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Currently Learning Puppet -- need to know if I can change a hostname?

asked 2013-01-07 13:54:23 -0500

envinyater gravatar image

I just finished reading through the Puppet Tutorial, and I really like what it can do. Some parts of the tutorial went over my head but I'm going to try to find some clarity by doing it again.

Anyways, I am using cloudstack and I want to use Puppet to solve an issue we are having. When we provision a virtual machine, we need to change the hostname. I am hoping I can utilize Puppet to do this by having the Puppet Agent pre-installed on each Virtual Machine before it is spun up.

Is Puppet the way to go ... (more)

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answered 2013-01-07 17:34:22 -0500

Stefan gravatar image

If you run the puppet agent on your new node, it will automatically create a SSL certificate if not already present.

The filename of the certificate and the node's name that is put inside the certificate is determined by the certname configuration option that defaults to the FQDN of your node. You can verify that by running puppet agent --configprint certname on your node.

If the certname is not what you want it to be (because the FQDN is not final), you can pass the certname on the commandline, e.g. your provision script or whatever could run puppet ... (more)

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answered 2013-01-09 17:13:29 -0500

plathrop gravatar image

You can manage /etc/hostname as a file resource and/or use an exec resource to execute the hostname command.

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How do you define the new hostname when the client needs to connect with the old one?

Raphink gravatar imageRaphink ( 2013-01-10 02:48:59 -0500 )edit

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Asked: 2013-01-07 13:54:23 -0500

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Last updated: Jan 09 '13