All courses
Resource hub
Featured resource
Forrester Wave Report 2025
Pluralsight named a Leader in the Forrester Wave™

Our tech skill development platform earned the highest scores possible across 11 criteria.

Learn more
Hamburger Icon
  • Labs icon Lab
  • Cloud
Google Cloud Platform icon
Labs

Modifying Runlevels on Linux

A runlevel is a specific mode of operation used by systems that implement System V initialization. In this lab, we are tasked with modifying runlevels for both CentOS and Ubuntu.

Get started Contact sales
Google Cloud Platform icon
Labs

Path Info

Level
Clock icon Intermediate
Duration
Clock icon 30m
Published
Clock icon Oct 23, 2020

Contact sales

By filling out this form and clicking submit, you acknowledge our privacy policy.

Table of Contents

  1. Challenge

    Configure the Runlevels on the CentOS Server

    1. Use the chkconfig command to disable the crond service for runlevels 2 and 4:

      chkconfig --level 24 crond off

    2. Use the chkconfig to enable the httpd service for runlevels 3 and 5:

      chkconfig --level 35 httpd on

  2. Challenge

    Modify the Initialization Script for the Postfix Service on the CentOS Server

    1. Use a text editor to modify the init script for postfix at /etc/rc.d/init.d/postfix with the following changes:

    2. Update this line:

      # chkconfig: 2345 80 30

      To be:

      # chkconfig: 3 78 35

    3. Update this line:

      # Default-Start: 2 3 4 5

      To be:

      # Default-Start: 3

    4. Apply the changes.

    5. Remove the postfix service:

      chkconfig --del postfix

    6. Add the postfix service:

      chkconfig --add postfix

  3. Challenge

    Remove the SysVinit Script Links for the Nginx Service on the Ubuntu server

    1. Use the update-rc.d command to remove init links for nginx:

      update-rc.d nginx remove

  4. Challenge

    Enable the Lighttpd Service for Runlevels 2 and 5 on the Ubuntu server

    1. Use the update-rc.d command to enable lighttpd for runlevels 2 and 5:

      update-rc.d lighttpd enable 2 5

  5. Challenge

    Create the Default SysVinit links for the Bluetooth Service on the Ubuntu server

    1. Use the update-rc.d command to add the defaults for the Bluetooth service:

      update-rc.d bluetooth defaults
Pluralsight Skills - Labs - Pluralsight
Author
Pluralsight Skills

Pluralsight Skills gives leaders confidence they have the skills needed to execute technology strategy. Technology teams can benchmark expertise across roles, speed up release cycles and build reliable, secure products. By leveraging our expert content, skill assessments and one-of-a-kind analytics, keep up with the pace of change, put the right people on the right projects and boost productivity. It's the most effective path to developing tech skills at scale.

What's a lab?

Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.

Provided environment for hands-on practice

We will provide the credentials and environment necessary for you to practice right within your browser.

Guided walkthrough

Follow along with the author’s guided walkthrough and build something new in your provided environment!

Did you know?

On average, you retain 75% more of your learning if you get time for practice.
Ready to get started?
View individual plans View team plans