TELEICU/Canary rollout: Difference between revisions

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