book

Red Hat RHCE 8 (EX294) Cert Guide

by Sander van Vugt

October 2020

Intermediate to advanced

516 pages

12h 59m

English

Pearson IT Certification

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Goals and MethodsOther ResourcesWho Should Read This Book?How This Book Is OrganizedHow to Use This BookOther FeaturesBook Organization, Chapters, and AppendixesWhere Are the Companion Content Files?
“Do I Know This Already?” QuizFoundation TopicsUnderstanding AutomationUnderstanding Ansible Essential ComponentsUnderstanding Ansible Use CasesSummaryExam Preparation TasksReview All Key TopicsDefine Key Terms
“Do I Know This Already?” QuizFoundation TopicsUnderstanding an Ansible EnvironmentUnderstanding Controller Host RequirementsUnderstanding Installation MethodsConfiguring Managed HostsConfiguring the Ansible UserSummaryExam Preparation TasksReview All Key TopicsMemory TablesDefine Key TermsReview QuestionsEnd-of-Chapter LabLab 2-1
“Do I Know This Already?” QuizFoundation TopicsUnderstanding ProjectsConfiguring Static InventoryWorking with Dynamic InventoryManaging Settings in ansible.cfgSummaryExam Preparation TasksReview All Key TopicsMemory TablesDefine Key TermsReview QuestionsEnd-of-Chapter LabLab 3-1
“Do I Know This Already?” QuizFoundation TopicsUnderstanding Ad Hoc CommandsWorking with ModulesConsulting Module DocumentationRunning Ad Hoc Commands from Shell ScriptsSummaryExam Preparation TasksReview All Key TopicsMemory TablesDefine Key TermsReview QuestionsEnd-of-Chapter LabLab 4-1
“Do I Know This Already?” QuizFoundation TopicsExploring Your First PlaybookWorking with YAMLManaging Multiplay PlaybooksSummaryExam Preparation TasksReview All Key TopicsMemory TablesDefine Key TermsReview QuestionsEnd-of-Chapter LabLab 5-1
“Do I Know This Already?” QuizFoundation TopicsUnderstanding the Use of Variables in Ansible PlaybooksWorking with Ansible FactsWorking with VariablesUsing Vault to Manage Sensitive ValuesCapturing Command Output Using registerSummaryExam Preparation TasksReview All Key TopicsMemory TablesDefine Key TermsReview QuestionsEnd-of-Chapter LabsLab 6-1Lab 6-2
“Do I Know This Already?” QuizFoundation TopicsUsing Loops and ItemsUsing when to Run Tasks ConditionallyUsing HandlersDealing with FailuresSummaryExam Preparation TasksReview All Key TopicsMemory TablesDefine Key TermsReview QuestionsEnd-of-Chapter LabLab 7-1
“Do I Know This Already?” QuizFoundation TopicsUsing Modules to Manipulate FilesManaging SELinux PropertiesUsing Jinja2 TemplatesSummaryExam Preparation TasksReview All Key TopicsMemory TablesDefine Key TermsReview QuestionsExercise AnswersEnd-of-Chapter LabsLab 8-1: Generate an /etc/hosts FileLab 8-2: Manage a vsftpd Service
“Do I Know This Already?” QuizFoundation TopicsUsing Ansible RolesUsing Ansible Galaxy RolesUsing RHEL System RolesSummaryExam Preparation TasksReview All Key TopicsMemory TablesDefine Key TermsReview QuestionsEnd-of-Chapter LabsLab 9-1Lab 9-2
“Do I Know This Already?” QuizFoundation TopicsAdvanced Inventory UsageOptimizing Ansible ProcessingIncluding and Importing FilesSummaryExam Preparation TasksReview All Key TopicsDefine Key TermsReview QuestionsEnd-of-Chapter LabLab 10-1
“Do I Know this Already?” QuizFoundation TopicsManaging Ansible Errors and LogsUsing Modules for Troubleshooting and TestingUsing TagsTroubleshooting Common ScenariosSummaryExam Preparation TasksReview All Key TopicsMemory TablesDefine Key TermsReview QuestionsEnd-of-Chapter LabLab 11-1
“Do I Know This Already?” QuizFoundation TopicsUsing Modules to Manage PackagesUsing Modules to Manage Repositories and SubscriptionsImplementing a Playbook to Manage SoftwareSummaryExam Preparation TasksReview All Key TopicsMemory TablesDefine Key TermsReview QuestionsEnd-of-Chapter LabsLab 12-1Lab 12-2
“Do I Know This Already?” QuizFoundation TopicsUsing Ansible Modules to Manage Users and GroupsManaging SSH ConnectionsManaging Encrypted PasswordsManaging Users Advanced Scenario ExerciseSummaryExam Preparation TasksReview All Key TopicsMemory TablesDefine Key TermsReview QuestionsEnd-of-Chapter LabLab 13-1
“Do I Know This Already?” QuizFoundation TopicsManaging ServicesManaging the Boot ProcessManaging the Boot Process and Services Advanced ExerciseSummaryExam Preparation TasksReview All Key TopicsMemory TablesDefine Key TermsReview QuestionsEnd-of-Chapter LabLab 14-1
“Do I Know This Already?” QuizFoundation TopicsDiscovering Storage-Related FactsManaging Partitions and LVMConfiguring Storage Advanced ExerciseSummaryExam Preparation TasksReview All Key TopicsMemory TablesDefine Key TermsReview QuestionsEnd-of-Chapter LabLab 15-1
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Content preview from Red Hat RHCE 8 (EX294) Cert Guide

Chapter 11

Troubleshooting Ansible

This chapter covers the following subjects:

Managing Ansible Errors and Logs
Using Modules for Troubleshooting and Testing
Using Tags
Troubleshooting Common Scenarios

The following RHCE exam objectives are covered in this chapter:

Create Ansible plays and playbooks
- Configure error handling

“Do I Know this Already?” Quiz

The “Do I Know This Already?” quiz allows you to assess whether you should read this entire chapter thoroughly or jump to the “Exam Preparation Tasks” section. If you are in doubt about your answers to these questions or your own assessment of your knowledge of the topics, read the entire chapter. Table 11-1 lists the major headings in this chapter and their corresponding “Do I Know This ...