Windows 2008 R2 Domain Controller + Services with Local Admin Rights

We are setting up McAfee SIEM in our environment to tail the DNS log files on our DNS servers which are also DC's. The application requires the service account to be a local admin but of course "local admin" does not exist on a DC... I did find the article below on using the Netlocal group command....

I tried this in my lab and did add the test user to the local administrator group. Here are my questions

What actual rights would this user account have in AD and on other DC?

http://www.richardawilson.com/2010/06/add-user-as-local-administrator-on.html
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compdigit44Asked:
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LearnctxConnect With a Mentor EngineerCommented:
If you follow the advice above you would be making the user a member of the Administators group in the domain. There is no local administrators group on a domain controller in the traditional sense because it does not use the local SAM database. Its database is the AD database now (Ndts.dit). The person who wrote that article is terrible ignore them.

I would say export the logs to a network share and have the McAfee seem consume them from that location. This is very common for other solutions like Splunk as well. Otherwise look at installing their agent if they have one on the DC which would usually run with system privileges.
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compdigit44Author Commented:
Thank you for your feedback. I have been doing extra testing in my lab today and found the when adding a user to the domain "Administrators" group gave them full access to AD.  I did find after adding my test user to the Server Operators group gave them enough access to the DC not only read-only access in AD which it perfect.

I guess I am having a mental block. You think Domain Admin group as the main group but get confused with the "Administrators" group as well..
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LearnctxEngineerCommented:
Yes, it happens. That guys article is truly scary stuff though and really a perfect example of someone out of their depth giving out advice. I was going to comment on his article but I see many others have already and he still has not updated his advice. Very poor form not to go back and correct himself.
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compdigit44Author Commented:
agreed could you clear up my confusion so to the permissioin difference between the "Administrators" group and Domain Admins.... if any
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