diff --git a/pkg/asset/machines/openstack/openstack.go b/pkg/asset/machines/openstack/openstack.go
new file mode 100644
index 0000000000..132d224b15
--- /dev/null
+++ b/pkg/asset/machines/openstack/openstack.go
@@ -0,0 +1,74 @@
+// Package openstack generates Machine objects for openstack.
+package openstack
+
+import (
+	"text/template"
+
+	"github.com/openshift/installer/pkg/types"
+)
+
+// Config is used to generate the machine.
+type Config struct {
+	ClusterName string
+	Replicas    int64
+	Image       string
+	Tags        map[string]string
+	Region      string
+	Machine     types.OpenStackMachinePoolPlatform
+}
+
+// WorkerMachineSetTmpl is template for worker machineset.
+var WorkerMachineSetTmpl = template.Must(template.New("openstack-worker-machineset").Parse(`
+apiVersion: cluster.k8s.io/v1alpha1
+kind: MachineSet
+metadata:
+  name: {{.ClusterName}}-worker-0
+  namespace: openshift-cluster-api
+  labels:
+    sigs.k8s.io/cluster-api-cluster: {{.ClusterName}}
+    sigs.k8s.io/cluster-api-machine-role: worker
+    sigs.k8s.io/cluster-api-machine-type: worker
+spec:
+  replicas: {{.Replicas}}
+  selector:
+    matchLabels:
+      sigs.k8s.io/cluster-api-machineset: worker
+      sigs.k8s.io/cluster-api-cluster: {{.ClusterName}}
+  template:
+    metadata:
+      labels:
+        sigs.k8s.io/cluster-api-machineset: worker
+        sigs.k8s.io/cluster-api-cluster: {{.ClusterName}}
+        sigs.k8s.io/cluster-api-machine-role: worker
+        sigs.k8s.io/cluster-api-machine-type: worker
+    spec:
+      providerConfig:
+        value:
+          apiVersion: openstack.cluster.k8s.io/v1alpha1
+          kind: OpenStackMachineProviderConfig
+          image:
+            id: {{.Image}}
+          flavor: {{.Machine.FlavorName}}
+          placement:
+            region: {{.Region}}
+          subnet:
+            filters:
+            - name: "tag:Name"
+              values:
+              - "{{.ClusterName}}-worker-*"
+          tags:
+{{- range $key,$value := .Tags}}
+            - name: "{{$key}}"
+              value: "{{$value}}"
+{{- end}}
+          securityGroups:
+            - filters:
+              - name: "tag:Name"
+                values:
+                - "{{.ClusterName}}_worker_sg"
+          userDataSecret:
+            name: worker-user-data
+      versions:
+        kubelet: ""
+        controlPlane: ""
+`))
diff --git a/pkg/asset/machines/worker.go b/pkg/asset/machines/worker.go
index 8a18e5cd10..0a51c6605e 100644
--- a/pkg/asset/machines/worker.go
+++ b/pkg/asset/machines/worker.go
@@ -14,6 +14,7 @@ import (
 	"github.com/openshift/installer/pkg/asset/installconfig"
 	"github.com/openshift/installer/pkg/asset/machines/aws"
 	"github.com/openshift/installer/pkg/asset/machines/libvirt"
+	"github.com/openshift/installer/pkg/asset/machines/openstack"
 	"github.com/openshift/installer/pkg/rhcos"
 	"github.com/openshift/installer/pkg/types"
 )
@@ -24,6 +25,12 @@ func defaultAWSMachinePoolPlatform() types.AWSMachinePoolPlatform {
 	}
 }
 
+func defaultOpenStackMachinePoolPlatform() types.OpenStackMachinePoolPlatform {
+	return types.OpenStackMachinePoolPlatform{
+		FlavorName: "m1.medium",
+	}
+}
+
 // Worker generates the machinesets for `worker` machine pool.
 type Worker struct {
 	MachineSetRaw     []byte
@@ -103,6 +110,24 @@ func (w *Worker) Generate(dependencies asset.Parents) error {
 			Platform:    *ic.Platform.Libvirt,
 		}
 		w.MachineSetRaw = applyTemplateData(libvirt.WorkerMachineSetTmpl, config)
+	case "openstack":
+		config := openstack.Config{
+			ClusterName: ic.ObjectMeta.Name,
+			Replicas:    numOfWorkers,
+			Image:       ic.Platform.OpenStack.BaseImage,
+			Region:      ic.Platform.OpenStack.Region,
+			Machine:     defaultOpenStackMachinePoolPlatform(),
+		}
+
+		tags := map[string]string{
+			"tectonicClusterID": ic.ClusterID,
+		}
+		config.Tags = tags
+
+		config.Machine.Set(ic.Platform.OpenStack.DefaultMachinePlatform)
+		config.Machine.Set(pool.Platform.OpenStack)
+
+		w.MachineSetRaw = applyTemplateData(openstack.WorkerMachineSetTmpl, config)
 	default:
 		return fmt.Errorf("invalid Platform")
 	}
diff --git a/pkg/types/installconfig.go b/pkg/types/installconfig.go
index 7daa719ea6..6c1f6f7e94 100644
--- a/pkg/types/installconfig.go
+++ b/pkg/types/installconfig.go
@@ -137,6 +137,11 @@ type OpenStackPlatform struct {
 	// Region specifies the OpenStack region where the cluster will be created.
 	Region string `json:"region"`
 
+	// DefaultMachinePlatform is the default configuration used when
+	// installing on OpenStack for machine pools which do not define their own
+	// platform configuration.
+	DefaultMachinePlatform *OpenStackMachinePoolPlatform `json:"defaultMachinePlatform,omitempty"`
+
 	// VPCID specifies the vpc to associate with the cluster.
 	// If empty, new vpc will be created.
 	// +optional