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5.2. Monitoring (Azure Monitor & Azure Service Health).md

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Monitoring (Azure Monitor & Azure Service Health)

  • 📝 For auditing, any interaction with Azure is recorded as Azure Activity Log

Azure Monitor

  • Solution for collecting, analyzing, and acting on telemetry from cloud and on-premises environments.
  • Helps you understand how your applications are performing and proactively identifies issues affecting them and the resources they depend on.
  • Aggregated view of different monitoring data
  • Increases availability and performance
  • Can be integrated with different services
  • Azure Monitor has its own features for visualizing monitoring data
    • Also can send data different tools such as Dashboards, Views, Power BI

Data sources

  • Application monitoring data
    • About the performance and functionality of the code you have written, regardless of its platform.
  • Guest OS monitoring data
    • Data about the operating system on which your application is running.
    • This could be running in Azure, another cloud, or on-premises.
  • Azure resource monitoring data
    • Data about the operation of an Azure resource.
  • Azure subscription monitoring data
    • Data about the operation and management of an Azure subscription.
    • Data about the health and operation of Azure itself.
  • Azure tenant monitoring data
    • Data about the operation of tenant-level Azure services, such as Azure Active Directory.

Diagnostic settings

  • Collected from e.g. virtual machines and web apps
  • Activity Logs record when resources are created or modified
  • Metrics tell you how the resource is performing and the resources that it's consuming.
  • Some data types are: guest-level monitoring, performance counters, event logs, crash dumps, sinks, agents.

Application Insights

  • Monitors availability, performance, and usage of web applications
  • Leverages data analysis platform in Log Analytics for queries
  • Can diagnose errors without waiting for a user to report them.
  • Integrates with variety of development tools

Azure Monitor for containers

  • Monitors the performance of workloads in Kubernetes clusters in Azure Kubernetes Service (AKS).
  • Collecting memory and processor metrics from controllers, nodes, and containers
  • Container logs are also collected.

Azure Monitor for VMs

  • Monitors on-premises, or cloud VMs at scale
  • Analyzes the performance and health of Windows and Linux VMs
    • also their different processes and interconnected dependencies on other resources & external processes.

Responding

Azure Alerts

  • Azure Monitor proactively notifies you of critical conditions using.
    • e.g. sending a text or email to an administrator who is responsible for investigating an issue.
  • Alert rules based on metrics can provide alerts in almost real-time, based on numeric values.
  • Alert rules based on logs allow for complex logic across data, from multiple sources.

Autoscale

  • Uses Autoscale to ensure that you have the right amount of resources running to manage the load on your application effectively.
  • Enables you to create rules that use metrics from Azure Monitor, to determine when to scale
    • Help reduce your Azure costs by removing resources that are not being used.
    • You provide the logic that determines when Autoscale should increase or decrease resources.

Azure Service Health

  • 📝 Comprehensive view of the health status of Azure
  • Notifies you about Azure services that affect you with impact & information.
    • 📝 Can set-up automatic alerts
  • Guides you to prepare for planned maintenance & other changes that could affect the availability of your resources.
  • Consists of:
    • Azure Status: Global view of the health state of all Azure services.
    • Service Health: customizable dashboard that tracks the Azure services you're using in the regions where you use them
      • Shows events such as ongoing service issues, upcoming planned maintenance, or relevant Health advisories
    • Resource Health: helps you diagnose and obtain support when an Azure service issue affects your resources.
      • Personalized dashboard of your resources' health
      • Provides technical support to help you mitigate problems
      • Shows when you resources was unavailable because of Azure problems
        • Helps you to understand if an SLA was violated.