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How to incremental serial number in dns zone?

Discussion in 'Bind / DNS / Nameserver Issues' started by vanessafan, May 27, 2011.

  1. vanessafan

    vanessafan Member

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    after a dns zone do you need to update the serial number? and if so how do you do that?
     
    #1 vanessafan, May 27, 2011
  2. astopy

    astopy Well-Known Member

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    If you're editing it in WHM, it'll increment the serial number automatically. If you're editing it by hand for some reason, just increment the serial number by hand as well.
     
    #2 astopy, May 27, 2011
  3. vanessafan

    vanessafan Member

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    for a given file domain.com.db how do you do this?
    maybe via the command line?
    i need to do it for a couple hundred domains
     
    #3 vanessafan, May 27, 2011
  4. astopy

    astopy Well-Known Member

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    The format of the zone files should be predictable, so you should be able to write a script to edit them all. There isn't an easy, ready-made way of doing it as far as I know.

    The other way would be to edit each file with vim, emacs, nano, whatever. That would obviously be pretty time consuming though.
     
    #4 astopy, May 27, 2011
  5. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello :)

    This could be achieved using a Perl command like the one posted below. Please notice that /var/named is backed up before running this command so it can be restored if any errors occur:

    Code:
    # cp -a /var/named /var/named-backup 
# find /var/named/*.db -mtime -1 -exec perl -pi -e 'if (/^\s+(\d{10})\s+;\s+serial/i) { my $i = $1+1; s/$1/$i/;}' '{}' \;
    This will increment the serial for all DNS zones within the /var/named directory.

    Thank you.
     
    #5 cPanelMichael, May 30, 2011
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