Azure slots :Can i swap only app settings/connection strings? - azure

Question

Is there a way we can swap only app settings/connectionstrings but not code from Azure App Service slot using azure DevOps pipeline or Azure CLI?

Answer 1

We are trying to get connectionstring directly from the slot and swap it to prod but not code.
As far as I know, you can use Azure CLI to achieve it.
Appsettings: az webapp config appsettings
ConnectString: az webapp config connection-string
You could use Azure CLI to list appsettings/connectionstring. Then you could use the set command to pass the values to the slot.
Here is my sample(In Azure Devops Azure CLI Task):
$appsettings=az webapp config appsettings list --name webappname -g ResourcesGroupName --slot slotname
$appsettings| Out-File "$(System.DefaultWorkingDirectory)\appsettings.json"
az webapp config appsettings set -g ResourcesGroupName -n webappname --settings -slot slotname "#$(System.DefaultWorkingDirectory)\appsettings.json"
$connectstring=az webapp config connection-string list --name webappname -g ResourcesGroupName --slot slotname
$test = $connectstring | ConvertFrom-Json
$test | Select-Object -Property Name,slotSetting ,type,Value | ForEach-Object {
Write-Host $_.Name $_.Value
$msg = $_.Name , $_.Value -join '='
echo $msg
az webapp config connection-string set --name webappname -g ResourcesGroupName -slot slotname -t mysql --settings $msg
}
Note: Here is an known issue about the az webapp config connection-string set. It couldn't support to set files in settings parameter for the time being.

Answer 2

You can try this,
Step 1 : Create two separated environments in a release as per your needs!
Step 2 : Create a variable with the same name as your connection string name in your web.config, one scoped for staging environment and the other for production.
Step 3 : Add a Deploy Azure App Service task to each environment.
Then you could use the File transformation and substitution options and mark to make the transformation. Take a look at XML Transformation and JSON transformation