Substrate Cumulus Parachain Template

A new Cumulus-based Substrate node, ready for hacking ☁️

Upstream

This project is a fork of the Substrate Developer Hub Node Template.

Build & Run

Follow these steps to prepare a local Substrate development environment 🛠️

Setup

If necessary, refer to the setup instructions at the Substrate Developer Hub.

Build

Once the development environment is set up, build the node template. This command will build the Wasm and native code:

cargo build --release

Run

Local Testnet

Polkadot (rococo-branch):

./target/release/polkadot build-spec --chain rococo-local --raw --disable-default-bootnode > rococo_local.json

./target/release/polkadot --chain ./rococo_local.json -d cumulus_relay1 --validator --bob --port 50555
./target/release/polkadot --chain ./rococo_local.json -d cumulus_relay0 --validator --alice --port 50556

Substrate Parachain Template:

# this command assumes the chain spec is in a directory named polkadot that is a sibling of the working directory
./target/release/parachain-collator -d local-test --validator --ws-port 9945 --parachain-id 200 -- --chain ../polkadot/rococo_local.json

Or, start a staging chain with detailed logging:

RUST_LOG=debug RUST_BACKTRACE=1 ./target/release/parachain-collator -lruntime=debug --chain staging -- --chain ../polkadot/rococo_local.json

Learn More

Refer to the upstream Substrate Developer Hub Node Template to learn more about the structure of this project, the capabilities it encapsulates and the way in which those capabilities are implemented. You can learn more about The Path of Parachain Block on the official Polkadot Blog.