fix(docker-backend): do not start scylla-manager installation

If scylla-manager is not disabled in a test config when running a test on docker
backend, the test will try to install the manager and eventually fail (this is
due to the fact that SCT installs scylla-manager server on monitor node and docker
backend doesn't support dedicated monitoring node docker instance).

The change adds a check for this situation, to be able to fail fast and
do not continue uch a test configuration on docker backend.

Closes: #9028

sdcm/sct_config.py

@@ -2349,6 +2349,8 @@ def verify_configuration(self):
         if backend in ('aws', 'gce') and db_type != 'cloud_scylla' and (
                 self.get('simulated_regions') or 0) < 2:
             self._check_multi_region_params(backend)
+        if backend == 'docker':
+            self._validate_docker_backend_parameters()
 
         self._verify_data_volume_configuration(backend)
 
@@ -2796,6 +2798,10 @@ def _verify_scylla_bench_mode_and_workload_parameters(self):
                     if "-workload=" not in cmd:
                         raise ValueError(f"Scylla-bench command {cmd} doesn't have parameter -workload")
 
+    def _validate_docker_backend_parameters(self):
+        if self.get("use_mgmt"):
+            raise ValueError(f"Scylla Manager is not supported for docker backend")
+
 
 def init_and_verify_sct_config() -> SCTConfiguration:
     sct_config = SCTConfiguration()

unit_tests/test_config.py

@@ -95,6 +95,7 @@ def test_04_check_env_parse(self):
 
     def test_05_docker(self):
         os.environ['SCT_CLUSTER_BACKEND'] = 'docker'
+        os.environ['SCT_USE_MGMT'] = 'false'
         os.environ['SCT_SCYLLA_VERSION'] = '3.0.3'
 
         conf = sct_config.SCTConfiguration()
@@ -104,6 +105,7 @@ def test_05_docker(self):
 
     def test_06a_docker_latest_no_loader(self):
         os.environ['SCT_CLUSTER_BACKEND'] = 'docker'
+        os.environ['SCT_USE_MGMT'] = 'false'
         os.environ['SCT_SCYLLA_VERSION'] = 'latest'
         os.environ['SCT_N_LOADERS'] = "0"
         docker_tag_after_processing = "fake_specific_docker_tag"
@@ -118,6 +120,7 @@ def test_06a_docker_latest_no_loader(self):
 
     def test_06b_docker_development(self):
         os.environ['SCT_CLUSTER_BACKEND'] = 'docker'
+        os.environ['SCT_USE_MGMT'] = 'false'
         os.environ['SCT_SCYLLA_VERSION'] = '666.development-blah'
         os.environ['SCT_SCYLLA_REPO_LOADER'] = RPM_URL
 
@@ -884,6 +887,7 @@ def test_31_check_network_config_azure(self):
     @pytest.mark.integration
     def test_31_check_network_config_docker(self):
         os.environ['SCT_CLUSTER_BACKEND'] = 'docker'
+        os.environ['SCT_USE_MGMT'] = 'false'
         os.environ['SCT_SCYLLA_VERSION'] = get_latest_scylla_release(product='scylla')
 
         conf = sct_config.SCTConfiguration()

unit_tests/test_config_get_version_based_on_conf.py

@@ -58,6 +58,7 @@ def function_setup():
                          )
 def test_docker(scylla_version, expected_docker_image, expected_outcome):
     os.environ['SCT_CLUSTER_BACKEND'] = 'docker'
+    os.environ['SCT_USE_MGMT'] = 'false'
     os.environ['SCT_SCYLLA_VERSION'] = scylla_version
 
     conf = sct_config.SCTConfiguration()