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Update fork-off-substrate.md #988

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Aug 13, 2024
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Update fork-off-substrate.md #988

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Update fork-off-substrate.md
sameh-farouk Jul 14, 2024
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Update fork-off-substrate.md
sameh-farouk Jul 14, 2024
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10 changes: 7 additions & 3 deletions docs/development/fork-off-substrate.md
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Expand Up @@ -33,20 +33,24 @@ Before you start, you need to have the following items:
```bash
cp ../../substrate-node/target/debug/wbuild/tfchain-runtime/tfchain_runtime.compact.wasm ./data/runtime.wasm
```
* Run a full node for your blockchain locally (Recommended but should be fully synced) or have an external endpoint handy (but should be running with `--rpc-methods Unsafe` flag)
* Run a full node for your blockchain locally (Recommended but should be fully synced) or have an external endpoint handy (but should be running with `--rpc-methods Unsafe` flag, and depending on the chain size you may need to increase the node's default `rpc-max-response-size`)
```bash
../../substrate-node/target/debug/tfchain --chain ../../substrate-node/chainspecs/dev/chainSpecRaw.json --rpc-external --rpc-methods Unsafe
```
* Run the script

* If using a local node, simply run the script using
```bash
npm start
ALICE="true" npm start
```

* If you are using an external/non-default endpoint, you need to provide it to the script via the HTTP\_RPC\_ENDPOINT environment variable
```bash
HTTP_RPC_ENDPOINT=https://<EXTERNAL END POINT> npm start
HTTP_RPC_ENDPOINT=https://<EXTERNAL END POINT> ALICE="true" npm start
```
* If you are getting `HeadersTimeoutError`, likely on the main net, set `FORK_CHUNKS_LEVEL` to 2
```bash
FORK_CHUNKS_LEVEL=2 ALICE="true" npm start
```
* You should have the genesis file for the forked chain inside the data folder. It will be called `fork.json`.
* You can now run a new chain using this genesis file
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