# Feature Specification: Infrastructure Operations & Deployment Automation

**Feature Branch**: `002-infra-ops`
**Created**: 2026-04-20
**Status**: Draft
**Input**: User description: "Infrastructure operations and deployment automation including Docker Compose configurations, container orchestration, monitoring, backup/recovery, and maintenance procedures for the NAP-DMS system"

## Clarifications

### Session 2026-04-20

- Q: Which services are included in Infrastructure Operations scope beyond NAP-DMS applications?
- A: All services in Docker Compose stacks including Gitea, n8n, RocketChat, and supporting services

- Q: What is the expected data volume and annual growth rate for all services?
- A: 500GB current data with 20% annual growth

- Q: What external services or third-party integrations are required beyond internal services?
- A: Email SMTP for notifications and Let's Encrypt for SSL certificates

- Q: What are the concurrent user count and performance targets for response time?
- A: 100 concurrent users with 2-second average response time

- Q: What technical constraints exist (budget, hardware, compliance requirements)?
- A: Must work with existing QNAP/ASUSTOR hardware infrastructure

## User Scenarios & Testing _(mandatory)_

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### User Story 1 - Zero-Downtime Deployment (Priority: P1)

As a DevOps engineer, I need to deploy updates for all services (NAP-DMS applications, databases, monitoring, Gitea, n8n, RocketChat, and supporting services) without interrupting user access to any system components.

**Why this priority**: Critical for business continuity - system cannot afford downtime during regular maintenance windows.

**Independent Test**: Can be fully tested by deploying a test application version using blue-green containers and verifying traffic switches seamlessly without user session interruption.

**Acceptance Scenarios**:

1. **Given** a running production environment, **When** I deploy a new version, **Then** users continue accessing the system without interruption
2. **Given** a deployment failure, **When** the rollback is triggered, **Then** the system immediately switches back to the previous stable version

---

### User Story 2 - Automated Backup & Recovery (Priority: P1)

As a system administrator, I need automated daily backups of all services data (NAP-DMS applications, databases, monitoring, Gitea, n8n, RocketChat, configurations, and supporting services) and the ability to restore the entire system within 4 hours of a catastrophic failure.

**Why this priority**: Essential for data protection and business continuity compliance with document management regulations.

**Independent Test**: Can be fully tested by running backup procedures and performing a full system restore in a test environment to verify all data is recoverable.

**Acceptance Scenarios**:

1. **Given** the backup schedule is configured, **When** the daily backup runs, **Then** all databases, files, and configurations are successfully backed up
2. **Given** a system failure occurs, **When** I initiate recovery, **Then** the entire system is restored to its last known good state within 4 hours

---

### User Story 3 - Real-time Monitoring & Alerting (Priority: P1)

As an on-call engineer, I need to receive immediate alerts when any system components (NAP-DMS applications, databases, monitoring, Gitea, n8n, RocketChat, and supporting services) fail or performance degrades below acceptable thresholds.

**Why this priority**: Prevents minor issues from becoming major outages and ensures rapid response to system problems.

**Independent Test**: Can be fully tested by simulating various failure scenarios and verifying appropriate alerts are generated and delivered to the correct channels.

**Acceptance Scenarios**:

1. **Given** monitoring is active, **When** a service becomes unresponsive, **Then** an alert is sent within 30 seconds
2. **Given** system resources exceed 80% utilization, **When** the threshold is crossed, **Then** a performance alert is generated with actionable diagnostics

---

### User Story 4 - Container Security Hardening (Priority: P2)

As a security administrator, I need all containers (NAP-DMS applications, databases, monitoring, Gitea, n8n, RocketChat, and supporting services) to run with minimal privileges and no exposed secrets to maintain compliance with security policies.

**Why this priority**: Prevents privilege escalation attacks and protects sensitive configuration data.

**Independent Test**: Can be fully tested by running security scans on all containers and verifying they meet hardening requirements.

**Acceptance Scenarios**:

1. **Given** containers are deployed, **When** I run a security audit, **Then** all containers pass privilege escalation and secret exposure checks
2. **Given** new containers are added, **When** they are deployed, **Then** they automatically inherit security hardening policies

---

### User Story 5 - Infrastructure as Code Management (Priority: P2)

As a DevOps engineer, I need to manage all infrastructure configurations (NAP-DMS applications, databases, monitoring, Gitea, n8n, RocketChat, and supporting services) through version-controlled code files rather than manual server changes.

**Why this priority**: Ensures consistency across environments and enables reproducible infrastructure deployments.

**Independent Test**: Can be fully tested by deploying a complete environment from code and verifying it matches the production configuration.

**Acceptance Scenarios**:

1. **Given** infrastructure code changes, **When** I apply the changes, **Then** the environment configuration matches exactly what's defined in the code
2. **Given** a new environment is needed, **When** I deploy from code, **Then** the environment is created with all required services and configurations

### Edge Cases

- What happens when network connectivity between QNAP and ASUSTOR fails during backup operations?
- How does system handle container registry authentication failures during deployment?
- What happens when Docker Compose files contain syntax errors during environment startup?
- How does system handle SSL certificate expiration for reverse proxy services?
- What happens when monitoring services become unavailable while system is running?
- How does system handle storage space exhaustion on production servers?
- What happens when multiple deployment processes are initiated simultaneously?
- How does system handle database connection pool exhaustion during high load?
- What happens when automated security updates conflict with custom container configurations?
- How does system handle partial backup failures where some services complete but others fail?
- How does system handle Email SMTP service failures for alert notifications?
- What happens when Let's Encrypt certificate renewal fails due to network issues?

## Requirements _(mandatory)_

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### Functional Requirements

- **FR-001**: System MUST support blue-green deployment strategy for zero-downtime updates of all services (NAP-DMS applications, databases, monitoring, Gitea, n8n, RocketChat, and supporting services)
- **FR-002**: System MUST automate daily backups of all services data including databases, application files, configurations, and supporting service data
- **FR-003**: System MUST provide complete disaster recovery capabilities with 4-hour RTO (Recovery Time Objective)
- **FR-004**: System MUST monitor all infrastructure components (all services) and generate alerts for failures or performance degradation
- **FR-005**: System MUST enforce container security hardening including non-root users, privilege dropping, and read-only filesystems for all services
- **FR-006**: System MUST manage all infrastructure configurations through version-controlled Docker Compose files for all services
- **FR-007**: System MUST support automated SSL certificate management and renewal for all web services
- **FR-008**: System MUST provide centralized logging aggregation for all containers and services
- **FR-009**: System MUST implement resource limits and health checks for all containers
- **FR-010**: System MUST support multi-environment deployments (development, staging, production) with consistent configurations
- **FR-011**: System MUST provide automated vulnerability scanning for all container images
- **FR-012**: System MUST support infrastructure secrets management without exposing them in version control
- **FR-013**: System MUST implement backup validation procedures to ensure data integrity
- **FR-014**: System MUST provide rollback capabilities for failed deployments
- **FR-015**: System MUST generate audit trails for all infrastructure changes and deployments

### Key Entities _(include if feature involves data)_

- **Docker Compose Configuration**: Infrastructure as code definitions for all services, environments, and deployments
- **Backup Archive**: Complete system snapshots including databases, files, and configurations with metadata (500GB current data, 20% annual growth)
- **Monitoring Metric**: Performance and health data points collected from all infrastructure components
- **Security Policy**: Container hardening rules and compliance requirements for all deployments
- **Deployment Environment**: Isolated runtime spaces (development, staging, production) with consistent configurations (constrained by existing QNAP/ASUSTOR hardware)
- **Alert Rule**: Threshold-based conditions that trigger notifications when system metrics exceed limits
- **Secret Configuration**: Sensitive information (passwords, keys, certificates) managed outside version control
- **Service Instance**: Running container with specific configuration, resource limits, and health status
- **Infrastructure Change**: Version-controlled modification to system configuration or deployment
- **Recovery Point**: Validated backup state that can be restored for disaster recovery

## Success Criteria _(mandatory)_

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### Measurable Outcomes

- **SC-001**: Deployments complete with zero user-visible downtime in 99.9% of attempts
- **SC-002**: System recovery from backup completes within 4 hours with 100% data integrity
- **SC-003**: Critical system alerts are generated and delivered within 30 seconds of failure detection
- **SC-004**: All containers pass security hardening compliance checks with 100% success rate
- **SC-005**: Infrastructure changes are applied from version-controlled code with 100% consistency across environments
- **SC-006**: SSL certificates are renewed automatically with 0 expiration incidents per year
- **SC-007**: Backup validation procedures achieve 99.9% success rate with automated integrity verification
- **SC-008**: Failed deployments are automatically rolled back within 60 seconds with 100% success rate
- **SC-009**: System uptime exceeds 99.9% monthly availability target
- **SC-010**: Infrastructure audit trail captures 100% of configuration changes and deployments
- **SC-011**: System supports 100 concurrent users with 2-second average response time under normal load
