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  • Book Overview & Buying OPENSHIFT COOKBOOK
  • Table Of Contents Toc
OPENSHIFT COOKBOOK

OPENSHIFT COOKBOOK

By : Gulati
3.8 (6)
Buy this Book
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OPENSHIFT COOKBOOK

OPENSHIFT COOKBOOK

3.8 (6)
By: Gulati
Buy this Book

Overview of this book

If you are a web application developer who wants to use the OpenShift platform to host your next big idea but are looking for guidance on how to achieve this, then this book is the first step you need to take. This is a very accessible cookbook where no previous knowledge of OpenShift is needed.
Table of Contents (14 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Getting Started with OpenShift
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1. Getting Started with OpenShift
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A brief introduction into OpenShift
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Creating an OpenShift Online account
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Creating OpenShift domains using the web console
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Creating a WordPress application using the web console
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Uploading SSH keys using the web console
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Working with the SSH key passphrases
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Cloning the application to the local machine
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Deploying your first change
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Checking the application's gear quota and limits
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Installing the OpenShift rhc command-line client
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Setting up an OpenShift account using rhc
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Enabling the autocomplete feature in an rhc command-line client
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Viewing the account details using rhc
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Specifying a different OpenShift server hostname
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Updating rhc
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2. Managing Domains
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2. Managing Domains
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Introduction
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Creating a domain using rhc
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Renaming a domain using rhc
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Viewing domain details using rhc
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Adding viewer members to a domain using rhc
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Adding an editor member to a domain using rhc
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Adding an admin member to a domain using rhc
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Viewing all the members in a domain using rhc
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Removing members from a domain using rhc
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Restricting gear sizes for a domain using rhc
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Leaving a domain using rhc
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Deleting a domain using rhc
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3. Creating and Managing Applications
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3. Creating and Managing Applications
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Introduction
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Creating an OpenShift application using the rhc command-line client
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Specifying your own template Git repository URL
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Starting/stopping/restarting an application
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Adding and managing add-on cartridges
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Adding a cron cartridge to an application
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Using downloadable cartridges with OpenShift applications
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Viewing application details
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Cloning the application Git repository using rhc
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SSH into the application gear using rhc
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Running a command in the application's SSH session using rhc
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Setting application-specific environment variables
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Taking and restoring application backups
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Tracking and rolling back application deployments
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Configuring the default Git branch for deployment
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Doing manual deployments
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Configuring and doing binary deployments
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Using your own custom domain name
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Cleaning up the application
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Deleting the application
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4. Using MySQL with OpenShift Applications
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4. Using MySQL with OpenShift Applications
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Introduction
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Adding a MySQL cartridge to your application
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Adding a phpMyAdmin cartridge to your application
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Accessing a MySQL database from your local machine
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Connecting to a MySQL cartridge from your local machine using MySQL Workbench
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Updating the MySQL max connections setting
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Updating the MySQL configuration settings
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Performing scheduled MySQL database backups
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Using an Amazon RDS MySQL DB instance with OpenShift
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5. Using PostgreSQL with OpenShift Applications
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5. Using PostgreSQL with OpenShift Applications
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Introduction
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Adding the PostgreSQL cartridge to your application
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Accessing the PostgreSQL cartridge from your local machine
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Connecting to the PostgreSQL cartridge using pgAdmin from your local machine
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Updating the PostgreSQL max_connections setting
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Using the .psqlrc configuration file to configure the OpenShift application psql shell
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Performing scheduled PostgreSQL database backups
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Using EnterpriseDB PostgreSQL Cloud Database with OpenShift
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Installing PostgreSQL extensions
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6. Using MongoDB and Third-party Database Cartridges with OpenShift Applications
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6. Using MongoDB and Third-party Database Cartridges with OpenShift Applications
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Introduction
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Adding a MongoDB cartridge to your application
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Adding a RockMongo cartridge to your application
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Accessing a MongoDB cartridge from your local machine
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Connecting to a MongoDB cartridge using Robomongo from your local machine
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Enabling the MongoDB cartridge REST interface
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Performing scheduled MongoDB database backups
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Using MongoLab MongoDB-as-a-Service with OpenShift
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Adding a MariaDB cartridge to your application
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Adding a Redis cartridge to your application
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7. OpenShift for Java Developers
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7. OpenShift for Java Developers
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Introduction
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Creating and deploying Java EE 6 applications using the JBoss EAP and PostgreSQL 9.2 cartridges
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Configuring application security by defining the database login module in standalone.xml
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Installing modules with JBoss cartridges
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Managing JBoss cartridges using the management web interface and CLI
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Creating and deploying Spring applications using the Tomcat 7 cartridge
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Taking thread dumps of Java cartridges
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Choosing between Java 6 and Java 7
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Enabling hot deployment for Java applications
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Skipping the Maven build
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Forcing a clean Maven build
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Overriding the default Maven build command
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Installing the JAR file not present in the Maven central repository
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Developing OpenShift Java applications using Eclipse
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Using Eclipse System Explorer to SSH into the application gear
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Debugging Java applications in the Cloud
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8. OpenShift for Python Developers
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8. OpenShift for Python Developers
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Introduction
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Creating your first Python application
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Managing Python application dependencies
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Creating and deploying Flask web applications using Python and PostgreSQL cartridges
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Enabling hot deployment for Python applications
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Forcing a clean Python virtual environment
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Accessing an application's Python virtual environment
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Using Gevent with Python applications
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Installing a custom Python package
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Using the .htaccess file to configure Apache
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9. OpenShift for Node.js Developers
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9. OpenShift for Node.js Developers
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Introduction
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Creating your first Node.js application
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Configuring Node supervisor options
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Managing Node.js application dependencies
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Using the use_npm marker
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Enabling hot deployment for Node.js applications
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Creating and deploying Express web applications using Node.js and MongoDB cartridges
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Working with Web Sockets
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Using CoffeeScript with OpenShift Node.js applications
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10. Continuous Integration for OpenShift Applications
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10. Continuous Integration for OpenShift Applications
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Introduction
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Adding Jenkins CI to your application
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Increasing the slave idle timeout
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Installing Jenkins plugins
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Using Jenkins to build projects hosted on GitHub
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Creating a Jenkins workflow for your OpenShift applications
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Upgrading Jenkins to the latest version
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11. Logging and Scaling Your OpenShift Applications
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11. Logging and Scaling Your OpenShift Applications
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Introduction
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Viewing application logs
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Working with JBoss application logs
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Enabling JBoss access logs
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Working with Tomcat application logs
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Working with Python application logs
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Creating scalable applications
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Configuring a different health check URL for HAProxy
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Configuring HAProxy to use a different balance algorithm
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Creating scalable apps from nonscalable apps
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Enabling manual scaling with marker files
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A. Running OpenShift on a Virtual Machine
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A. Running OpenShift on a Virtual Machine
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Index
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Index

Setting up an OpenShift account using rhc

In the Installing the OpenShift rhc command-line client recipe, you learned how to install the rhc command-line client. After installation, the first operation you have to perform is to set up the OpenShift account. In this recipe, you will learn how to set up your account using rhc.

Getting ready

To complete this recipe, you will need to have rhc installed on your machine. Refer to the Installing the OpenShift rhc command-line client recipe for instructions.

How to do it…

To set up an OpenShift account, open a command-line terminal and run the following command:

$ rhc setup

How it works…

Before you can use the rhc client to work with OpenShift, you have to set up the account.

The setup command does the following:

  1. It first asks you to provide your OpenShift credentials to authenticate with openshift.redhat.com.
  2. After successful authentication, rhc asks whether it should create an authorization token. An authorization token allows you to access the OpenShift server without entering the password with every command. It stores the token in the .openshift folder under the user's home directory. By default, the token is valid for 30 days, which means that after this you have to authenticate it again.
  3. Next, the setup command creates a file called express.conf in the .openshift folder under the user's home directory. The express.conf file stores the basic configuration required by rhc such as the OpenShift server location, your OpenShift username, and whether or not to create and use authorization tokens.
  4. If no SSH key exists in the .ssh folder at ~/.ssh, then the rhc setup command will generate a new key pair using the ssh-keygen utility.
  5. After generating the new SSH key pair, rhc will upload the public SSH key to the OpenShift server. OpenShift copies the public key into an authorization file on the application gear called authorized_keys at ~/.ssh/authorized_keys. In the Uploading SSh keys using the web console recipe, you uploaded the public SSH key using the web console. It will prompt you to provide the name of the key or use the default name generated by the setup command.
  6. Next, rhc checks if Git has been installed. The rhc setup command will run a simple check against your local configuration and credentials to confirm that the configurations have been completed. It will also run a series of tests to check whether ssh has been configured properly and whether your system can communicate with OpenShift servers.
  7. Finally, rhc asks the user to create a domain if one is not already created. In the Creating OpenShift domains using the web console recipe, you created the domain using the web console.

There's more…

You can run the rhc setup command anytime while working with OpenShift. Every time you run the rhc setup command, it will use the configuration properties defined in the express.conf file. If you want to generate a new, clean configuration, you can use the --clean option. This will run the setup command again, ignoring any saved configuration options stored in express.conf:

$ rhc setup --clean

See also

  • The Enabling the autocomplete feature in an rhc command-line client recipe
  • The Viewing the account details using rhc recipe
  • The Specifying a different OpenShift server hostname recipe
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