feat: Implemented reusing of log analytics workspace

documentation/DeploymentGuide.md

@@ -46,7 +46,16 @@ For **production deployments**, the repository also provides [`main.waf-aligned.
 - For a WAF-aligned, production-ready deployment, copy the contents of [`main.waf-aligned.bicepparam`](../infra/main.waf-aligned.bicepparam) into `main.bicepparam` before running `azd up`.
 
 > [!TIP]
-> Always review and adjust parameter values (such as region, capacity, and security settings) to match your organization’s requirements before deploying. For production, ensure you have sufficient quota and follow the principle of least privilege for all identities and role assignments.
+> Always review and adjust parameter values (such as region, capacity, security settings and log analytics workspace configuration) to match your organization’s requirements before deploying. For production, ensure you have sufficient quota and follow the principle of least privilege for all identities and role assignments.
+
+> To reuse an existing Log Analytics workspace, update the existingWorkspaceResourceId field under the logAnalyticsWorkspaceConfiguration parameter in the bicepparam file with the resource ID of your existing workspace.
+For example: 
+```
+param logAnalyticsWorkspaceConfiguration = {
+  dataRetentionInDays: 30
+  existingWorkspaceResourceId: '/subscriptions/<subscription-id>/resourceGroups/<resource-group>/providers/Microsoft.OperationalInsights/workspaces/<workspace-name>'
+}
+```
 
 > [!IMPORTANT]
 > The WAF-aligned configuration is under active development. More Azure Well-Architected recommendations will be added in future updates.

infra/main.bicep

@@ -34,6 +34,7 @@ param logAnalyticsWorkspaceConfiguration logAnalyticsWorkspaceConfigurationType
   sku: 'PerGB2018'
   tags: tags
   dataRetentionInDays: 365
+  existingWorkspaceResourceId: ''
 }
 
 @description('Optional. The configuration to apply for the Multi-Agent Custom Automation Engine Application Insights resource.')
@@ -255,7 +256,10 @@ resource avmTelemetry 'Microsoft.Resources/deployments@2024-03-01' = if (enableT
 // Log Analytics configuration defaults
 var logAnalyticsWorkspaceEnabled = logAnalyticsWorkspaceConfiguration.?enabled ?? true
 var logAnalyticsWorkspaceResourceName = logAnalyticsWorkspaceConfiguration.?name ?? 'log-${solutionPrefix}'
-module logAnalyticsWorkspace 'br/public:avm/res/operational-insights/workspace:0.11.2' = if (logAnalyticsWorkspaceEnabled) {
+var existingWorkspaceResourceId = logAnalyticsWorkspaceConfiguration.?existingWorkspaceResourceId ?? ''
+var useExistingWorkspace = existingWorkspaceResourceId != ''
+
+module logAnalyticsWorkspace 'br/public:avm/res/operational-insights/workspace:0.11.2' = if (logAnalyticsWorkspaceEnabled && !useExistingWorkspace) {
   name: take('avm.res.operational-insights.workspace.${logAnalyticsWorkspaceResourceName}', 64)
   params: {
     name: logAnalyticsWorkspaceResourceName
@@ -268,6 +272,8 @@ module logAnalyticsWorkspace 'br/public:avm/res/operational-insights/workspace:0
   }
 }
 
+var logAnalyticsWorkspaceId = useExistingWorkspace ? existingWorkspaceResourceId : logAnalyticsWorkspace.outputs.resourceId
+
 // ========== Application Insights ========== //
 // WAF best practices for Application Insights: https://learn.microsoft.com/en-us/azure/well-architected/service-guides/application-insights
 // Application Insights configuration defaults
@@ -277,12 +283,12 @@ module applicationInsights 'br/public:avm/res/insights/component:0.6.0' = if (ap
   name: take('avm.res.insights.component.${applicationInsightsResourceName}', 64)
   params: {
     name: applicationInsightsResourceName
-    workspaceResourceId: logAnalyticsWorkspace.outputs.resourceId
+    workspaceResourceId: logAnalyticsWorkspaceId
     location: applicationInsightsConfiguration.?location ?? solutionLocation
     enableTelemetry: enableTelemetry
     tags: applicationInsightsConfiguration.?tags ?? tags
     retentionInDays: applicationInsightsConfiguration.?retentionInDays ?? 365
-    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspace.outputs.resourceId }]
+    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspaceId }]
     kind: 'web'
     disableIpMasking: false
     flowType: 'Bluefield'
@@ -315,7 +321,7 @@ module networkSecurityGroupBackend 'br/public:avm/res/network/network-security-g
     location: networkSecurityGroupBackendConfiguration.?location ?? solutionLocation
     tags: networkSecurityGroupBackendConfiguration.?tags ?? tags
     enableTelemetry: enableTelemetry
-    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspace.outputs.resourceId }]
+    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspaceId }]
     securityRules: networkSecurityGroupBackendConfiguration.?securityRules ?? [
       // {
       //   name: 'DenySshRdpOutbound' //Azure Bastion
@@ -346,7 +352,7 @@ module networkSecurityGroupContainers 'br/public:avm/res/network/network-securit
     location: networkSecurityGroupContainersConfiguration.?location ?? solutionLocation
     tags: networkSecurityGroupContainersConfiguration.?tags ?? tags
     enableTelemetry: enableTelemetry
-    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspace.outputs.resourceId }]
+    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspaceId }]
     securityRules: networkSecurityGroupContainersConfiguration.?securityRules ?? [
       // {
       //   name: 'DenySshRdpOutbound' //Azure Bastion
@@ -377,7 +383,7 @@ module networkSecurityGroupBastion 'br/public:avm/res/network/network-security-g
     location: networkSecurityGroupBastionConfiguration.?location ?? solutionLocation
     tags: networkSecurityGroupBastionConfiguration.?tags ?? tags
     enableTelemetry: enableTelemetry
-    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspace.outputs.resourceId }]
+    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspaceId }]
     securityRules: networkSecurityGroupBastionConfiguration.?securityRules ?? [
       {
         name: 'AllowHttpsInBound'
@@ -534,7 +540,7 @@ module networkSecurityGroupAdministration 'br/public:avm/res/network/network-sec
     location: networkSecurityGroupAdministrationConfiguration.?location ?? solutionLocation
     tags: networkSecurityGroupAdministrationConfiguration.?tags ?? tags
     enableTelemetry: enableTelemetry
-    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspace.outputs.resourceId }]
+    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspaceId }]
     securityRules: networkSecurityGroupAdministrationConfiguration.?securityRules ?? [
       // {
       //   name: 'DenySshRdpOutbound' //Azure Bastion
@@ -651,12 +657,12 @@ module virtualMachine 'br/public:avm/res/compute/virtual-machine:0.13.0' = if (v
         name: 'nic-${virtualMachineResourceName}'
         //networkSecurityGroupResourceId: virtualMachineConfiguration.?nicConfigurationConfiguration.networkSecurityGroupResourceId
         //nicSuffix: 'nic-${virtualMachineResourceName}'
-        diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspace.outputs.resourceId }]
+        diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspaceId }]
         ipConfigurations: [
           {
             name: '${virtualMachineResourceName}-nic01-ipconfig01'
             subnetResourceId: virtualMachineConfiguration.?subnetResourceId ?? virtualNetwork.outputs.subnetResourceIds[1]
-            diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspace.outputs.resourceId }]
+            diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspaceId }]
           }
         ]
       }
@@ -730,7 +736,7 @@ var aiFoundryAiServicesModelDeployment = {
   sku: {
     name: 'GlobalStandard'
     //Curently the capacity is set to 140 for opinanal performance. 
-    capacity: aiFoundryAiServicesConfiguration.?modelCapcity ?? 140
+    capacity: aiFoundryAiServicesConfiguration.?modelCapacity ?? 140
   }
   raiPolicyName: 'Microsoft.Default'
 }
@@ -742,7 +748,7 @@ module aiFoundryAiServices 'br/public:avm/res/cognitive-services/account:0.10.2'
     tags: aiFoundryAiServicesConfiguration.?tags ?? tags
     location: aiFoundryAiServicesConfiguration.?location ?? azureOpenAILocation
     enableTelemetry: enableTelemetry
-    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspace.outputs.resourceId }]
+    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspaceId }]
     sku: aiFoundryAiServicesConfiguration.?sku ?? 'S0'
     kind: 'AIServices'
     disableLocalAuth: false //Should be set to true for WAF aligned configuration
@@ -841,7 +847,7 @@ module aiFoundryStorageAccount 'br/public:avm/res/storage/storage-account:0.18.2
     location: aiFoundryStorageAccountConfiguration.?location ?? azureOpenAILocation
     tags: aiFoundryStorageAccountConfiguration.?tags ?? tags
     enableTelemetry: enableTelemetry
-    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspace.outputs.resourceId }]
+    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspaceId }]
     skuName: aiFoundryStorageAccountConfiguration.?sku ?? 'Standard_ZRS'
     allowSharedKeyAccess: false
     networkAcls: {
@@ -852,7 +858,7 @@ module aiFoundryStorageAccount 'br/public:avm/res/storage/storage-account:0.18.2
       deleteRetentionPolicyEnabled: false
       containerDeleteRetentionPolicyDays: 7
       containerDeleteRetentionPolicyEnabled: false
-      diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspace.outputs.resourceId }]
+      diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspaceId }]
     }
     publicNetworkAccess: virtualNetworkEnabled ? 'Disabled' : 'Enabled'
     allowBlobPublicAccess: virtualNetworkEnabled ? false : true
@@ -912,7 +918,7 @@ module aiFoundryAiHub 'modules/ai-hub.bicep' = if (aiFoundryAiHubEnabled) {
     aiFoundryAiServicesName: aiFoundryAiServices.outputs.name
     applicationInsightsResourceId: applicationInsights.outputs.resourceId
     enableTelemetry: enableTelemetry
-    logAnalyticsWorkspaceResourceId: logAnalyticsWorkspace.outputs.resourceId
+    logAnalyticsWorkspaceResourceId: logAnalyticsWorkspaceId
     storageAccountResourceId: aiFoundryStorageAccount.outputs.resourceId
     virtualNetworkEnabled: virtualNetworkEnabled
     privateEndpoints: virtualNetworkEnabled
@@ -948,7 +954,7 @@ module aiFoundryAiProject 'br/public:avm/res/machine-learning-services/workspace
     location: aiFoundryAiProjectConfiguration.?location ?? azureOpenAILocation
     tags: aiFoundryAiProjectConfiguration.?tags ?? tags
     enableTelemetry: enableTelemetry
-    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspace.outputs.resourceId }]
+    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspaceId }]
     sku: aiFoundryAiProjectConfiguration.?sku ?? 'Basic'
     kind: 'Project'
     hubResourceId: aiFoundryAiHub.outputs.resourceId
@@ -991,7 +997,7 @@ module cosmosDb 'br/public:avm/res/document-db/database-account:0.12.0' = if (co
     location: cosmosDbAccountConfiguration.?location ?? solutionLocation
     tags: cosmosDbAccountConfiguration.?tags ?? tags
     enableTelemetry: enableTelemetry
-    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspace.outputs.resourceId }]
+    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspaceId }]
     databaseAccountOfferType: 'Standard'
     enableFreeTier: false
     networkRestrictions: {
@@ -1065,7 +1071,7 @@ module containerAppEnvironment 'modules/container-app-environment.bicep' = if (c
     name: containerAppEnvironmentResourceName
     tags: containerAppEnvironmentConfiguration.?tags ?? tags
     location: containerAppEnvironmentConfiguration.?location ?? solutionLocation
-    logAnalyticsResourceName: logAnalyticsWorkspace.outputs.name
+    logAnalyticsResourceId: logAnalyticsWorkspaceId
     publicNetworkAccess: 'Enabled'
     zoneRedundant: virtualNetworkEnabled ? true : false
     applicationInsightsConnectionString: applicationInsights.outputs.connectionString
@@ -1210,7 +1216,7 @@ module webServerFarm 'br/public:avm/res/web/serverfarm:0.4.1' = if (webServerFar
     skuName: webServerFarmConfiguration.?skuName ?? 'P1v3'
     skuCapacity: webServerFarmConfiguration.?skuCapacity ?? 3
     reserved: true
-    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspace.outputs.resourceId }]
+    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspaceId }]
     kind: 'linux'
     zoneRedundant: false //TODO: make it zone redundant for waf aligned
   }
@@ -1231,7 +1237,7 @@ module webSite 'br/public:avm/res/web/site:0.15.1' = if (webSiteEnabled) {
     enableTelemetry: enableTelemetry
     serverFarmResourceId: webSiteConfiguration.?environmentResourceId ?? webServerFarm.?outputs.resourceId
     appInsightResourceId: applicationInsights.outputs.resourceId
-    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspace.outputs.resourceId }]
+    diagnosticSettings: [{ workspaceResourceId: logAnalyticsWorkspaceId }]
     publicNetworkAccess: 'Enabled' //TODO: use Azure Front Door WAF or Application Gateway WAF instead
     siteConfig: {
       linuxFxVersion: 'DOCKER|${webSiteConfiguration.?containerImageRegistryDomain ?? 'biabcontainerreg.azurecr.io'}/${webSiteConfiguration.?containerImageName ?? 'macaefrontend'}:${webSiteConfiguration.?containerImageTag ?? 'latest'}'
@@ -1292,6 +1298,9 @@ type logAnalyticsWorkspaceConfigurationType = {
   @description('Optional. The number of days to retain the data in the Log Analytics Workspace. If empty, it will be set to 365 days.')
   @maxValue(730)
   dataRetentionInDays: int?
+
+  @description('Optional: Existing Log Analytics Workspace Resource ID')
+  existingWorkspaceResourceId: string?
 }
 
 @export()

infra/main.bicepparam

@@ -5,6 +5,7 @@ param solutionLocation = readEnvironmentVariable('AZURE_LOCATION', 'swedencentra
 param azureOpenAILocation = readEnvironmentVariable('AZURE_ENV_OPENAI_LOCATION', 'swedencentral')
 param logAnalyticsWorkspaceConfiguration = {
   dataRetentionInDays: 30
+  existingWorkspaceResourceId: ''
 }
 param applicationInsightsConfiguration = {
   retentionInDays: 30

infra/main.waf-aligned.bicepparam

@@ -7,3 +7,7 @@ param virtualMachineConfiguration = {
   adminUsername: 'adminuser'
   adminPassword: 'P@ssw0rd1234'
 }
+
+param logAnalyticsWorkspaceConfiguration = {
+  existingWorkspaceResourceId: ''
+}

infra/modules/container-app-environment.bicep

@@ -1,6 +1,6 @@
 param name string
 param location string
-param logAnalyticsResourceName string
+param logAnalyticsResourceId string
 param tags object
 param publicNetworkAccess string
 //param vnetConfiguration object
@@ -10,8 +10,12 @@ param enableTelemetry bool
 param subnetResourceId string
 param applicationInsightsConnectionString string
 
-resource logAnalyticsWorkspace 'Microsoft.OperationalInsights/workspaces@2023-09-01' existing = {
-  name: logAnalyticsResourceName
+var logAnalyticsResourceGroup = split(logAnalyticsResourceId, '/')[4]
+var logAnalyticsName = split(logAnalyticsResourceId, '/')[8]
+
+resource logAnalyticsWorkspace 'Microsoft.OperationalInsights/workspaces@2020-08-01' existing = {
+  name: logAnalyticsName
+  scope: resourceGroup(logAnalyticsResourceGroup)
 }
 
 // resource containerAppEnvironment 'Microsoft.App/managedEnvironments@2024-08-02-preview' = {