azure cli command is not working when setting minTlsVersion to 1.2 for FunctionApp's

when i run the below command in Azure CLI it appears to work, because i get a big dump of JSON back that shows all of my settings for the function app, with it's "minTlsVersion" set to 1.2.

az functionapp config set --min-tls-version 1.2 --id"/subscriptions/redacted/resourceGroups/Production/providers/Microsoft.Web/sites/func-app-name"

However, when i then run:

az functionapp list

and check the functionapp whose config i just updated, it is back to "minTlsVersion": null.

I tried with multiple function apps, but no luck.

does anyone know what I'm doing wrong?

Solution

According to this Github issue1 and Github issue2. This behaviour in az functionapp list and az webapp list is by default where the site-config values are shown as null to avoid performance issues on the list commands.

As a workaround you can use az function app show command to get the accurate value like below:-

az functionapp show --name siliconfunctls1 --resource-group siliconrg89

Output:-

enter image description here

Received minTlsVersion value successfully like below:-

enter image description here

When I tried to set the min-tls-version to 1.2 and then tried to list the site config setting, I received null response, Refer below:-

Commands:-

az functionapp config set --name siliconfunctls1 --resource-group siliconrg89 --min-tls-version 1.2

az functionapp list

Output:-

enter image description here

az functionapp list output showed minTlsVersion as null

enter image description here

Azure CLI command reference:- az functionapp | Microsoft Learn