devsecops-push-pull-based-deployment.md

copyright	lastupdated	keywords	subcollection
years 2022	2022-06-20	DevSecOps, IBM Cloud	devsecops

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Deployment models

{: #deployment-model}

Deployment models help you to understand your application deployment process across clusters. {: shortdesc}

Push-based deployment

{: #deployment-model-push}

The push-based deployment model deploys your application on a single cluster. It does not require any operator installation on your cluster.

For a push-based deployment, complete these steps:

1. Log in to your Kubernetes or {{site.data.keyword.openshiftlong_notm}} cluster.
2. Apply the deployment files by using the default kubectl{: external} tool.

Pull-based deployment

{: #deployment-model-pull}

The pull-based deployment model is suitable for multi-cluster application deployments. This model uses {{site.data.keyword.satellitelong_notm}} Config as the deployment tool for deploying across multiple clusters. For more information, see Understanding {{site.data.keyword.satelliteshort}} Config.

For a pull-based deployment, complete these steps:

1. Create or update the required {{site.data.keyword.satelliteshort}} config and their versions for the deployment files.
2. Create or update the {{site.data.keyword.satellitelong_notm}} subscriptions with {{site.data.keyword.satelliteshort}} config and the versions that need to be deployed.
3. After the subscriptions are updated, the Razee agent that is installed on the clusters pulls the most recent deployments from {{site.data.keyword.satelliteshort}} config and deploys them across the clusters.