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3.29 resolve

The file /etc/resolv.conf specifies the default nameserver for each host, as well as the local domain name. This file can also contain other information, but these are the only two things cfengine currently cares about. In specifying nameservers you should use the dotted numerical form of the IP addresses since your system may not understand the text form if it is not correctly configured. You may list as many nameservers as you wish, with the default server at the top of the list. The resolver normally ignores entries if you add more than three. The statement:

 
resolve:

  mygroup::

     129.240.22.35
     129.240.22.222
     129.240.2.3

declares a list of nameservers for hosts in the group or class mygroup. When you add the resolve command to the actionsequence, this declaration together with the domain variable (set here to uio.no) results in a /etc/resolv.conf file of the form:

 
domain uio.no
nameserver 129.240.22.35
nameserver 129.240.22.222
nameserver 129.240.2.3

Note that the resolve action does not delete anything from the file /etc/resolv.conf. It adds nameservers which do not previously exist and reorders the lines of servers which do exist.

As of version 1.3.11, you may use a quoted string to add non-nameserver lines to this file. For example:

 
resolve:

  mygroup::

     129.240.22.35
     129.240.22.222
     "# Comment line"
     "order bind, files"

If the line begins with a non-numeric character, the word `nameserver' is not added to the line.


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