
      logs:
        receivers: [otlp]
        processors: [memory_limiter, batch]
        exporters: [loki]
      traces:
        receivers: [otlp]
        processors: [memory_limiter, batch]
        exporters: [otlp/tempo]

processors:
  k8sattributes:
    auth_type: "serviceAccount"
    passthrough: false
    filter:
      node_from_env_var: ${env:K8S_NODE_NAME}
    extract:
      metadata:
        - k8s.pod.name
        - k8s.namespace.name
        - k8s.deployment.name
        - k8s.node.name

# Check collector pods
kubectl get pods -n monitoring -l app.kubernetes.io/name=otel-collector

# View collector logs
kubectl logs -n monitoring -l app.kubernetes.io/name=otel-collector --tail=100

# Test OTLP endpoint
kubectl run test-otlp --image=curlimages/curl:latest --rm -it -- \
  curl -v http://otel-collector.monitoring:4318/v1/traces

# Validate config syntax
otelcol validate --config=config.yaml

mode: "daemonset"  # or "deployment"
presets:
  logsCollection:
    enabled: true
  hostMetrics:
    enabled: true
  kubernetesAttributes:
    enabled: true
  kubeletMetrics:
    enabled: true
useGOMEMLIMIT: true
resources:
  limits:
    cpu: 500m
    memory: 1Gi
  requests:
    cpu: 100m
    memory: 256Mi