Azure Monitor overview - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is Azure Monitor?

Azure Monitor is a service that helps you collect, analyze, and act on telemetry data from your cloud and on-premises environments to keep applications and infrastructure healthy.

beginner

Name two types of data Azure Monitor collects.

Azure Monitor collects metrics (numerical data like CPU usage) and logs (detailed records of events and traces).

intermediate

How does Azure Monitor help with troubleshooting?

It provides tools to analyze collected data, set alerts, and visualize information to quickly find and fix issues.

beginner

What is an alert in Azure Monitor?

An alert is a notification triggered when a specific condition in your monitored data is met, helping you respond quickly to problems.

intermediate

Why is it important to monitor both metrics and logs?

Metrics give you quick insights into system health, while logs provide detailed context to understand what caused issues.

What type of data does Azure Monitor NOT collect?

A User passwords

B Logs

C Traces

D Metrics

Azure Monitor collects metrics, logs, and traces but does not collect sensitive data like user passwords.

Which Azure Monitor feature helps you get notified about issues?

A Resource groups

B Dashboards

C Workbooks

D Alerts

Alerts notify you when specific conditions in your data occur.

What is a common use of Azure Monitor logs?

A Sending emails automatically

B Visualizing CPU usage in real-time

C Storing detailed event records for troubleshooting

D Creating virtual machines

Logs store detailed event records that help with troubleshooting.

Which of these is NOT a benefit of Azure Monitor?

A Automatically fixing hardware failures

B Collecting telemetry data

C Analyzing application performance

D Setting up alerts

Azure Monitor helps detect issues but does not automatically fix hardware failures.

Azure Monitor can collect data from which environments?

A Only Azure cloud

B Both Azure cloud and on-premises

C Only on-premises servers

D Only third-party clouds

Azure Monitor collects data from both Azure cloud and on-premises environments.

Explain what Azure Monitor is and why it is useful.

Think about how you would explain monitoring to a friend who wants to keep their computer running well.

Describe the difference between metrics and logs in Azure Monitor.

Imagine metrics as a speedometer and logs as a detailed diary.

Practice

1. What is the main purpose of Azure Monitor?

easy

A. To watch cloud resources and keep them healthy

B. To create virtual machines

C. To store large amounts of data

D. To manage user permissions

Solution

1. Step 1: Understand Azure Monitor's role

   Azure Monitor watches cloud resources to ensure they work well and stay healthy.

2. Step 2: Compare options with this role

   Creating virtual machines, storing data, and managing permissions are not the main tasks of Azure Monitor.

3. Final Answer:

   To watch cloud resources and keep them healthy -> Option A

4. Quick Check:

   Azure Monitor = watches resources [OK]

Hint: Azure Monitor = watches and keeps resources healthy [OK]

Common Mistakes:

• Confusing Azure Monitor with storage services
• Thinking it creates virtual machines
• Mixing it up with user management

2. Which of the following is the correct way to enable Azure Monitor for a resource in the Azure portal?

easy

A. Disable all alerts to start Azure Monitor

B. Create a new virtual machine and Azure Monitor is enabled by default

C. Go to the resource, select 'Monitoring', then 'Insights', and enable monitoring

D. Run a PowerShell script to delete monitoring settings

Solution

1. Step 1: Check how to enable monitoring in Azure portal

   Azure Monitor is enabled by going to the resource, selecting 'Monitoring', then 'Insights', and turning it on.

2. Step 2: Eliminate incorrect options

   Creating a VM does not automatically enable Azure Monitor; deleting monitoring or disabling alerts does not enable it.

3. Final Answer:

   Go to the resource, select 'Monitoring', then 'Insights', and enable monitoring -> Option C

4. Quick Check:

   Enable monitoring via Insights in portal [OK]

Hint: Enable monitoring under resource's Insights tab [OK]

Common Mistakes:

• Assuming Azure Monitor is on by default for all resources
• Confusing enabling with disabling alerts
• Thinking deleting settings enables monitoring

3. Consider this Azure Monitor alert rule setup:
Alert when CPU usage > 80% for 5 minutes
What happens if CPU usage spikes to 85% for 3 minutes and then drops to 75%?

medium

A. An alert is triggered immediately when CPU hits 85%

B. No alert is triggered because the high CPU lasted less than 5 minutes

C. An alert triggers after CPU usage drops below 80%

D. The alert triggers only if CPU stays above 90%

Solution

1. Step 1: Understand alert condition timing

   The alert triggers only if CPU usage stays above 80% continuously for 5 minutes.

2. Step 2: Analyze the CPU usage pattern

   The CPU was above 80% for only 3 minutes, then dropped below, so the alert condition is not met.

3. Final Answer:

   No alert is triggered because the high CPU lasted less than 5 minutes -> Option B

4. Quick Check:

   Alert needs 5 minutes above threshold [OK]

Hint: Alert triggers only after condition lasts full time [OK]

Common Mistakes:

• Thinking alert triggers immediately on spike
• Ignoring the 5-minute duration condition
• Confusing threshold values

4. You set up an Azure Monitor alert but it never triggers even when the condition is met. What is a likely cause?

medium

A. Alert rule is disabled or not properly configured

B. Azure Monitor does not support alerts

C. The resource is offline and cannot be monitored

D. Alerts only work during business hours

Solution

1. Step 1: Check alert rule status

   If the alert rule is disabled or misconfigured, it will not trigger even if conditions are met.

2. Step 2: Review other options for correctness

   Azure Monitor supports alerts anytime; resources offline may not send data but usually cause other errors; alerts are not time-limited.

3. Final Answer:

   Alert rule is disabled or not properly configured -> Option A

4. Quick Check:

   Disabled alert rules never trigger [OK]

Hint: Check if alert rule is enabled and correct [OK]

Common Mistakes:

• Assuming Azure Monitor can't alert
• Thinking alerts depend on time of day
• Ignoring alert rule configuration

5. You want to reduce costs but keep monitoring important metrics with Azure Monitor. Which approach is best?

hard

A. Collect all possible data and create alerts for every metric

B. Disable Azure Monitor completely to save money

C. Use Azure Monitor only during peak hours

D. Configure sampling to collect fewer data points and set alerts only on critical metrics

Solution

1. Step 1: Understand cost-saving options in Azure Monitor

   Sampling reduces data volume by collecting fewer points, lowering cost. Alerting only on critical metrics avoids unnecessary alerts.

2. Step 2: Evaluate other options

   Disabling monitoring risks missing issues; collecting all data increases cost; limiting monitoring by time is not supported and risky.

3. Final Answer:

   Configure sampling to collect fewer data points and set alerts only on critical metrics -> Option D

4. Quick Check:

   Sampling + critical alerts = cost saving [OK]

Hint: Use sampling and alert only on key metrics [OK]

Common Mistakes:

• Turning off monitoring completely
• Collecting too much data without filtering
• Assuming monitoring can be time-limited