Created question in FIWARE Q/A platform on 05-05-2025 at 16:05
Please, ANSWER this question AT https://stackoverflow.com/questions/79607305/fiware-iot-agent-ul-loses-service-groups-and-devices-after-container-restart

Question:
FIWARE IoT Agent-UL loses service groups and devices after container restart

Description:
I'm running a FIWARE stack using Docker containers. Here's the setup:

Orion Context Broker with MongoDB
IoT Agent-UL
Cygnus for data persistence in MySQL
All components are running in Docker containers (Docker Compose)

Everything works fine initially

I can create service groups and devices via the IoT Agent-UL API
Data is sent to Orion as expected
Cygnus saves the data in MySQL correctly

When I restart the IoT Agent-UL container (or the server running the containers), all the devices and service groups I created disappear. It’s as if they were never created. However, entities in Orion remain intact, I can see the entities collection inside MongoDB.
Docker Compose:
services:
orion:
image: telefonicaiot/fiware-orion
ports:

• "1026:1026"
  restart: always
  depends_on:
• mongo
  command: -dbURI mongodb://mongoroot:abc123@mongo:27017

mongo:
image: mongo:6.0
restart: always
volumes:

• /mongo/datadir:/data/db
  command: mongod --auth --bind_ip_all

iot-agent:
image: fiware/iotagent-ul:3.7.0
hostname: iot-agent
container_name: fiware-iot-agent
depends_on:

• mongo
  expose:
• "4041"
• "7896"
  restart: always
  ports:
• "4041:4041"
• "7896:7896"
  environment:
• IOTA_CB_HOST=orion
• IOTA_CB_PORT=1026
• IOTA_NORTH_PORT=4041
• IOTA_REGISTRY_TYPE=mongo
• IOTA_LOG_LEVEL=DEBUG
• IOTA_TIMESTAMP=true
• IOTA_CB_NGSI_VERSION=v2
• IOTA_AUTOCAST=true
• IOTA_MONGO_HOST=mongo
• IOTA_MONGO_PORT=27017
• IOTA_MONGO_DB=iotagentul
• IOTA_MONGO_USER=mongoroot
• IOTA_MONGO_PASS=abc123
• IOTA_HTTP_PORT=7896
• IOTA_PROVIDER_URL=http://iot-agent:4041

mysql-db:
image: mysql:5.7
hostname: mysql-db
container_name: db-mysql
expose:

• "3306"
  ports:
• "3306:3306"
  restart: always
  environment:
• MYSQL_ROOT_PASSWORD=abc123
• MYSQL_ROOT_HOST=%
  volumes:
• /mysql/datadir:/var/lib/mysql

cygnus:
image: fiware/cygnus-ngsi:latest
hostname: cygnus
container_name: fiware-cygnus
restart: always
depends_on:

• mysql-db
  expose:
• "5080"
  ports:
• "5050:5050"
• "5080:5080"
  environment:
• CYGNUS_MYSQL_HOST=mysql-db
• CYGNUS_MYSQL_PORT=3306
• CYGNUS_MYSQL_USER=root
• CYGNUS_MYSQL_PASS=abc123
• CYGNUS_MYSQL_SERVICE_PORT=5050
• CYGNUS_LOG_LEVEL=DEBUG
• CYGNUS_API_PORT=5080
• CYGNUS_SERVICE_PORT=5050

All services are on the same network.
What I’ve Tried:

Verified MongoDB container is using a named volume for data persistence
Checked that IoT Agent is configured to use the same MongoDB instance as Orion
Looked through the logs of the IoT Agent and MongoDB after restart. There are no obvious errors

Is there something specific I need to configure in the IoT Agent or MongoDB to persist this data? Any help is appreciated! Let me know if logs or config files would help further.