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Substrate Node Template

A new FRAME-based Substrate node, ready for hacking 🚀

Local Development

Follow these steps to prepare your local environment for Substrate development 🛠️

Simple Method

You can install all the required dependencies with a single command (be patient, this can take up to 30 minutes).

curl https://getsubstrate.io -sSf | bash -s -- --fast

Manual Method

Manual steps for Linux-based systems can be found below; you can find more information at substrate.dev.

Install Rust:

curl https://sh.rustup.rs -sSf | sh

Initialize your Wasm Build environment:

./scripts/init.sh

Build

Once you have prepared your local development environment, you can build the node template. Use this command to build the Wasm and native code:

cargo build --release

Playground

The Substrate Playground is an online development environment that allows you to take advantage of a pre-configured container with pre-compiled build artifacts 🤸‍♀️

Run

Single Node Development Chain

Purge any existing developer chain state:

./target/release/node-template purge-chain --dev

Start a development chain with:

./target/release/node-template --dev

Detailed logs may be shown by running the node with the following environment variables set: RUST_LOG=debug RUST_BACKTRACE=1 cargo run -- --dev.

Multi-Node Local Testnet

If you want to see the multi-node consensus algorithm in action, refer to our Start a Private Network tutorial.

Run in Docker

First, install Docker and Docker Compose.

Then run the following command to start a single node development chain.

./scripts/docker_run.sh

This command will firstly compile your code, and then start a local development network. You can also replace the default command (cargo build --release && ./target/release/node-template --dev --ws-external) by appending your own. A few useful ones are as follow.

# Run Substrate node without re-compiling
./scripts/docker_run.sh ./target/release/node-template --dev --ws-external

# Purge the local dev chain
./scripts/docker_run.sh ./target/release/node-template purge-chain --dev

# Check whether the code is compilable
./scripts/docker_run.sh cargo check

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