Troubleshoot Service Failures upon Boot on Linux

15 minutes
  • 3 Learning Objectives

About this Hands-on Lab

Upon boot, the server starts any number of services and service dependencies. Errors in these services’ unit files can cause the server to hang, error out, or otherwise fail to boot in a healthy state. In this lab, you’ll explore a service dependency issue that is causing problems when you attempt to run `pmcd`. _This lab is not approved or sponsored by Red Hat._

Learning Objectives

Successfully complete this lab by achieving the following learning objectives:

Confirm the Issue

Attempt to start the pmcd service, and investigate the error.

Resolve the Problem

Using information uncovered in the previous step, resolve the cyclical dependency.

Start the Services

Start the pmcd service, and confirm that the grafana-server service has also started.

Additional Resources

While attempting to start the pmcd service, you are receiving an error and the service refuses to start. Discover the source of the issue, and then resolve it.

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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