Nagios Core

 20 Minutes
 10 Questions


This test is designed to assess a candidate's knowledge of DevOps, Nagios Core, and the basics of system monitoring. The test will cover topics such as setting up and configuring Nagios Core, understanding the basics of system monitoring, and understanding the principles of DevOps. The test will also include questions on troubleshooting common issues with Nagios Core and understanding how to use it to monitor systems.


Example Question:

Multiple-Choice
 Determine the functionality of this detailed Nagios service definition:

define service{
 use           generic-service
 host_name        mailserver
 service_description   SMTP Queue Length
 check_command      check_smtp_queue!300!500
 max_check_attempts   3
 normal_check_interval  10
 retry_check_interval  2
 notification_interval  60
 notification_period   weekdays
 notification_options  w,c
}


Answers
1. It monitors the SMTP queue length on mailserver, sending notifications for warnings and criticals during weekdays.
2. It checks the SMTP service on mailserver every 10 minutes, retrying every 2 minutes if failed, without notifications.
3. It monitors the mail queue length, sending notifications only for criticals on weekdays.
4. It checks the SMTP queue length on mailserver, retrying every 2 minutes if it exceeds 300 messages, and sends notifications only on weekdays for warnings and criticals.