book

Certified Kubernetes Application Developer (CKAD) Study Guide

Name: Certified Kubernetes Application Developer (CKAD) Study Guide
Author: Benjamin Muschko
ISBN: 9781492083733

by Benjamin Muschko

February 2021

Intermediate to advanced

188 pages

4h 23m

English

O'Reilly Media, Inc.

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Preface
Who This Book Is ForWhat You Will LearnConventions Used in This BookUsing Code ExamplesO’Reilly Online LearningHow to Contact UsAcknowledgments
1. Exam Details and Resources
Exam ObjectivesCurriculumCore ConceptsConfigurationMulti-Container PodsObservabilityPod DesignServices & NetworkingState PersistenceExam Environment and TipsCandidate SkillsTime ManagementCommand Line Tips and TricksSetting a Context and NamespaceUsing an Alias for kubectlInternalize Resource Short NamesDeleting Kubernetes ObjectsFinding Object InformationDiscovering Command OptionsPracticing and Practice ExamsSummary
2. Core Concepts
Kubernetes PrimitivesUsing kubectl to Interact with the Kubernetes ClusterObject ManagementImperative ApproachDeclarative ApproachHybrid ApproachWhich Approach to Use?Other Notable CommandsUnderstanding PodsContainerization ProcessContainer ConceptsExample: Containerizing a Java-Based ApplicationCreating PodsListing PodsPod Life Cycle PhasesRendering Pod DetailsAccessing Logs of a PodExecuting a Command in ContainerDeleting a PodConfiguring PodsDeclaring Environment VariablesDefining a Command with ArgumentsUnderstanding NamespacesListing NamespacesCreating and Using a NamespaceDeleting a NamespaceSummaryExam EssentialsSample Exercises
3. Configuration
Defining and Consuming Configuration DataCreating a ConfigMapConsuming a ConfigMap as Environment VariablesMounting a ConfigMap as VolumeCreating a SecretConsuming a Secret as Environment VariablesMounting a Secret as VolumeUnderstanding Security ContextsUnderstanding Resource BoundariesCreating a ResourceQuotaExploring ResourceQuota EnforcementUnderstanding Service AccountsCreating and Assigning Custom Service AccountsSummaryExam EssentialsSample Exercises
4. Multi-Container Pods
Defining Multiple Containers in a PodInit ContainersThe Sidecar PatternThe Adapter PatternThe Ambassador PatternSummaryExam EssentialsSample Exercises
5. Observability
Understanding Health ProbingReadiness ProbeLiveness ProbeStartup ProbeDebugging in KubernetesTroubleshooting PodsOpening an Interactive ShellUsing an Ephemeral ContainerTroubleshooting ServicesMonitoringSummaryExam EssentialsSample Exercises
6. Pod Design
Understanding LabelsDeclaring LabelsInspecting LabelsModifying Labels for a Live ObjectUsing Label SelectorsLabel Selection from the Command LineLabel Selection in a ManifestUnderstanding AnnotationsDeclaring AnnotationsInspecting AnnotationsModifying Annotations for a Live ObjectUnderstanding DeploymentsCreating DeploymentsListing DeploymentsRendering Deployment DetailsRolling Out a New RevisionRolling Back to a Previous RevisionManually Scaling a DeploymentAutoscaling a DeploymentHorizontal Pod AutoscalerUnderstanding JobsCreating and Inspecting JobsJob Operation TypesRestart BehaviorRestarting the Container on FailureStarting a New Pod on FailureUnderstanding CronJobsCreating and Inspecting JobsConfiguring Retained Job HistorySummaryExam EssentialsSample Exercises
7. Services & Networking
Understanding ServicesService TypesCreating ServicesListing ServicesRendering Service DetailsPort MappingAccessing a Service with Type ClusterIPAccessing a Service with Type NodePortDeployments and ServicesUnderstanding Network PoliciesCreating Network PoliciesListing Network PoliciesRendering Network Policy DetailsIsolating All Pods in a NamespaceRestricting Access to PortsSummaryExam EssentialsSample Exercises
8. State Persistence
Understanding VolumesVolume TypesCreating and Accessing VolumesUnderstanding Persistent VolumesStatic Versus Dynamic ProvisioningCreating PersistentVolumesCreating PersistentVolumeClaimsMounting PersistentVolumeClaims in a PodSummaryExam EssentialsSample Exercises
Answers to Review Questions
Chapter 2, Core ConceptsChapter 3, ConfigurationChapter 4, Multi-Container PodsChapter 5, ObservabilityChapter 6, Pod DesignChapter 7, Services and NetworkingChapter 8, State Persistence

Index
About the Author

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Certified Kubernetes Application Developer (CKAD) Study Guide

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