azure-vm-performance-diagnostics-unenabled: Azure VM Performance Diagnostics Feature Not Enabled

id: azure-vm-performance-diagnostics-unenabled
info:
  name: Azure VM Performance Diagnostics Feature Not Enabled
  author: princechaddha
  severity: medium
  description: |
    Ensure that Performance Diagnostics feature is enabled for your Microsoft Azure virtual machine instances to help mitigate VM performance issues. Performance Diagnostics installs a VM extension that runs PerfInsights, available for both Windows and Linux operating systems. PerfInsights collects and analyzes diagnostic information to provide findings and recommendations for performance issues.
  impact: |
    Not enabling Performance Diagnostics may lead to unresolved VM performance issues due to lack of insights into VM's operational state.
  remediation: |
    Enable the Performance Diagnostics feature by installing the AzurePerformanceDiagnostics extension through Azure Portal or Azure CLI commands to mitigate performance issues and ensure optimal VM operation.
  reference:
    - https://docs.microsoft.com/en-us/azure/virtual-machines/performance-diagnostics
  tags: cloud,devops,azure,microsoft,virtual-machine,azure-cloud-config

flow: |
  code(1);
  for (let vmData of iterate(template.vmList)) {
    vmData = JSON.parse(vmData);
    set("name", vmData.Name);
    set("resourceGroup", vmData.ResourceGroup);
    code(2);
  }

self-contained: true
code:
  - engine:
      - sh
      - bash
    source: |
      az vm list --output json --query '[*].{"Name":name,"ResourceGroup":resourceGroup}'

    extractors:
      - type: json
        name: vmList
        internal: true
        json:
          - '.[]'

  - engine:
      - sh
      - bash
    source: |
      az vm extension list --vm-name "$name" --resource-group "$resourceGroup" --output json --query '[*].{"ExtensionName": name, "ProvisioningState": provisioningState}'

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - 'AzurePerformanceDiagnosticsLinux'

      - type: word
        part: body
        words:
          - 'Succeeded'
        negative: true

    extractors:
      - type: dsl
        dsl:
          - '"Performance Diagnostics is not enabled for " + name + " in " + resourceGroup'
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