Core System Architecture Part 105 — Anonymous Network Configuration Drift, Desired State, Change Reconciliation, Policy Convergence & Privacy-Preserving Infrastructure State Governance Architecture
SIAR — Secure, Local-First, Multi-Transport Communication Platform
Series: Core System Architecture
Part: 105
Status: Architecture specification
Primary language: Rust
Builds on: Core System Architecture Parts 36, 52, 61–65, 71–74, 79–81, 94–104
Primary purpose: define SIAR's infrastructure-state governance architecture for desired state, immutable configuration snapshots, configuration drift detection, reconciliation, policy convergence, anti-rollback, exception handling, change safety, service/tenant/region scope, Git/RON sources of truth, recovery, audit, compliance, and privacy-preserving infrastructure observability.
1. Purpose
Configuration drift is the difference between:
what infrastructure should be
and:
what infrastructure actually is
Drift can come from:
manual edits
failed deployments
emergency changes
stale replicas
partial rollouts
provider mutation
configuration bugs
compromised hosts
The governing principle is:
SIAR infrastructure should converge toward explicit, signed, versioned desired state through bounded reconciliation loops, while treating unknown or conflicting state as a security condition rather than silently normalizing it.
2. Architectural Position
Human-Reviewed Desired State
│
▼
Signed State Bundle
│
▼
Runtime Distribution
│
▼
State Observers
│
▼
Drift Detector
│
┌─────┼─────┐
│ │ │
MATCH DRIFT UNKNOWN
│ │ │
└─────┼─────┘
▼
Reconciliation Engine
│
▼
Verified Convergence
3. Core Separation
Keep distinct:
desired state
observed state
effective state
drift
exception
reconciliation
policy
deployment
4. Non-Goals
Part 105 does not create:
arbitrary remote shell orchestration
continuous employee monitoring
configuration-by-dashboard click history
global mutable configuration
automatic normalization of unknown state
5. Desired State
Desired state is the approved target.
6. Desired State Object
#![allow(unused)] fn main() { pub struct DesiredState { pub state_id: DesiredStateId, pub scope: StateScope, pub version: StateVersion, pub config_digest: Digest, pub policy_digest: Digest, pub valid_from: Timestamp, } }
7. Desired State ID
Opaque/content-addressed.
8. State Version
Monotonic per scope.
9. Hard Rule
Desired state is immutable once published.
10. State Scope
#![allow(unused)] fn main() { pub enum StateScope { Service(ServiceId), HostClass(HostClass), Region(RegionId), Tenant(TenantId), Environment(EnvironmentClass), FederationGateway(FederationDomainId), GovernanceDomain(GovernanceDomainId), } }
11. No Global User Scope
Hard rule.
12. Desired State Sources
Preferred sources:
Git-reviewed files
signed RON configuration
release manifests
compiled policy
deployment manifests
13. RON
Human-readable configuration source.
14. Postcard
Compiled/runtime internal state.
15. JSON
External interop only when required.
16. Hard Rule
No unsigned mutable database row is the sole authority for critical infrastructure state.
17. Git as Human Review Source
Git may hold:
config source
policy source
environment overlays
ownership metadata
18. Git Commit Is Not Runtime Authority By Itself
Hard rule.
19. Promotion Pipeline
Git change
→ review
→ validation
→ compile
→ sign
→ publish desired-state bundle
20. Hard Rule
Runtime consumes signed state bundle, not arbitrary branch head.
21. Desired State Bundle
#![allow(unused)] fn main() { pub struct DesiredStateBundle { pub scope: StateScope, pub state: DesiredState, pub config: CompiledConfig, pub policy: CompiledPolicyRef, pub signatures: SignatureBundle, } }
22. Canonical Encoding
Postcard canonical bytes.
23. No ambiguous JSON signing.
24. Hard rule.
25. Observed State
Observed state describes runtime reality.
26. Observed State Object
#![allow(unused)] fn main() { pub struct ObservedState { pub scope: StateScope, pub observed_version: Option<StateVersion>, pub config_digest: Option<Digest>, pub policy_digest: Option<Digest>, pub artifact_digest: Option<ArtifactDigest>, pub observed_at: CoarseTimestamp, } }
27. Observed State May Be Partial
Hard truth.
28. Unknown Fields
Represent explicitly.
29. No defaulting unknown to match.
30. Hard rule.
31. State Observer
#![allow(unused)] fn main() { pub trait StateObserver { fn observe( &self, scope: StateScope, ) -> Result<ObservedState, StateGovernanceError>; } }
32. Observer Permissions
Minimal.
33. No broad host filesystem scan unless control explicitly requires.
34. Hard rule.
35. Observed State Inputs
Examples:
runtime config digest
artifact digest
service version
policy version
region binding
certificate profile
36. Do Not Observe
user content
employee activity
private messages
search queries
37. Hard rule.
38. Effective State
Actual state after overlays/policy.
39. EffectiveState
#![allow(unused)] fn main() { pub struct EffectiveState { pub scope: StateScope, pub config_digest: Digest, pub policy_digest: Digest, pub runtime_flags: BTreeMap<FeatureId, FeatureDecision>, } }
40. Effective State Is Derived
Not independently editable.
41. Hard rule.
42. Drift
Drift = mismatch between desired and observed/effective state.
43. Drift Type
#![allow(unused)] fn main() { pub enum DriftType { ConfigMismatch, PolicyMismatch, ArtifactMismatch, MissingState, UnexpectedState, StaleVersion, UnauthorizedMutation, } }
44. Drift Severity
#![allow(unused)] fn main() { pub enum DriftSeverity { Informational, Low, Medium, High, Critical, } }
45. Critical Drift Examples
privacy floor disabled
wrong release artifact
unknown root trust
tenant isolation policy missing
unsigned config active
46. Hard Rule
Critical drift cannot be hidden by "mostly healthy" status.
47. Drift Record
#![allow(unused)] fn main() { pub struct DriftRecord { pub drift_id: DriftId, pub scope: StateScope, pub drift_type: DriftType, pub severity: DriftSeverity, pub desired: DesiredStateId, pub observed_digest: Option<Digest>, } }
48. Drift State
#![allow(unused)] fn main() { pub enum DriftState { Detected, Confirmed, Reconciling, ExceptionApproved, Resolved, Failed, } }
49. Unknown Is Not Resolved
Hard rule.
50. Drift Detection
#![allow(unused)] fn main() { pub trait DriftDetector { fn compare( &self, desired: &DesiredState, observed: &ObservedState, ) -> Result<Option<DriftRecord>, StateGovernanceError>; } }
51. Deterministic.
52. No opaque ML drift classification.
53. Hard rule.
54. Drift Detection Frequency
Event-driven + periodic.
55. Triggers:
deployment
config publish
policy change
host restart
certificate renewal
provider event
56. Periodic sweep
Safety net.
57. Hard rule.
58. Drift Detection Does Not Require User Telemetry
Hard rule.
59. Reconciliation
Reconciliation moves runtime toward desired state.
60. Reconciliation Plan
#![allow(unused)] fn main() { pub struct ReconciliationPlan { pub drift: DriftId, pub scope: StateScope, pub steps: Vec<ReconciliationStep>, pub rollback: Option<RollbackPlanRef>, } }
61. Reconciliation Step
#![allow(unused)] fn main() { pub enum ReconciliationStep { ApplyConfig, ReloadPolicy, RedeployArtifact, RestartWorkload, RotateCredential, RebindRegion, Quarantine, } }
62. No Generic Shell Step
Hard rule.
63. Reconciliation State
#![allow(unused)] fn main() { pub enum ReconciliationState { Planned, Approved, Running, Verifying, Completed, RolledBack, Failed, } }
64. No Completed Before Verification
Hard rule.
65. Reconciliation Controller
#![allow(unused)] fn main() { pub trait ReconciliationController { fn reconcile( &self, plan: ReconciliationPlan, ) -> Result<ReconciliationReceipt, StateGovernanceError>; } }
66. Idempotent where possible.
67. Hard rule.
68. Desired State Convergence
System should converge monotonically toward approved target.
69. Convergence Does Not Mean
overwrite everything until equal
70. It Means
apply authorized transitions
verify results
respect safety gates
71. Hard rule.
72. Reconciliation Loop
observe
→ compare
→ plan
→ authorize
→ apply
→ verify
→ repeat if needed
73. Bounded.
74. No infinite tight loop.
75. Hard rule.
76. Reconciliation Backoff
#![allow(unused)] fn main() { pub struct ReconciliationRetryPolicy { pub max_attempts: u8, pub max_elapsed: Duration, pub backoff: BackoffPolicy, } }
77. Avoid thrashing.
78. Hard rule.
79. Drift Flapping
State alternates.
80. Detection:
same drift reappears repeatedly
81. Response:
pause auto-reconciliation
escalate
investigate source
82. Hard rule.
83. Change Authority Integration
Part 104.
84. Reconciliation can execute automatically only if pre-authorized by policy.
85. High-risk drift requires approval.
86. Hard rule.
87. Reconciliation Policy
#![allow(unused)] fn main() { pub enum ReconciliationPolicy { AutomaticSafe, AutomaticWithGuardrails, ApprovalRequired, ManualOnly, } }
88. AutomaticSafe
Examples:
restore missing low-risk config
restart failed sidecar
89. AutomaticWithGuardrails
Needs health checks.
90. ApprovalRequired
High-risk production changes.
91. ManualOnly
Root/governance operations.
92. Hard rule.
93. Desired State Precedence
Multiple layers may exist.
94. Example:
hard invariants
governance baseline
environment config
service config
tenant managed restriction
95. Precedence
hard invariant
> governance/security baseline
> environment
> service
> tenant restriction
> optimization
96. More restrictive rule wins for security/privacy.
97. Hard rule.
98. Overlay Model
#![allow(unused)] fn main() { pub struct StateOverlay { pub scope: StateScope, pub overlay_type: OverlayType, pub config_digest: Digest, } }
99. Overlay Type
#![allow(unused)] fn main() { pub enum OverlayType { Environment, Region, Service, Tenant, } }
100. No Arbitrary Hidden Overlay
Hard rule.
101. Overlay Composition
Deterministic.
102. No runtime order ambiguity.
103. Hard rule.
104. Policy Convergence
Not only config files.
105. Policy convergence means:
all relevant services enforce current approved policy version
106. Policy Drift
Example:
service still enforcing old auth policy
107. High severity depending policy.
108. Hard rule.
109. Policy Version
#![allow(unused)] fn main() { pub struct PolicyVersion(pub u64); }
110. Anti-Rollback
Monotonic security/privacy policy floor.
111. Old permissive policy rejected.
112. Hard rule.
113. Configuration Security Epoch
#![allow(unused)] fn main() { pub struct ConfigurationSecurityEpoch(pub u64); }
114. Increment when critical configuration floor changes.
115. Runtime stores highest accepted epoch.
116. Hard rule.
117. Freeze Attack
Attacker serves old valid config.
118. Prevent with:
expiry
security epoch
signed state version
119. Hard rule.
120. Config Expiration
Critical signed bundles may have validity windows.
121. Expired bundle triggers degraded/fail-safe behavior.
122. No silent infinite use.
123. Hard rule.
124. Last Known Good State
Important.
125. Store last verified bundle.
126. Can be used if current distribution unavailable and still valid.
127. No rollback below security floor.
128. Hard rule.
129. Emergency Configuration
Break-glass.
130. Time-bounded.
131. Scope-bounded.
132. Signed.
133. Hard rule.
134. Emergency Config State
#![allow(unused)] fn main() { pub struct EmergencyStateOverride { pub scope: StateScope, pub override_digest: Digest, pub expires_at: Timestamp, pub reason: EmergencyReasonCode, } }
135. Cannot Disable Hard Invariants
Hard rule.
136. Emergency Override Expiry
Automatic.
137. Reconciliation back to normal desired state.
138. Hard rule.
139. Drift Exception
Temporary accepted drift.
140. Drift Exception Record
#![allow(unused)] fn main() { pub struct DriftException { pub drift: DriftId, pub scope: StateScope, pub reason: DriftExceptionReason, pub expires_at: Timestamp, pub approvals: ApprovalBundle, } }
141. Exception ≠ Resolved
Hard rule.
142. No Permanent Drift Exception
Preferred hard rule.
143. Exception Expiry
Drift becomes active again.
144. Hard rule.
145. Exception Scope
Narrow.
146. Cannot apply tenant-wide unless explicitly approved.
147. Hard rule.
148. Change Reconciliation
New change may partially apply.
149. Example:
8/10 nodes updated
2 stale
150. Reconciliation discovers partial state.
151. Hard rule.
152. Rollout State
#![allow(unused)] fn main() { pub enum ConvergenceState { NotStarted, InProgress, PartiallyConverged, Converged, Degraded, Failed, } }
153. No "success" until required scope converged.
154. Hard rule.
155. Convergence Quorum
Some systems require all nodes.
156. Some tolerate percentage.
157. Explicit policy.
158. Convergence Requirement
#![allow(unused)] fn main() { pub enum ConvergenceRequirement { All, Percentage(u16), Quorum(u16), } }
159. Security-critical policy
prefer All or quorum with explicit rationale.
160. Hard rule.
161. Config Distribution
Push hint + pull signed bundle.
162. No untrusted push payload as state authority.
163. Hard rule.
164. Distribution Channels
control plane
object store
offline bundle
managed mirror
165. All untrusted for authenticity.
166. Signature verification mandatory.
167. Hard rule.
168. Offline / Air-Gapped
Use signed desired-state bundle.
169. Anti-rollback still applies.
170. Hard rule.
171. Host State Governance
Host class desired state includes:
base image
kernel settings
service units
attestation baseline
172. Avoid mutable snowflake hosts.
173. Hard rule.
174. Host Drift
Examples:
unexpected package
changed sysctl
modified service unit
175. Response:
quarantine/rebuild
for security-critical drift.
176. Hard rule.
177. Rebuild Over Repair
Preferred after unknown host drift.
178. Part 71 integration.
179. Hard rule.
180. Workload State Governance
Desired state includes:
artifact digest
replica count
resource limits
network policy
secret references
181. No runtime secret value in desired state.
182. Hard rule.
183. Kubernetes-Like Concepts
Can be used conceptually.
184. But core model remains provider-neutral.
185. Hard rule.
186. Container Desired State
Image by digest.
187. Never mutable tag only.
188. Hard rule.
189. VM Desired State
Image digest/version.
190. No manual drift via SSH baseline.
191. Hard rule.
192. Bare-Metal Desired State
Provisioning manifest.
193. Reinstall/rebuild preferred if unknown.
194. Hard rule.
195. Service Configuration
Typed config struct.
196. Example:
#![allow(unused)] fn main() { pub struct ServiceConfig { pub service: ServiceId, pub bind: BindPolicy, pub limits: ResourceLimits, pub privacy: PrivacyPolicyRef, pub authz: AuthorizationPolicyRef, } }
197. No stringly typed map for critical config.
198. Hard rule.
199. Configuration Validation
Before publish.
200. Checks:
schema
cross-field invariants
security floor
privacy floor
resource bounds
region constraints
201. No invalid bundle reaches signing.
202. Hard rule.
203. Static Validation
Compile-time/CI where possible.
204. Dynamic Validation
Staging/canary.
205. Hard rule.
206. Configuration Compiler
#![allow(unused)] fn main() { pub trait ConfigurationCompiler { fn compile( &self, source: &HumanConfigSource, ) -> Result<CompiledConfig, StateGovernanceError>; } }
207. Deterministic.
208. Reproducible.
209. Hard rule.
210. Configuration Hash
Used for observation/comparison.
211. Normalize before hash.
212. No semantically irrelevant ordering differences.
213. Hard rule.
214. Secret References
Desired state stores:
SecretRef
not:
secret value
215. Part 80.
216. Hard rule.
217. Certificate State
Desired policy includes:
issuer profile
TTL
SAN/service identity
218. Not private key.
219. Hard rule.
220. Database Schema State
Part 74.
221. Desired schema version.
222. Drift includes:
missing migration
unexpected column
old schema
223. No destructive auto-reconcile without migration plan.
224. Hard rule.
225. Queue/Event State
Part 75.
226. Desired topology:
topic/stream schema
consumer groups
retention
227. No blind deletion of unknown queue.
228. Hard rule.
229. Consensus State
Part 76.
230. Desired voter set is high-risk.
231. Reconciliation uses joint consensus, not direct config overwrite.
232. Hard rule.
233. Service Discovery State
Part 77.
234. Desired service endpoints from healthy workloads.
235. Stale endpoint drift removed after validation.
236. Hard rule.
237. Edge/Gateway State
Part 78.
238. Desired ingress policies signed.
239. Unknown WAF/gateway rules are drift.
240. Hard rule.
241. East-West Policy State
Part 79.
242. Desired mTLS/service authz policy.
243. Plaintext path drift critical.
244. Hard rule.
245. Secrets/CA State
Part 80.
246. Desired profiles/issuers/TTLs.
247. No static credential substitution drift.
248. Hard rule.
249. Authorization Policy State
Part 81.
250. Old permissive policy drift critical.
251. Hard rule.
252. Tenant State Governance
Tenant managed policy/settings can have desired state.
253. Scope strictly tenant.
254. Personal user settings are not infrastructure drift.
255. Hard rule.
256. Federation Gateway State
Desired peer trust/capabilities.
257. Remote user/member data excluded.
258. Hard rule.
259. Regional State
Part 103.
260. Desired placement/region constraints.
261. Workload outside allowed region = drift.
262. Hard rule.
263. Capacity State
Part 101.
264. Capacity policy desired state.
265. But resource utilization itself is not drift.
266. Hard rule.
267. FinOps State
Part 102.
268. Budget policy desired state.
269. Spend itself is runtime measurement, not config drift.
270. Hard rule.
271. Organizational Governance State
Part 104.
272. Ownership/approval policy can be desired state.
273. Workforce behavior not included.
274. Hard rule.
275. Drift Detection Privacy
Observers collect minimum state.
276. No telemetry expansion merely for configuration comparison.
277. Hard rule.
278. State Attestation
For high-value workloads.
279. Combine:
artifact digest
config digest
policy digest
boot measurement
280. Signed/attested.
281. Good.
282. No user identity.
283. Hard rule.
284. Desired-State Attestation
#![allow(unused)] fn main() { pub struct DesiredStateAttestation { pub scope: StateScope, pub desired_state: DesiredStateId, pub observed_digest: Digest, pub attestation: AttestationEvidence, } }
285. Useful for compliance/admission.
286. Hard rule.
287. Admission Control
Part 95/101.
288. Workload can be admitted only if critical state converged.
289. Unknown state may quarantine.
290. Hard rule.
291. State Drift Severity Policy
#![allow(unused)] fn main() { pub struct DriftPolicy { pub drift_type: DriftType, pub severity: DriftSeverity, pub reconciliation: ReconciliationPolicy, } }
292. Versioned/signed.
293. Hard rule.
294. Critical Drift Response
May:
quarantine
stop rollout
open incident
block admission
295. No silent auto-ignore.
296. Hard rule.
297. Medium/Low Drift
May auto-reconcile.
298. Still audited at aggregate/high-level.
299. Good.
300. Drift Ownership
Every drift routes to service owner.
301. Part 104 integration.
302. No personal blame record.
303. Hard rule.
304. Drift Escalation
If unresolved beyond SLA.
305. Escalate by severity/scope.
306. No employee ranking.
307. Hard rule.
308. Drift SLA
#![allow(unused)] fn main() { pub struct DriftSla { pub severity: DriftSeverity, pub max_resolution_time: Duration, } }
309. Configurable.
310. Hard rule.
311. Change Freeze
Drift auto-reconciliation may be limited during freeze.
312. Security-critical drift can override with policy.
313. Hard rule.
314. Drift During Incident
Part 96.
315. Unknown change may be evidence of compromise.
316. Auto-reconcile may destroy forensic evidence.
317. Therefore:
incident mode can freeze reconciliation
318. Hard rule.
319. Incident Reconciliation Mode
#![allow(unused)] fn main() { pub enum IncidentReconciliationMode { Normal, FreezeAffectedScope, QuarantineOnly, ManualApproval, } }
320. Preserves evidence.
321. Hard rule.
322. Audit Integration
Part 94.
323. Audit:
desired-state publish
high-risk reconciliation
drift exception
emergency override
324. Not every observer poll.
325. Hard rule.
326. Compliance Integration
Part 95.
327. Controls:
critical state converged
no stale config
no unauthorized mutation
exception expiry
328. Unknown ≠ compliant.
329. Hard rule.
330. SOC Integration
Part 97.
331. Unexpected artifact/config drift can be security signal.
332. No duplicate raw data feed.
333. Hard rule.
334. Vulnerability Integration
Part 98.
335. Desired artifact may change due patch.
336. Old vulnerable artifact = drift after policy update.
337. Hard rule.
338. Update Integration
Part 99.
339. Release metadata and desired deployment state linked.
340. No update considered complete until convergence verified.
341. Hard rule.
342. DR Integration
Part 100.
343. Restored environment must reconcile to current desired state.
344. Old backup config cannot remain active.
345. Hard rule.
346. Capacity Integration
Part 101.
347. Autoscaler creates instances from approved desired state.
348. Scale-out cannot introduce drift.
349. Hard rule.
350. FinOps Integration
Part 102.
351. Cost optimizer can propose config change.
352. It cannot mutate desired state directly.
353. Hard rule.
354. Geographic Governance Integration
Part 103.
355. Region placement is desired state.
356. Forbidden region workload = critical drift.
357. Hard rule.
358. Organizational Governance Integration
Part 104.
359. Ownership and change authority define who may approve reconciliation.
360. Hard rule.
361. Configuration Governance API
#![allow(unused)] fn main() { pub trait DesiredStateService { fn desired( &self, scope: StateScope, ) -> Result<DesiredStateBundle, StateGovernanceError>; fn publish( &self, bundle: DesiredStateBundle, ) -> Result<(), StateGovernanceError>; } }
362. Drift Query API
#![allow(unused)] fn main() { pub trait DriftQueryService { fn drift( &self, scope: StateScope, ) -> Result<Vec<DriftRecord>, StateGovernanceError>; } }
363. Reconciliation API
#![allow(unused)] fn main() { pub trait ReconciliationService { fn plan( &self, drift: DriftId, ) -> Result<ReconciliationPlan, StateGovernanceError>; fn execute( &self, plan: ReconciliationPlan, ) -> Result<ReconciliationReceipt, StateGovernanceError>; } }
364. No Generic Remote Exec API
Hard rule.
365. Reconciliation Receipt
#![allow(unused)] fn main() { pub struct ReconciliationReceipt { pub drift: DriftId, pub result: ReconciliationResult, pub verification_digest: Digest, } }
366. Result
#![allow(unused)] fn main() { pub enum ReconciliationResult { Converged, RolledBack, Failed, } }
367. No Converged Before Verify
Hard rule.
368. Error Taxonomy
#![allow(unused)] fn main() { pub enum StateGovernanceError { DesiredStateMissing, SignatureInvalid, StateVersionRollback, SecurityEpochRollback, DriftDetected, ReconciliationDenied, ReconciliationFailed, ExceptionExpired, ScopeMismatch, ObserverUnavailable, UnknownState, Unauthorized, Internal, } }
369. Observability
Safe metrics:
drift count by severity
time to convergence
reconciliation failures
stale state count
exception count
370. Forbidden:
employee activity
user behavior
private content
371. Hard rule.
372. State Governance SLOs
Examples:
critical drift detection latency
critical convergence latency
desired-state distribution freshness
observer health
373. Security SLO
0 unsigned desired state accepted
0 rollback below security epoch
0 critical drift silently ignored
374. Privacy SLO
0 user-content inspection for drift
0 workforce behavioral surveillance
0 config-governance data repurposed as analytics
375. Failure Modes
state distribution outage
observer outage
reconciliation loop failure
conflicting desired states
stale emergency override
376. Distribution Outage
Use last valid signed desired state within validity.
377. No fallback to unsigned local edits.
378. Hard rule.
379. Observer Outage
State becomes Unknown.
380. Unknown critical state may fail admission.
381. Hard rule.
382. Reconciliation Loop Failure
Stop after budget.
383. Escalate.
384. No infinite mutation loop.
385. Hard rule.
386. Conflicting Desired States
Compile/intersection fails.
387. No arbitrary winner.
388. Hard rule.
389. Stale Emergency Override
Auto-expire.
390. Reconcile to normal.
391. Hard rule.
392. Testing
Need configuration-governance testkit.
393. Test Scenarios
manual host drift
old policy rollback
partial rollout
emergency override expiry
incident freeze
394. Signature Test
Unsigned bundle rejected.
395. State Version Test
Older version rejected.
396. Security Epoch Test
Old permissive config rejected.
397. Drift Detection Test
Mismatch creates correct DriftType.
398. Unknown Test
Missing observer state != Match.
399. Auto-Reconcile Test
Safe drift converges.
400. High-Risk Test
Requires approval.
401. Exception Test
Exception remains visible as drift exception.
402. Expiry Test
Expired exception reactivates drift.
403. Partial Convergence Test
Does not report complete.
404. Incident Freeze Test
Forensic scope not auto-mutated.
405. Tenant Test
Tenant config cannot alter platform hard invariant.
406. Region Test
Forbidden region workload detected.
407. Update Test
Old artifact becomes drift after security release.
408. DR Test
Restored old config reconciles to current state.
409. Capacity Test
Autoscaled node starts only from approved state.
410. Privacy Test
No user content required.
411. Fuzzing
Fuzz:
desired-state bundle
overlay composition
drift record
reconciliation plan
emergency override
412. Property Tests
Properties:
lower security epoch can never become active
critical unknown state can never be reported converged
exception expiry can never leave drift permanently suppressed
automatic reconciliation can never execute an action outside its policy class
413. Formal Verification Targets
Strong candidates:
desired-state version monotonicity
overlay precedence
drift/reconciliation state machine
emergency override expiry
414. Kani Candidate
policy/state precedence and rollback invariants.
415. TLA+ Candidate
publish desired state → distribute → observe drift → reconcile → verify convergence.
416. Loom Candidate
concurrent desired-state update + observer poll + reconciliation execution.
417. Performance
State comparison should be cheap.
418. Compare digests/versions first.
419. Deep inspection only on mismatch.
420. Hard rule.
421. Distribution Scale
Signed bundles cacheable.
422. No central per-request configuration lookup.
423. Hard rule.
424. Reconciliation Concurrency
Bounded.
425. Avoid fleet-wide restart storms.
426. Hard rule.
427. Staggered Convergence
For large fleets:
canary
small batch
broad
428. Same pattern as release rollout.
429. Hard rule.
430. Storage
Separate stores:
desired-state bundles
observed-state digests
drift records
exceptions
reconciliation receipts
431. No config clickstream.
432. Hard rule.
433. Partitioning
By:
service
host class
region
tenant
environment
federation domain
434. No user partition.
435. Hard rule.
436. Crate Layout
Recommended:
crates/
├── siar-state-governance-core/
├── siar-desired-state/
├── siar-config-compiler/
├── siar-state-observer/
├── siar-drift-detector/
├── siar-reconciliation/
├── siar-state-overlay/
├── siar-config-security-epoch/
├── siar-state-exception/
├── siar-state-attestation/
├── siar-state-governance-observability/
└── siar-state-governance-testkit/
437. siar-state-governance-core
Owns:
StateScope
StateVersion
DriftType
DriftSeverity
errors
438. siar-desired-state
Signed immutable state bundles.
439. siar-config-compiler
RON/source config → typed compiled config.
440. siar-state-observer
Minimal runtime state observation.
441. siar-drift-detector
Desired vs observed comparison.
442. siar-reconciliation
Typed reconcile plans/actions/verification.
443. siar-state-overlay
Deterministic environment/region/service/tenant overlays.
444. siar-config-security-epoch
Anti-rollback configuration floor.
445. siar-state-exception
Temporary drift exceptions/emergency overrides.
446. siar-state-attestation
High-assurance state proofs.
447. siar-state-governance-observability
Aggregate convergence health only.
448. siar-state-governance-testkit
drift/rollback/reconcile/privacy tests.
449. Security, Privacy & Correctness Invariants
Mandatory:
1. Desired state is immutable, signed, versioned, scope-bound, and distributed as canonical runtime bundles; mutable dashboards/databases cannot independently become critical configuration authority.
2. Observed state is explicitly partial and unknown values can never be silently interpreted as matching desired state.
3. Critical security, privacy, authorization, residency, artifact, and trust drift is surfaced explicitly and cannot be hidden by aggregate health scores.
4. Reconciliation executes typed, pre-authorized actions only; arbitrary remote shell execution is not part of the state-governance model.
5. Configuration and policy security epochs are anti-rollback; stale but valid bundles below the accepted floor cannot become active.
6. Emergency overrides and drift exceptions are narrow, signed/approved, time-bounded, auditable, and automatically expire back toward normal desired state.
7. Reconciliation completion requires post-change verification; command success or process exit alone can never prove convergence.
8. Tenant, service, region, federation, and governance desired state remain scope-isolated; tenant overlays cannot weaken platform hard security/privacy invariants.
9. Incident mode can freeze or restrict automatic reconciliation when mutation would destroy forensic evidence or worsen containment.
10. Drift observers collect infrastructure/configuration evidence only and cannot be repurposed to inspect user content, workforce behavior, or private communications.
11. Restored, autoscaled, newly deployed, or migrated workloads must reconcile to current desired state before being considered trusted or fully admitted.
12. Configuration governance integrates with deployment, audit, compliance, SOC, incident response, DR, capacity, FinOps, geographic governance, and organizational authority without creating a universal mutable control plane or surveillance system.
450. Initial Production Scope
Implement first:
typed StateScope/StateVersion
signed immutable desired-state bundles
RON source + Postcard compiled state
configuration security epoch
state observer for config/policy/artifact digests
drift detector
critical drift classification
typed reconciliation plans
automatic-safe vs approval-required reconciliation
overlay composition
last-known-good state
emergency override expiry
drift exceptions
partial convergence state
incident freeze mode
audit/compliance integration
state attestation hooks
privacy-safe convergence metrics
configuration-governance testkit
Then add:
provider-native drift adapters
fleet-scale staged reconciliation
formal overlay/preference verification
cross-region desired-state federation
advanced state-attestation proofs
automated drift root-cause analysis using infrastructure-only signals
451. Definition of Done
Part 105 is complete when:
- desired state is immutable, signed, and versioned
- runtime never trusts arbitrary branch/database state directly
- observed state can represent Unknown
- drift types/severity are explicit
- security/privacy policy rollback is blocked
- safe drift can auto-reconcile
- high-risk drift requires authority
- emergency overrides and exceptions expire
- partial convergence is not reported as complete
- incident scopes can freeze automatic mutation
- restored/autoscaled workloads reconcile before trust
- tenant overlays cannot weaken hard platform invariants
- observers collect no user/workforce surveillance data
- drift/reconciliation/rollback/privacy/fuzz/formal tests are specified
452. Final Architecture
HUMAN-REVIEWED SOURCE
│
▼
CONFIG COMPILATION
│
▼
SIGNED DESIRED STATE
│
▼
STATE DISTRIBUTION
│
▼
RUNTIME OBSERVATION
│
▼
DRIFT DETECTION
│
┌──────────┼──────────┐
│ │ │
MATCH DRIFT UNKNOWN
│ │ │
└──────────┼──────────┘
▼
RECONCILIATION
│
▼
VERIFICATION
│
▼
CONVERGENCE
State-governance safety model:
immutable desired state
+
signed/versioned bundles
+
minimal observers
+
explicit drift
+
typed reconciliation
+
anti-rollback epochs
+
expiring exceptions
+
verified convergence
not:
let operators edit production by hand, assume all nodes match, and use a dashboard's last-known values as truth
453. Final Principle
Infrastructure should continuously converge toward reviewed, signed, explicit state—without granting the control plane unlimited authority over people or private data.
The correct model is:
define desired state
+
compile deterministically
+
sign and version
+
observe minimally
+
detect drift explicitly
+
reconcile with bounded authority
+
verify convergence
+
never treat surveillance as infrastructure state
This architecture gives SIAR a privacy-preserving infrastructure-state foundation for desired-state management, drift detection, reconciliation, policy convergence, emergency exceptions, anti-rollback configuration, host/service/tenant governance, and recovery convergence while preserving the anonymity, local-first, least-authority, and anti-surveillance guarantees established across Parts 34–104.