deploying-fc1-flex-consumption-functionslisted

Deploys standalone Azure Function Apps on Flex Consumption (FC1) for workloads SWA managed functions can't handle — timer triggers, queue triggers, AI workloads, long-running operations. Provisions via ARM REST API or Bicep because az CLI flags silently fall back to deprecated Y1/Dynamic. Includes the forbidden-app-settings list, the ESM-vs-CommonJS module setting, and managed-identity storage authentication. Use when adding a non-HTTP trigger, exceeding the 30s SWA limit, or fixing a Function App that the CLI placed on the wrong plan.
alexpizarro/azure-lean-stack-skills · ★ 1 · DevOps & Infrastructure · score 72

Install: claude install-skill alexpizarro/azure-lean-stack-skills

# Deploying FC1 Flex Consumption Function Apps Use FC1 when SWA managed functions don't fit: timer triggers, queue triggers, AI workloads, or anything that runs longer than 30 seconds. ## Workflow checklist Copy this checklist and tick items off: ``` FC1 Flex Consumption provisioning: - [ ] Step 1: Confirm SP has User Access Administrator at the RG scope (needed for MI role assignments) - [ ] Step 2: Deploy storage account with the deployment container (storage-for-fc1.bicep) - [ ] Step 3: Deploy FC1 plan + Function App via Bicep (NEVER az CLI — it silently mis-creates the plan) - [ ] Step 4: Verify properties.sku == "FlexConsumption" with az functionapp show - [ ] Step 5: Confirm FUNCTIONS_WORKER_RUNTIME is NOT in app settings - [ ] Step 6: Confirm package.json has "main": "dist/index.js" + "type": "module" (FC1 = ESM) - [ ] Step 7: Confirm src/index.ts imports every function file with .js extensions - [ ] Step 8: Deploy code via Azure/functions-action@v1.5.2+; check log for "Detected function app sku: FlexConsumption" - [ ] Step 9: Wait up to 10 min for MI role assignment propagation if first call fails ``` ## Why this is hard Azure Flex Consumption (FC1) looks similar to deprecated Linux Consumption (Y1) in the portal but behaves completely differently: | | Linux Consumption (Y1) | Flex Consumption (FC1) | |---|---|---| | Status | **Deprecated** | Current, recommended | | Deployment | `WEBSITE_RUN_FROM_PACKAGE` | **One Deploy** (blob-based) | | `FUNCTIONS_WORKER_RUN