Configuration Reference

Environment variables and OPA policy examples for the Release Orchestrator.

Status: Planned (not yet implemented) Source: Architecture Advisory Section 15.2 Related Modules: Security Overview, Promotion Manager Sprint: 101_001 Foundation

Overview

This document provides the configuration reference for the Release Orchestrator, including environment variables and OPA policy examples.

Environment Variables

Core Configuration

# Database
STELLA_DATABASE_URL=postgresql://user:pass@host:5432/stella
STELLA_REDIS_URL=redis://host:6379
STELLA_SECRET_KEY=base64-encoded-32-bytes
STELLA_LOG_LEVEL=info
STELLA_LOG_FORMAT=json

Authentication (Authority)

# OAuth/OIDC
STELLA_OAUTH_ISSUER=https://auth.example.com
STELLA_OAUTH_CLIENT_ID=stella-app
STELLA_OAUTH_CLIENT_SECRET=secret

Agents

# Agent TLS
STELLA_AGENT_LISTEN_PORT=8443
STELLA_AGENT_TLS_CERT=/path/to/cert.pem
STELLA_AGENT_TLS_KEY=/path/to/key.pem
STELLA_AGENT_CA_CERT=/path/to/ca.pem

Plugins

# Plugin configuration
STELLA_PLUGIN_DIR=/var/stella/plugins
STELLA_PLUGIN_SANDBOX_MEMORY=512m
STELLA_PLUGIN_SANDBOX_CPU=1

Integrations

# Vault integration
STELLA_VAULT_ADDR=https://vault.example.com
STELLA_VAULT_TOKEN=hvs.xxx

Full Configuration File

# stella-config.yaml

database:
  url: postgresql://user:pass@host:5432/stella
  pool_size: 20
  ssl_mode: require

redis:
  url: redis://host:6379
  prefix: stella

auth:
  issuer: https://auth.example.com
  client_id: stella-app
  client_secret_ref: vault://secrets/oauth-client-secret

agents:
  listen_port: 8443
  tls:
    cert_path: /etc/stella/agent.crt
    key_path: /etc/stella/agent.key
    ca_path: /etc/stella/ca.crt
  heartbeat_interval: 30
  task_timeout: 600

plugins:
  directory: /var/stella/plugins
  sandbox:
    memory: 512m
    cpu: 1
    network: restricted

evidence:
  storage_path: /var/stella/evidence
  signing_key_ref: vault://secrets/evidence-signing-key
  retention_days: 2555  # 7 years

logging:
  level: info
  format: json
  output: stdout

telemetry:
  enabled: true
  otlp_endpoint: otel-collector:4317
  service_name: stella-release-orchestrator

OPA Policy Examples

Security Gate Policy

# security_gate.rego
package stella.gates.security

default allow = false

allow {
    input.release.components[_].security.reachable_critical == 0
    input.release.components[_].security.reachable_high == 0
}

deny[msg] {
    component := input.release.components[_]
    component.security.reachable_critical > 0
    msg := sprintf("Component %s has %d reachable critical vulnerabilities",
                   [component.name, component.security.reachable_critical])
}

Approval Gate Policy

# approval_gate.rego
package stella.gates.approval

default allow = false

allow {
    count(input.approvals) >= input.environment.required_approvals
    separation_of_duties_met
}

separation_of_duties_met {
    not input.environment.require_sod
}

separation_of_duties_met {
    input.environment.require_sod
    approver_ids := {a.approver_id | a := input.approvals[_]; a.action == "approved"}
    not input.promotion.requested_by in approver_ids
}

Freeze Window Gate Policy

# freeze_window_gate.rego
package stella.gates.freeze

default allow = true

allow = false {
    window := input.environment.freeze_windows[_]
    time.now_ns() >= time.parse_rfc3339_ns(window.start)
    time.now_ns() <= time.parse_rfc3339_ns(window.end)
    not input.promotion.requested_by in window.exceptions
}

API Error Codes

Code	HTTP Status	Description
`RELEASE_NOT_FOUND`	404	Release with specified ID does not exist
`ENVIRONMENT_NOT_FOUND`	404	Environment with specified ID does not exist
`PROMOTION_BLOCKED`	403	Promotion blocked by policy gates
`APPROVAL_REQUIRED`	403	Additional approvals required
`FREEZE_WINDOW_ACTIVE`	403	Environment is in freeze window
`DIGEST_MISMATCH`	400	Image digest does not match expected
`AGENT_OFFLINE`	503	Required agent is offline
`WORKFLOW_FAILED`	500	Workflow execution failed
`PLUGIN_ERROR`	500	Plugin returned an error
`QUOTA_EXCEEDED`	429	Digest analysis quota exceeded
`VALIDATION_ERROR`	400	Request validation failed
`UNAUTHORIZED`	401	Authentication required
`FORBIDDEN`	403	Insufficient permissions

Default Values

Setting	Default	Description
Agent heartbeat interval	30s	Frequency of agent heartbeats
Task timeout	600s	Maximum time for agent task
Deployment batch size	25%	Percentage of targets per batch
Health check timeout	60s	Timeout for health checks
Evidence retention	7 years	Audit compliance requirement
Max workflow steps	50	Maximum steps per workflow
Max parallel tasks	10	Per-agent concurrent tasks

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