I recently ran into an issue when setting app settings via the az functionapp config appsettings command. The issue specifically occurs when there are spaces or special characters in the values:
az functionapp config appsettings set --name MyFunctionApp --resource-group MyResourceGroup --subscription MySubscription --settings "MyAppSetting=This has a # sign"
The Solution
If you are running into the same issue, the solution is to put the whole command in a string and then call it with eval. This will ensure that the quotes are handled correctly and your settings will be applied successfully.
You can use the following code to set your app settings values:
settings="\"My App Setting=This has a space\" \"Another App Setting=This has a # sign\""
eval "az functionapp config appsettings set --name MyFunctionApp --resource-group MyResourceGroup --subscription MySubscription --settings $settings"
Using eval command will correctly handle the quotes and enable you to set values with spaces or other special characters.
Background
I initially found the solution in this StackOverflow article: https://stackoverflow.com/questions/57762136/azure-cli-az-functionapp-config-appsettings-space-in-appsetting
Conclusion
Working with special characters and spaces in Azure CLI commands can be tricky due to shell parsing behavior. The eval approach provides a reliable way to ensure that your configuration values are properly escaped and applied to your Azure Function Apps, regardless of the special characters they contain.