Anyone know how tochange all the dns to point to a new server at once.

[DWHS.net]

Manually editing 100's of dns zones does not sound fun.

Is there a clever way that will do all of them at once.

Thanks,

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[matthewdavis]

Well, if its a set text that you are changing. You can easily do a a mass search & replace with a perl expression.

# perl -pi -e 's,OLDTEXT,NEWTEXT,' *

That will search thru all files in teh current directory (*) and replace OLDTEXT with NEWTEXT. Maybe that'll help.

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[DWHS.net]

Thanks but I do not know ho to set up perl files.

Can you show me what the whole perl file would be, what to name it and how does the file know where the named.conf is?



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[matthewdavis]

That is a command you can run from a shell. If you cannot login to your account using SSH (or putty), then you cannot use this command.

But if you goto the directory of the file you want to modify, and just type that command

# perl -pi -e 's,OLD,NEW,' named.conf

That command will search named.conf for everything 'OLD' and change it to 'NEW'.

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[DWHS.net]

Thanks, I have never ran a perl command from the command line yet.



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[casey]

Originally posted by DWHS.net
Thanks, I have never ran a perl command from the command line yet.




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DWHS,

If that works, could you let me know? I have to do that next week...

It would actually be run from /var/named , right?
# perl -pi -e 's,OLDIP,NEWIP,' *

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[DWHS.net]

O.K. I am going to try it tonight.

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[casey]

Did everything go smoothly?

And is this what you ran from /var/named ?
# perl -pi -e 's,OLDIP,NEWIP,' *

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[DWHS.net]

Actually I have a linguring account that needs more time before I can do it.

Talk to soon about it.

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[rsaylor]

Hi, the perl -pi command will work but not sure about the *

I did that not too long ago but did it in stages. IE: replaced the * with the zone name.

Then after you run the perl -pi command restart named and you will be all good.

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[matthewdavis]

The * just means it'll search all files in the current directory.

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[Stefaans]

Nice solution to search and replace text. But shouldn't one increment each zone serial number as well?

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[matthewdavis]

I'm no BIND/dns guru, so I'm not sure, sorry.

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[casey]

Originally posted by casey
Did everything go smoothly?

And is this what you ran from /var/named ?
# perl -pi -e 's,OLDIP,NEWIP,' *

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Well, the time came for mine to be changed, so I did it, and without a hitch. 6 hours before the move, I updated the ttl by doing
cd /var/named
perl -pi -e 's,86400,3600,' *

Then, 6 hours later I moved all the accounts, then ran
chmod 755 /home/*/public_html
because the permissions were wrong.

Then I changed the IPs by doing
perl -pi -e 's,OLDIP,NEWIP,' *

Unfortunately, due to my lack of programming abilities, I had to go through the zones one by one after that and increment the serial number by one.

Worked nicely. Changes were instantaneous if I had not visited the site recently. If I had, it took about 30 minutes for the change to take effect.

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[matthewdavis]

Good to hear! And I'm sure there's some script or perl expression you could have run to increment that number. I'm no perl guru either. But perl gurus swear you can do anything with perl. Probably could write the next space shuttle with 3 lines of perl code. 1 for lift off, 1 for travel, and 1 for the return trip.

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