diff --git a/pkg/operator/ceph/cluster/osd/spec.go b/pkg/operator/ceph/cluster/osd/spec.go
index cf694f1e7..33c3a72a1 100644
--- a/pkg/operator/ceph/cluster/osd/spec.go
+++ b/pkg/operator/ceph/cluster/osd/spec.go
@@ -157,6 +157,12 @@ func (c *Cluster) makeDeployment(osdProps osdProperties, osd OSDInfo) (*apps.Dep
 		{Name: "ROOK_OSD_UUID", Value: osd.UUID},
 		{Name: "ROOK_OSD_ID", Value: osdID},
 		{Name: "ROOK_OSD_STORE_TYPE", Value: storeType},
+		{Name: "ROOK_CEPH_MON_HOST",
+			ValueFrom: &v1.EnvVarSource{
+				SecretKeyRef: &v1.SecretKeySelector{LocalObjectReference: v1.LocalObjectReference{
+					Name: "rook-ceph-config"},
+					Key: "mon_host"}}},
+		{Name: "CEPH_ARGS", Value: "-m $(ROOK_CEPH_MON_HOST)"},
 	}...)
 	configEnvVars := append(c.getConfigEnvVars(osdProps.storeConfig, dataDir, osdProps.crushHostname, osdProps.location), []v1.EnvVar{
 		tiniEnvVar,
diff --git a/pkg/operator/ceph/cluster/osd/spec_test.go b/pkg/operator/ceph/cluster/osd/spec_test.go
index 88f70079b..73f9ce029 100644
--- a/pkg/operator/ceph/cluster/osd/spec_test.go
+++ b/pkg/operator/ceph/cluster/osd/spec_test.go
@@ -233,7 +233,7 @@ func TestStorageSpecDevicesAndDirectories(t *testing.T) {
 	assert.Equal(t, "/var/lib/rook", cont.VolumeMounts[0].MountPath)
 	assert.Equal(t, "/etc/ceph", cont.VolumeMounts[1].MountPath)
 
-	assert.Equal(t, (7 + len(k8sutil.ClusterDaemonEnvVars(c.cephVersion.Image))), len(cont.Env))
+	assert.Equal(t, (9 + len(k8sutil.ClusterDaemonEnvVars(c.cephVersion.Image))), len(cont.Env))
 
 	require.Equal(t, 2, len(podSpec.InitContainers))
 	initCont = podSpec.InitContainers[0]