velero-backup-notification doesnt work with Graviton node

[noamlivni]

Hey @vitobotta , im having issue with velero-notifications. im using velero-backup-notifiaction , until now i worked with amd64 arch nodes and it worked amazing

i changed the arch of my nodes to graviton (arm64) and it stopped working , i get this error: exec /velero-notifications: exec format error

[vitobotta]

Hi, you need to build the image for ARM to work on that architecture :)

[noamlivni]

@vitobotta i download the image as arm64 docker pull --platform linux/arm64 vitobotta/velero-backup-notification:v1.0.0

here is the inspect of the image

`[

    "Parent": "",
    "Comment": "buildkit.dockerfile.v0",
    "Created": "2023-05-02T11:30:11.142075184Z",
    "Container": "",
    "ContainerConfig": {
        "Hostname": "",
        "Domainname": "",
        "User": "",
        "AttachStdin": false,
        "AttachStdout": false,
        "AttachStderr": false,
        "Tty": false,
        "OpenStdin": false,
        "StdinOnce": false,
        "Env": null,
        "Cmd": null,
        "Image": "",
        "Volumes": null,
        "WorkingDir": "",
        "Entrypoint": null,
        "OnBuild": null,
        "Labels": null
    },
    "DockerVersion": "",
    "Author": "",
    "Config": {
        "Hostname": "",
        "Domainname": "",
        "User": "",
        "AttachStdin": false,
        "AttachStdout": false,
        "AttachStderr": false,
        "Tty": false,
        "OpenStdin": false,
        "StdinOnce": false,
        "Env": [
            "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
        ],
        "Cmd": [
            "/velero-notifications"
        ],
        "ArgsEscaped": true,
        "Image": "",
        "Volumes": null,
        "WorkingDir": "",
        "Entrypoint": null,
        "OnBuild": null,
        "Labels": null
    },
    "Architecture": "arm64",
    "Os": "linux",
    "Size": 44734073,
    "VirtualSize": 44734073,
    "GraphDriver": {
        "Data": {
            "LowerDir": "/var/lib/docker/overlay2/bcabe00f4cfb41febcd98fae899cd8977ef2d9ee67d1e5f6904112cb55b4f786/diff",
            "MergedDir": "/var/lib/docker/overlay2/6488ee570084b5877dab855f6c61eb572f1a94dbe4a495e09ba6a3de604b3717/merged",
            "UpperDir": "/var/lib/docker/overlay2/6488ee570084b5877dab855f6c61eb572f1a94dbe4a495e09ba6a3de604b3717/diff",
            "WorkDir": "/var/lib/docker/overlay2/6488ee570084b5877dab855f6c61eb572f1a94dbe4a495e09ba6a3de604b3717/work"
        },
        "Name": "overlay2"
    },
    "RootFS": {
        "Type": "layers",
        "Layers": [
            "sha256:26cbea5cba74143fbe6f584f5fc5321543155aedc4a434fcaa63b643877b5a74",
            "sha256:c7086c3b6feae8516c178070b150b3c6667f250052e1b6d0fd5616a9f0e840ed"
        ]
    },
    "Metadata": {
        "LastTagTime": "2023-12-25T06:07:42.805128792Z"
    }
}

]`

[vitobotta]

Ah sorry by bad, the problem is the binary itself. It would need to be compiled for ARM to work on that architecture, so it's not just the image.

[noamlivni]

@vitobotta thanks! can you help me to understand how to compile it?

[vitobotta]

You need an ARM Linux machine with Crystal installed, better if with Alpine Linux so you can compile a static binary, then run:

shards install --without-development
crystal build src/hetzner-k3s.cr --release --static

Then build the Docker image with the binary that it creates and the Dockerfile in this repo.