Upgrade the hosts in your environment using the upgrade coordinator.
Prerequisites
- Verify that you have configured the overall hosts upgrade plan. See Configure Hosts.
- Verify that ESXi hosts that are part of a disabled DRS cluster or standalone ESXi hosts are placed in maintenance mode.
For ESXi hosts that are part of a fully enabled DRS cluster, if the host is not in maintenance mode, the upgrade coordinator requests the host to be put in maintenance mode. vSphere DRS migrates the VMs to another host in the same cluster during the upgrade and places the host in maintenance mode.
- For ESXi host, for an in-place upgrade you do not need to power off the tenant VMs.
- For a KVM host, for an in-place upgrade you do not need to power off the VMs. For a maintenance mode upgrade, power off the VMs.
- For hosts running ESXi 6.5U2/U3 or ESXi 6.7U1/U2, during maintenance mode upgrade to NSX-T Data Center 2.5.1, the host is rebooted if stale DV filters are found to be present on the host. Upgrade to ESXi 6.7 U3 or ESXi 6.5 P04 prior to upgrading to NSX-T Data Center 2.5.1 if you want to avoid rebooting the host during the NSX-T Data Center upgrade.
- For a stateless ESXi host, log in vCenter Server and update the ESXi image with the NSX-T Data Center kernel modules.
Procedure
What to do next
You can proceed with the upgrade only after the upgrade process finishes successfully. If some of the hosts are disabled, you must enable and upgrade them before you proceed. See Upgrade Management Plane.
If there are upgrade errors, you must resolve the errors. See Troubleshooting Upgrade Failures.