HackMD
Adding Ephemery to Lodestar: running with Geth
tldr;
This time when Lodestar launches on ephemery and looks for the EL client, I want it to find Geth.
pk910's initial Lodestar configuration essentially downloads the latest ephemery settings based on whatever is saved at https://ephemery.dev/latest/genesis.ssz and https://ephemery.dev/latest/bootstrap_nodes.txt.
export const depositContractDeployBlock = 0;
export const genesisFileUrl = "https://ephemery.dev/latest/genesis.ssz";
export const bootnodesFileUrl = "https://ephemery.dev/latest/bootstrap_nodes.txt";
First up, I want to check I can use this approach to sync with Geth.
Then, when I am sure that my Lodestar launch command correctly gathers the latest ephemery settings, my plan is to replace the ephemery downloads with the genesis included inside the Lodestar executable.
Syncing with Geth
-
Get the latest ephemery version
https://github.com/ephemery-testnet/ephemery-genesis/releases -
Delete geth datadir and make sure that Geth is initialized with the latest ephemery version
./geth --datadir ../gethData init ../ephemery/genesis.json -
Launch Geth
./geth --datadir ../gethData --port 30303 --http --http.addr 0.0.0.0 --http.port 8545 --http.api eth,net,personal,web3 --ws --ws.addr 0.0.0.0 --ws.port 8546 --ws.api eth,net,personal,web3 --authrpc.jwtsecret=/tmp/jwtsecret --syncmode=full --bootnodes "enode://0f2c301a9a3f9fa2ccfa362b79552c052905d8c2982f707f46cd29ece5a9e1c14ecd06f4ac951b228f059a43c6284a1a14fce709e8976cac93b50345218bf2e9@135.181.140.168:30343" --networkid 39438090 -
Launch Lodestar
./lodestar beacon --network ephemery
Troubleshooting Lodestar error
ECONNREFUSED ::1:8551
Lodestar won't connect to port 8551, whether Geth is running or not.
Checking the logs, the Lodestar root isn't the latest genesis state root that I can see in the ephemery settings.
The datadir path can be seen in the logs
Connected to LevelDB database path=/Users/hollyatkinson/.local/share/lodestar/ephemery/chain-db
- Deleted datadir and tried again.
Lodestar logs:
stateRoot=0xc37ddf2675dc311def8a4011fb1e066b11960c99b2b5a64cc5826730764b9e91
State root is still incorrect;
- Check link refers to latest genesis ssz (server run by pk910, he is pushing the latest files there automatically with a script)
- Check jwt path
Solution: currently still need to pass Lodestar the jwt flag:
./lodestar beacon --network ephemery --jwt-secret=/tmp/jwtsecret
Creating ephemery package in Lodestar
- Added ephemery package
Additional reading
