Podcast Beta
Questions and Answers
What is the primary purpose of Data Collection Rules (DCRs) in Azure Monitor?
How are Data Collection Rules (DCRs) associated with virtual machines?
Which of the following can Data Collection Rules (DCRs) utilize for data management?
Where can you view Data Collection Rules (DCRs) in Azure Monitor?
Signup and view all the answers
What types of telemetry can be collected from virtual machines using Azure Monitor?
Signup and view all the answers
Which method can be used to create Data Collection Rules (DCRs)?
Signup and view all the answers
Can a single DCR be associated with multiple virtual machines?
Signup and view all the answers
What type of environment does this monitoring scenario primarily address?
Signup and view all the answers
What is the purpose of enabling the collection of processes and dependencies in VM Insights?
Signup and view all the answers
Which table contains traffic data for open server ports on the machine?
Signup and view all the answers
Which event types should at least be collected from Windows event logs to support alerting?
Signup and view all the answers
When filtering Syslog events for alerting, which events are recommended to collect?
Signup and view all the answers
Which of the following filters is rarely useful to collect from Windows event logs?
Signup and view all the answers
What can be used for more tailored filtering when collecting Windows and Syslog events?
Signup and view all the answers
What is a typical use case for collecting events from Windows and Syslog?
Signup and view all the answers
What should be the minimum event level collected from Windows logs to analyze trends?
Signup and view all the answers
What is one of the main reasons to edit a Data Collection Rule (DCR)?
Signup and view all the answers
What should be considered to manage costs effectively in Azure Monitor?
Signup and view all the answers
What is the typical data generated by a virtual machine per month?
Signup and view all the answers
What strategy should be implemented regarding DCRs as the environment grows in complexity?
Signup and view all the answers
What data should be filtered out to reduce costs in Azure Monitor?
Signup and view all the answers
What should you utilize to better predict expected costs across your virtual machine environment?
Signup and view all the answers
What is the purpose of using transformations in DCRs?
Signup and view all the answers
Which of the following data attributes could be considered excessive in Windows event logs?
Signup and view all the answers
What condition must be met for a service to be included in the Kusto query regarding Windows services?
Signup and view all the answers
Which of the following Kusto queries would you use to find the count of open ports on your VMs?
Signup and view all the answers
What is one of the potential strategies mentioned for monitoring ports on a machine?
Signup and view all the answers
What type of information does the VMBoundPort table provide?
Signup and view all the answers
What is the purpose of summarizing data by 'TimeGenerated' in the Kusto query for Windows services?
Signup and view all the answers
In the context of VM insights, what does the term 'missing heartbeat alert' refer to?
Signup and view all the answers
How does counting distinct ports help assess security vulnerabilities in VMs?
Signup and view all the answers
What action should be taken if a service on a VM is found to be in a 'Stopped' state?
Signup and view all the answers
What is the purpose of the first query that summarizes CPU usage?
Signup and view all the answers
What is required to collect logs from an application written to a text file on a virtual machine?
Signup and view all the answers
What does the query 'MyApp_CL | where status == "Error" | summarize AggregatedValue = count() by Computer, bin(TimeGenerated, 15m)' do?
Signup and view all the answers
Which statement is correct regarding IIS log collection?
Signup and view all the answers
What does the 'arg_max' function do in the context of the performance query?
Signup and view all the answers
Which of the following is a valid reason for collecting IIS logs with Azure Monitor Agent?
Signup and view all the answers
Which component of the query 'Perf | where TimeGenerated >ago(5m) | where ObjectName == "Process"' indicates the time frame for the data being analyzed?
Signup and view all the answers
What is the consequence of not configuring the ingestion of text logs properly?
Signup and view all the answers
Study Notes
Azure Monitor Virtual Machines: Data Collection
- Data collection from Azure Monitor Agent is defined by one or more data collection rules (DCRs) that are stored in your Azure subscription and associated with virtual machines.
- A single machine can be associated with multiple DCRs, and a single DCR can be associated with multiple machines.
- Azure Monitor cost is dependent on the amount of data you collect.
- A typical virtual machine generates between 1 GB and 3 GB of data per month.
- Data size depends on machine configuration, workloads running on it, and DCR configuration.
- Before configuring data collection across all virtual machines, start with representative machines to predict costs.
- Use Log Analytics workspace insights or log queries in Data volume by computer to determine the amount of billable data collected for each machine.
- Consider filtering out data not used for alerting, forensic or diagnostic value, regulatory requirements, or dashboards/workbooks.
- Transformations can implement more granular filtering and filter data from columns with little value.
- VM insights won't enable collection of processes and dependencies by default, to save data ingestion costs.
- Processes and dependencies collection are required for the Map feature and deploy the dependency agent to the machine.
- Enable this collection if you want to use the Map feature.
Windows and Syslog Events
- Collect at least Critical, Error, and Warning events for the System and Application logs to support alerting.
- Add Information events to analyze trends and support troubleshooting.
- Verbose events are rarely useful and typically shouldn't be collected.
- Collect at least LOG_WARNING events for each Syslog facility to support alerting.
- Add Information events to analyze trends and support troubleshooting.
- LOG_DEBUG events are rarely useful and typically shouldn't be collected.
Text Logs
- Create a custom table and DCR to collect text logs from applications.
- Define the location of the text log, detailed configuration, and custom table schema.
- There is a cost for ingestion and retention of this data in the workspace.
IIS Logs
- Configure IIS log collection by using Collect IIS logs with Azure Monitor Agent.
- There's a cost for the ingestion and retention of this data in the workspace.
- Records from the IIS log are stored in the W3CIISLog table in the Log Analytics workspace.
Port Monitoring
- Verify that a machine is listening on a particular port using Dependency agent tables.
- Analyze connections and ports using VMConnection and VMBoundPort tables.
- The VMBoundPort table is updated every minute with each process running on the computer and the port it's listening on.
- Create a log search alert to find processes that have stopped or alert when the machine isn't listening on a particular port.
Analyze Network Activity
- Review the count of ports open on your VMs to assess which VMs have configuration and security vulnerabilities.
- List the bound ports on your VMs to assess which VMs have configuration and security vulnerabilities.
- Analyze network activity by port to determine how your application or service is configured.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz explores the principles and practices of data collection from Azure Monitor for virtual machines. Understand how data collection rules (DCRs) function, how they impact costs, and the importance of analyzing data volume for effective configuration. Learn strategies for optimizing data collection while managing expenses.