☑️0G Validator Node

Recommended Hardware: 8 Cores, 64GB RAM, 500GB of storage (NVME)

Installation

Install dependencies, if needed

sudo apt update && \
sudo apt install curl git jq build-essential gcc unzip wget lz4 -y

Install go, if needed

cd $HOME && \
ver="1.22.0" && \
wget "https://golang.org/dl/go$ver.linux-amd64.tar.gz" && \
sudo rm -rf /usr/local/go && \
sudo tar -C /usr/local -xzf "go$ver.linux-amd64.tar.gz" && \
rm "go$ver.linux-amd64.tar.gz" && \
echo "export PATH=$PATH:/usr/local/go/bin:$HOME/go/bin" >> ~/.bash_profile && \
source ~/.bash_profile && \
go version

Build 0gchaind binary from source

git clone -b v0.3.0 https://github.com/0glabs/0g-chain.git
cd 0g-chain
make install
0gchaind version

Setup your variable settings

echo 'export MONIKER="My_Node"' >> ~/.bash_profile
echo 'export CHAIN_ID="zgtendermint_16600-2"' >> ~/.bash_profile
echo 'export WALLET_NAME="wallet"' >> ~/.bash_profile
echo 'export RPC_PORT="26657"' >> ~/.bash_profile
source $HOME/.bash_profile

Initialize node & create home directory for .0gchain

cd $HOME
0gchaind init $MONIKER --chain-id $CHAIN_ID
0gchaind config chain-id $CHAIN_ID
0gchaind config node tcp://localhost:$RPC_PORT
0gchaind config keyring-backend os # You can set it to "test" so you will not be asked for a password

Download genesis file

wget https://github.com/0glabs/0g-chain/releases/download/v0.2.3/genesis.json -O $HOME/.0gchain/config/genesis.json

Set 0G chain seeds

SEEDS="[email protected]:26656,[email protected]:26656,[email protected]:26656,[email protected]:26656" && \
sed -i.bak -e "s/^seeds *=.*/seeds = \"${SEEDS}\"/" $HOME/.0gchain/config/config.toml

Confirm your ports (These are standard values, feel free to edit port(s) you wish to use)

EXTERNAL_IP=$(wget -qO- eth0.me) \
PROXY_APP_PORT=26658 \
P2P_PORT=26656 \
PPROF_PORT=6060 \
API_PORT=1317 \
GRPC_PORT=9090 \
GRPC_WEB_PORT=9091

Set required variable in config.toml & app.toml for your node

sed -i \
    -e "s/\(proxy_app = \"tcp:\/\/\)\([^:]*\):\([0-9]*\).*/\1\2:$PROXY_APP_PORT\"/" \
    -e "s/\(laddr = \"tcp:\/\/\)\([^:]*\):\([0-9]*\).*/\1\2:$RPC_PORT\"/" \
    -e "s/\(pprof_laddr = \"\)\([^:]*\):\([0-9]*\).*/\1localhost:$PPROF_PORT\"/" \
    -e "/\[p2p\]/,/^\[/{s/\(laddr = \"tcp:\/\/\)\([^:]*\):\([0-9]*\).*/\1\2:$P2P_PORT\"/}" \
    -e "/\[p2p\]/,/^\[/{s/\(external_address = \"\)\([^:]*\):\([0-9]*\).*/\1${EXTERNAL_IP}:$P2P_PORT\"/; t; s/\(external_address = \"\).*/\1${EXTERNAL_IP}:$P2P_PORT\"/}" \
    $HOME/.0gchain/config/config.toml

sed -i \
    -e "/\[api\]/,/^\[/{s/\(address = \"tcp:\/\/\)\([^:]*\):\([0-9]*\)\(\".*\)/\1\2:$API_PORT\4/}" \
    -e "/\[grpc\]/,/^\[/{s/\(address = \"\)\([^:]*\):\([0-9]*\)\(\".*\)/\1\2:$GRPC_PORT\4/}" \
    -e "/\[grpc-web\]/,/^\[/{s/\(address = \"\)\([^:]*\):\([0-9]*\)\(\".*\)/\1\2:$GRPC_WEB_PORT\4/}" \
    $HOME/.0gchain/config/app.toml

Pruning (Optional to save storage space)

sed -i \
    -e "s/^pruning *=.*/pruning = \"custom\"/" \
    -e "s/^pruning-keep-recent *=.*/pruning-keep-recent = \"100\"/" \
    -e "s/^pruning-interval *=.*/pruning-interval = \"10\"/" \
    "$HOME/.0gchain/config/app.toml"

Set min gas price

sed -i "s/^minimum-gas-prices *=.*/minimum-gas-prices = \"0ua0gi\"/" $HOME/.0gchain/config/app.toml

Enable indexer

sed -i "s/^indexer *=.*/indexer = \"kv\"/" $HOME/.0gchain/config/config.toml

Create 0gd service for your node to run in the background

sudo tee /etc/systemd/system/0gd.service > /dev/null <<EOF
[Unit]
Description=0G Node
After=network.target

[Service]
User=$USER
Type=simple
ExecStart=$(which 0gchaind) start --home $HOME/.0gchain
Restart=on-failure
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target
EOF

Start node

sudo systemctl daemon-reload && \
sudo systemctl enable 0gd && \
sudo systemctl restart 0gd && \
sudo journalctl -u 0gd -f -o cat

Check for your syncing progress

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

The result should be "catching_up": false when your node is fully synced

Result example

{
  "latest_block_height": "419865",
  "catching_up": false
}

NodeGuru's explorer for checking latest block height here

Create wallet

0gchaind keys add $WALLET_NAME --eth

# DO NOT FORGET TO SAVE THE SEED PHRASE & YOUR PASSPHRASE YOU SET FOR THIS WALLET
# You can add --recover flag to restore existing key instead of creating

Extract the 0x address and use it for receiving testnet token

echo "0x$(0gchaind debug addr $(0gchaind keys show $WALLET_NAME -a) | grep hex | awk '{print $3}')"

Request for Testnet token

| Faucet | - use your 0x address to request

Check your wallet balance (node must be synced in order to see the current balance)

0gchaind q bank balances $(0gchaind keys show $WALLET_NAME -a) 

Result example - 1 A0GI = 1,000,000 ua0gi

balances:
- amount: "41694146"
  denom: ua0gi
pagination:
  next_key: null
  total: "0"

Create validator

0gchaind tx staking create-validator \
--amount=1000000ua0gi \
--pubkey=$(0gchaind tendermint show-validator) \
--moniker="$MONIKER" \
--chain-id=zgtendermint_16600-2 \
--commission-rate="0.10" \
--commission-max-rate="0.20" \
--commission-max-change-rate="0.01" \
--details="" \
--website="" \
--min-self-delegation="1" \
--from="$WALLET_NAME" \
--gas=auto \
--gas-adjustment=1.4 \
-y

Once your validator is created you can look up your validator here. Most likely it will be in inactive set as you will need enough stake to reach top 125 TVL validator. This is normal ~~~

Run curl test to check for your RPC port if it's works properly

# set EXTERNAL_IP variable
EXTERNAL_IP=$(wget -qO- eth0.me)

# query for current block height (json-rpc)
curl -X POST http://$EXTERNAL_IP:8545 -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

# query for Net version (json-rpc)
curl -X POST http://$EXTERNAL_IP:8545 -H "Content-Type: application/json" -d '{"jsonrpc":"2.0","method":"net_version","params":[],"id":1}'

Result example

Current block height

{"jsonrpc":"2.0","id":1,"result":"0x66972"}

Net version (evm chain-id)

{"jsonrpc":"2.0","id":1,"result":"16600"}

Upgrade Your Node

At height 574000

cd $HOME
wget -O 0gchaind https://zgchaind-test.s3.ap-east-1.amazonaws.com/0gchaind-linux-v0.3.0
chmod +x $HOME/0gchaind
sudo mv $HOME/0gchaind $HOME/go/bin/
sudo systemctl restart 0gd

Check log

tail -f -n 100 $HOME/.0gchain/log/chain.log

Congratulation!!

Now you have completed your node for 0gchain and we will move on to creating your storage node next.