Alter IP range and share kvm

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

pkg/cninetwork/cni_network.go

@@ -42,7 +42,7 @@ const (
 	defaultBridgeName = "openfaas0"
 
 	// defaultSubnet is the default subnet used in the defaultCNIConf -- this value is set to not collide with common container networking subnets:
-	defaultSubnet = "10.62.0.0/16"
+	defaultSubnet = "10.63.0.0/16"
 
 	// defaultIfPrefix is the interface name to be created in the container
 	defaultIfPrefix = "eth"
@@ -179,7 +179,7 @@ func GetIPAddress(container string, PID uint32) (string, error) {
 //
 // Example:
 //
-// /var/run/cni/openfaas-cni-bridge/10.62.0.2
+// /var/run/cni/openfaas-cni-bridge/10.63.0.2
 //
 // nats-621
 // eth1

pkg/cninetwork/cni_network_test.go

@@ -10,7 +10,7 @@ import (
 func Test_isCNIResultForPID_Found(t *testing.T) {
 	body := `nats-621
 eth1`
-	fileName := `10.62.0.2`
+	fileName := `10.63.0.2`
 	container := "nats"
 	PID := uint32(621)
 	fullPath := filepath.Join(os.TempDir(), fileName)
@@ -38,7 +38,7 @@ eth1`
 func Test_isCNIResultForPID_NoMatch(t *testing.T) {
 	body := `nats-621
 eth1`
-	fileName := `10.62.0.3`
+	fileName := `10.63.0.3`
 	container := "gateway"
 	PID := uint32(621)
 	fullPath := filepath.Join(os.TempDir(), fileName)

pkg/provider/handlers/deploy.go

@@ -140,10 +140,7 @@ func deploy(ctx context.Context, req types.FunctionDeployment, client *container
 		memory.Limit = &v
 	}
 
-	container, err := client.NewContainer(
-		ctx,
-		name,
-		containerd.WithImage(image),
+	ctrOps := []containerd.NewContainerOpts{containerd.WithImage(image),
 		containerd.WithSnapshotter(snapshotter),
 		containerd.WithNewSnapshot(name+"-snapshot", image),
 		containerd.WithNewSpec(oci.WithImageConfig(image),
@@ -151,8 +148,18 @@ func deploy(ctx context.Context, req types.FunctionDeployment, client *container
 			oci.WithCapabilities([]string{"CAP_NET_RAW"}),
 			oci.WithMounts(mounts),
 			oci.WithEnv(envs),
+			oci.WithLinuxDevice("/dev/kvm", "rmw"),
 			withMemory(memory)),
-		containerd.WithContainerLabels(labels),
+		containerd.WithContainerLabels(labels)}
+
+	if v, ok := os.LookupEnv("FUNCTION_RUNTIME"); ok && len(v) > 0 {
+		ctrOps = append(ctrOps, containerd.WithRuntime(v, nil))
+	}
+
+	container, err := client.NewContainer(
+		ctx,
+		name,
+		ctrOps...,
 	)
 
 	if err != nil {