I think I was misunderstood.
The article is about setting up authentication mechanisms (active directory) for vma and esx servers.
My problem is not authentication.
I do like that;
login: vi-admin
password: *****
vifp addserver esx1.testservers.com
enter root pw: *****
vifptarget -s esx1.testservers.com
>>> cd /var/log
nano messages
>>> cannot display because pf permission.
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Because esx thinks that I'm vi-admin but I want to connect as root, not as vi-admin...