Azure Monitor provides a unified view of all your resources’ operational health across on-premises, Azure, and other clouds. It delivers a comprehensive solution for collecting, analyzing, and acting on telemetry from your cloud and on-premises environments, thereby allowing you to maximize the performance and availability of your applications and proactively identify problems.
Configuring the diagnostic settings plays a crucial role in managing the operational health of your resources. The settings help you to route the log data to different destinations like Log Analytics workspaces, storage accounts, or Event Hubs. It is an essential step in understanding how to interpret logs and setting up alert rules.
Log Analytics
Log Analytics is a service in Azure Monitor that helps you collect and analyze data generated by resources in your Azure, on-premises environments, and other cloud services. It provides real-time analysis, supports search queries, and can handle complex custom log-based analytics.
In the Azure portal, you can navigate to the resource that you want to monitor, select Diagnostic settings, and then select ‘Add diagnostic setting’. From there, you can select the logs and metrics you want to collect and specify the Log Analytics workspace where you want the logs to be sent.
Storage Account
A storage account in Azure is a unique namespace in Azure for your data. Every object that you store in Azure Storage has an address that includes your unique account name. The combination of the account name and the Azure Storage blob endpoint forms the base address for each object in your storage account.
For collecting logs, you have to ensure that a storage account is set up in the Azure portal. You can then select this account when configuring the diagnostic settings. In the Storage account section, select your desired account from the dropdown menu.
Event Hub
Event Hubs is a fully managed, real-time data ingestion service that’s simple, trusted, and scalable. It can receive and process millions of events per second, so you can process and analyze the massive volumes of data produced by your connected devices and applications.
To set up log routing to an Event Hub, you firstly need an Event Hub namespace and an Event Hub within that namespace. In the Event Hub section of the diagnostic settings, you can select the target Event Hub associated with a namespace.
In conclusion, configuring diagnostic settings, including Log Analytics, storage accounts, and Event Hubs plays a significant role in managing your system health and preventing downtime. Understanding these key Azure Monitor services, along with how they interact, will enable a more robust and comprehensive monitoring strategy that will serve you well in your role as a Microsoft Identity and Access Administrator and aid your preparation for the SC-300 exam.
Practice Test
True/False: Log Analytics is a tool in Azure that you can use to edit and run log queries from data collected by Azure Monitor Logs.
- Answer: True
Explanation: Log Analytics is a tool which allows you to write and perform log queries on the data sourced by Azure Monitor Logs.
Which of the following is not a potential diagnostic setting destination in Azure?
- a) Log Analytics workspace
- b) Storage account
- c) Event Hubs
- d) OneDrive
Answer: d) OneDrive
Explanation: Azure diagnostic settings can be sent to a Log Analytics workspace, a storage account, and Event Hubs. OneDrive isn’t a supported destination.
True/False: Event Hubs is a data ingestion service in Azure, facilitating the streaming, processing, and storage of events.
- Answer: True
Explanation: Event Hubs is indeed a data ingestion service in Azure that can ingest millions of events per second and store them for later consumption, making it ideal for big data scenarios.
True/False: It is not possible to configure diagnostic settings at a resource level.
- Answer: False
Explanation: Diagnostic settings can be configured at individual resource level in Azure.
How can you view the diagnostic logs of your Azure services?
- a) Directly on the Azure portal
- b) Using Log Analytics
- c) Through connecting to a storage account
- d) All these options
Answer: d) All these options
Explanation: You can view the diagnostics logs on Azure portal, but depending on your settings, you may also access them via Log Analytics or a connected storage account.
If diagnostic settings are enabled on a virtual machine, what types of data can be captured?
- a) Metrics
- b) Logs
- c) Health Data
- d) All the above
Answer: d) All the above
Explanation: When diagnostic settings are enabled, Azure captures logs, metrics, and health data of the virtual machine.
True/False: Log Analytics is only used for analyzing activity logs.
- Answer: False
Explanation: Log Analytics can be used to analyze both activity logs and diagnostic logs.
What is the primary purpose of configuring diagnostic settings in Azure?
- a) To capture and send platform logs and metrics to different locations
- b) To increase the performance of an application
- c) To upgrade the Azure subscription
- d) None of the above
Answer: a) To capture and send platform logs and metrics to different locations
Explanation: Diagnostic settings in Azure are mainly used to capture and send platform metrics and logs for your Azure resources.
True/False: Diagnostic settings can be configured to send logs and metrics to more than one destination.
- Answer: True
Explanation: Azure diagnostic settings can be configured to send logs and metrics to multiple destinations including Log Analytics workspace, storage accounts, and Event Hubs.
What data can be exported to a Log Analytics workspace, storage accounts, and Event Hubs using the diagnostic settings in Azure?
- a) Logs
- b) Metrics
- c) Both a and b
- d) None of the above
Answer: c) Both a and b
Explanation: By using Azure diagnostic settings, we can export both logs and metrics to a Log Analytics workspace, storage accounts, and Event Hubs.
Interview Questions
How would you define Log Analytics in Azure?
Log Analytics is a service in Azure that collects, analyzes, and provides actionable insights from the logs and data from your cloud and on-premises environments, helping you to maintain optimal performance and availability.
What is the use of a storage account in Azure?
Storage accounts in Azure are used for storing data objects such as blobs, files, queues, tables, and disks. It provides a unique namespace for your Azure Storage data accessible from anywhere in the world over HTTP or HTTPS.
In the context of Azure, what exactly is the Event Hub?
Azure Event Hubs is a big data streaming platform and event ingestion service, which can receive and process millions of events per second.
How do you configure diagnostic settings for a resource in Azure?
To configure diagnostic settings for a resource in Azure, one needs to navigate to the Azure portal, select the relevant subscription and resource. In the Monitoring section, select Diagnostic settings and add a new setting. Here, you can specify the details for sending data to a Log Analytics workspace, storage account, or event hub.
What type of data does Log Analytics in Azure collect?
Log Analytics collects telemetry and other data from a range of sources, including different Azure services, applications, and OS data from virtual machines. It stores this data in a Log Analytics workspace for further aggregation and analysis.
How can you send Azure Activity Logs to a Storage Account?
In Azure, you can send Activity Logs to a Storage Account by first navigating to the “Activity Log” blade from the Azure Monitor. You then enable diagnostic settings and select to send the data to a storage account.
Are Azure Event Hubs and Azure Service Bus the same?
No, Azure Event Hubs and Azure Service Bus are not the same even though both are used for high-speed data transmissions. While Event Hubs are designed for high-throughput, large scale data streaming, Service Bus is more tuned towards enterprise-level message communication with additional features for message ordering, duplicate detection, and more.
What is the purpose of a Log Analytics workspace in Azure?
A Log Analytics workspace is a unique environment that includes data and configurations. In simpler terms, it is a container where the data collected from different sources gets stored.
How can you monitor storage accounts in Azure?
You can monitor storage accounts in Azure using Azure Metrics and Azure Monitor logs. Azure Monitor logs provide more detailed diagnostic and auditing information.
What is the benefit of connecting Azure Event Hubs with Log Analytics?
By connecting Azure Event Hubs with Log Analytics, you can collect and analyze log data from different sources in real-time. This combination can efficiently process large amounts of event data and provide near-real-time analytics on that data stream.
What data can be sent to the Azure storage account for diagnostics?
You can send various types of Azure-generated data to a storage account for diagnostics. This includes event logs, crash dumps, metrics, and Azure Diagnostic logs.
How does Microsoft guarantee security and privacy when dealing with Log Analytics?
Microsoft safeguards the data in Log Analytics by transmitting it over a secure channel and storing it encrypted at rest in Azure. Furthermore, Azure has inbuilt compliance with key industry standards.
Do diagnostic settings in Azure persist after the associated resources are deleted?
No, If you delete a resource, the diagnostic settings for that resource are also deleted.
What are Common uses for the Azure Event Hubs?
Azure Event Hubs are commonly used for big data pipelines, real-time analytics, capturing logs, and streaming telemetry.
Can you change the diagnostic settings for multiple resources at one time in Azure?
Yes, you can change diagnostic settings for multiple resources at once in Azure by using Azure Policy.