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Join Testnet from your GCP

1.) Download node binary from Github​

2.) Expose your P2P port​

Run terminal command ufw (Uncomplicated Firewall) to expose the P2P port for each of your nodes. In this example we are running one node with P2P port: 30333

sudo ufw allow 30333/tcp

3.) Add firewall policy for exposed P2P ports​

  • Go to firewall policies in GCP.  

  • Add an Engress firewall policy so nodes can send data.  

  • Add an Ingress firewall policy so nodes can receive data.  

4.) Start node to test connection to bootnode​

Include the details collected from the bootnode operator to the command for running your node.

For example: A bootnode operator provides the following details about itself:

  • Local ID: 12D3KooWBzWscCLMT4UfGrXViAKXEJyQJJm8Hccd6o5xpwZvzwgR
  • Public IP: 34.16.183.82
  • P2P port: 30333

This would be the command for running your node and connecting to the bootnode:

./target/release/node-unitchain \
--base-path /tmp/node01 \
--chain ./customSpecRaw.json \
--port 30333 \
--rpc-port 9944 \
--bootnodes /ip4/34.16.183.82/tcp/30333/p2p/12D3KooWBzWscCLMT4UfGrXViAKXEJyQJJm8Hccd6o5xpwZvzwgR \
--validator \
--rpc-methods Unsafe \
--rpc-cors all \
--rpc-external

After verifying that the node works, Ctrl-C to stop the node.

5.) Insert keys into keystore using node binary​

Aura

./node-unitchain key insert \
--base-path /tmp/node01 \
--chain customSpecRaw.json \
--scheme Sr25519 \
--suri  PRIVATE KEY \
--key-type aura

Grandpa

./node-unitchain key insert \
--base-path /tmp/node01 \
--chain customSpecRaw.json \
--scheme Ed25519 \
--suri PRIVATE KEY \
--key-type gran

Verify you have inserted the keys correctly.

ls /tmp/node01/chains/local_testnet/keystore

6.) Run node in background​

Make sure to include details from bootnode operator.

nohup ./node-unitchain \
--base-path /tmp/node01 \
--chain ./customSpecRaw.json \
--port 30333 \
--rpc-port 9944 \
--bootnodes /ip4/34.16.183.82/tcp/30333/p2p/12D3KooWBzWscCLMT4UfGrXViAKXEJyQJJm8Hccd6o5xpwZvzwgR \
--validator \
--rpc-methods=Unsafe \
--name MyNode01 \
--rpc-cors all \
--rpc-external >/dev/null 2>&1 &