Restore Changed System Files on Linux

15 minutes
  • 3 Learning Objectives

About this Hands-on Lab

Our Linux systems can serve a number of purposes and host a number of applications, services, and general infrastructure. Regardless of purpose, however, we will be working with files, most of which dictate whether the prior will work — or work the way we expect. In this lab, we explore methods of restoring these changed files when necessary.

_This course is not approved or sponsored by Red Hat._

Learning Objectives

Successfully complete this lab by achieving the following learning objectives:

Replicate the Issue

Attempt to start the mysqld service.

Investigate the Source of the Issues and Resolve

Use rpm and dnf tools to discover the issue with the changed files and restore them.

Confirm the Issue Resolution

Start the mysqld service.

Additional Resources

The mysqld service does not start. Review its related service and configuration files and restore them so Mysql returns to a working state.

This course is not approved or sponsored by Red Hat.

What are Hands-on Labs

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.

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