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85 lines
3.3 KiB
Markdown
85 lines
3.3 KiB
Markdown
# Prysm Client Interoperability Guide
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This README details how to setup Prysm for interop testing for usage with other Ethereum 2.0 clients.
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## Installation & Setup
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1. Install [Bazel](https://docs.bazel.build/versions/master/install.html) **(Recommended)**
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2. `git clone https://github.com/prysmaticlabs/prysm && cd prysm`
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3. `bazel build //...`
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## Starting from Genesis
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Prysm supports a few ways to quickly launch a beacon node from basic configurations:
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- `NumValidators + GenesisTime`: Launches a beacon node by deterministically generating a state from a num-validators flag along with a genesis time **(Recommended)**
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- `SSZ Genesis`: Launches a beacon node from a .ssz file containing a SSZ-encoded, genesis beacon state
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## Generating a Genesis State
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To setup the necessary files for these quick starts, Prysm provides a tool to generate a `genesis.ssz` from
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a deterministically generated set of validator private keys following the official interop YAML format
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[here](https://github.com/ethereum/eth2.0-pm/blob/master/interop/mocked_start).
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You can use `bazel run //tools/genesis-state-gen` to create a deterministic genesis state for interop.
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### Usage
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- **--genesis-time** uint: Unix timestamp used as the genesis time in the generated genesis state (defaults to now)
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- **--mainnet-config** bool: Select whether genesis state should be generated with mainnet or minimal (default) params
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- **--num-validators** int: Number of validators to deterministically include in the generated genesis state
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- **--output-ssz** string: Output filename of the SSZ marshaling of the generated genesis state
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The example below creates 64 validator keys, instantiates a genesis state with those 64 validators and with genesis unix timestamp 1567542540,
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and finally writes a ssz encoded output to ~/Desktop/genesis.ssz. This file can be used to kickstart the beacon chain in the next section.
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```
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bazel run //tools/genesis-state-gen -- --output-ssz ~/Desktop/genesis.ssz --num-validators 64 --genesis-time 1567542540
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```
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## Launching a Beacon Node + Validator Client
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### Launching from Pure CLI Flags
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Open up two terminal windows, run:
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```
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bazel run //beacon-chain -- \
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--bootstrap-node= \
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--deposit-contract $(curl -s https://prylabs.net/contract) \
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--force-clear-db \
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--interop-num-validators 64 \
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--interop-eth1data-votes
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```
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This will deterministically generate a beacon genesis state and start
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the system with 64 validators and the genesis time set to the current unix timestamp.
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Wait a bit until your beacon chain starts, and in the other window:
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```
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bazel run //validator -- --keymanager=interop --keymanageropts='{"keys":64}'
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```
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This will launch and kickstart the system with your 64 validators performing their duties accordingly.
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### Launching from `genesis.ssz`
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Assuming you generated a `genesis.ssz` file with 64 validators, open up two terminal windows, run:
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```
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bazel run //beacon-chain -- \
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--bootstrap-node= \
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--deposit-contract $(curl -s https://prylabs.net/contract) \
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--force-clear-db \
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--interop-genesis-state /path/to/genesis.ssz \
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--interop-eth1data-votes
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```
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Wait a bit until your beacon chain starts, and in the other window:
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```
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bazel run //validator -- --keymanager=interop --keymanageropts='{"keys":64}'
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```
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This will launch and kickstart the system with your 64 validators performing their duties accordingly.
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