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# Checklist: Upgrading Your AWS Cluster

Use this checklist to complete the upgrade tasks in the listed order.

Throughout the rolling upgrade process, services not actively being upgraded will continue to be available. Services that utilize the ArcSight Database, such as event ingestion and search, will be interrupted during the Database upgrade phase, but any in-flight data would be cached and processed as soon as the Database upgrade completes.

If you deployed and configured your system for high availability, during the rolling Kubernetes worker node upgrade process, services delivered by pods on the affected worker node will be restarted on another worker node. Similarly, the upgrade of Kubernetes pods is performed in a rolling manner, so there will be a brief pod-level service pause as pods are restarted to perform the upgrade. Some services, such as Transformation Hub, can be configured for high availability with pod replicas so that there are no service pauses during the rolling upgrade.

| Task | See
--- | --- | ---
| Ensure that you are upgrading from and to the correct version of ArcSight Platform | ArcSight Platform Upgrade Paths
| Identify the product versions, files to download, and known issues related to the upgrade | Release Notes for ArcSight Platform 23.3
| Download the installation packages | Downloading the Upgrade Packages for an AWS Deployment
| Back up the ArcSight Platform configuration data; the Postgres database, which contains the configuration of your deployed capabilities; and, if you have Intelligence or Recon deployed, the ArcSight Database | Backing Up and Restoring
| (Conditional) If your deployment includes Intelligence or Recon, upgrade the Database | Upgrading the Database in AWS
| Upgrade the OMT infrastructure | Running the ArcSight Platform OMT Upgrade (AWS)
| Create new target groups with the new port values for the front-end and portal ingress controller services | Configuring Controller Services
| Upgrade the deployed capabilities | Upgrading Deployed Capabilities in AWS
| Backing Up the Elasticsearch Data | Backing Up the Elasticsearch Data
| Upgrade Kubernetes version of the control plane and worker nodes | Upgrading EKS
| Recovering and Restoring Elasticsearch Data | Recovering and Restoring Elasticsearch Data
| Complete post-upgrade tasks | Completing Post-Upgrade Tasks
| (Conditional) If your environment includes ESM, you should upgrade to the latest version | Upgrading ESM
| (Conditional) If you have purchased licenses for additional capabilities, deploy them to your environment | Adding Additional Capabilities to an Existing Cluster