Unable to Use TryMe from Outside Ubuntu VM – Solace Docker Setup

PubSub+ Event Broker
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Hi All,

I’m running Solace PubSub+ in a Docker container on an Ubuntu VM using the following command: Inside the VM, I’m able to use TryMe via ws://<vm-ip>:8008 successfully.

docker run -d -p 8080:8080 -p 55555:55555 -p 8008:8008 -p 1883:1883 -p 8000:8000 -p 5672:5672 -p 9000:9000 -p 2222:2222 --shm-size=2g --env username_admin_globalaccesslevel=admin --env username_admin_password=admin --name=solace solace/solace-pubsub-standard

However, when I try to access TryMe from outside the VM, I encounter the following error.

image
image858×938 45.7 KB

All the required ports (8080, 55555, 8008, 1883, 8000, 5672, 9000, 2222, including 80, 443, and 9443) are open and accessible from outside — I can even telnet to these ports from the host machine.

Could someone please advise if I’ve missed any configuration steps or if there’s a network restriction I should look into?

Thanks in advance!

2

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Looking at the documentation, when accessing TryMe from outside a VM running a Solace software event broker in Docker, there are a few key networking considerations:

  1. When running in Docker, localhost or 127.0.0.1 from inside the container refers to the container itself, not the host machine
  2. The TryMe interface uses WebSocket protocol (ws://) to connect to the event broker
  3. Proper port mapping is required between the Docker container and the host VM

To resolve connectivity issues:

  1. Create a Docker network to enable communication between containers:
docker network create solace-net
  1. Connect your event broker container to the network:
docker network connect solace-net <container-name>

  1. Ensure proper port mapping when starting the container, particularly port 8008 for WebSocket connections

  2. When accessing TryMe from outside the VM, use the VM’s IP address instead of localhost

Relevant sources: