hydrocotyle

A new SRML-based Substrate node, ready for hacking.

Building

Install Rust:

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

Install required tools:

./scripts/init.sh

Build the WebAssembly binary:

./scripts/build.sh

Build all native code:

cargo build

Run

You can start a development chain with:

./target/debug/hydrocotyle --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.

If you want to see the multi-node consensus algorithm in action locally, then you can create a local testnet with two validator nodes for Alice and Bob, who are the initial authorities of the genesis chain that have been endowed with testnet units. Give each node a name and expose them so they are listed on the Polkadot telemetry site. You'll need two terminal windows open.

We'll start Alice's substrate node first on default TCP port 30333 with her chain database stored locally at /tmp/alice.

# Start alice node
./target/debug/hydrocotyle \
  --base-path /tmp/alice \
  --chain=local \
  --key //Alice \
  --port 30333 \
  --telemetry-url ws://telemetry.polkadot.io:1024 \
  --validator \
  --name AlicesNode

When the node starts you should see output with "Local node identity" like this:

  Local node address is: /ip4/0.0.0.0/tcp/30333/p2p/QmchUYAdZGXqq6BTEc8tr6jnSzUYdDWdcfp2V9hMy4BACH

In the second terminal, we'll start Bob's substrate node on a different TCP port of 30334, and with his chain database stored locally at /tmp/bob. We'll specify a value for the --bootnodes option that will connect his node to Alice's Local node address:

./target/debug/hydrocotyle \
  --base-path /tmp/bob \
  --chain=local \
  --key //Bob \
  --port 30334 \
  --telemetry-url ws://telemetry.polkadot.io:1024 \
  --validator \
  --name BobsNode \
  --bootnodes /ip4/0.0.0.0/tcp/30333/p2p/QmchUYAdZGXqq6BTEc8tr6jnSzUYdDWdcfp2V9hMy4BACH

Additional CLI usage options are available and may be shown by running cargo run -- --help.