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Agent Lifecycle Operations (Auto-Update, Certificate Management, Configuration, Bootstrap, Doctor, Remediation)

Module

ReleaseOrchestrator

Status

IMPLEMENTED

Description

Comprehensive agent lifecycle system: auto-update with staged rollouts and DSSE-signed bundles, mTLS certificate provisioning and renewal, configuration management with server-side push and drift detection, zero-touch bootstrap with time-limited tokens, 11 diagnostic health checks (Doctor), and guided remediation engine with pattern-based auto-fix and dry-run support.

Implementation Details

  • Modules: src/ReleaseOrchestrator/__Agents/StellaOps.Agent.Core/
  • Key Classes:
    • AgentUpdateManager (src/ReleaseOrchestrator/__Agents/StellaOps.Agent.Core/Updates/AgentUpdateManager.cs) - auto-update with staged rollouts and DSSE-signed bundles
    • AgentCertificateManager (src/ReleaseOrchestrator/__Agents/StellaOps.Agent.Core/Certificates/AgentCertificateManager.cs) - mTLS certificate provisioning and renewal
    • AgentConfigManager (src/ReleaseOrchestrator/__Agents/StellaOps.Agent.Core/Configuration/AgentConfigManager.cs) - configuration management with drift detection
    • BootstrapService (src/ReleaseOrchestrator/__Agents/StellaOps.Agent.Core/Bootstrap/BootstrapService.cs) - zero-touch bootstrap with time-limited tokens
    • BootstrapTokenService (src/ReleaseOrchestrator/__Agents/StellaOps.Agent.Core/Bootstrap/BootstrapTokenService.cs) - token generation for bootstrap
    • AgentDoctor (src/ReleaseOrchestrator/__Agents/StellaOps.Agent.Core/Doctor/AgentDoctor.cs) - diagnostic health checks
    • RemediationEngine (src/ReleaseOrchestrator/__Agents/StellaOps.Agent.Core/Doctor/RemediationEngine.cs) - pattern-based auto-fix with dry-run support
    • RemediationPatterns (src/ReleaseOrchestrator/__Agents/StellaOps.Agent.Core/Doctor/Patterns/RemediationPatterns.cs) - remediation pattern definitions
    • AgentHealthChecks (src/ReleaseOrchestrator/__Agents/StellaOps.Agent.Core/Doctor/Checks/AgentHealthChecks.cs) - 11 diagnostic health check implementations
  • Source: SPRINT_20260117_041_ReleaseOrchestrator_agent_operations.md

E2E Test Plan

  • Bootstrap an agent with a time-limited token and verify it registers and obtains certificates
  • Verify auto-update: deploy a new agent version and confirm staged rollout to registered agents
  • Verify certificate renewal: agent with expiring certificate automatically renews before expiry
  • Verify AgentDoctor runs all 11 health checks and produces a diagnostic report
  • Verify remediation: trigger a known failure pattern and confirm RemediationEngine applies the auto-fix
  • Verify dry-run: run remediation in dry-run mode and confirm no changes are applied