[Samba] Join AD fails DNS update

L.P.H. van Belle belle at bazuin.nl
Wed Jun 25 01:35:11 MDT 2014

And Again, there are 2 ways how resolving is done... read the last part, i've put in a example... 

And, yes i know that.... 

>The domain and search keywords are mutually exclusive.  If 
>more than one instance of these keywords is present, the last instance wins.

And yes, above is correct 

but you really need to understand that putting the domain there also make this much easier to understand for none experienced users.

>>   the domain name is determined from the hostname and the domain search path is constructed from  the  domain name.
>>   The  search  list is normally determined from the local domain name; by default, it contains only the local domain name.  
      This may be changed by listing the desired domain search path following 
>>   The domain and search keywords are mutually exclusive.  If more than one instance of these keywords is present, the last instance wins. 

And to make sure you set the correct domain/search you can put it like this, it wont hurt, it isnt wrong and it helps people put in the correct domain/search.
it just adds the primary domain in the search 2 times.

This is not wrong. 
domain search1.domain 
search search1.domain 

this is the same and also not wrong.. 
search search1.domain 

and this is also the same, and not wrong. 
domain search1.domain 

but which one helps a newbe the most with what he/she is do-ing. 


this is the same and not wrong. ( if you installed the right way ) 

and dont forget this one. 

man gethostname
>> The  GNU C library does not employ the gethostname() system call; instead, it implements gethostname() as a library function that calls uname(2)

To draw another parallel, you seem to want the output of the command  hostname --fqdn  (which depends on the resolver), while others want  hostname .
getfqdn  seems to return a different result than  gethostname  if the hostname of the machine is an alias.

For example if I have this in  /etc/hosts and with some python testing.   localhost localhost.localdomain localhost2 localhost2.localdomain2 mypersonaldomainname.tld

python -c 'import socket; print socket.getfqdn()'
	gives localhost.localdomain

python -c 'import socket; print socket.gethostname()'
	gives  mypersonaldomainname.tld

and same with cfengine.
P.S. cfengine has sys.fqhost, sys.domain, sys.uqhost (which seem to be DNS based) and sys.host (which seems to be extracted from uname)

I hope its now more clear.

Best regards, 



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