🦥Erigon

Authors: [man4ela | catapulta.eth]

System Requirements

CPU

RAM

DISK

8+ cores CPU

Debian 12/Ubuntu 22.04

=> 16 GB RAM

500GB (SSD or NVMe)

The Erigon XLayer archive node has a size of 36GB on August 9th, 2024

Setup production Erigon

This guide covers the installation of CDK-Erigon, a fork of Erigon, optimized for syncing with the XLayer network.

With their Eggfruit upgrade in September 2024, the Polygon team made the official recommendation that all infra providers will need to begin running the cdk-erigon RPC Node. While zkEVm Node is still operational, it is no longer being maintained by the Polygon team. Additionally, we found slight POI divergence in our integration testing. Please use the test below as an initial screening when working with this chain.

Indexer Test for X Layer POI

Due to POI divergences found with X Layer, we created an initial test below for indexers that may indicate that their setup allows them to sync other subgraphs and be in majority consensus.

Sync the following subgraph: QmWHYMV9mPZ6zoomwWSZbN24sdGSEQhy1efritMiETpxqS
Query to grab the POI

{ "query": "{ proofOfIndexing(subgraph: "QmWHYMV9mPZ6zoomwWSZbN24sdGSEQhy1efritMiETpxqS", blockNumber: 3041190, blockHash: "0xa819924ad94bcf3295826d5ad916c9ef06fac8cb46a6273d3bcc7aec822e22e7", indexer: "0x0000000000000000000000000000000000000000") }" }

If there is a match for the Consensus POI provided below, it may indicate that their setup allows them to sync other subgraphs and be in the majority consensus. If they get a match for the Divergent POI, this can be an indication of a data determinism issue.

Consensus 0xa1223b5cbabf16d9896c2bd19099d08e5ce45c7ff308674b3ea7ada5367334bf

Divergent 0x411bf0293e96a1459167ef1828aa7d70cd6c2e1f8c4210e0edf0fa8827eeed69

Shell into your index node and run this curl command

curl -s -X POST -H "Content-Type: application/json" --data '{"query": "{ proofOfIndexing(subgraph: "QmWHYMV9mPZ6zoomwWSZbN24sdGSEQhy1efritMiETpxqS", blockNumber: 3041190, blockHash: "0xa819924ad94bcf3295826d5ad916c9ef06fac8cb46a6273d3bcc7aec822e22e7", indexer: "0x0000000000000000000000000000000000000000") }"}' "http://localhost:8030/graphql"

Pre-Requisites

sudo apt update -y && sudo apt upgrade -y && sudo apt autoremove -y

sudo apt install -y libgtest-dev libomp-dev libgmp-dev git make wget aria2 gcc pkg-config libusb-1.0-0-dev libudev-dev jq g++ curl libssl-dev screen apache2-utils build-essential

Setting up Firewall

Set explicit default UFW rules

sudo ufw default deny incoming
sudo ufw default allow outgoing

Allow SSH

sudo ufw allow 22/tcp

Allow remote RPC connections with Blast Node

sudo ufw allow from ${REMOTE.HOST.IP} to any port 8545

Not advised to allow all or unknown IP address to RPC port

Enable Firewall

sudo ufw enable

To check the status of UFW and see the current rules

sudo ufw status verbose

Install GO

Go version 1.20.7 is required to build cdk-rigon

sudo wget https://go.dev/dl/go1.20.7.linux-amd64.tar.gz && sudo rm -rf /usr/local/go && sudo tar -C /usr/local -xzf go1.20.7.linux-amd64.tar.gz && rm go1.20.7.linux-amd64.tar.gz

echo 'export PATH=$PATH:/usr/local/go/bin:/root/.local/bin' >> /root/.bashrc

source /root/.bashrc

#verify Go installation
go version

Build Erigon RPC Node

Before you start, make sure that you have your own synced Ethereum L1 RPC URL ready.

Clone the Erigon repository and build cdk-erigon. Check the latest version at releases page.

git clone https://github.com/0xPolygonHermez/cdk-erigon.git

cd cdk-erigon

git checkout v1.2.24 #[checkout the latest release version]

make cdk-erigon

Configure xLayer Mainnet Parameters

mkdir /root/data/erigon-data/xlayer-mainnet

mkdir /root/xlayer

cd /root/xlayer

sudo nano xlayerconfig-mainnet.yaml

Paste and modify parameters. Save by entering `ctrl+X` and `Y+ENTER`

datadir: /root/data/erigon-data/xlayer-mainnet
chain: xlayer-mainnet
http: true
private.api.addr: localhost:9091
zkevm.l2-chain-id: 196
zkevm.l2-sequencer-rpc-url: https://rpc.xlayer.tech
zkevm.l2-datastreamer-url: stream.xlayer.tech:8800
zkevm.l1-chain-id: 1
zkevm.l1-rpc-url: {L1 RPC URL}

zkevm.address-sequencer: "0xAF9d27ffe4d51eD54AC8eEc78f2785D7E11E5ab1"
zkevm.address-zkevm: "0x2B0ee28D4D51bC9aDde5E58E295873F61F4a0507"
zkevm.address-admin: "0x491619874b866c3cDB7C8553877da223525ead01"
zkevm.address-rollup: "0x5132A183E9F3CB7C848b0AAC5Ae0c4f0491B7aB2"
zkevm.address-ger-manager: "0x580bda1e7A0CFAe92Fa7F6c20A3794F169CE3CFb"

zkevm.l1-rollup-id: 3
zkevm.l1-first-block: 19218658
zkevm.l1-block-range: 2000
zkevm.l1-query-delay: 1000
zkevm.rpc-ratelimit: 250
zkevm.datastream-version: 3

externalcl: true
http.api: [eth, debug, net, trace, web3, erigon, zkevm]
http.addr: 0.0.0.0
http.port: 8545

Replace {L1 RPC URL} with your synced endpoint

Launch Erigon Node

Create systemd service for `cdk-erigon`

sudo nano /etc/systemd/system/cdk-erigon.service

Paste the configs and save by entering ctrl+X and Y+ENTER:

[Unit]
Description=cdk-erigon Service
After=network.target
StartLimitIntervalSec=200
StartLimitBurst=5

[Service]
Type=simple
Restart=on-failure
RestartSec=5
TimeoutSec=900
User=root
Nice=0
LimitNOFILE=200000
WorkingDirectory=/root/cdk-erigon/build/bin/
ExecStart=/root/cdk-erigon/build/bin/cdk-erigon --config="/root/xlayer/xlayerconfig-mainnet.yaml"
KillSignal=SIGTERM

[Install]
WantedBy=multi-user.target

Start cdk-erigon

sudo systemctl daemon-reload #refresh systemd configuration when changes made

sudo systemctl enable cdk-erigon.service #enable cdk-erigon service at system startup

sudo systemctl start cdk-erigon.service #start cdk-erigon

sudo nano /etc/systemd/system/cdk-erigon.service #make changes in cdk-erigon.service file

Run `curl` command in the terminal to check the status of your node

curl -H "Content-type: application/json" -X POST --data '{"jsonrpc":"2.0","method":"eth_syncing","params":[],"id":1}' http://localhost:8545

When it returns false then your node is fully synchronized with the network

Monitor the logs for errors

sudo journalctl -fu cdk-erigon.service #follow logs of cdk-erigon.service

During the synchonization, you are expected to get following log messages from cdk-erigon:

[INFO] [08-04|10:39:44.828] [1/16 L1Syncer] Starting L1 sync stage
[INFO] [08-04|10:39:44.829] Starting L1 syncer thread
[INFO] [08-04|10:39:54.914] [1/16 L1Syncer] L1 Blocks processed progress (amounts): 254000/1235309 (20%)
[INFO] [08-04|10:40:04.915] [1/16 L1Syncer] L1 Blocks processed progress (amounts): 430000/1235309 (34%)
....
[INFO] [08-04|14:32:56.247] [13/16 LogIndex] Started
[INFO] [08-04|14:32:56.248] [13/16 LogIndex] processing              from=499948 to=3642707
[INFO] [08-04|14:33:37.995] [13/16 LogIndex] Finished
[INFO] [08-04|14:33:45.451] [p2p] GoodPeers
[INFO] [08-04|14:33:45.700] [txpool] stat                            pending=0 baseFee=0 queued=0 alloc=353.1MB sys=6.2GB
[INFO] [08-04|14:33:59.786] [14/16 TxLookup] Flushed buffer file     name=/root/data/erigon-data/xlayer-mainnet/temp/erigon-sortable-buf-1679142578
[INFO] [08-04|14:34:02.324] [14/16 TxLookup] Flushed buffer file     name=/root/data/erigon-data/xlayer-mainnet/temp/erigon-sortable-buf-2496799223
[INFO] [08-04|14:34:03.661] [15/16 DataStream] Starting...
[INFO] [08-04|14:34:03.662] [15/16 DataStream] no streamer provided, skipping stage
[INFO] [08-04|14:34:03.662] [16/16 Finish] Started
[INFO] [08-04|14:34:03.662] [16/16 Finish] Finished