2024-07-27 09:58:18 +02:00
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# Build and Set Up a Github-compatible Forgejo Runner on Proxmox
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In order for Forgejo workflows to be usable out-of-the-box with as many
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actions as possible, it is useful to habe a runner that supports the same
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tools as the standard Github runner `ubuntu-latest`. Github does publish the
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code they use to build their runner images at
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https://github.com/actions/runner-images, but that repo cannot be used
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directly to build KVM images for use with Proxmox.
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The fork https://github.com/fffonion/runner-images-kvm has the necessary
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changes to enable building such images.
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## Building the KVM runner image
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The script `build-github-runner-kvm-ubuntu-latest-qcow.sh` installs the
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necessary package dependencies to build a KVM image, Hashicorp Packer (in
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the latest version still licensend under the MPL), and builds the Ubuntu
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image (24.04 at the moment). The resulting image
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`github-runner-image-ubuntu-24.04.qcow2` can then be used in Proxmox, or any
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other KVM based virtualization solution.
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## Creating a Proxmox template VM
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The script `build-forgejorunner-template.sh` runs on a Proxmox cluster host.
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It runs the build script via SSH on a builder VM (that has nested virtualization
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enabled), in case of CCCHH a Debian 12 install. It then copies the resulting VM to the
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2024-07-27 10:18:41 +02:00
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Proxmox host. **Note**: at the time of this writing, the builder VM needs at
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least 16 cores to satisfy the KVMn config for the VM being built.
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2024-07-27 09:58:18 +02:00
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It creates a template VM from the image, installing https://code.forgejo.org/forgejo/runner
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and some helper scripts.
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## Cloning the Template VM
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You can clone the template VM from the GUI, or through `qm clone`. Make the
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necessary changes and boot the VM.
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You can clone and register the runner using the script
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`clone-and-register.sh`.
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## Registering the Runner
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You can run the registration by logging in to the VM either on the console
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or through SSH, by running `forgejo-runner register` as the `forgejo-runner`
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user, or by invoking `/usr/local/bin/register-forgejo-runner`, supplying the
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registration token as the first argument.
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You can run the registration from the Proxmox cluster host:
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```
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qm guest exec 150 -- sudo -iu forgejo-runner register-forgejo-runner iwKWPwI3H6h93kRuhXqMPcmCR2OGpgZlDT3mufGb
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qm guest exec 150 -- systemctl restart forgejo-runner
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```
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