ARM Templates for Azure Functions with many appSettings for different environments and slots

Question

I\'ve got two Azure Function apps that use deployment slots, stage and production. These two Azure Function apps have about 50~ key:value pairs in Application Settings to de

Answer 1

It is possible to combine static configuration with deployment-time references. You use the union template function to combine your static configuration (object or array) with some deployment-time value that you wrap using the json template function.

I use this to set Application Insights at deployment-time with a base config object and a app service-specific object (broken up for easier reading):

[union(
  variables('appServiceBaseConfig'), 
  variables('appService1'), 
  json(
    concat(
      '{\"APPINSIGHTS_INSTRUMENTATIONKEY\":\"', 
      reference(concat('microsoft.insights/components/', variables('applicationInsightsName')), '2015-05-01').InstrumentationKey,
       '\"}')
    )
  )
]