Re: [atomic-devel] atomic pull from containers-storage

[Chris Negus <cnegus redhat com>]

----- Original Message -----
> HI,
> 
> there was already a similar request on the list before for which I
> have a follow-up question.
> 
> Let's say I have an image created by buildah and the the image has
> been written to the storage location as defined in
> /etc/containers/storage.conf. The default is
> /var/lib/containers/storage. Now I want to pull the image from this
> storage and store it into an ostree repository using the atomic tool.
> This does't seem to work.
> 
> Let's take a look at the buildah default storage:
> 
> 
> # sudo buildah images
> IMAGE ID             IMAGE NAME
>        CREATED AT             SIZE
> 0e04578ef6b7         docker.io/library/foobar:latest
>        Jan 28, 2018 09:48     251 MB
> 
> When I try to pull this image with atomic, it does not work as expected:
> 
> # sudo atomic pull --storage ostree containers-storage:foobar:latest
> The image `containers-storage:foobar:latest` is not fully qualified.
> The default registry configured for Skopeo will be used.
> FATA[0000] Invalid source name
> docker://containers-storage:foobar:latest: invalid reference format
> 
> Is this because atomic does not support the containers-storage
> transport? What else should I use in order to pull an image from this
> storage?

I can't find "containers-storage" referenced in any atomic man pages. There is ostree storage, but I couldn't get that or containers-storage to work as a place to pull from. Maybe someone who knows more that I do could shed some light on this.

One thing that did work is to push the image created by buildah to a registry, then use atomic pull. With the docker-distribution service running on the local host, I did this after building an image with buildah named "foobar":

# buildah push --tls-verify=false foobar:latest localhost:5000/foobar:latest
# atomic pull --storage ostree http:localhost:5000/foobar
# atomic images list | grep foobar
   localhost:5000/foobar   latest   a76583269cbd   2018-01-31 22:04   31.29 MB       ostree

I hope that helps.

-- Chris Negus