Update accessing nova compute logs for RBD check

Nova compute logs are no longer accessible via accessing the
nova_compute container downstream. Instead the nova service logs are
available directly on the host via journalctl. Updated LogParserClient
to conditionally access nova service logs either via host or container.

Change-Id: I2cf0ded367e85fca1e49a2cab48adb23b1ed9807

.zuul.yaml

@@ -168,6 +168,7 @@
         whitebox-tempest-plugin: https://opendev.org/openstack/whitebox-tempest-plugin.git
       tempest_test_regex: '^whitebox_tempest_plugin.api.compute.test_rbd_direct_download'
       devstack_localrc:
+        NOVA_SERVICE_REPORT_INTERVAL: 10
         COMPUTE_FEATURE_RBD_DOWNLOAD: True
         TEMPEST_PLUGINS: /opt/stack/whitebox-tempest-plugin
         WHITEBOX_PRIVKEY_PATH: /home/tempest/.ssh/id_rsa

whitebox_tempest_plugin/api/compute/test_rbd_direct_download.py

@@ -38,6 +38,10 @@ class TestRBDDirectDownload(base.BaseWhiteboxComputeTest):
             raise cls.skipException(skip_msg)
 
     def test_rbd_logs_and_conf(self):
+        with self.config_all_computes(
+            ('libvirt', 'images_type', 'default'),
+        ):
+
             base_server = self.create_test_server(wait_until='ACTIVE')
             image = self.create_image_from_server(
                 base_server['id'],
@@ -52,16 +56,17 @@ class TestRBDDirectDownload(base.BaseWhiteboxComputeTest):
 
             # Grab image id from newly created server
             detailed_server_data = \
-            self.os_admin.servers_client.show_server(server['id'])['server']
-        image_id = detailed_server_data['image']['id']
+                self.os_admin.servers_client.show_server(server['id'])
+            image_id = detailed_server_data['server']['image']['id']
 
             host = self.get_host_for_server(server['id'])
-        host_sm = clients.NovaServiceManager(host, 'nova-compute',
-                                             self.os_admin.services_client)
+            host_sm = clients.NovaServiceManager(
+                host, 'nova-compute', self.os_admin.services_client)
             rbd_pool = host_sm.get_conf_opt('glance', 'rbd_pool')
             # Assert RBD direct download conf options
             self.assertEqual('images', rbd_pool)
-        self.assertTrue(host_sm.get_conf_opt('glance', 'enable_rbd_download'))
+            self.assertTrue(host_sm.get_conf_opt('glance',
+                                                 'enable_rbd_download'))
             log_query_string = f"Attempting to export RBD image: " \
                 f"[[]pool_name: {rbd_pool}[]] [[]image_uuid: " \
                 f"{image_id}[]]"

whitebox_tempest_plugin/config.py

@@ -153,6 +153,10 @@ nova_compute_opts = [
         help="Name of the utility to run LogParserClient commands. "
              "Currently, supported values are 'journalctl' (default) "
              "for devstack and 'zgrep' for TripleO"),
+    cfg.StrOpt(
+        'journalctl_unit',
+        default="devstack@n-cpu",
+        help="Unit to access when doing log query via journalctl"),
     cfg.StrOpt(
         'state_path',
         default="/var/lib/nova",

whitebox_tempest_plugin/services/clients.py

@@ -89,10 +89,14 @@ class LogParserClient(SSHClient):
     def parse(self, query_string):
         log_query_command = CONF.whitebox_nova_compute.log_query_command
         if log_query_command == 'zgrep':
-            command = 'sh -c "zgrep \'%s\' /var/log/nova/*"' % query_string
+            command = f'sh -c "zgrep \'{query_string}\' /var/log/nova/*"'
         else:
-            command = 'journalctl -u devstack@n-cpu -g \'%s\'' % query_string
-        return self.execute(command, container_name='nova_compute', sudo=True)
+            unit = CONF.whitebox_nova_compute.journalctl_unit
+            command = f'journalctl -u {unit} -g \'{query_string}\''
+            services_dict = self.host_parameters.get('services', {})
+            nova_compute_srvc = services_dict.get('nova-compute')
+            container_name = nova_compute_srvc.get('container_name')
+        return self.execute(command, container_name=container_name, sudo=True)
 
 
 class QEMUImgClient(SSHClient):