fix: share adu instance

.github/workflows/cd.yaml

@@ -86,6 +86,7 @@ jobs:
             --template-file azuredeploy.json \
             --parameters \
               appName=${APP_NAME:-nrfassettracker} \
+              aduInstanceName=${ADU_INSTANCE_NAME:-nRFAssetTrackerADU} \
               location=$LOCATION \
               appRegistrationClientId=$APP_REG_CLIENT_ID \
               b2cTenant=${B2C_TENANT} \

.github/workflows/test-and-release.yaml

@@ -77,6 +77,7 @@ jobs:
               --template-file azuredeploy.json \
               --parameters \
                 appName=${APP_NAME:-nrfassettrackerci} \
+                aduInstanceName=${ADU_INSTANCE_NAME:-nRFAssetTrackerADU} \
                 location=${LOCATION} \
                 appRegistrationClientId=${APP_REG_CLIENT_ID} \
                 b2cTenant=${B2C_TENANT} \

arm/resources.ts

@@ -3,6 +3,9 @@ export const resourceGroupName = (): string =>
 
 export const appName = (): string => process.env.APP_NAME ?? 'nrfassettracker'
 
+export const aduInstanceName = (): string =>
+	process.env.ADU_INSTANCE_NAME ?? 'nRFAssetTrackerADU'
+
 /**
  * Returns the name of the Device Provisioning Service
  */

azuredeploy.json

@@ -46,6 +46,14 @@
         "description": "Specifies the IotHub SKU. At minimum S1 is needed for IoT Device Update."
       }
     },
+    "aduInstanceName": {
+      "type": "string",
+      "minLength": 3,
+      "metadata": {
+        "description": "Specifies the name of the ADU instance. There is a limit of 2 instances per subscription, so the ADU instance needs to be shared between multiple IoT hubs"
+      },
+      "defaultValue": "nRFAssetTrackerADU"
+    },
     "capacityUnits": {
       "type": "int",
       "minValue": 1,
@@ -184,7 +192,7 @@
       "dependsOn": ["[concat(parameters('appName'), 'IotHub')]"]
     },
     {
-      "name": "[concat(parameters('appName'), 'ADU')]",
+      "name": "[parameters('aduInstanceName')]",
       "type": "Microsoft.DeviceUpdate/accounts",
       "apiVersion": "2020-03-01-preview",
       "location": "[parameters('location')]",
@@ -193,7 +201,7 @@
       "dependsOn": []
     },
     {
-      "name": "[concat(parameters('appName'), 'ADU/ADUInstance')]",
+      "name": "[concat(parameters('aduInstanceName'), '/', parameters('appName'))]",
       "type": "Microsoft.DeviceUpdate/accounts/instances",
       "apiVersion": "2020-03-01-preview",
       "location": "[parameters('location')]",
@@ -209,7 +217,7 @@
       "tags": {},
       "dependsOn": [
         "[concat(parameters('appName'), 'IotHub')]",
-        "[concat(parameters('appName'), 'ADU')]"
+        "[parameters('aduInstanceName')]"
       ]
     },
     {