In this article, we will explore how to remove authorization rules from Event Hub using PowerShell in a Windows environment. Event Hub is a scalable event processing service provided by Microsoft Azure, which allows you to ingest and process large amounts of data from various sources. Managing authorization rules is an essential aspect of securing Event Hub resources and controlling access to the data. By removing unnecessary or outdated authorization rules, you can ensure that only authorized entities have access to your Event Hub.

Examples:

1. Removing a single authorization rule:

$resourceGroupName = "YourResourceGroup"

$namespace = "YourNamespace"

$eventHubName = "YourEventHub"

$authorizationRuleName = "YourAuthorizationRule"



$eventHub = Get-AzEventHub -ResourceGroupName $resourceGroupName -Namespace $namespace -Name $eventHubName

$rule = Get-AzEventHubAuthorizationRule -EventHub $eventHub -Name $authorizationRuleName



Remove-AzEventHubAuthorizationRule -EventHub $eventHub -AuthorizationRule $rule

2. Removing multiple authorization rules:

$resourceGroupName = "YourResourceGroup"

$namespace = "YourNamespace"

$eventHubName = "YourEventHub"

$authorizationRuleNames = @("AuthorizationRule1", "AuthorizationRule2", "AuthorizationRule3")



$eventHub = Get-AzEventHub -ResourceGroupName $resourceGroupName -Namespace $namespace -Name $eventHubName

$rules = Get-AzEventHubAuthorizationRule -EventHub $eventHub | Where-Object {$_.Name -in $authorizationRuleNames}



$rules | ForEach-Object {

    Remove-AzEventHubAuthorizationRule -EventHub $eventHub -AuthorizationRule $_

}

3. Removing all authorization rules (except the default one):

$resourceGroupName = "YourResourceGroup"

$namespace = "YourNamespace"

$eventHubName = "YourEventHub"



$eventHub = Get-AzEventHub -ResourceGroupName $resourceGroupName -Namespace $namespace -Name $eventHubName

$rules = Get-AzEventHubAuthorizationRule -EventHub $eventHub | Where-Object {$_.Name -ne "RootManageSharedAccessKey"}



$rules | ForEach-Object {

    Remove-AzEventHubAuthorizationRule -EventHub $eventHub -AuthorizationRule $_

}