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Add experimental Void guest workflow and vsock agent

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Make iterating on a Firecracker-friendly Void guest practical without replacing the Debian default image path.

Add local Void rootfs build/register/verify plumbing, a language-agnostic dev package baseline, and guest SSH/work-disk hardening so new images use the runtime bundle key, keep a normal root bash environment, and repair stale nested /root layouts on restart.

Replace the guest PING/PONG responder with an HTTP /healthz agent over vsock, rename the runtime bundle and config surface from ping helper to agent while still accepting the legacy keys, and route the post-SSH reminder through the new vm.health path.

Validated with GOCACHE=/tmp/banger-gocache go test ./..., make build, bash -n customize.sh make-rootfs-void.sh, and git diff --check.
This commit is contained in:
Thales Maciel 2026-03-19 14:51:25 -03:00
parent c8d9a122f9
commit 3ed78fdcfc
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GPG key ID: 33112E6833C34679
42 changed files with 2222 additions and 388 deletions
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5
internal/daemon/capabilities.go
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@ -191,7 +191,10 @@ func (workDiskCapability) ContributeMachine(cfg *firecracker.MachineConfig, vm m
}
func (workDiskCapability) PrepareHost(ctx context.Context, d *Daemon, vm *model.VMRecord, image model.Image) error {
return d.ensureWorkDisk(ctx, vm, image)
if err := d.ensureWorkDisk(ctx, vm, image); err != nil {
return err
}
return d.ensureAuthorizedKeyOnWorkDisk(ctx, vm)
}
func (workDiskCapability) AddDoctorChecks(_ context.Context, d *Daemon, report *system.Report) {