Azure Service Bus autoscaling in bicep template - azure

Question

On our project we are using Service Bus, for the Infrastructure as Code we are using bicep template in order to deploy this Service Bus. Lately we came to the conclusion that we should enable scaling for our service bus as we were having some serious issues with the capacity of just 1 single Message Unit.
Does anyone know if there is anyway to add the autoscaling in the bicep template for a service bus Azure Resource ? I cannot really find something in the MS official documentation.
Google didn't helped ...

Answer 1

If you have a look at the documentation, there is an ARM template that show how to configure autoscaling:
Automatically update messaging units of an Azure Service Bus namespace.
The equivalent bicep (using az bicep decompile) looks like this:
#description('Name of the Service Bus namespace')
param serviceBusNamespaceName string
#description('Name of the Queue')
param serviceBusQueueName string
#description('Name of the auto scale setting.')
param autoScaleSettingName string
#description('Location for all resources.')
param location string = resourceGroup().location
resource serviceBusNamespaceName_resource 'Microsoft.ServiceBus/namespaces#2021-11-01' = {
name: serviceBusNamespaceName
location: location
sku: {
name: 'Premium'
}
properties: {
}
}
resource serviceBusNamespaceName_serviceBusQueueName 'Microsoft.ServiceBus/namespaces/queues#2021-11-01' = {
parent: serviceBusNamespaceName_resource
name: '${serviceBusQueueName}'
properties: {
lockDuration: 'PT5M'
maxSizeInMegabytes: 1024
requiresDuplicateDetection: false
requiresSession: false
defaultMessageTimeToLive: 'P10675199DT2H48M5.4775807S'
deadLetteringOnMessageExpiration: false
duplicateDetectionHistoryTimeWindow: 'PT10M'
maxDeliveryCount: 10
autoDeleteOnIdle: 'P10675199DT2H48M5.4775807S'
enablePartitioning: false
enableExpress: false
}
}
resource autoScaleSettingName_resource 'Microsoft.Insights/autoscaleSettings#2021-05-01-preview' = {
name: autoScaleSettingName
location: 'East US'
tags: {
}
properties: {
name: autoScaleSettingName
enabled: true
predictiveAutoscalePolicy: {
scaleMode: 'Disabled'
scaleLookAheadTime: null
}
targetResourceUri: serviceBusNamespaceName_resource.id
profiles: [
{
name: 'Increase messaging units to 2 on weekends'
capacity: {
minimum: '2'
maximum: '2'
default: '2'
}
rules: []
recurrence: {
frequency: 'Week'
schedule: {
timeZone: 'Eastern Standard Time'
days: [
'Saturday'
'Sunday'
]
hours: [
6
]
minutes: [
0
]
}
}
}
{
name: '{"name":"Scale Out at 75% CPU and Scale In at 25% CPU","for":"Increase messaging units to 4 on weekends"}'
capacity: {
minimum: '1'
maximum: '8'
default: '2'
}
rules: [
{
scaleAction: {
direction: 'Increase'
type: 'ServiceAllowedNextValue'
value: '1'
cooldown: 'PT5M'
}
metricTrigger: {
metricName: 'NamespaceCpuUsage'
metricNamespace: 'microsoft.servicebus/namespaces'
metricResourceUri: serviceBusNamespaceName_resource.id
operator: 'GreaterThan'
statistic: 'Average'
threshold: 75
timeAggregation: 'Average'
timeGrain: 'PT1M'
timeWindow: 'PT10M'
dimensions: []
dividePerInstance: false
}
}
{
scaleAction: {
direction: 'Decrease'
type: 'ServiceAllowedNextValue'
value: '1'
cooldown: 'PT5M'
}
metricTrigger: {
metricName: 'NamespaceCpuUsage'
metricNamespace: 'microsoft.servicebus/namespaces'
metricResourceUri: serviceBusNamespaceName_resource.id
operator: 'LessThan'
statistic: 'Average'
threshold: 25
timeAggregation: 'Average'
timeGrain: 'PT1M'
timeWindow: 'PT10M'
dimensions: []
dividePerInstance: false
}
}
]
recurrence: {
frequency: 'Week'
schedule: {
timeZone: 'Eastern Standard Time'
days: [
'Saturday'
'Sunday'
]
hours: [
18
]
minutes: [
0
]
}
}
}
]
notifications: []
targetResourceLocation: 'East US'
}
}