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OCP Cluster Setup

Dependencies

  1. Openshift Client
  2. Linux Cron (CentOS/RHEL/Fedora: yum install cronie , Linux/Unix: apt-get install cron)
  3. Configure your cloud platform credentials in local
  4. Any python3 version (https://computingforgeeks.com/install-latest-python-on-centos-linux/)

Configure virtual environment

1. yum install python3-virtualenv
2. virtualenv --python=python3.x ~/ocp-cluster-setup/venv
3. cd ~/ocp-cluster-setup/venv/bin
4. source activate
5. pip3 install -r ~/ocp-cluster-setup/requirements.txt

This script provides 2 types of deployment

1. Immediate Deployment
2. Scheduled Deployment (Cron Job)

For immediate deployment

python3 ~/ocp-cluster-setup/main.py

For scheduled deployment

python3 ~/ocp-cluster-setup/main.py true

Deployment configuration for OCP

Before deployment make sure these mandatory changes are done

For fast cluster deployment:
------------------------------------------------------------------------------------------------
1. Modify config/ClusterConfig.json: 

    "ocp" : {
            "pull_secret": ""   // Add your pull secret which should have ci build access
    }


2. Modify config/LocalConfig.json:

    {
        "cron_schedule": "0 9 * * 1-5",  // week days 9AM, For more info: https://crontab.guru
        "dir_path": "/tmp",  // cluster setup workspace
        "refresh_openshift_installer": false, // To control OCP installer download
    }
 
 
3. Modify config/emailConfig.json file as per your need:
    
    {
        "email_id" : "[email protected]", // I prefer to use this for our team
        "email_pass": "",    // Mandatory
        "receiver_emails": ["[email protected]", "[email protected]"],    // list of email
     }
     


For cluster deployment with more custom configurations:
--------------------------------------------------------------------------------------------------
1. Paste you own intallConfig content on custom_templates/installConfig.yaml

2. Go to config/clusterConfig.json and enable "custom_install_config_template": true 

(Script wont take any config from setup_info of clusterConfig.json)

Deployment configuration OCS

 1. Modifiy config/LocalConfig.json to deploy OCS:
    {
        "deploy_ocs": true    // This will create OCS catalog
    }
 
 2. Modify OCS subscription options in config/ClusterConfig.json: 

   "ocs": {
       "ocs_build": "quay.io/ocs-dev/ocs-registry:latest",     // OCS build version
       "ocs_subscription": {
            "subscription": "ocs-operator.v4.8.0",             // OCS subscription version
            "subscribe": true                                  // Enable this to subscribe OCS
       }
   }

Logs

 ocpClusterSetup/log/ocpClusterInstallation.log (script related logs)
 /tmp/{clustername-uuid}/.openshift_install.log (openshift-installer logs)

Destroy Cluster

 ocpClusterSetup/openshift-installer/openshift-install destroy cluster --dir {cluster dir path}  // for path check email (or) script-logs

Note

 1. For any changes in OCP build version (config file) , Please remove ocpClusterSetup/openshift-installer and ocpClusterSetup/openshift-installer.tar.gz. Otherwise, Tt will not consider the new version change.
 2. If you dont prefer the above option, Please enable "refresh_openshift_installer" flag( in localConfig). It will download the new build for every new cluster creation request.
     {
        "refresh_openshift_installer": true
     }