Deploying to Openshift

Copyright Table of Contents Preface Who Should Read This Book Why I Wrote This Book Online Resources Conventions Used in This Book O’Reilly Safari How to Contact Us Acknowledgments Chapter 1. The OpenShift Container Platform The Role of Containers Orchestrating at Scale Containers as a Service Platform as a Service Deploying Your Application Chapter 2. Running an OpenShift Cluster Using OpenShift Online Installing OpenShift Origin Launching Using Minishift Running oc cluster up Summary Chapter 3. Accessing the OpenShift Cluster Using the Web Console Using the Command Line Using the OpenShift REST API Summary Chapter 4. Adding Applications to a Project The Role of a Project Creating a Project Adding a Collaborator Deploying Applications Deploying from the Catalog Deploying an Image Deploying a Set of Resources Summary Chapter 5. Deploying Applications from Images Deploying Your First Image Scaling Up the Application Runtime Configuration Deleting the Application Deploying Using the Web Console Importing an Image Pushing to the Registry Images and Security Summary Chapter 6. Building and Deploying from Source The Source Build Strategy Deploying from Source Creating a Separate Build Triggering a New Build Building from a Local Source Binary Input Builds Testing the Container Image Build and Runtime Configuration Summary Chapter 7. Building an Image from a Dockerfile The Docker Build Strategy Security and Docker Builds Creating the Build Deploying the Image Build and Runtime Configuration Using an Inline Dockerfile Summary Chapter 8. Understanding Source-to-Image Builders The Source-to-Image Project Building the Application Image Assembling the Source Code Creating an S2I Builder Image Building the S2I Builder Image Using the S2I Builder with OpenShift Adding an S2I Builder to the Catalog Summary Chapter 9. Customizing Source-to-Image Builds Using Environment Variables Overriding the Builder Scripts Read-Only Code Repositories Overriding the Runtime Image Updating the Image Metadata Summary Chapter 10. Using Incremental and Chained Builds Faster Builds Using Caching Using Incremental Builds Saving Artifacts from a Build Restoring the Build Artifacts Enabling Incremental Builds Using Chained Builds Summary Chapter 11. Webhooks and Build Automation Using a Hosted Git Repository Accessing a Private Git Repository Adding a Repository Webhook Customized Build Triggers Summary Chapter 12. Configuration and Secrets Passing Environment Variables Working with Configuration Files Handling of Secret Information Deleting Configuration and Secrets Summary Chapter 13. Services, Networking, and Routing Containers and Pods Services and Endpoints Connecting Between Projects Creating External Routes Using Secure Connections Internal and External Ports Exposing Non-HTTP Services Local Port Forwarding Summary Chapter 14. Working with Persistent Storage Types of Persistent Storage Claiming a Persistent Volume Unmounting a Persistent Volume Reusing a Persistent Volume Claim Sharing Between Applications Sharing Between Containers Deleting a Persistent Volume Copying Data to a Volume Summary Chapter 15. Resource Quotas and Limits What Is Managed by Quotas Quotas versus Limit Ranges Requests Versus Limits Resource Requirements Overriding Build Resources Summary Chapter 16. Monitoring Application Health The Role of a Readiness Probe The Role of a Liveness Probe Using an HTTP Request Using a Container Command Using a Socket Connection Probe Frequency and Timeouts Summary Chapter 17. Application Lifecycle Management Deployment Strategies Rolling Deployment Recreate Deployment Custom Deployments Container Runtime Hooks Init Containers Summary Chapter 18. Logging, Monitoring, and Debugging Viewing the Build Logs Viewing Application Logs Monitoring Resource Objects Monitoring System Events Viewing Container Metrics Running an Interactive Shell Debugging Startup Failures Summary Afterword What Was Covered Final Words Index About the Author Colophon Get an in-depth tour of OpenShift, the container-based software deployment and management platform from Red Hat that provides a secure multi-tenant environment for the enterprise. This practical guide describes in detail how OpenShift, building on Kubernetes, enables you to automate the way you create, ship, and run applications in a containerized environment.Author Graham Dumpleton provides the knowledge you need to make the best use of the OpenShift container platform to deploy not only your cloud-native applications, but also more traditional stateful applications. Developers and administrators will learn how to run, access, and manage containers in OpenShift, including how to orchestrate them at scale.Build application container images from source and deploy themImplement and extend application image buildersUse incremental and chained builds to accelerate build timesAutomate builds by using a webhook to link OpenShift to a Git repositoryAdd configuration and secrets to the container as project resourcesMake an application visible outside the OpenShift clusterManage persistent storage inside an OpenShift containerMonitor application health and manage the application lifecycleThis book is a perfect follow-up to OpenShift for Developers: A Guide for Impatient Beginners (O'Reilly). This book is intended for developers who are evaluating OpenShift, or have already decided to use it, and who seek a more in-depth knowledge of the core features of OpenShift that are used to deploy applications. It will also be of interest to administrators who are managing an OpenShift cluster and who need to provide assistance to developers using the platform.