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Add unikernel runtime: run services as Nanos VMs under QEMU/KVM

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Implements the hypervisor design's Phase 1: a second runtime.Runtime
backend (QEMU) that runs each service component as a Nanos unikernel VM
instead of a podman container, selected per-component via a new
runtime = "unikernel" service-def field.

- internal/runtime/qemu.go: QEMURuntime. Pull extracts the ELF from the
  OCI image; Run does `ops build` + boots qemu-system-x86_64 with KVM,
  user-mode net port-forwards, QMP control socket and serial console log;
  Stop/Remove/Inspect/List/Logs map onto VM lifecycle + state dir.
- proto/registry/servicedef: add runtime, memory_mb, vcpus fields
  (registry migration 5).
- agent: holds both runtimes; runtimeFor() selects per component;
  listAllContainers() merges containers + VMs so drift/status see both.
  Unikernel runtime auto-enables on nodes with /dev/kvm + ops.

Validated end-to-end on straylight: a test service deploys via
`mcp deploy --direct`, boots as a Nanos unikernel, serves HTTP through
the agent port-forward, and reports running via `mcp status`/`mcp logs`.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Kyle Isom
2026-06-11 00:54:49 -07:00
parent 3b08caaa0a
commit d56f224359
30 changed files with 949 additions and 152 deletions
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7
internal/agent/undeploy.go
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@@ -36,7 +36,7 @@ func (a *Agent) UndeployService(ctx context.Context, req *mcpv1.UndeployServiceR
}
// Mark the service as inactive.
if err := registry.UpdateServiceActive(a.DB, serviceName, false); err != nil {
if err := registry.UpdateServiceActive(a.DB, serviceName, false, ""); err != nil {
a.Logger.Warn("failed to mark service inactive", "service", serviceName, "err", err)
}
@@ -73,10 +73,11 @@ func (a *Agent) undeployComponent(ctx context.Context, serviceName string, c *re
}
// 4. Stop and remove the container.
if err := a.Runtime.Stop(ctx, containerName); err != nil {
rt := a.runtimeFor(c.Runtime)
if err := rt.Stop(ctx, containerName); err != nil {
a.Logger.Info("stop container (ignored)", "container", containerName, "error", err)
}
if err := a.Runtime.Remove(ctx, containerName); err != nil {
if err := rt.Remove(ctx, containerName); err != nil {
a.Logger.Info("remove container (ignored)", "container", containerName, "error", err)
}