vSphere DRS anti-affinity rules block ESXi hosts NSX upgrade

In our OpenDev NSX environment, we have 3 vSphere clusters: each cluster has 3 ESXi hosts.

During the NSX upgrade from 6.2.3 to 6.2.4, we see the following message when we tried to upgrade the ESXi cluster which NSX Controllers are running on: DRS recommends hosts to evacuate.

nsx-upgrade

After a quick investigation, I realised that the issue is due to default DRS anti-affinity rule for NSX controllers. This anti-affinity rule prevent any host in management cluster from going into maintenance mode as we have only 3 ESXi hosts in this cluster.

So I just temporarily disable the NSX controller anti-affinity rule so that EAM (ESX Agent Manager) can continue to update the ESXi hosts VIB to the new version.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s