Worker is not connected issue

Hey all,
We were going through the documentation for the NVIDIA Aerial Digital Twin application.
We proceeded till loading Tokyo scene, dropping UEs and RU in the scene and configuring antenna propoerties for the same. When selected the “Generate UEs” tab on the toolbar, the following error shows up.

** Worker is not connected. Please connect to worker first.**

Can you kindly help us in resolving this issue

I later went through the documentation for adding worker through the wheel icon on the tray.

Further, I am getting this error.

Can you help us with this

Thank you


Screenshot from 2024-06-25 15-51-32

@shivshankar
Before you attach a worker, you need to connect to the clickhouse . Please make sure that this icon is green

.

If connecting to the database failse, please check if the clikchouse is running in the backend. To check, please issue “docker ps” command on a linux terminal where the backend is supposed to run.

When i tried configuring the DB initially, the same dialogue error pops up.

On checking the docker ps command in terminal, I get the following:

Can you kindly tell us if there is anything missing

Thanks and regards

Yes, the clickhouse server is missing. Please copy the contents below into text file and name it as docker-compose_clickhouse.yml. Place the file into your backend into the backend_bundle folder. Then at linux command prompt run
docker compose docker-compose_clickhouse.yml up

Please post the console message.

Contents of docker-compose_clickhouse.yml

services:
clickhouse:
image: clickhouse/clickhouse-server
volumes:
- database:/var/lib/clickhouse
- ./clickhouse_aerial_config.xml:/etc/clickhouse-server/config.d/clickhouse_aerial_config.xml
- /var/log/clickhouse-server:/var/log/clickhouse-server
ports:
- 9000:9000
ulimits:
nofile:
soft: 262144
hard: 262144

volumes:
database:

Thank you for the solution.

I would like to know about channel generation and will start a new thread for the same.