OCP4 Install config helper

The idea of the OCP4 install config helper is simply to show how to automate the steps of customizing your install config. This is a POC tool and not a finished product. This helper also requires some gathering of info. You will need to have some things ready for the variables we use in the template.

• Assumptions
  
  • You are working with AWS cloud provider
    
  • You are familiar with OpenShift install config file format and items
    
• Requirements
  
  • base domain
    
  • cluser name
    
  • machineCIDR
    
  • aws region
    
  • OpenShift pull secret
    
  • A valid ssh public key (one that has matching private key in ~/.ssh)

Running the playbook

• Using this playbook
  

  • Create a directory for install files
    mkdir -p install-files

  • Tell openshift to create the install-config
    openshift-install create install-config --dir install-files

  • Get the playbooks folder clned into the install-config directory
    cd install-files
git clone https://github.com/ddreggors/ocp4-install-config-helper.git

  • Backup your original install-config.yaml
    mv -v {,original-}install-config.yaml

  • Edit the vars.yml, public_key.pub, and pull-secret.txt files (all under install-files/ocp4-install-config-helper/vars)
    

    • You will need to set the appropriate values in the vars.yaml file.
      
    • You will need to copy the contents of your public key (often ~/.ssh/id_rsa.pub) into the public_key.pub file
      
    • Finally you need to paste the contents of the downloaded pull secret into the pull-secret.txt file

  • To run the playbook as is and use the install-config.yaml
    

    • Make sure you are in the install-files directory
      sudo ansible-playbook ocp4-install-config-helper/install-helper.yaml
      
    • Once this playbook finishes you will have a new install-config.yaml file that will have all of your variables set properly in your install-files directory.

  • Finally we can use the new install-config as usual
    cd .. && openshift-install create cluster --dir=./install-files