Packer - associate an existing elastic IP - possible?

[Frank.Lapierre]

Hi All,

I was trying to figure out if it's possible to associate an existing elastic IP address to a packer build?

I have an on-prem server that initiates packer builds and I have a limited number of elastic IPs that are accessible through the corporate firewall. I don't want to have to set up a VPN connection to access through the private IP. I also can't use a public_ip_address because they're randomly assigned and change all the time. https://www.packer.io/docs/builders/amazon-ebs.html#associate_public_ip_address

Anyone knows if it's possible to associate an existing elastic IP? Maybe I'm just not seeing the option... I found this that seems to state it's already implemented? https://github.com/hashicorp/packer/issues/578

Thanks!

Frank.

[Rickard von Essen]

There isn't direct support i Packer, in #578 there is a note "Note, this only adds support for AssociatePublicIpAddress, not Elastic IPs.". See https://github.com/hashicorp/packer/issues/578#issuecomment-29267092

But this can still be done. You give the ec2 instance packer launches an Instance Role that allow it to associate the EIP with it and use a user script (cloud-init) to associate it with the EIP. Also in you packer template you have to use ssh_host to set the IP address of the EIP, see https://www.packer.io/docs/templates/communicator.html#ssh_host

Hope that was clear enough. Please get back if you have any trouble get this working.

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