Gaurab/nrdot plus helm chart

[gmanandhar-nr]

Description

This PR introduces the NRDOT Plus collector with Adaptive Telemetry Processor (ATP) as a new chart, independent of the standard nr-k8s-otel-collector. The chart includes ATP features enabled by default for intelligent process metrics filtering.

ATP Integration

• Enabled process and processes scrapers in hostmetrics receiver
• Added adaptivetelemetryprocessor configuration with:
  • Storage path: /var/lib/nrdot-collector/adaptivetelemetry.db
  • Configurable thresholds for CPU/memory utilization
  • Dynamic threshold adjustment with smoothing
  • Multi-metric composite scoring (CPU + memory weights)
  • Anomaly detection with history tracking
• Added attributes/atp_identifier processor to tag ATP-processed metrics
• Processors only defined when both flags are enabled: nrdot_plus.enabled && nrdot_plus.atp

Pipeline Architecture

• Unified metrics/nr pipeline: All metrics (system + process + k8s) flow through single pipeline
• ATP processors conditionally included in metrics/nr pipeline based on flags
• ATP intelligently filters: Only processes process-level metrics, passes through system/k8s metrics unchanged
• Removed separate process pipeline: Consolidated from previous multi-pipeline approach

Volume Mounts

• Conditional ATP storage volume:
  • Volume mount at /var/lib/nrdot-collector only created when atp flag is set to true
  • HostPath volume for ATP database persistence
  • No unnecessary volumes when ATP disabled

Low Data Mode

• Whitelisted all process. and processes. metrics** in low data mode
• System and k8s metrics continue using existing low data mode filters
• Ensures process metrics are preserved for ATP analysis

Testing

• Tested in AKS cluster with custom collector image including ATP
• Verified process metrics appear in New Relic

[gmanandhar-nr]

we will replace this once we have an official build.