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IPFS for downloading images, using decentralized peer-to-peer #2407

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afbjorklund opened this issue Jun 9, 2024 · 2 comments · May be fixed by #2408
Open

IPFS for downloading images, using decentralized peer-to-peer #2407

afbjorklund opened this issue Jun 9, 2024 · 2 comments · May be fixed by #2408

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@afbjorklund
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afbjorklund commented Jun 9, 2024 •
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Description

It should be possible to upload the images to IPFS, and then use such an address to download them p2p (by cid):

ipfs://bafybeig5sch22ecfox7gq724rz7uivydwvnnpuqdcnjz72iwelgtrakzui/ubuntu-24.04-server-cloudimg-amd64.img

CLI: https://docs.ipfs.tech/how-to/kubo-basic-cli/#install-kubo

GUI: https://docs.ipfs.tech/how-to/desktop-app/#install-ipfs-desktop

Implementation itself should be similar to ORAS: #2405

Setting up a hosting network is a completely different story.

Using an external ipfs tool on purpose, to cut down on dependencies.

It would be possible to use github.com/ipfs/kubo directly, as a "library".
@afbjorklund afbjorklund linked a pull request Jun 9, 2024 that will close this issue
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@afbjorklund afbjorklund changed the title IPFS for downloading images IPFS for downloading images, using peer-to-peer Jun 9, 2024
@afbjorklund
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afbjorklund commented Jun 23, 2024 •
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Best case scenario, where both images and archives are found in local diskstore:

? Creating an instance "ipfs" Proceed with the current configuration
INFO[0000] Attempting to download the image              arch=x86_64 digest="sha256:32a9d30d18803da72f5936cf2b7b9efcb4d0bb63c67933f17e3bdfd1751de3f3" location="https://cloud-images.ubuntu.com/releases/24.04/release-20240423/ubuntu-24.04-server-cloudimg-amd64.img"
Downloading the image (ubuntu-24.04-server-cloudimg-amd64.img)
453.00 MiB / 453.00 MiB [---------------------------------] 100.00% 340.48 MiB/s
INFO[0002] Used ipfs "bafybeig5sch22ecfox7gq724rz7uivydwvnnpuqdcnjz72iwelgtrakzui" 
INFO[0002] Attempting to download the nerdctl archive    arch=x86_64 digest="sha256:2c841e097fcfb5a1760bd354b3778cb695b44cd01f9f271c17507dc4a0b25606" location="https://github.com/containerd/nerdctl/releases/download/v1.7.6/nerdctl-full-1.7.6-linux-amd64.tar.gz"
Downloading the nerdctl archive (nerdctl-full-1.7.6-linux-amd64.tar.gz)
226.46 MiB / 226.46 MiB [---------------------------------] 100.00% 360.66 MiB/s
INFO[0004] Used ipfs "bafybeieipdaxd3fzy3j7syzzxdaqxramk65j7ajzcqgmi6b5jyq4jgbwue" 
INFO[0004] Run `limactl start ipfs` to start the instance.

When ipfs (kubo) is not available, or image not found in IPFS, it would use HTTP...

In either case, the digest is verified before putting in the cache (with the url as key)

@afbjorklund
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It is still possible to use ipfs:// as the primary, but now using a secondary cid:

images:
# Try to use release-yyyyMMdd image if available. Note that release-yyyyMMdd will be removed after several months.
- location: "https://cloud-images.ubuntu.com/releases/24.04/release-20240423/ubuntu-24.04-server-cloudimg-amd64.img"
  arch: "x86_64"
  digest: "sha256:32a9d30d18803da72f5936cf2b7b9efcb4d0bb63c67933f17e3bdfd1751de3f3"
  cid: bafybeig5sch22ecfox7gq724rz7uivydwvnnpuqdcnjz72iwelgtrakzui
- location: "https://cloud-images.ubuntu.com/releases/24.04/release-20240423/ubuntu-24.04-server-cloudimg-arm64.img"
  arch: "aarch64"
  digest: "sha256:c841bac00925d3e6892d979798103a867931f255f28fefd9d5e07e3e22d0ef22"
  cid: bafybeidyzm3zkljztw3xqqjjapcqzsr4odz4evnmk4kfhdmmgird6citbi
# Fallback to the latest release image.
# Hint: run `limactl prune` to invalidate the cache
- location: "https://cloud-images.ubuntu.com/releases/24.04/release/ubuntu-24.04-server-cloudimg-amd64.img"
  arch: "x86_64"
- location: "https://cloud-images.ubuntu.com/releases/24.04/release/ubuntu-24.04-server-cloudimg-arm64.img"
  arch: "aarch64"
archives:
- location: "https://github.com/containerd/nerdctl/releases/download/v1.7.6/nerdctl-full-1.7.6-linux-amd64.tar.gz"
  arch: "x86_64"
  digest: "sha256:2c841e097fcfb5a1760bd354b3778cb695b44cd01f9f271c17507dc4a0b25606"
  cid: bafybeieipdaxd3fzy3j7syzzxdaqxramk65j7ajzcqgmi6b5jyq4jgbwue
- location: "https://github.com/containerd/nerdctl/releases/download/v1.7.6/nerdctl-full-1.7.6-linux-arm64.tar.gz"
  arch: "aarch64"
  digest: "sha256:77c747f09853ee3d229d77e8de0dd3c85622537d82be57433dc1fca4493bab95"
  cid: bafybeibptqoynryoxytxffgyuqjnmwpuujwp6wlps4spygapuwphzkeieq
# No arm-v7
# No riscv64

That means that it can share the digest (and the cache) with the https:// downloads.

@afbjorklund afbjorklund changed the title IPFS for downloading images, using peer-to-peer IPFS for downloading images, using decentralized peer-to-peer Jun 23, 2024
@afbjorklund afbjorklund mentioned this issue Jul 2, 2024
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Add possibility to download IPFS images afbjorklund/lima
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@afbjorklund