a Flo + a Blog = a Flog my ブログ

ESX4 HA error

I only played with ESX4 regular flavor so far and I wanted to try mixing them with ESX4i. However trying to put that host in my cluster would give me HA error.

Enabling HA gave the error:
"Cannot complete the configuration of HA agent on the host. See the task for details for addional information. "

Without much details I was almost ready to blame it on ESX4i. However after checking everything I found out that my DNS servers settings were wrong.

Changing my DNS to the right IPs and HA configuration worked like a charm.

Obviously my sticky keys did not help but of course stressed out the reminder that HA relies on DNS heavily.