Is it possible to route Slot traffic programmatically via an Az Cmdlet?

1
votes

I would like to be able to route traffic from the "production" Slot to a different slot in Azure via powershell. How could I go about this that does not use RampUpRules?

We have an application in Azure currently with 3 slots (the production slot and 2 additional slots) and via a release pipeline we would like to automatically route all traffic to one of those two slots.

I have found that a "RampUpRule" can achieve this (shown in the code snippet), but it does so via the x-ms-routing-name cookie based on the given rule. I also know that the slot traffic can be done via the Deployment Slots UI on the app service but would like to automate this (if possible).

I have been unable to find a way of doing it using the existing Az cmdlets myself so far - so I was wondering if anyone knew of a way to do this.

$appName = "myapp"
$appService = Get-AzWebApp -Name $appName
$appConfig = $appService.SiteConfig

$rulesList = New-Object -TypeName System.Collections.Generic.List[Microsoft.Azure.Management.WebSites.Models.RampUpRule]
$rule = New-Object -TypeName Microsoft.Azure.Management.WebSites.Models.RampUpRule
$rule.Name = "LiveTraffic"
$rule.ActionHostName = "myapp-staging.azurewebsites.net"
$rule.ReroutePercentage = 100
$rulesList.Add($rule)

$appConfig.Experiments.RampUpRules = $rulesList

Set-AzWebApp -WebApp $appService

The RampUpRules achieve what we would like, but I am not sure if it being done via the set cookie is going to be acceptable.

1
azureazure-web-app-serviceazure-powershellazure-deployment-slots

1 Answers

1
votes

Your script seems works. If you set the ReroutePercentage of the staging slot with 100, your users will be routed to the staging slot automatically, because the routing percentage of production is set to 0. Unless you provide a link with x-ms-routing-name=self like <a href="<webappname>.azurewebsites.net/?x-ms-routing-name=self">Go back to production app</a>.

For more details, you could refer to this link.