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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
Download Patch File Download Diff File Expand all files Collapse all files

22
internal/agent/purge_test.go
View File

@@ -14,7 +14,7 @@ func TestPurgeComponentRemoved(t *testing.T) {
ctx := context.Background()
// Set up a service with a stale component.
if err := registry.CreateService(a.DB, "mcns", true); err != nil {
if err := registry.CreateService(a.DB, "mcns", true, ""); err != nil {
t.Fatalf("create service: %v", err)
}
if err := registry.CreateComponent(a.DB, &registry.Component{
@@ -69,7 +69,7 @@ func TestPurgeRefusesRunning(t *testing.T) {
a := newTestAgent(t, rt)
ctx := context.Background()
if err := registry.CreateService(a.DB, "mcr", true); err != nil {
if err := registry.CreateService(a.DB, "mcr", true, ""); err != nil {
t.Fatalf("create service: %v", err)
}
if err := registry.CreateComponent(a.DB, &registry.Component{
@@ -109,7 +109,7 @@ func TestPurgeRefusesStopped(t *testing.T) {
a := newTestAgent(t, rt)
ctx := context.Background()
if err := registry.CreateService(a.DB, "mcr", true); err != nil {
if err := registry.CreateService(a.DB, "mcr", true, ""); err != nil {
t.Fatalf("create service: %v", err)
}
if err := registry.CreateComponent(a.DB, &registry.Component{
@@ -140,7 +140,7 @@ func TestPurgeSkipsDefinedComponent(t *testing.T) {
a := newTestAgent(t, rt)
ctx := context.Background()
if err := registry.CreateService(a.DB, "mcns", true); err != nil {
if err := registry.CreateService(a.DB, "mcns", true, ""); err != nil {
t.Fatalf("create service: %v", err)
}
if err := registry.CreateComponent(a.DB, &registry.Component{
@@ -176,7 +176,7 @@ func TestPurgeDryRun(t *testing.T) {
a := newTestAgent(t, rt)
ctx := context.Background()
if err := registry.CreateService(a.DB, "mcns", true); err != nil {
if err := registry.CreateService(a.DB, "mcns", true, ""); err != nil {
t.Fatalf("create service: %v", err)
}
if err := registry.CreateComponent(a.DB, &registry.Component{
@@ -217,7 +217,7 @@ func TestPurgeServiceFilter(t *testing.T) {
ctx := context.Background()
// Create two services.
if err := registry.CreateService(a.DB, "mcns", true); err != nil {
if err := registry.CreateService(a.DB, "mcns", true, ""); err != nil {
t.Fatalf("create service: %v", err)
}
if err := registry.CreateComponent(a.DB, &registry.Component{
@@ -226,7 +226,7 @@ func TestPurgeServiceFilter(t *testing.T) {
}); err != nil {
t.Fatalf("create component: %v", err)
}
if err := registry.CreateService(a.DB, "mcr", true); err != nil {
if err := registry.CreateService(a.DB, "mcr", true, ""); err != nil {
t.Fatalf("create service: %v", err)
}
if err := registry.CreateComponent(a.DB, &registry.Component{
@@ -263,7 +263,7 @@ func TestPurgeServiceDeletedWhenEmpty(t *testing.T) {
a := newTestAgent(t, rt)
ctx := context.Background()
if err := registry.CreateService(a.DB, "mcns", true); err != nil {
if err := registry.CreateService(a.DB, "mcns", true, ""); err != nil {
t.Fatalf("create service: %v", err)
}
if err := registry.CreateComponent(a.DB, &registry.Component{
@@ -306,7 +306,7 @@ func TestPurgeServiceKeptWhenComponentsRemain(t *testing.T) {
a := newTestAgent(t, rt)
ctx := context.Background()
if err := registry.CreateService(a.DB, "mcns", true); err != nil {
if err := registry.CreateService(a.DB, "mcns", true, ""); err != nil {
t.Fatalf("create service: %v", err)
}
// Stale component (will be purged).
@@ -359,7 +359,7 @@ func TestPurgeExitedState(t *testing.T) {
a := newTestAgent(t, rt)
ctx := context.Background()
if err := registry.CreateService(a.DB, "test", true); err != nil {
if err := registry.CreateService(a.DB, "test", true, ""); err != nil {
t.Fatalf("create service: %v", err)
}
if err := registry.CreateComponent(a.DB, &registry.Component{
@@ -384,7 +384,7 @@ func TestPurgeUnknownState(t *testing.T) {
a := newTestAgent(t, rt)
ctx := context.Background()
if err := registry.CreateService(a.DB, "test", true); err != nil {
if err := registry.CreateService(a.DB, "test", true, ""); err != nil {
t.Fatalf("create service: %v", err)
}
if err := registry.CreateComponent(a.DB, &registry.Component{