Upgrade Coordinator in NSX-T

Upgrade Coordinator is a service that runs on the NSX Manager node, which facilitates the upgrade of the NSX-T infrastructure. Upgrade Coordinator first introduced in NSX-T 1.1 and was later added to support NSX for vSphere upgrades in NSXv 6.4. The Upgrade coordinator is a self-contained Web application that orchestrates the upgrade process of hosts, NSX Edge cluster, NSX Controller cluster, and Management plane.

Upgrade Coordinator Benefits:

Facilitates the upgrade of the NSX-T infrastructure
Provides the ability to plan and execute the hosts upgrade, you can select number of hosts in a vSphere cluster if vCenter is added as a Compute Manager
It works with DRS to migrate the VMs and put the ESXi hosts into maintenance mode
Helps you to minimize the downtime in upgrading the NSX-T environment
The upgrade coordinator guides you through the proper upgrade sequence.
You can track the upgrade process in real time and if required you can pause and resume the upgrade process from the user interface.
Automatically roll back the Controller and Management clusters if the upgrade is failed.

NSX-T Upgrade Checklist:

Review the release notes before the upgrade.
Evaluate the operational impact of the upgrade.
Verify that all the NSX-T Components are in healthy state (Manager, Controller, ESXi/KVM Transport Nodes and NSX Edge Nodes).
Download the latest NSX-T upgrade bundle.
Upload upgrade bundle to NSX Manager.
Configure the upgrade-coordinator service.
Upgrade ESXi/KVM hosts.
Upgrade NSX Edge clusters.
Upgrade NSX Controller cluster.
Upgrade Management cluster.
Perform post-upgrade tasks.
Troubleshoot upgrade errors.