This looks like a firewall issue to me. it's required to open DSS port for external sources as
You can quickly open it from you GCP Console by :
- Going to your VM in Google compute engine and open your instance details
- edit your VM and add a tag dedicated to DSS (you will need it to define network rules ) for example dku-dss and save.
- In your instance details , from the network interface section, open your network interface
- add the firewall rule that allows port 11000 from your IP address , and set the tag dku-dss as target for your rule and save it.
If you still can't access to DSS, check also your VM local firewall (ufw by default ) if this one is active , you will have to allow DSS port with this command:
sudo ufw allow 11000
Note that if you use a regular ssh client to access your machine you can also create a tunnel to access your DSS for testing purpose . from your terminal you would have to run
ssh [email protected]$yourGCPmachiner -L 11000:localhost:11000
Once your connection is established you can go to your browser and access to DSS using url http://localhost:11000.
Beware that the recommended action is to open your GCP firewall and your virtual machine firewall.