diff --git a/tempest/common/isolated_creds.py b/tempest/common/isolated_creds.py
index 95d12c1..38834ff 100644
--- a/tempest/common/isolated_creds.py
+++ b/tempest/common/isolated_creds.py
@@ -146,18 +146,28 @@
         else:
             self.identity_admin_client.tenants.delete(tenant)
 
-    def _create_creds(self, suffix=None, admin=False):
-        data_utils.rand_name_root = data_utils.rand_name(self.name)
-        if suffix:
-            data_utils.rand_name_root += suffix
-        tenant_name = data_utils.rand_name_root + "-tenant"
+    def _create_creds(self, suffix="", admin=False):
+        """Create random credentials under the following schema.
+
+        If the name contains a '.' is the full class path of something, and
+        we don't really care. If it isn't, it's probably a meaningful name,
+        so use it.
+
+        For logging purposes, -user and -tenant are long and redundant,
+        don't use them. The user# will be sufficient to figure it out.
+        """
+        if '.' in self.name:
+            root = ""
+        else:
+            root = self.name
+
+        tenant_name = data_utils.rand_name(root) + suffix
         tenant_desc = tenant_name + "-desc"
         tenant = self._create_tenant(name=tenant_name,
                                      description=tenant_desc)
-        if suffix:
-            data_utils.rand_name_root += suffix
-        username = data_utils.rand_name_root + "-user"
-        email = data_utils.rand_name_root + "@example.com"
+
+        username = data_utils.rand_name(root) + suffix
+        email = data_utils.rand_name(root) + suffix + "@example.com"
         user = self._create_user(username, self.password,
                                  tenant, email)
         if admin:
diff --git a/tempest/common/utils/data_utils.py b/tempest/common/utils/data_utils.py
index 2b2963c..cd32720 100644
--- a/tempest/common/utils/data_utils.py
+++ b/tempest/common/utils/data_utils.py
@@ -30,8 +30,12 @@
     return uuid.uuid4().hex
 
 
-def rand_name(name='test'):
-    return name + "-tempest-" + str(random.randint(1, 0x7fffffff))
+def rand_name(name=''):
+    randbits = str(random.randint(1, 0x7fffffff))
+    if name:
+        return name + '-' + randbits
+    else:
+        return randbits
 
 
 def rand_int_id(start=0, end=0x7fffffff):
diff --git a/tempest/scenario/manager.py b/tempest/scenario/manager.py
index 04882f3..ca3a2db 100644
--- a/tempest/scenario/manager.py
+++ b/tempest/scenario/manager.py
@@ -233,7 +233,7 @@
     def setUpClass(cls):
         super(OfficialClientTest, cls).setUpClass()
         cls.isolated_creds = isolated_creds.IsolatedCreds(
-            __name__, tempest_client=False,
+            cls.__name__, tempest_client=False,
             network_resources=cls.network_resources)
 
         username, password, tenant_name = cls.credentials()