OpenShift administration 2 (EN)

Description

You will learn how to work with the essential components of the OpenShift infrastructure for its routine operation.

Goals

• Understand the differences between Kubernetes and OpenShift/OKD and utilize OpenShift-specific resources
• Install and manage operators using OLM, including disconnected environments
• Integrate OpenShift with enterprise LDAP and apply RBAC
• Deploy custom SSL/TLS certificates for Ingress Controller and API server
• Design and manage node groups including infra and specialized ones
• Manage persistent storage (PV, PVC, Storage Classes, NFS, iSCSI)
• Run Cluster Monitoring Stack, write PromQL queries and configure alerts
• Apply best practices for operating a production OpenShift/OKD cluster

Target

• OpenShift administrators responsible for platform operations and development
• Platform engineers and SREs
• Architects designing enterprise OpenShift/OKD solutions
• DevOps engineers managing production clusters

Contents

• How OKD/OpenShift extends Kubernetes
• Working with Kustomize, Image Streams, Builds and Templates

• Operator Pattern, Cluster Operators and OLM
• Installation and management of operators including disconnected environments

• Configuring LDAP Identity Provider
• Synchronization of groups and RBAC
• Troubleshooting

• Certificate architecture in OpenShift
• Exchanging Ingress Controller and API server certificates
• Trust in enterprise CA, renewal and troubleshooting

• Machine Config Operator and custom MachineConfigs
• Dedicated infrastructure nodes, specialized HW (GPU)
• Taints, tolerations and node affinity

• Persistent Volumes, PVC and Storage Classes
• NFS, iSCSI and Local Storage Operator
• Dynamic provisioning and storage quotas

• Cluster Monitoring Stack architecture
• Prometheus, PromQL and alerts
• Alertmanager, Grafana and monitoring user-defined projects

Prerequisites

• Completion of OpenShift Administration 1 or equivalent knowledge
• Practical experience with oc and kubectl
• Knowledge of YAML and basic Kubernetes manifests
• Basic knowledge of Linux

Study Materials

Followups