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This post is from the XebiaLabs blog and has not been updated since the original publish date.

Last Updated Apr 19, 2015 — DevOps Expert

Setup Openshift Environment with XL Release


One of the important things when starting to work in an OpenShift environment is to setup Domains, Applications and Gears. OpenShift provides a set of REST services that can be used to setup domains, applications, gears, etc and also deploy, configure applications. A lot of companies are now moving ahead on the path of using software on the cloud solutions and OpenShift is a popular one among developers who want to quickly deploy applications in lower environments for testing /showcase and tear down after use. XL Release is used for an overall release management and automation of all those activities that can truly be a machine interaction. This article shows XL Release's Webhook capability to interact with OpenShift APIs to create a domain and setup gears. Here's how you can go about it

  • Open a browser and login into you XL Release instance.
  • Create a new template
  • Create a new phase
  • You can create the first task as JSON Webhook
    • Task Name : Create Domain
    • URL : Openshift API
    • Method : POST
    • HTTP Body : contains domain name as JSON string
    • JSON Path Expression 1 : JSON Expression to parse the response from
    • Result 1 : ${appcreate_url} to Capture the JSON Expression 1 Value from captured response
Screen Shot 2015-01-28 at 11.50.32 AMScreen Shot 2015-01-28 at 11.50.43 AM
  • Create the second step as another JSON Webhook
    • Task Name : Create Application and Cartridges
    • URL : ${appcreate_url} is the value captured for the domain created from previous step
    • Method : POST
    • HTTP Body : contains application name and cartridges as JSON string
    • JSON Path Expression 1 : JSON Expression to parse the response from
    • Result 1 : ${app_url} to Capture the JSON Expression 1 Value from captured response
Screen Shot 2015-01-28 at 11.50.52 AM

Screen Shot 2015-01-28 at 11.51.01 AM

  • Create a final third step as Script Step
    • Simple python code to print the captured value of ${app_url} pointing to the newly setup containers
Screen Shot 2015-01-28 at 11.51.08 AM
  • This is how it should look after all three have been created
Screen Shot 2015-01-28 at 11.50.19 AM
  • Now we can create a new Release from this Template and start the release
  • This is how it looks after a successful run
Screen Shot 2015-01-28 at 11.53.27 AM
  •  Looking into the output of each of the steps
    • Step 1 - Create Domain -  Output shows the new domain created under open shift rhcloud
Screen Shot 2015-01-28 at 11.53.37 AM
    • Step 2 - Create Application - Output shows the new application created under domain
Screen Shot 2015-01-28 at 11.53.51 AM
    • Step 3 - Print Information - Finally printing the URL
Screen Shot 2015-01-28 at 11.53.59 AM    This is how you can make use of the XL Release web hook capability to connect and create a workflow for setting up your OpenShift cloud environment and do much more. Enjoy!!

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