diff --git a/compose.yaml b/compose.yaml
index 4b7a748..f0ae5d4 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -48,6 +48,7 @@ x-airflow-common: &airflow-common
     AIRFLOW__SCHEDULER__ENABLE_HEALTH_CHECK: "true"
     AIRFLOW_ADMIN_USER: ${AIRFLOW_ADMIN_USER:?Скопируйте .env.example в .env}
     AIRFLOW_ADMIN_PASSWORD: ${AIRFLOW_ADMIN_PASSWORD:?Скопируйте .env.example в .env}
+    CLICKHOUSE_ETL_PASSWORD: ${CLICKHOUSE_ETL_PASSWORD:?Скопируйте .env.example в .env}
   volumes:
     - ./dags:/opt/airflow/dags:ro
     - ./infra/airflow/init.sh:/opt/airflow/init.sh:ro
@@ -86,6 +87,7 @@ x-superset-common: &superset-common
     SUPERSET__SQLALCHEMY_DATABASE_URI: "postgresql+psycopg2://${SUPERSET_METADATA_USER:?Скопируйте .env.example в .env}:${SUPERSET_METADATA_PASSWORD:?Скопируйте .env.example в .env}@postgres-metadata:5432/superset"
     SUPERSET_ADMIN_USER: ${SUPERSET_ADMIN_USER:?Скопируйте .env.example в .env}
     SUPERSET_ADMIN_PASSWORD: ${SUPERSET_ADMIN_PASSWORD:?Скопируйте .env.example в .env}
+    CLICKHOUSE_BI_PASSWORD: ${CLICKHOUSE_BI_PASSWORD:?Скопируйте .env.example в .env}
   volumes:
     - ./infra/superset/superset_config.py:/app/pythonpath/superset_config.py:ro
     - ./infra/superset/init.sh:/app/infra/init.sh:ro
@@ -231,6 +233,7 @@ services:
         condition: service_healthy
     environment:
       LC_ALL: C
+      CLICKHOUSE_ETL_PASSWORD: ${CLICKHOUSE_ETL_PASSWORD:?Скопируйте .env.example в .env}
     entrypoint: ["/bin/bash", "-ec"]
     command:
       - |
@@ -243,6 +246,8 @@ services:
           printf 'Применяем %s.\n' "$${ddl_file##*/}"
           clickhouse-client \
             --host clickhouse-01 \
+            --user etl \
+            --password "$$CLICKHOUSE_ETL_PASSWORD" \
             --multiquery \
             --queries-file "$$ddl_file"
         done
diff --git a/dags/test_clickhouse.py b/dags/test_clickhouse.py
index da31590..8fb4f61 100644
--- a/dags/test_clickhouse.py
+++ b/dags/test_clickhouse.py
@@ -37,10 +37,24 @@ EXPECTED_TABLES = [
 # подключение Airflow ходит по HTTP на 8123.
 NODES = (
     ("ноде 1", "system.tables"),
-    ("ноде 2", "remote('clickhouse-02:9000', system.tables)"),
+    (
+        "ноде 2",
+        """remote(
+            'clickhouse-02:9000', 'system', 'tables',
+            {remote_user:String}, {remote_password:String}
+        )""",
+    ),
 )
 
 
+def _remote_parameters() -> dict[str, str]:
+    connection = Connection.get("clickhouse_default")
+    return {
+        "remote_user": connection.login,
+        "remote_password": connection.password,
+    }
+
+
 def _clickhouse_client():
     # clickhouse_connect импортируется внутри функции, а не наверху файла:
     # обработчик DAG разбирает этот файл снова и снова, и импорт наверху
@@ -52,8 +66,8 @@ def _clickhouse_client():
     return clickhouse_connect.get_client(
         host=connection.host,
         port=connection.port,
-        username=connection.login or "default",
-        password=connection.password or "",
+        username=connection.login,
+        password=connection.password,
         database=connection.schema or "default",
         connect_timeout=5,
         send_receive_timeout=30,
@@ -68,7 +82,8 @@ def _table_engines(client, source: str) -> list[tuple[str, str]]:
         WHERE database = 'default'
           AND name IN ('{LOCAL_TABLE}', '{DISTRIBUTED_TABLE}')
         ORDER BY name
-        """
+        """,
+        parameters=_remote_parameters(),
     )
     return result.result_rows
 
@@ -173,8 +188,12 @@ def test_clickhouse():
             node_2_rows = client.query(
                 """
                 SELECT hostName()
-                FROM remote('clickhouse-02:9000', system.one)
-                """
+                FROM remote(
+                    'clickhouse-02:9000', 'system', 'one',
+                    {remote_user:String}, {remote_password:String}
+                )
+                """,
+                parameters=_remote_parameters(),
             ).result_rows
             if len(node_2_rows) != 1:
                 raise RuntimeError(f"не удалось определить имя ноды 2: {node_2_rows}")
@@ -184,11 +203,16 @@ def test_clickhouse():
                 FROM remote(
                     'clickhouse-02:9000',
                     'default',
-                    '{DISTRIBUTED_TABLE}'
+                    '{DISTRIBUTED_TABLE}',
+                    {{remote_user:String}},
+                    {{remote_password:String}}
                 )
                 WHERE marker = {{marker:String}}
                 """,
-                parameters={"marker": written["marker"]},
+                parameters={
+                    "marker": written["marker"],
+                    **_remote_parameters(),
+                },
             ).result_rows
             if written["hostname"] == node_2_rows[0][0]:
                 raise RuntimeError(
diff --git a/infra/airflow/init.sh b/infra/airflow/init.sh
index dbc5d1c..74ec46b 100755
--- a/infra/airflow/init.sh
+++ b/infra/airflow/init.sh
@@ -26,6 +26,7 @@ runuser -u airflow -- airflow connections add clickhouse_default \
     --conn-type generic \
     --conn-host clickhouse-01 \
     --conn-port 8123 \
-    --conn-login default \
+    --conn-login etl \
+    --conn-password "$CLICKHOUSE_ETL_PASSWORD" \
     --conn-schema default \
     --conn-description "ClickHouse, нода 1; типизированный провайдер появится на этапе ETL"
diff --git a/infra/clickhouse/users.d/access.xml b/infra/clickhouse/users.d/access.xml
index b4fc45b..dc45cff 100644
--- a/infra/clickhouse/users.d/access.xml
+++ b/infra/clickhouse/users.d/access.xml
@@ -14,6 +14,8 @@
                 <query>GRANT SELECT ON system.*</query>
                 <query>GRANT CLUSTER ON *.*</query>
                 <query>GRANT REMOTE ON *.*</query>
+                <!-- В 26.3 движок Kafka требует право на внешний источник. -->
+                <query>GRANT KAFKA ON *.*</query>
             </grants>
         </etl_writer>
         <bi_reader>
diff --git a/infra/superset/import/databases/clickhouse.yaml b/infra/superset/import/databases/clickhouse.yaml
index 4330e58..b52a4a3 100644
--- a/infra/superset/import/databases/clickhouse.yaml
+++ b/infra/superset/import/databases/clickhouse.yaml
@@ -1,5 +1,5 @@
 database_name: ClickHouse
-sqlalchemy_uri: clickhousedb://default@clickhouse-02:8123/default
+sqlalchemy_uri: clickhousedb://bi@clickhouse-02:8123/default
 uuid: 4b8f2c6e-1d3a-4f5b-9c7d-2e8a1f0b3c5d
 cache_timeout: null
 expose_in_sqllab: true
diff --git a/infra/superset/superset_config.py b/infra/superset/superset_config.py
index 5ae7413..1ff180f 100644
--- a/infra/superset/superset_config.py
+++ b/infra/superset/superset_config.py
@@ -5,6 +5,15 @@ import os
 SQLALCHEMY_DATABASE_URI = os.environ["SUPERSET__SQLALCHEMY_DATABASE_URI"]
 SECRET_KEY = os.environ["SUPERSET_SECRET_KEY"]
 
+
+# Источник данных пока один, поэтому штатному хранилищу паролей Superset
+# достаточно вернуть один секрет из окружения.
+def clickhouse_password(_url):
+    return os.environ["CLICKHOUSE_BI_PASSWORD"]
+
+
+SQLALCHEMY_CUSTOM_PASSWORD_STORE = clickhouse_password
+
 SESSION_COOKIE_NAME = "superset_session"
 SESSION_COOKIE_SECURE = False
 SESSION_COOKIE_HTTPONLY = True
diff --git a/scripts/stand-services.sh b/scripts/stand-services.sh
index 9d701d4..205f627 100755
--- a/scripts/stand-services.sh
+++ b/scripts/stand-services.sh
@@ -237,6 +237,7 @@ check_airflow_probes() {
 }
 
 check_superset() {
+    local clickhouse_password
     local config
     local login
     local metadata_tables
@@ -253,6 +254,7 @@ check_superset() {
     config="$(compose config --format json 2>/dev/null || true)"
     user="$(jq -r '.services.superset.environment.SUPERSET_ADMIN_USER // empty' <<<"$config")"
     password="$(jq -r '.services.superset.environment.SUPERSET_ADMIN_PASSWORD // empty' <<<"$config")"
+    clickhouse_password="$(jq -r '.services.superset.environment.CLICKHOUSE_BI_PASSWORD // empty' <<<"$config")"
     superset_user="$(jq -r '.services["postgres-metadata"].environment.SUPERSET_METADATA_USER // empty' <<<"$config")"
     superset_password="$(jq -r '.services["postgres-metadata"].environment.SUPERSET_METADATA_PASSWORD // empty' <<<"$config")"
     port="$(published_port superset 8088)"
@@ -284,10 +286,10 @@ check_superset() {
     if [[ "$metadata_tables" == '1' ]] && \
         [[ "$metadata_engine" == "postgresql|${superset_user}|postgres-metadata|5432|superset" ]] && \
         [[ "$stored_uuid" == '4b8f2c6e-1d3a-4f5b-9c7d-2e8a1f0b3c5d' ]] && \
-        [[ "$stored_uri" == 'clickhousedb://default@clickhouse-02:8123/default' ]]; then
+        [[ "$stored_uri" == "clickhousedb://bi:${clickhouse_password}@clickhouse-02:8123/default" ]]; then
         pass 'метаданные Superset живут в Postgres, подготовленное подключение указывает на clickhouse-02'
     else
-        fail "Superset не подтвердил Postgres и подготовленное подключение к ноде 2: таблицы=${metadata_tables:-нет}, движок=${metadata_engine:-нет}, UUID=${stored_uuid:-нет}, URI=${stored_uri:-нет}"
+        fail "Superset не подтвердил Postgres и подготовленное подключение bi к ноде 2: таблицы=${metadata_tables:-нет}, движок=${metadata_engine:-нет}, UUID=${stored_uuid:-нет}"
         return
     fi
 
diff --git a/scripts/stand-smoke.sh b/scripts/stand-smoke.sh
index e6c9595..a29239b 100755
--- a/scripts/stand-smoke.sh
+++ b/scripts/stand-smoke.sh
@@ -154,6 +154,7 @@ check_grafana_datasource() {
 check_airflow() {
     local airflow_port
     local airflow_token
+    local clickhouse_password
     local config
     local connection
     local dag
@@ -166,6 +167,7 @@ check_airflow() {
     config="$(compose config --format json 2>/dev/null || true)"
     user="$(jq -r '.services["airflow-apiserver"].environment.AIRFLOW_ADMIN_USER // empty' <<<"$config")"
     password="$(jq -r '.services["airflow-apiserver"].environment.AIRFLOW_ADMIN_PASSWORD // empty' <<<"$config")"
+    clickhouse_password="$(jq -r '.services["airflow-scheduler"].environment.CLICKHOUSE_ETL_PASSWORD // empty' <<<"$config")"
     airflow_port="$(published_port airflow-apiserver 8080)"
 
     health="$(curl -sf --max-time 10 \
@@ -211,12 +213,13 @@ check_airflow() {
         .connection_id == "clickhouse_default" and
         .host == "clickhouse-01" and
         .port == 8123 and
-        .login == "default" and
+        .login == "etl" and
         .schema == "default"
     ' >/dev/null 2>&1 <<<"$connection" && \
         timeout 20s "${COMPOSE_CMD[@]}" --project-directory "$ROOT_DIR" \
             exec -T airflow-scheduler \
-            curl -sf 'http://clickhouse-01:8123/?query=SELECT%201' \
+            curl -sf -u "etl:${clickhouse_password}" \
+            'http://clickhouse-01:8123/?query=SELECT%201' \
             2>/dev/null | grep -qx '1'; then
         pass 'подготовленное подключение Airflow указывает на clickhouse-01, нода доступна из контейнера'
     else