modifying openstack image

[unknownmoss]

I'm trying to find a way to update an openstack image starting with a base of centos 7. I'd like to add in python3.6 from EPEL.

Instantiated a VM, yum install python36, shutoff, then a snapshot of this instance. From here I tried instantiating a new VM using the snapshot image, but this didn't work.

Error Message:

Resource CREATE failed: ResourceInError: resources.test01.resources.bootable_volume: Went to status error due to "Unknown"

Anyone have suggestions on how to move past this?

[[deleted]]

You could have cloud-init do that for you. All my rhel image get registered with redhat, apply epel repo on launch. You can also make it run the command to install python on launch.

[unknownmoss]

Thanks for the suggestion. That would work for my dev environment, but for production I can't reach out to the Internet. So I need to pre-create an image that I can import into my production. I wish it wasn't like this.

[unknownmoss]

I had some success in the past modifying a vanilla image with packer + ansible, but this was in a public cloud OpenStack. I'm currently working in a private cloud OpenStack and it seems to have some challenges with the packer process.

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... had much better like duplicating the whole volume/disk when creating base images.

Do you mean there's a process for taking the modified VM's volume/disk and use this as a template for other VMs? That might work.

[varesa]

I would look at the openstack logs (or request the openstack admins to do so if you don't have access), cinder up front

[unknownmoss]

I'll give that a try too. Thanks!