:status: new

=======================================
System upgrade (version 3.0.2 onwards)
=======================================

.. important::
   Before committing to the upgrade process, administrators should take appropriate measures: create a backup or at least snapshot of NV3 primary node; schedule service window for the update; allow access from NV3 nodes to the *cloud.nacview.com* and *repo.nacview.com* domain on standard HTTPS protocol (TCP/443).

.. important::
    Prerequisites for update are as follows:

    * active support subscription on the partner portal
    
    * NV3's serial number is registered on the partner portal

------------------------
Performing the upgrade
------------------------

1. Login to the NACVIEW NV3 Web UI and proceed to the `System configuration`, then `System nodes`. Click on `Upgrade` button to bring out upgrade window. 

.. thumbnail:: /_images/getting-started/upgrade/upgrade-web-1.jpg
    :width: 50 %

2. Click on `Check upgrade button`. System will check whether it's eligible for update.

.. thumbnail:: /_images/getting-started/upgrade/upgrade-web-2.jpg
    :width: 50 %

3. Click on `Upgrade` button to begin update process.

.. thumbnail:: /_images/getting-started/upgrade/upgrade-web-4.jpg
    :width: 50 %

The update wizard will appear and show the progress of the update. 

.. thumbnail:: /_images/getting-started/upgrade/upgrade-web-5.jpg
    :width: 50 %

System will reboot after finishing update. 

.. thumbnail:: /_images/getting-started/upgrade/upgrade-web-6.jpg
    :width: 50 %

It is advised to refresh browser and clear page's cache (CTRL+F5) before logging in to the system.

.. warning::
   In case of encountering errors when trying to login to the system's Web UI, one should clear system cache. Login to the CLI and select `2. Maintenance`, then select `9. Clear system cache`.

.. thumbnail:: /_images/getting-started/upgrade/upgrade-web-7.jpg
    :width: 50 %
