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run-parachain.md

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Steps to run parachains collator locally

Note:

  • make sure use correct relay chain spec, if you want run two parachain, use spec contains three validators
  • replace all chain indentity with yours

Before start

Compile source code with command cargo build --release

Step1: export parachain genesis and wasm data

  • export genesis data
./target/release/parachain-collator export-genesis-state --parachain-id 200 > para-200-genesis
./target/release/parachain-collator export-genesis-state --parachain-id 500 > para-500-genesis
  • export wasm data
./target/release/parachain-collator export-genesis-wasm > parachain-wasm

Step2: run relay chain

  • run Alice
./target/release/polkadot --validator --chain rococo_local.json --tmp --rpc-cors all --ws-port 9944 --port 30333 --alice

Got Alice chain identity: 12D3KooWRyvvcaMhguyTTuK8MHzDRd2iZtrAtAhnTfo8V1LoLpsi

  • run Bob (set Alice as bootnodes)
./target/release/polkadot --validator --chain rococo_local.json --tmp --rpc-cors all --ws-port 9955 --port 30334 --bob \
 --bootnodes /ip4/127.0.0.1/tcp/30333/p2p/12D3KooWRyvvcaMhguyTTuK8MHzDRd2iZtrAtAhnTfo8V1LoLpsi

Got Bob chain identity 12D3KooWKv92bbFkFthsD21LUWHoSde5cd2GKWTnicCDr13N3vXq

  • run Charlie (set Alice and Bob as bootnodes)
./target/release/polkadot --validator --chain rococo_local.json --tmp --rpc-cors all --ws-port 9966 --port 30335 --charlie \
 --bootnodes /ip4/127.0.0.1/tcp/30333/p2p/12D3KooWRyvvcaMhguyTTuK8MHzDRd2iZtrAtAhnTfo8V1LoLpsi \
 --bootnodes /ip4/127.0.0.1/tcp/30334/p2p/12D3KooWKv92bbFkFthsD21LUWHoSde5cd2GKWTnicCDr13N3vXq

Got Charlie chain identity 12D3KooWD5UkeCGmsbz1oYSgc3cQdmRsiWXvHwrNmikSWsQnL5ey

Step3 Run parachain collator

Add RUST_LOG=debug RUST_BACKTRACE=1 if you want see more details

  • run the first parachain collator
./target/release/parachain-collator \
 --tmp \
 --rpc-cors all --ws-port 9977 \
 --port 30336 \
 --parachain-id 2000 \
 --validator \
 -- \
 --chain ../polkadot/rococo_local.json \
 --bootnodes /ip4/127.0.0.1/tcp/30333/p2p/12D3KooWRyvvcaMhguyTTuK8MHzDRd2iZtrAtAhnTfo8V1LoLpsi \
 --bootnodes /ip4/127.0.0.1/tcp/30334/p2p/12D3KooWKv92bbFkFthsD21LUWHoSde5cd2GKWTnicCDr13N3vXq \
 --bootnodes /ip4/127.0.0.1/tcp/30335/p2p/12D3KooWD5UkeCGmsbz1oYSgc3cQdmRsiWXvHwrNmikSWsQnL5ey

Got the first parachain identity: 12D3KooWAwk6koJP4LoPbVkBqvA1C87FhCmLkoWw4U7x3Hp3vcEY

  • run the second parachain collator (set first parachain as bootnodes)
./target/release/parachain-collator \
 --bootnodes /ip4/127.0.0.1/tcp/30336/p2p/12D3KooWAwk6koJP4LoPbVkBqvA1C87FhCmLkoWw4U7x3Hp3vcEY \
 --tmp \
 --rpc-cors all --ws-port 9988 \
 --port 30337 \
 --parachain-id 5000 \
 --validator \
 -- \
 --chain ../polkadot/rococo_local.json \
 --bootnodes /ip4/127.0.0.1/tcp/30333/p2p/12D3KooWRyvvcaMhguyTTuK8MHzDRd2iZtrAtAhnTfo8V1LoLpsi \
 --bootnodes /ip4/127.0.0.1/tcp/30334/p2p/12D3KooWKv92bbFkFthsD21LUWHoSde5cd2GKWTnicCDr13N3vXq \
 --bootnodes /ip4/127.0.0.1/tcp/30335/p2p/12D3KooWD5UkeCGmsbz1oYSgc3cQdmRsiWXvHwrNmikSWsQnL5ey

Got the second parachain identity (used if you want to run more parachains): 12D3KooWFD2W9pCp55EF78WZefxDk8XEkCXFYimVAkLysq6QU3fk

One last thing, following this workshop link to register parachain into relaychain, then you would see parachain begin to sync