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RED HAT OPENSHIFT ADMINISTRATION I (DO280)

Introduction
  • Red Hat Openshift Administration I (DO280) is used for system administrators how to install, configure, and manage Red Hat OpenShift Container Platform clusters.
Objectives
  • Install, configure, monitor, and manage an OpenShift cluster.
  • Install, configure, and manage persistent storage for an OpenShift cluster.
  • Deploy applications on an OpenShift cluster using Source-to-Image (S2I) builds.
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Course Overview
  • OpenShift is a containerized application platform that allows enterprises to manage container deployments and scale their applications using Kubernetes. OpenShift provides predefined application environments and builds upon Kubernetes to provide support for DevOps principles such as reduced time to market, infrastructure as code, continuous integration (CI), and continuous delivery (CD).
Audience
  • Red Hat System administrators
  • Architects and developers who want to install and configure OpenShift
Prerequisites
  • RHCSA certification or equivalent Linux administration experience is required.
  • Introduction to Containers, Kubernetes, and Red Hat OpenShift (DO180) is highly recommended, or equivalent experience with containers, Kubernetes, and OpenShift basics
  • System Administrators to know including,
    • Installing Linux Operating System and entry level commands called (touch,cat,cd,pwd,ls,history,vim,cp,mv)
    • Basic yaml and json code's

Topics In RED HAT OPENSHIFT ADMINISTRATION I (DO280)

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1 . INTRODUCING RED HAT OPENSHIFT CONTAINER PLATFORM
2 . INSTALLING OPENSHIFT CONTAINER PLATFORM

3 . DESCRIBING AND EXPLORING OPENSHIFT NETWORKING CONCEPTS
  • Describing OpenShift Implementation of software-defined networking (SDN).
  • OpenShift Network Topology.
  • Getting Traffic into and out of the Cluster ( HostPort/HostNetwork,NodePort ).
  • creating routes and routing options and types ( Edge Termination,Pass-through Termination,Re-encryption Termination ).
  • Monitoring Routes.
4 . EXECUTING COMMANDS
  • Accessing Resources from the Managed OpenShift Instance with CLI ( nodes,services,pods,projects,deploymentConfigs,users ).
  • OpenShift Resource Types ( Container,Image,Pod,Label,Volume,Node,Service,Route,Replication Controller,Dc,Bc,Build,s2i,Secret,Project ).
  • Creating Applications Using oc new-app.
  • Troubleshooting Common Issues.
  • OpenShift Troubleshooting Commands.
5 . CONTROLLING ACCESS TO OPENSHIFT RESOURCES
  • Securing Access to OpenShift Resources.
  • Type of users.
  • Managing User Membership with CLI and GUI.
  • Security Context Constraints (SCCs).
  • Authentication and Authorization Layers.
  • Authentication Types ( Basic Authentication (Remote),Request Header Authentication,Keystone Authentication,LDAP Authentication,etc..,)
  • Managing Sensitive Information with Secrets.
  • OpenShift Container Platform Authorization.
  • OpenShift and SELinux.
6 . ALLOCATING PERSISTENT STORAGE
  • Providing Persistent Storage for an Application ( PV and PVC ).
  • OpenShift-supported Plug-ins for Persistent Storage ( NFS,GlusterFS,OpenStack Cinder,Ceph RBD,AWS Elastic Block Store (EBS),iSCSI).
  • Creating PVs and PVC Resources.
  • Using Supplemental Groups for File-based Volumes.
  • Using FS Groups for Block Storage-based Volumes.
  • SELinux and Volume Security.
  • Configuring the OpenShift Internal Registry for Persistence.
7 . MANAGING APPLICATION DEPLOYMENTS
  • Replication Controllers.
  • Changing the Number of Replicas for an Application.
  • Autoscaling Pods.
  • Introduction to the OpenShift Scheduler Algorithm.
  • Unschedulable Nodes.
  • Managing Images, Image Streams, and Templates.
  • Instant App and QuickStart Templates.
8 . INSTALLING AND CONFIGURING THE METRICS SUBSYSTEM
  • Describing the Architecture of the Metrics Subsystem.
  • Metrics Subsystem Components (Heapster,Hawkular Metrics,Hawkular Agent,Cassandra).
  • Accessing Heapster and Hawkular.
  • Providing Persistent Storage for Cassandra.
  • Deploying the Metrics Subsystem.
  • Verifying the Deployment of the Metrics Subsystem
  • Ansible Variables for the Metrics Subsystem.
  • Uninstalling the Metrics Subsystem.
9 . MANAGING AND MONITORING OPENSHIFT CONTAINER PLATFORM
  • Limiting Resource Usage and Resource Requests and Limits for Pods.
  • Managing Quotas.
  • Upgrading OpenShift Container Platform.
  • Performing an Automated Cluster Upgrade.
  • Monitoring Applications with Probes in CLI and GUI.
  • Monitoring Resources with the Web Console.
  • Managing Metrics with Hawkular.
10 . COMPREHENSIVE REVIEW: RED HAT OPENSHIFT ADMINISTRATION I
Outcome


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