diff --git a/masakarimonitors/instancemonitor/libvirt_handler/callback.py b/masakarimonitors/instancemonitor/libvirt_handler/callback.py
index bdd9c82..7282dd4 100644
--- a/masakarimonitors/instancemonitor/libvirt_handler/callback.py
+++ b/masakarimonitors/instancemonitor/libvirt_handler/callback.py
@@ -12,10 +12,17 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import time
+
+from openstack import connection
+from openstack import profile
 from oslo_log import log as oslo_logging
 
+from masakariclient.sdk.vmha import vmha_service
 import masakarimonitors.conf
+from masakarimonitors.i18n import _LE
 from masakarimonitors.i18n import _LI
+from masakarimonitors.i18n import _LW
 
 
 LOG = oslo_logging.getLogger(__name__)
@@ -26,11 +33,76 @@ VMHA = "vmha"
 class Callback(object):
     """Class of callback processing."""
 
+    def _get_connection(self, api_version, region, interface, auth_url,
+                        project_name, username, password, project_domain_id,
+                        user_domain_id):
+
+        prof = profile.Profile()
+        prof._add_service(vmha_service.VMHAService(version=api_version))
+        prof.set_name(VMHA, VMHA)
+        prof.set_region(VMHA, region)
+        prof.set_version(VMHA, api_version)
+        prof.set_interface(VMHA, interface)
+
+        conn = connection.Connection(auth_url=auth_url,
+                                     project_name=project_name,
+                                     username=username,
+                                     password=password,
+                                     project_domain_id=project_domain_id,
+                                     user_domain_id=user_domain_id,
+                                     profile=prof)
+        return conn
+
     def _post_event(self, retry_max, retry_interval, event):
 
-        # TODO(KengoTakahara): This method will be implemented after
-        # fixing masakariclient.sdk.
-        pass
+        LOG.info(_LI("%s"), "Send a notification.")
+
+        # Set conf value.
+        project_domain_name = CONF.keystone.project_domain_name
+        project_name = CONF.keystone.project_name
+        username = CONF.keystone.username
+        password = CONF.keystone.password
+        auth_url = CONF.keystone.auth_url
+        region = CONF.keystone.region
+        interface = CONF.callback.interface
+        api_version = CONF.callback.api_version
+
+        conn = self._get_connection(
+            api_version=api_version, region=region,
+            interface=interface, auth_url=auth_url,
+            project_name=project_name, username=username,
+            password=password, project_domain_id=project_domain_name,
+            user_domain_id=project_domain_name)
+
+        type = event['notification']['type']
+        hostname = event['notification']['hostname']
+        generated_time = event['notification']['generated_time']
+        payload = event['notification']['payload']
+
+        retry_count = 0
+        while True:
+            try:
+                response = conn.sdk.create_notification(
+                    type=type,
+                    hostname=hostname,
+                    generated_time=generated_time,
+                    payload=payload)
+
+                LOG.info(_LI("%s"), "response:%s" % (response))
+                break
+
+            except Exception as e:
+                # TODO(rkmrHonjo):
+                # We should determine retriable exceptions or not.
+                if retry_count < retry_max:
+                    LOG.warning(_LW("Retry sending a notification. (%s)"), e)
+                    retry_count = retry_count + 1
+                    time.sleep(int(retry_interval))
+                else:
+                    LOG.exception(_LE("%s"), e)
+                    break
+
+        return
 
     def libvirt_event_callback(self, eventID, detail, uuID, noticeType,
                                hostname, currentTime):