Install dbus if needed for protokube with kope.io

nodeup/pkg/model/protokube.go

@@ -19,6 +19,7 @@ package model
 import (
 	"bytes"
 	"fmt"
+	"k8s.io/kops/util/pkg/distributions"
 	"os"
 	"path/filepath"
 	"strings"
@@ -101,6 +102,13 @@ func (t *ProtokubeBuilder) Build(c *fi.ModelBuilderContext) error {
 	}
 	c.AddTask(service)
 
+	// DBUS is needed for the /var/run/dbus mount on kope.io images (based on Debian 9),
+	// at least until we can move to etcd-manager or start protokube as a service
+	// See https://github.com/kubernetes/kops/issues/10122#issuecomment-752969613
+	if t.Distribution == distributions.DistributionDebian9 {
+		c.AddTask(&nodetasks.Package{Name: "dbus"})
+	}
+
 	return nil
 }