Cannot connect to Multichain ran inside Docker

Question

I have created a Dockerfile to run a blockchain within a Docker container. The chain is created successfully, and multichaind ran, which gives an output of: 

Other nodes can connect to this node using:

multichaind dockChain2@172.17.0.2:5001

Listening for API requests on port 5002 (local only - see rpcallowip setting)

When trying to connect from another node the error received is - 

Error: Couldn't connect to the seed node 172.17.0.2 on port 5001 - please check multichaind is running at that address and that your firewall settings allow incoming connections.

I have tried exposing port 5001 in docker, and using docker ps -a shows 0.0.0.0:5001->5001/tcp under PORTS. 

 

Answer 1

(local only - see rpcallowip setting)

This is the problem. You need to use the runtime parameter rpcallowip=0.0.0.0/0 and then you can control what hosts can connect. The example I provided should allow any node.