Monitoring with Ambari or Cloudera Manager in Hadoop - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start the Ambari server service.

Hadoop

sudo systemctl [1] ambari-server

Drag options to blanks, or click blank then click option'

Astop

Bstatus

Cstart

Drestart

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'stop' instead of 'start'.

Using 'status' which only shows service state.

To start the Ambari server, use systemctl start ambari-server.

2fill in blank

medium

Complete the command to check the status of Cloudera Manager agent.

Hadoop

sudo service cloudera-scm-agent [1]

Drag options to blanks, or click blank then click option'

Astart

Bstatus

Crestart

Dstop

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'start' or 'restart' instead of 'status'.

The status option shows if the Cloudera Manager agent is running.

3fill in blank

hard

Fix the error in the command to restart Ambari agent.

Hadoop

sudo systemctl [1] ambari-agent

Drag options to blanks, or click blank then click option'

Arestart

Bstart

Cstop

Denable

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'start' alone does not restart if already running.

Using 'enable' only sets service to start on boot.

The restart command stops and then starts the service, applying changes immediately.

4fill in blank

hard

Fill both blanks to create a command that checks the Ambari server logs for errors.

Hadoop

sudo tail -n [1] /var/log/ambari-server/ambari-server.[2]

Drag options to blanks, or click blank then click option'

A100

Berror.log

Ccurrent

D50

Attempts:

3 left

💡 Hint

Common Mistakes

Using too few lines like 50 may miss errors.

Using 'error.log' is not the standard log file name.

The command shows the last 100 lines of the current Ambari server log file.

5fill in blank

hard

Fill all three blanks to create a command that lists all running Cloudera Manager services and filters for 'Active'.

Hadoop

sudo systemctl list-units --type=[1] | grep [2] | grep [3]

Drag options to blanks, or click blank then click option'

Aservice

Bcloudera

CActive

Drunning

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'running' instead of 'Active' for filtering status.

Using wrong unit type like 'socket'.

This command lists all services, filters those related to Cloudera, then shows only those that are active.