# Testnet configs

### Build lodestar

- `yarn && yarn build` (or if you have lerna installed: `lerna bootstrap`)
- `cd packages/lodestar-cli`

### Initialize a new beacon node configuration
- initializing `lodestar` into a specific directory is helpful for running multiple nodes
- set `root-dir` cli flag or `LODESTAR_ROOT_DIR` env variable
- all data will be installed/fetched from this directory
- you might want to start from known genesis state and disable eth1 processing
- set `chain.genesisStateFile=path/to/genesis.ssz` to start genesis from file
- path is currently relative from working directory when running `lodestar`
- set `eth1.enabled=false` to disable eth1 processing
- save a json below as eg: `altona.json`
- initialize beacon config with the config as a template, init to its own directory, with above tweaks:

./bin/lodestar beacon init \
    --template-config-file altona.json \
    --eth1.enabled=false \
    --chain.genesisStateFile=path/to/genesis.ssz \
    --root-dir .altona

- genesis ssz available here: https://github.com/eth2-clients/eth2-testnets/blob/master/shared/altona/genesis.ssz
- cli flags used ^ will be used to tweak the configuration written to disk
- the configuration should be available under `.altona/beacon/beacon.config.json`

### Run beacon node
- `./bin/lodestar beacon run --root-dir .altona`
- Any options set in the json config may be overridden as a cli flag

## Altona

{
  "api": {
    "enabled": true,
    "namespaces": [
      "beacon",
      "validator"
    ],
    "host": "127.0.0.1",
    "port": 9596,
    "cors": {
      "origin": "*"
    }
  },
  "chain": {
    "preset": "mainnet",
    "genesisStateFile": ".altona/beacon/genesis.ssz",
    "params": {
        "MIN_GENESIS_TIME": 1593433800,
        "MIN_GENESIS_ACTIVE_VALIDATOR_COUNT": 640,
        "GENESIS_DELAY": 172800, 
        "GENESIS_FORK_VERSION": "0x00000121"
    }
  },
  "eth1": {
    "enabled": false,
    "provider": {
      "url": "http://goerli.prylabs.net",
      "network": 5
    },
    "depositContract": {
      "deployedAt": 2917810,
      "address": "0x16e82D77882A663454Ef92806b7DeCa1D394810f"
    }
  },
  "logger": {
    "chain": {
      "level": "verbose"
    },
    "network": {
      "level": "verbose"
    },
    "eth1": {
      "level": "verbose"
    },
    "sync": {
      "level": "verbose"
    }
  },
  "metrics": {
    "enabled": true,
    "serverPort": 5000
  },
  "network": {
    "discv5": {
      "enabled": true,
      "bindAddr": "/ip4/0.0.0.0/udp/9000",
      "bootEnrs": [
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      ]
    },
    "maxPeers": 25,
    "bootMultiaddrs": [
        "/ip4/51.15.97.240/tcp/9000/p2p/16Uiu2HAkwVT363kpFmupwJBH5tkhnaNZPQSY7zANnPGB63ikD1Wp",
"/ip4/51.15.70.7/tcp/9000/p2p/16Uiu2HAmHV1UA1SBnNK7Ztp8ACQ8DzHwNnR49VDEPBavCU33PtVE"
    ],
    "localMultiaddrs": [
      "/ip4/0.0.0.0/tcp/30607"
    ]
  }
}