Fix a few typos in log messages and comments

a instance => an instance
occured => occurred
nessesary => necessary
temprary => temporary
Excercise => Exercise
preceeding => preceding
nu,ber => the number
Remove unnecessary 'a'

Change-Id: I9df2de6178bc73a05fea936fa2a3f26c3e6c09d3

apidocs/src/xslts/js/trc/schema/sampleManager.js

@@ -199,7 +199,7 @@ trc.schema.sampleManager = {
                               code     /* Code text to set (string) */)
     {
         //
-        // Preprocess the txt if nessesary...
+        // Preprocess the txt if necessary...
         //
         var ieVersion = trc.util.browser.detectIEVersion();
         if ((ieVersion > -1) &&

trove/extensions/mgmt/instances/service.py

@@ -181,9 +181,9 @@ class MgmtInstanceController(InstanceController):
 
     @admin_context
     def diagnostics(self, req, tenant_id, id):
-        """Return a single instance diagnostics."""
+        """Return instance diagnostics for a single instance."""
         LOG.info(_("req : '%s'\n\n") % req)
-        LOG.info(_("Showing a instance diagnostics for instance '%s'") % id)
+        LOG.info(_("Showing instance diagnostics for the instance '%s'") % id)
         LOG.info(_("id : '%s'\n\n") % id)
 
         context = req.environ[wsgi.CONTEXT_KEY]

trove/guestagent/datastore/experimental/db2/service.py

@@ -239,7 +239,7 @@ class DB2Admin(object):
                 next_marker = None
             LOG.debug("databases = %s." % str(databases))
         except exception.ProcessExecutionError as pe:
-            LOG.exception(_("An error occured listing databases: %s.") %
+            LOG.exception(_("An error occurred listing databases: %s.") %
                           pe.message)
             pass
         return databases, next_marker
@@ -275,7 +275,7 @@ class DB2Admin(object):
                         LOG.debug(pe)
                         pass
         except exception.ProcessExecutionError as pe:
-            LOG.exception(_("An error occured creating users: %s.") %
+            LOG.exception(_("An error occurred creating users: %s.") %
                           pe.message)
             pass
 
@@ -304,7 +304,7 @@ class DB2Admin(object):
                 LOG.debug("Revoked access for user:%s on database:%s." % (
                     userName, mydb.name))
             except exception.ProcessExecutionError as pe:
-                LOG.debug("Error occured while revoking access to %s." %
+                LOG.debug("Error occurred while revoking access to %s." %
                           mydb.name)
                 pass
             try:

trove/taskmanager/models.py

@@ -577,7 +577,7 @@ class FreshInstanceTasks(FreshInstance, NotifyMixin, ConfigurationMixin):
 
         This function is meant to be called with poll_until to check that
         the guest is alive before sending a 'create' message. This prevents
-        over billing a customer for a instance that they can never use.
+        over billing a customer for an instance that they can never use.
 
         Returns: boolean if the service is active.
         Raises: TroveError if the service is in a failure state.

trove/tests/api/mgmt/hosts.py

@@ -113,7 +113,7 @@ class HostsMgmtCommands(object):
         assert_not_equal(len(result), 0,
                          "list hosts should not be empty: %s" % str(result))
         hosts = []
-        # Find a host with a instanceCount > 0
+        # Find a host with an instanceCount > 0
         for host in result:
             msg = 'Host: %s, Count: %s' % (host.name, host.instanceCount)
             hosts.append(msg)

trove/tests/unittests/guestagent/test_configuration.py

@@ -96,7 +96,7 @@ class TestConfigurationOverrideStrategy(trove_testtools.TestCase):
     def tearDown(self):
         trove_testtools.TestCase.tearDown(self)
 
-        # Remove temprary files in the LIFO order.
+        # Remove temporary files in the LIFO order.
         while self._temp_files_paths:
             try:
                 os.remove(self._temp_files_paths.pop())

trove/tests/unittests/guestagent/test_dbaas.py

@@ -3064,8 +3064,8 @@ class VerticaAppTest(testtools.TestCase):
         with patch.object(self.app, 'read_config',
                           return_value=self.test_config):
             self.app.install_cluster(members=['member1', 'member2'])
-        # Verifying nu,ber of shell calls,
-        # as command has already been tested in preceeding tests
+        # Verifying the number of shell calls,
+        # as command has already been tested in preceding tests
         self.assertEqual(5, vertica_system.shell_execute.call_count)
 
     def test__enable_db_on_boot(self):

trove/tests/unittests/upgrade/test_models.py

@@ -68,7 +68,7 @@ class TestUpgradeModel(trove_testtools.TestCase):
     @patch.object(rpc, 'get_client')
     def _assert_create_with_metadata(self, mock_client, api_upgrade_mock,
                                      metadata=None):
-        """Excercise UpgradeMessageSender.create() call.
+        """Exercise UpgradeMessageSender.create() call.
         """
         context = Mock()