diff --git a/installers/charm/osm-nbi/tests/integration/test_charm.py b/installers/charm/osm-nbi/tests/integration/test_charm.py
new file mode 100644
index 0000000..ac35ea6
--- /dev/null
+++ b/installers/charm/osm-nbi/tests/integration/test_charm.py
@@ -0,0 +1,197 @@
+#!/usr/bin/env python3
+# Copyright 2022 Canonical Ltd.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: legal@canonical.com
+#
+# To get in touch with the maintainers, please contact:
+# osm-charmers@lists.launchpad.net
+#
+# Learn more about testing at: https://juju.is/docs/sdk/testing
+
+import asyncio
+import logging
+import shlex
+from pathlib import Path
+
+import pytest
+import yaml
+from pytest_operator.plugin import OpsTest
+
+logger = logging.getLogger(__name__)
+
+METADATA = yaml.safe_load(Path("./metadata.yaml").read_text())
+NBI_APP = METADATA["name"]
+KAFKA_CHARM = "kafka-k8s"
+KAFKA_APP = "kafka"
+MARIADB_CHARM = "charmed-osm-mariadb-k8s"
+MARIADB_APP = "mariadb"
+MONGO_DB_CHARM = "mongodb-k8s"
+MONGO_DB_APP = "mongodb"
+KEYSTONE_CHARM = "osm-keystone"
+KEYSTONE_APP = "keystone"
+PROMETHEUS_CHARM = "osm-prometheus"
+PROMETHEUS_APP = "prometheus"
+ZOOKEEPER_CHARM = "zookeeper-k8s"
+ZOOKEEPER_APP = "zookeeper"
+INGRESS_CHARM = "nginx-ingress-integrator"
+INGRESS_APP = "ingress"
+APPS = [KAFKA_APP, MONGO_DB_APP, MARIADB_APP, ZOOKEEPER_APP, KEYSTONE_APP, PROMETHEUS_APP, NBI_APP]
+
+
+@pytest.mark.abort_on_fail
+async def test_nbi_is_deployed(ops_test: OpsTest):
+    charm = await ops_test.build_charm(".")
+    resources = {"nbi-image": METADATA["resources"]["nbi-image"]["upstream-source"]}
+
+    await asyncio.gather(
+        ops_test.model.deploy(
+            charm, resources=resources, application_name=NBI_APP, series="focal"
+        ),
+        ops_test.model.deploy(KAFKA_CHARM, application_name=KAFKA_APP, channel="stable"),
+        ops_test.model.deploy(MONGO_DB_CHARM, application_name=MONGO_DB_APP, channel="stable"),
+        ops_test.model.deploy(MARIADB_CHARM, application_name=MARIADB_APP, channel="stable"),
+        ops_test.model.deploy(ZOOKEEPER_CHARM, application_name=ZOOKEEPER_APP, channel="stable"),
+        ops_test.model.deploy(PROMETHEUS_CHARM, application_name=PROMETHEUS_APP, channel="stable"),
+    )
+    # Keystone charm has to be deployed differently since
+    # bug https://github.com/juju/python-libjuju/issues/766
+    # prevents setting correctly the resources
+    cmd = f"juju deploy {KEYSTONE_CHARM} {KEYSTONE_APP} --resource keystone-image=opensourcemano/keystone:12"
+    await ops_test.run(*shlex.split(cmd), check=True)
+
+    async with ops_test.fast_forward():
+        await ops_test.model.wait_for_idle(
+            apps=APPS,
+        )
+    assert ops_test.model.applications[NBI_APP].status == "blocked"
+    unit = ops_test.model.applications[NBI_APP].units[0]
+    assert unit.workload_status_message == "need kafka, mongodb, prometheus, keystone relations"
+
+    logger.info("Adding relations for other components")
+    await ops_test.model.add_relation(KAFKA_APP, ZOOKEEPER_APP)
+    await ops_test.model.add_relation(MARIADB_APP, KEYSTONE_APP)
+
+    logger.info("Adding relations")
+    await ops_test.model.add_relation(NBI_APP, MONGO_DB_APP)
+    await ops_test.model.add_relation(NBI_APP, KAFKA_APP)
+    await ops_test.model.add_relation(NBI_APP, PROMETHEUS_APP)
+    await ops_test.model.add_relation(NBI_APP, KEYSTONE_APP)
+
+    async with ops_test.fast_forward():
+        await ops_test.model.wait_for_idle(
+            apps=APPS,
+            status="active",
+        )
+
+
+@pytest.mark.abort_on_fail
+async def test_nbi_scales_up(ops_test: OpsTest):
+    logger.info("Scaling up osm-nbi")
+    expected_units = 3
+    assert len(ops_test.model.applications[NBI_APP].units) == 1
+    await ops_test.model.applications[NBI_APP].scale(expected_units)
+    async with ops_test.fast_forward():
+        await ops_test.model.wait_for_idle(
+            apps=[NBI_APP], status="active", wait_for_exact_units=expected_units
+        )
+
+
+@pytest.mark.abort_on_fail
+@pytest.mark.parametrize(
+    "relation_to_remove", [KAFKA_APP, MONGO_DB_APP, PROMETHEUS_APP, KEYSTONE_APP]
+)
+async def test_nbi_blocks_without_relation(ops_test: OpsTest, relation_to_remove):
+    logger.info("Removing relation: %s", relation_to_remove)
+    # mongoDB relation is named "database"
+    local_relation = relation_to_remove
+    if local_relation == MONGO_DB_APP:
+        local_relation = "database"
+    await asyncio.gather(
+        ops_test.model.applications[relation_to_remove].remove_relation(local_relation, NBI_APP)
+    )
+    async with ops_test.fast_forward():
+        await ops_test.model.wait_for_idle(apps=[NBI_APP])
+    assert ops_test.model.applications[NBI_APP].status == "blocked"
+    for unit in ops_test.model.applications[NBI_APP].units:
+        assert unit.workload_status_message == f"need {relation_to_remove} relation"
+    await ops_test.model.add_relation(NBI_APP, relation_to_remove)
+    async with ops_test.fast_forward():
+        await ops_test.model.wait_for_idle(
+            apps=APPS,
+            status="active",
+        )
+
+
+@pytest.mark.abort_on_fail
+async def test_nbi_action_debug_mode_disabled(ops_test: OpsTest):
+    async with ops_test.fast_forward():
+        await ops_test.model.wait_for_idle(
+            apps=APPS,
+            status="active",
+        )
+    logger.info("Running action 'get-debug-mode-information'")
+    action = (
+        await ops_test.model.applications[NBI_APP]
+        .units[0]
+        .run_action("get-debug-mode-information")
+    )
+    async with ops_test.fast_forward():
+        await ops_test.model.wait_for_idle(apps=[NBI_APP])
+    status = await ops_test.model.get_action_status(uuid_or_prefix=action.entity_id)
+    assert status[action.entity_id] == "failed"
+
+
+@pytest.mark.abort_on_fail
+async def test_nbi_action_debug_mode_enabled(ops_test: OpsTest):
+    await ops_test.model.applications[NBI_APP].set_config({"debug-mode": "true"})
+    async with ops_test.fast_forward():
+        await ops_test.model.wait_for_idle(
+            apps=APPS,
+            status="active",
+        )
+    logger.info("Running action 'get-debug-mode-information'")
+    # list of units is not ordered
+    unit_id = list(
+        filter(
+            lambda x: (x.entity_id == f"{NBI_APP}/0"), ops_test.model.applications[NBI_APP].units
+        )
+    )[0]
+    action = await unit_id.run_action("get-debug-mode-information")
+    async with ops_test.fast_forward():
+        await ops_test.model.wait_for_idle(apps=[NBI_APP])
+    status = await ops_test.model.get_action_status(uuid_or_prefix=action.entity_id)
+    message = await ops_test.model.get_action_output(action_uuid=action.entity_id)
+    assert status[action.entity_id] == "completed"
+    assert "command" in message
+    assert "password" in message
+
+
+@pytest.mark.abort_on_fail
+async def test_nbi_integration_ingress(ops_test: OpsTest):
+    await asyncio.gather(
+        ops_test.model.deploy(INGRESS_CHARM, application_name=INGRESS_APP, channel="beta"),
+    )
+    async with ops_test.fast_forward():
+        await ops_test.model.wait_for_idle(
+            apps=APPS + [INGRESS_APP],
+        )
+
+    await ops_test.model.add_relation(NBI_APP, INGRESS_APP)
+    async with ops_test.fast_forward():
+        await ops_test.model.wait_for_idle(
+            apps=APPS + [INGRESS_APP],
+            status="active",
+        )
diff --git a/installers/charm/osm-nbi/tests/unit/test_charm.py b/installers/charm/osm-nbi/tests/unit/test_charm.py
index d9440a0..87afafa 100644
--- a/installers/charm/osm-nbi/tests/unit/test_charm.py
+++ b/installers/charm/osm-nbi/tests/unit/test_charm.py
@@ -87,13 +87,13 @@
     # Add kafka relation
     relation_id = harness.add_relation("kafka", "kafka")
     harness.add_relation_unit(relation_id, "kafka/0")
-    harness.update_relation_data(relation_id, "kafka", {"host": "kafka", "port": 9092})
+    harness.update_relation_data(relation_id, "kafka", {"host": "kafka", "port": "9092"})
     relation_ids.append(relation_id)
     # Add prometheus relation
     relation_id = harness.add_relation("prometheus", "prometheus")
     harness.add_relation_unit(relation_id, "prometheus/0")
     harness.update_relation_data(
-        relation_id, "prometheus", {"hostname": "prometheus", "port": 9090}
+        relation_id, "prometheus", {"hostname": "prometheus", "port": "9090"}
     )
     relation_ids.append(relation_id)
     # Add keystone relation
diff --git a/installers/charm/osm-nbi/tox.ini b/installers/charm/osm-nbi/tox.ini
index b791e14..c1bada0 100644
--- a/installers/charm/osm-nbi/tox.ini
+++ b/installers/charm/osm-nbi/tox.ini
@@ -21,7 +21,7 @@
 [tox]
 skipsdist=True
 skip_missing_interpreters = True
-envlist = lint, unit
+envlist = lint, unit, integration
 
 [vars]
 src_path = {toxinidir}/src/
@@ -92,4 +92,4 @@
     pytest-operator
     -r{toxinidir}/requirements.txt
 commands =
-    pytest -v --tb native --ignore={[vars]tst_path}unit --log-cli-level=INFO -s {posargs}
+    pytest -v --tb native --ignore={[vars]tst_path}unit --log-cli-level=INFO -s {posargs} --cloud microk8s