IIRC, there's a BootP module for Ansible. I'm not at a place where I can verify that though.
On Tue, Nov 8, 2016 at 11:26 AM, Bernard Fay bernard.fay@gmail.com wrote:
It would be hard to use ansible, cfengine or whatever while there no IP address on the new VM.....
On Tue, Nov 8, 2016 at 10:47 AM, cpolish@surewest.net wrote:
On 2016-11-07 14:35, Bernard Fay wrote:
Hi,
We have a virtual environment based on XenServer. In this environment I defined a template for CentOS 7 servers.
I would like to start a script a boot time to complete the
configuration
of
new VMs based on this template. How can I have a script started before
any
login prompt to ask question to the user to complete the configuration
such
as hostname, IP address, etc?
Hi Bernard,
My first impulse was "don't!", and that's probably the best advise. A popular model is that the "firstboot" package takes care of this at the first user login, and *nix systems sort of depend on this "logged in users do stuff" model.
Even better, use ansible, cfengine, chef, or puppet to automate the task of setting things up. This is the _best_ solution and you will eventually come back to it.
But, the darker, cynical part of my brain, the part that says "what, you're cutting down on coffee?" part, said "sure you can". Here's how it _could_ be done.
DON'T DO THIS. TURN BACK NOW.
Replace /sbin/init with a shell script that does what you want. It will be the first userland process started, have the console for I/O, and run as root. At completion, restore the original /sbin/init and reboot. Leave no traces behind. Do not document your awful hack, others will use your words against you.Best regards,
Chuck
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