Introduction
This document describes how to run Upgrade Readiness validation in Cisco DNA Center 2.3.5.x.
Background
Prior to Cisco DNA Center 2.3.5.x, the AURA tool was used to assess the Upgrade Readiness of a cluster. With Restricted Shell fully implemented in 2.3.5.x, most of the AURA upgrade checks are now implemented in Cisco DNA Center. This document provides step-by-step instructions of how to check the Upgrade Readiness of a cluster.
How to run Upgrade Readiness
Upgrade Readiness is part of multiple new validation tools on the System Health page.
1. From the Cisco DNA Center GUI's hamburger menu, click System > System Health.
![Choose System Health](/c/dam/en/us/support/docs/cloud-systems-management/dna-center/220621-validate-cisco-dna-center-upgrade-readin-00.png)
2. In the upper right hand corner of the System Health page, click Tools and select Validation Tool.
![Choose Validation Tool](/c/dam/en/us/support/docs/cloud-systems-management/dna-center/220621-validate-cisco-dna-center-upgrade-readin-01.png)
3. If you are running the Validation Tool for the first time, click on "New Validation Run" then go to Step 5.
![Start a New Validation Run](/c/dam/en/us/support/docs/cloud-systems-management/dna-center/220621-validate-cisco-dna-center-upgrade-readin-02.png)
4. If you have run any validations in the past, click Add.
![Add another instance of a Validation Run](/c/dam/en/us/support/docs/cloud-systems-management/dna-center/220621-validate-cisco-dna-center-upgrade-readin-03.png)
5. On the New Validation Run page, enter a name, check the Upgrade Readiness Status box then click Run.
![Make it an upgrade validation](/c/dam/en/us/support/docs/cloud-systems-management/dna-center/220621-validate-cisco-dna-center-upgrade-readin-04.png)
6. The validation run typically finishes in a minute. Refresh the browser to show the latest status. Here a completed validation run is displayed.
![Check the results](/c/dam/en/us/support/docs/cloud-systems-management/dna-center/220621-validate-cisco-dna-center-upgrade-readin-05.png)
7. The status column indicates if there are any errors, warning or other information. Click on View Status.
![Export the results](/c/dam/en/us/support/docs/cloud-systems-management/dna-center/220621-validate-cisco-dna-center-upgrade-readin-06.png)
8. If the status of each of the validation tests is "information," please proceed to upgrading the cluster. If there are any errors, please correct them before doing the upgrade. This report can be exported by clicking Export in the top right corner. The report is downloaded as a PDF file and can be reviewed with the TAC if needed.