TELEICU/Canary rollout: Difference between revisions

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Latest revision as of 08:52, 6 July 2026

flowteleicuCARE 3.0+

Both migration paths use the same staged rollout process to minimize fleet-wide risk.

Stages

Gating criteria

A stage must pass all checks before promoting to the next:

All nodes report healthy to K3s control plane
VictoriaMetrics shows no anomaly in key metrics
Downtime classifier reports expected status (no false positives)
Hub admin confirms no degradation in clinical workflow
Rollback tested and confirmed working

Per-path

Ansible path

NixOS path

@@ Line 10: / Line 10: @@
 == Stages ==
+{{#mermaid:flowchart LR
-# '''Staging''' — a small set of test VMs or spare hardware that mirrors production. Every change lands here first.
+    STAGING["Staging<br/>(test VMs/hardware)"]
-# '''Canary (1–2 sites)''' — real hospital PCs, selected from sites with tolerant operations. Changes soak here for a validation period.
+    CANARY["Canary<br/>(1-2 real sites)"]
-# '''Regional rollout''' — one state or hub region at a time, with a gating check after each region.
+    REGIONAL["Regional Rollout<br/>(one state at a time)"]
-# '''Fleet-wide''' — remaining sites after all regions have passed.
+    FLEET["Fleet-wide<br/>(remaining sites)"]
+    STAGING -->|"validate →"| CANARY
+    CANARY -->|"gate →"| REGIONAL
+    REGIONAL -->|"gate →"| FLEET
+}}
 == Gating criteria ==
@@ Line 29: / Line 35: @@
 === Ansible path ===
+{{#mermaid:flowchart LR
-# Push change to ansible repo <code>staging</code> branch → staging nodes converge on next pull
+    STAGING["staging branch"]
-# Merge to <code>canary</code> branch → canary nodes pull and apply
+    CANARY["canary branch"]
-# Merge to <code>regional/&lt;state&gt;</code> branch → that state's nodes converge
+    REGIONAL["regional/&lt;state&gt; branch"]
-# Merge to <code>main</code> → fleet-wide rollout
+    MAIN["main branch"]
+    STAGING -->|"merge"| CANARY
+    CANARY -->|"merge"| REGIONAL
+    REGIONAL -->|"merge"| MAIN
+}}
 === NixOS path ===
+{{#mermaid:flowchart LR
-# Update flake → rebuild in staging
+    STAGING["Update flake → rebuild in staging"]
-# For canary: <code>deploy-rs .#canary-node</code> (push) or merge to canary branch for comin
+    CANARY["deploy-rs .#canary-node<br/>or merge to canary branch"]
-# For regional: tag a release → comin picks up the tag
+    REGIONAL["Tag release → comin picks up tag"]
-# For fleet: update <code>main</code> branch of flake → all comin agents pull new generation
+    FLEET["Merge to main → comin pulls"]
+    STAGING -->|"validate →"| CANARY
-== Branch/tag structure ==
+    CANARY -->|"gate →"| REGIONAL
+    REGIONAL -->|"gate →"| FLEET
+}}
+{{Navbox TELEICU}}
-syntaxhighlight lang="text"
-main ────────────── fleet-wide
-  ├── regional/kerala
-  ├── regional/maharashtra
-  ├── …
-  └── canary
-       └── staging
-syntaxhighlight
 {{Related}}