Validator Node Installation

Running a validator node for the 0G-Galileo-Testnet in the 0G ecosystem means actively participating in the network’s security and consensus through the Proof-of-Stake (PoS) mechanism. As a validator, you’ll validate transactions, propose new blocks, and earn rewards for your contribution to the network’s integrity and decentralization.

Hardware Requirements

Component	Mainnet	Testnet
Memory	64 GB	64 GB
CPU	8 cores	8 cores
Disk	1 TB NVME SSD	4 TB NVME SSD
Bandwidth	100 MBps for Download / Upload	100 MBps for Download / Upload

System Update & Dependencies

sudo apt update
sudo apt install curl git make jq build-essential gcc unzip wget lz4 aria2 -y

Download And Extract Galileo

wget https://github.com/0glabs/0gchain-ng/releases/download/v1.0.1/galileo-v1.0.1.tar.gz
tar -xzvf galileo-v1.0.1.tar.gz -C $HOME

Permissions & Move Binaries

sudo chmod 777 $HOME/galileo/bin/geth
sudo chmod 777 $HOME/galileo/bin/0gchaind
cp $HOME/galileo/bin/geth $HOME/go/bin/geth
cp $HOME/galileo/bin/0gchaind $HOME/go/bin/0gchaind

source $HOME/.bash_profile
geth version
0gchaind version

Variable Settings

echo "export WALLET='allnodesone'" >> $HOME/.bash_profile
echo "export MONIKER='allnodesone'" >> $HOME/.bash_profile
echo "export OG_PORT='26'" >> $HOME/.bash_profile
source $HOME/.bash_profile

Node Init

mkdir -p $HOME/.0gchaind
cp -r $HOME/galileo/0g-home $HOME/.0gchaind

# Init Geth
geth init --datadir $HOME/.0gchaind/0g-home/geth-home $HOME/galileo/genesis.json

# Init 0gchaind
0gchaind init "allnodesone" --home $HOME/.0gchaind/tmp

# Copy node files
cp $HOME/.0gchaind/tmp/data/priv_validator_state.json $HOME/.0gchaind/0g-home/0gchaind-home/data/
cp $HOME/.0gchaind/tmp/config/node_key.json $HOME/.0gchaind/0g-home/0gchaind-home/config/
cp $HOME/.0gchaind/tmp/config/priv_validator_key.json $HOME/.0gchaind/0g-home/0gchaind-home/config/
rm -rf $HOME/.0gchaind/tmp

Custom Port Setting (Optional)

sed -i -e "
s%:26658%:${OG_PORT}658%g;
s%:26657%:${OG_PORT}657%g;
s%:6060%:${OG_PORT}060%g;
s%:26656%:${OG_PORT}656%g;
s%^external_address = \"\"%external_address = \"$(wget -qO- eth0.me):${OG_PORT}656\"%;
s%:26660%:${OG_PORT}660%g
" $HOME/.0gchaind/0g-home/0gchaind-home/config/config.toml

sed -i -e "s|^node *=.*|node = \"tcp://localhost:${OG_PORT}657\"|" $HOME/.0gchaind/0g-home/0gchaind-home/config/client.toml
sed -i -e "s|^keyring-backend *=.*|keyring-backend = \"os\"|" $HOME/.0gchaind/0g-home/0gchaind-home/config/client.toml

Config Pruning, Gas Price, Prometheus

sed -i -e "s/^pruning *=.*/pruning = \"custom\"/" $HOME/.0gchaind/0g-home/0gchaind-home/config/app.toml
sed -i -e "s/^pruning-keep-recent *=.*/pruning-keep-recent = \"100\"/" $HOME/.0gchaind/0g-home/0gchaind-home/config/app.toml
sed -i -e "s/^pruning-interval *=.*/pruning-interval = \"50\"/" $HOME/.0gchaind/0g-home/0gchaind-home/config/app.toml

sed -i -e "s/prometheus = false/prometheus = true/" $HOME/.0gchaind/0g-home/0gchaind-home/config/config.toml
sed -i -e "s/^indexer *=.*/indexer = \"null\"/" $HOME/.0gchaind/0g-home/0gchaind-home/config/config.toml

Create Systemd Service Files 0gchaind.service

sudo tee /etc/systemd/system/0gchaind.service > /dev/null <<EOF
[Unit]
Description=0G Chain Daemon
After=network-online.target

[Service]
User=root
ExecStart=$(which 0gchaind) start \\
    --rpc.laddr tcp://0.0.0.0:26657 \\
    --beacon-kit.kzg.trusted-setup-path=$HOME/galileo/kzg-trusted-setup.json \\
    --beacon-kit.engine.jwt-secret-path=$HOME/galileo/jwt-secret.hex \\
    --beacon-kit.kzg.implementation=crate-crypto/go-kzg-4844 \\
    --beacon-kit.block-store-service.enabled \\
    --beacon-kit.node-api.enabled \\
    --beacon-kit.node-api.logging \\
    --beacon-kit.node-api.address 0.0.0.0:3500 \\
    --pruning=custom \\
    --home $HOME/.0gchaind/0g-home/0gchaind-home \\
    --p2p.seeds [email protected]:26656 \\
    --p2p.external_address $(curl -s http://ipv4.icanhazip.com):${OG_PORT}656
Environment=CHAIN_SPEC=devnet
WorkingDirectory=$HOME/galileo
Restart=always
RestartSec=3
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target
EOF

Create Systemd Service Files geth.service

sudo tee /etc/systemd/system/geth.service > /dev/null <<EOF
[Unit]
Description=Go Ethereum Client
After=network-online.target
Wants=network-online.target

[Service]
User=root
ExecStart=$HOME/go/bin/geth \\
    --config $HOME/galileo/geth-config.toml \\
    --datadir $HOME/.0gchaind/0g-home/geth-home \\
    --networkid 80087 \\
    --port 30303 \\
    --http.port 8645 \\
    --authrpc.port 8551
Restart=always
WorkingDirectory=$HOME/galileo
RestartSec=3
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target
EOF

Enable And Start Services

sudo systemctl daemon-reload
sudo systemctl enable 0gchaind
sudo systemctl enable geth
sudo systemctl start 0gchaind
sudo systemctl start geth

Check Status And Logs

sudo systemctl status 0gchaind
sudo systemctl status geth
sudo journalctl -fu 0gchaind -o cat
sudo journalctl -fu geth -o cat

Check Block Height

0gchaind status | jq '{ latest_block_height: .sync_info.latest_block_height, catching_up: .sync_info.catching_up }'

Check Block Sync Status

while true; do
  PORT=$(grep -A 3 '^\[rpc\]' $HOME/.0gchaind/0g-home/0gchaind-home/config/config.toml | grep -oP 'laddr = "tcp://[0-9.:]+:\K\d+')
  local=$(curl -s localhost:$PORT/status | jq -r '.result.sync_info.latest_block_height//0')
  network=$(curl -s http://8.218.94.246:26657/status | jq -r '.result.sync_info.latest_block_height//0')
  left=$((network - local))
  echo -e "Local: \033[1;34m$local\033[0m | Network: \033[1;36m$network\033[0m | Left: \033[1;31m$left\033[0m"
  sleep 5
done

Remove node

🚨 Danger

Please, before proceeding with the next step! All chain data will be lost! Make sure you have backed up your wallet key & priv_validator_key.json!

cd $HOME
sudo systemctl stop 0gchaind geth
sudo systemctl disable 0gchaind geth
sudo rm /etc/systemd/system/0gchaind.service
sudo rm /etc/systemd/system/geth.service
sudo systemctl daemon-reload
sudo rm -f $(which 0gchaind)
sudo rm -rf $HOME/.0gchaind