book

Operating OpenShift

by Rick Rackow, Manuel Dewald

November 2022

Intermediate to advanced

264 pages

6h 14m

English

O'Reilly Media, Inc.

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Conventions Used in This BookUsing Code ExamplesO’Reilly Online LearningHow to Contact UsAcknowledgments
Traditional Operations TeamsHow Site Reliability Engineering HelpsOpenShift as a Tool for Site Reliability EngineersIndividual Challenges for SRE Teams
OKD, OCP, and Other ConsiderationsOKDOCPOSD, ROSA, and AROLocal Clusters with OpenShift LocalPlanning Cluster SizeInstance Sizing RecommendationsNode Sizing RecommendationsMaster Sizing RecommendationsInfra NodesBasic OpenShift InstallationsInstaller-Provisioned InfrastructureSelf-Provisioned InfrastructureSummary
Deploying CodeDeploying Existing Container ImagesDeploying Applications from Git RepositoriesAccessing Deployed ServicesAccessing Services from Other PodsDistribution of RequestsExposing ServicesRoute by Auto-generated DNS NamesRoute by PathExternal Load BalancersSecuring Services with TLSSpecifying TLS CertificatesRedirecting Traffic to TLS RouteLet’s Encrypt Trusted CertificatesEncrypted Communication to the ServiceSummary
Cluster AccessRole-Based Access ControlRoles and ClusterRolesRoleBindings and ClusterRoleBindingsCLIServiceAccountsThreat ModellingWorkloadsSummary
OpenShift Image BuildsDocker BuildSource to Image (S2I) BuildCustom S2I ImagesRed Hat OpenShift PipelinesOverviewInstall Red Hat OpenShift PipelinesSetting Up the PipelineTurning the Pipeline into Continuous IntegrationSummary
Cluster Monitoring OperatorPrometheus OperatorUser Workload MonitoringVisualizing MetricsConsole DashboardsUsing GrafanaSummary
Service Oriented MonitoringService Level IndicatorsService Level ObjectivesToolsLoggingClusterLoggingLog ForwardingLokiVisualizationInstallationCreating a Grafana InstanceData SourceDashboardsSummary
Recurring Operations TasksApplication UpdatesCertificate RenewalsOpenShift UpdatesBackupsAutomating Recurring Operations TasksPersistenceCreating SnapshotsUsing CronJobs for Task AutomationCluster ConfigurationManage Cluster Configuration with OpenShift GitOpsInstalling OpenShift GitOpsManaging Configuration with OpenShift GitOpsManaging Configuration of Multiple Clusters with OpenShift GitOpsSummary
Operator SDKOperator DesignBootstrapping the OperatorSetting Up a CA Directory for DevelopmentDesigning the Custom Resource DefinitionInstalling the CustomResourceDefinitionLocal Operator DevelopmentThe Reconcile FunctionDeploying the OperatorCreating and Updating OpenShift ResourcesSpecifying RBAC PermissionsRouting Traffic to the OperatorAdding Additional ControllersUpdating Resource StatusSummary

Cluster LifecycleCluster ConfigurationLoggingMonitoringAlertingAutomationOn CallPrimary On CallBackup On CallShift RotationTicket QueueIncident ManagementWhen to Declare an IncidentInform the CustomerDefine RolesIncident TimelineDocument the ProcessPostmortemAccessing OpenShift ClustersThe Stage Is Yours

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About the Authors

Rick Rackow is a seasoned professional who has worked on cloud and container adoption throughout his career. As Site Reliability Engineer on Red Hat’s OpenShift Dedicated team, Rick manages and maintains countless OpenShift clusters at scale and ensures their reliability every day by developing and following the best practices the reader will learn in this book.

Manuel Dewald has worked as a site reliability engineer at Red Hat since 2019. In his role, he’s keeping the lights on for OpenShift clusters atop of the major public clouds.

Previously, he worked as a software engineer, participating in DevOps practices in different development teams. With all the challenges of this setup, he decided to change to a role focused on operating software, while keeping the focus on software engineering to solve operations challenges.

He’s passionate about open source software and good software engineering practices. From time to time, you can find him complaining about missing tests even on the smallest projects, which are solving only a little pain of the operations team.

Manuel speaks at conferences and meetups about utilizing the OpenShift build infrastructure, best practices for implementing Kubernetes operators, and agile practices in SRE teams. He writes blog posts about Kubernetes operators, agile practices, and Raspberry Pi projects on https://blog.redhat.com and https://opensource.com.