Please allow for supporting alternative apt mirrors for UCA

[Paul Goins]

I'm working in an environment where the customer wants all apt packages to be pulled via their Landscape-hosted package mirror. This is doable for most charms on their cloud, but it appears presently the charm does not expose anything for providing the "-c" option to retrofit.sh.

Additionally, using a Landscape-hosted mirror also requires importing the public key for the Landscape mirror via apt-key. That currently looks like it is not supported by retrofit.sh.

[Alex Kavanagh (ajkavanagh)]

Triaged as wishlist; list does not mean it is not important, just that it is a new feature for the charm.

[Yoshi Kadokawa (yoshikadokawa)]

This is also helpful in offline environment where only has internal mirror server.
At the moment, creating a octavia diskimage via this retrofit charm, it will fail due to unreachability to the upstream mirrors.

[Yoshi Kadokawa (yoshikadokawa)]

For now, I have managed to workaround this by creating the Octavia disk image with the following manual steps.

# Download stock ubuntu image
sudo wget -O ubuntu-20.04-server-cloudimg-amd64.img \
https://<INTERNAL_MIRROR_URL>/ubuntu-20.04-server-cloudimg-amd64.img

# Create amphora image
amphora_img_name="amphora-haproxy-ubuntu-20.04"
sudo octavia-diskimage-retrofit -d \
  -m 'deb http://<INTERNAL_MIRROR_URL> focal multiverse main restricted universe' \
  -c 'deb http://<INTERNAL_MIRROR_URL> focal-updates multiverse main restricted universe' \
  -u ussuri \
  ubuntu-20.04-server-cloudimg-amd64.img \
  ${amphora_img_name}.qcow2

# Convert the image to RAW format
sudo qemu-img convert \
  -f qcow2 -O raw \
  ${amphora_img_name}.qcow2 \
  ${amphora_img_name}.raw

# Upload the image to Glance
mkdir -p $HOME/octavia-images/
openstack image create --tag octavia-amphora \
  --container-format bare \
  --disk-format raw \
  --protected \
  --file ${amphora_img_name}.raw \
  ${amphora_img_name}

[Chris MacNaughton (chris.macnaughton)]

It looks like this was resolved in https://review.opendev.org/c/openstack/charm-octavia-diskimage-retrofit/+/714392