Lab
A Cloud Guru

Troubleshooting a Containerized Application

In this lab scenario, a containerized application is not working properly and needs to be fixed. Using the various logs available to us, we will find the issue, correct it, and start the application. *This lab is not approved or sponsored by Red Hat.* Due to limitations in the A Cloud Guru Cloud Playground environment, we are unable to provide a hands-on experience for this lab. 1. To complete this lab, you must first register for a Red Hat Developer login on the ***[Red Hat login page](https://developers.redhat.com/login)***. 2. Once registered, you may complete the lab steps using one of the following methods: * Download ***[Red Hat's CodeReady Containers](https://cloud.redhat.com/openshift/install/crc/installer-provisioned)*** and install them locally on your own system. * Log in to your Red Hat Developer account and use a ***[Red Hat-provided OpenShift sandbox](https://developers.redhat.com/products/codeready-containers/overview)***. Solutions for CodeReady Containers and the Red Hat OpenShift sandbox are available in this lab.

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Path Info

Level

Intermediate

Duration

30m

Published

Feb 11, 2022

Challenge

Create the New Project

Create a new project with the name bad-mysql.

Note: This section only applies to local users of the OpenShift environment. Remote access users should skip this section.
Challenge

Replicate the Issue with the Application

Replicate the problem by creating a new MySQL application with the following command: oc new-app --name=secret-db mysql mysql_root_pass=supersecret -l app=secret-db
Challenge

Troubleshoot and Fix the Application
- Review the logs for the failing application to find the issue.
- Fix the issue that is causing the application to fail.
Challenge

Verify the Application Is Running

Connect to the new application pod and verify the MySQL instance is working.

Author

A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

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.