book

Operating OpenShift

by Rick Rackow, Manuel Dewald

November 2022

Intermediate to advanced

264 pages

6h 14m

English

O'Reilly Media, Inc.

Book available

Read now

Unlock full access

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

Overview

Kubernetes has gained significant popularity over the past few years, with OpenShift as one of its most mature and prominent distributions. But while OpenShift provides several layers of abstraction over vanilla Kubernetes, this software can quickly become overwhelming because of itsrich feature set and functionality. This practical book helps you understand and manage OpenShift clusters from minimal deployment to large multicluster installations.

Principal site reliability engineers Rick Rackow and Manuel Dewald, who worked together on Red Hat's managed OpenShift offering for years, provide valuable advice to help your teams operate OpenShift clusters efficiently. Designed for SREs, system administrators, DevOps engineers, andcloud architects, Operating OpenShift encourages consistent and easy container orchestration and helps reduce the effort of deploying a Kubernetes platform. You'll learn why OpenShift has become highly attractive to enterprises large and small.