Event Hub should have multiple partitions for availability

Medium Azure General eventhubs-event-hub-multiple-partitions

Applies to

Microsoft.EventHub/namespaces/eventhubs

What CGPulse checks

A resource passes this rule when partitionCount must be one of [2,4,8,16,32]. Anything else is reported as a finding with the evaluated property value attached as evidence.

How to fix it

Configure multiple partitions for better throughput and availability. In Azure Portal: Event Hub > Properties > verify partition count (set at creation). See: https://learn.microsoft.com/en-us/azure/event-hubs/event-hubs-scalability#partitions

CLI

az eventhubs eventhub show --ids "{id}" --query partitionCount

Bicep

resource eventHub 'Microsoft.EventHub/namespaces/eventhubs@2024-01-01' = {
  name: '{name}'
  parent: eventHubNamespace
  properties: {
    partitionCount: 4
    messageRetentionInDays: 7
  }
}

Terraform

resource "azurerm_eventhub" "{name}" {
  name                = "{name}"
  namespace_name      = "{parent}"
  resource_group_name = "{rg}"
  partition_count     = 4
  message_retention   = 7
}

Compliance frameworks

Cloud Security: Azure Foundations

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