Monitoring with Ambari or Cloudera Manager in Hadoop - Practice Problems & Coding Challenges

Challenge - 5 Problems

💻 Command Output

intermediate

Ambari Service Status Check Output

You run the command ambari-server status on your Hadoop cluster node. What is the expected output if Ambari Server is running correctly?

Hadoop

ambari-server status

A Ambari Server running

B Ambari Server starting

C Error: Ambari Server not found

D Ambari Server stopped

💡 Hint

Think about what a status command shows when a service is active.

The command ambari-server status returns 'Ambari Server running' when the server is active and working properly.

🧠 Conceptual

intermediate

Cloudera Manager Alert Types

Which of the following is NOT a standard alert type monitored by Cloudera Manager?

A Service Health Alerts

B User Login Frequency Alerts

C CPU Usage Alerts

D Disk Space Usage Alerts

💡 Hint

Consider what system metrics Cloudera Manager typically monitors.

Cloudera Manager monitors system and service health metrics like CPU, disk space, and service status. User login frequency is not a standard alert type.

❓ Troubleshoot

advanced

Ambari Agent Not Reporting

You notice that one node's Ambari Agent is not reporting metrics to the Ambari Server. Which command helps you restart the Ambari Agent on that node?

A sudo service ambari-agent restart

B sudo ambari-agent restart

C ambari-agent --restart

D restart ambari-agent

💡 Hint

Think about how services are restarted on Linux systems.

The correct command to restart Ambari Agent on most Linux systems is 'sudo service ambari-agent restart'.

🔀 Workflow

advanced

Cloudera Manager Alert Configuration Steps

Put the following steps in the correct order to configure a new alert in Cloudera Manager.

A 2,1,3,4

B 3,1,2,4

C 1,2,3,4

D 1,3,2,4

💡 Hint

Think about the logical order from UI navigation to saving settings.

First, you open the Alerts section, then select the target service/host, define conditions, and finally save the alert.

✅ Best Practice

expert

Best Practice for Monitoring Hadoop with Ambari or Cloudera Manager

Which practice is considered best for ensuring reliable monitoring and alerting in a Hadoop cluster managed by Ambari or Cloudera Manager?

A Only monitor NameNode and DataNode services, ignoring other components.

B Disable automatic alert notifications to reduce noise.

C Regularly update monitoring agents and server components to latest stable versions.

D Manually check logs daily instead of relying on automated alerts.

💡 Hint

Think about how to keep monitoring tools effective and secure.

Keeping monitoring agents and servers updated ensures compatibility, security, and access to latest features and fixes.