[Deployment] Missing Health Check Endpoints

[ramkri123]

Current State

• Limited health check endpoints
• No liveness/readiness probes
• Missing dependency health checks

Issues

• Cannot determine if service is healthy
• Orchestrators cannot restart unhealthy services
• No dependency health tracking
• Cannot implement proper load balancing

Required

• Add /health endpoint to all services
• Implement liveness probes (is process running?)
• Implement readiness probes (can accept requests?)
• Add dependency health checks:
  • Database connectivity (SQLite)
  • TPM availability
  • External API availability (CAMARA)
  • Upstream service availability
• Return appropriate HTTP status codes:
  • 200: Healthy
  • 503: Unhealthy (not ready)
  • 500: Fatal error
• Document health check behavior

Location

• mobile-sensor-microservice/service.py (needs /health endpoint)
• TPM Plugin Server (has /health but needs enhancement)
• All services need health endpoints

Related

From PRODUCTION_READINESS_ANALYSIS.md - Section 6.2