Installation

Recommended Hardware: 8 Cores, 64GB RAM, 1 TB of storage (NVME)

# install dependencies, if needed
sudo apt update && sudo apt upgrade -y
sudo apt install curl git wget htop tmux build-essential jq make lz4 gcc unzip -y

# install go, if needed
cd $HOME
VER="1.21.3"
wget "https://golang.org/dl/go$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"
[ ! -f ~/.bash_profile ] && touch ~/.bash_profile
echo "export PATH=$PATH:/usr/local/go/bin:~/go/bin" >> ~/.bash_profile
source $HOME/.bash_profile
[ ! -d ~/go/bin ] && mkdir -p ~/go/bin

# set vars
echo "export WALLET="wallet"" >> $HOME/.bash_profile
echo "export MONIKER="test"" >> $HOME/.bash_profile
echo "export OG_CHAIN_ID="zgtendermint_16600-2"" >> $HOME/.bash_profile
echo "export OG_PORT="47"" >> $HOME/.bash_profile
source $HOME/.bash_profile

# download binary
cd $HOME
rm -rf 0g-chain
git clone -b v0.2.5 https://github.com/0glabs/0g-chain.git
cd 0g-chain
make install

# config and init app
0gchaind config node tcp://localhost:${OG_PORT}657
0gchaind config keyring-backend os
0gchaind config chain-id zgtendermint_16600-2
0gchaind init "test" --chain-id zgtendermint_16600-2

# download genesis and addrbook
wget -O $HOME/.0gchain/config/genesis.json https://testnet-files.itrocket.net/og/genesis.json
wget -O $HOME/.0gchain/config/addrbook.json https://testnet-files.itrocket.net/og/addrbook.json

# set seeds and peers
SEEDS="[e-mail]:47656"
PEERS="[e-mail]:11656,[email protected]:12656,[email protected]:12656,[email protected]:11656,[email protected]:46656,[email protected]:656,[email protected]:12656,[email protected]:12656,[email protected]:12656,[email protected]:12656,[email protected]:12656,[email protected]:16656,[email protected]:12656,[email protected]:12656,[email protected]:12656,[email protected]:12656,[email protected]:12656,[email protected]:26656,[email protected]:12656,[email protected]:12656,[email protected]:12656,[email protected]:12656,[email protected]:12656"
sed -i -e "/^\[p2p\]/,/^\[/{s/^[[:space:]]*seeds *=.*/seeds = \"$SEEDS\"/}" \
       -e "/^\[p2p\]/,/^\[/{s/^[[:space:]]*persistent_peers *=.*/persistent_peers = \"$PEERS\"/}" $HOME/.0gchain/config/config.toml


# set custom ports in app.toml
sed -i.bak -e "s%:1317%:${OG_PORT}317%g;
s%:8080%:${OG_PORT}080%g;
s%:9090%:${OG_PORT}090%g;
s%:9091%:${OG_PORT}091%g;
s%:8545%:${OG_PORT}545%g;
s%:8546%:${OG_PORT}546%g;
s%:6065%:${OG_PORT}065%g" $HOME/.0gchain/config/app.toml

# set custom ports in config.toml file
sed -i.bak -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/.0gchain/config/config.toml

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

# set minimum gas price, enable prometheus and disable indexing
sed -i 's|minimum-gas-prices =.*|minimum-gas-prices = "0ua0gi"|g' $HOME/.0gchain/config/app.toml
sed -i -e "s/prometheus = false/prometheus = true/" $HOME/.0gchain/config/config.toml
sed -i -e "s/^indexer *=.*/indexer = \"null\"/" $HOME/.0gchain/config/config.toml

# create service file
sudo tee /etc/systemd/system/0gchaind.service > /dev/null <<EOF
[Unit]
Description=0G node
After=network-online.target
[Service]
User=$USER
WorkingDirectory=$HOME/.0gchain
ExecStart=$(which 0gchaind) start --home $HOME/.0gchain
Restart=on-failure
RestartSec=5
LimitNOFILE=65535
[Install]
WantedBy=multi-user.target
EOF

# reset and download snapshot
0gchaind tendermint unsafe-reset-all --home $HOME/.0gchain
if curl -s --head curl https://testnet-files.itrocket.net/og/snap_og.tar.lz4 | head -n 1 | grep "200" > /dev/null; then
  curl https://testnet-files.itrocket.net/og/snap_og.tar.lz4 | lz4 -dc - | tar -xf - -C $HOME/.0gchain
    else
  echo no have snap
fi

# enable and start service
sudo systemctl daemon-reload
sudo systemctl enable 0gchaind
sudo systemctl restart 0gchaind && sudo journalctl -u 0gchaind -f

Or below command if you don't see the logs

tail -f /root/.0gchain/log/chain.log

Create wallet

# to create a new wallet, use the following command. don’t forget to save the mnemonic
0gchaind keys add $WALLET

# to restore exexuting wallet, use the following command
0gchaind keys add $WALLET --recover

# save wallet and validator address
WALLET_ADDRESS=$(0gchaind keys show $WALLET -a)
VALOPER_ADDRESS=$(0gchaind keys show $WALLET --bech val -a)
echo "export WALLET_ADDRESS="$WALLET_ADDRESS >> $HOME/.bash_profile
echo "export VALOPER_ADDRESS="$VALOPER_ADDRESS >> $HOME/.bash_profile
source $HOME/.bash_profile

# check sync status, once your node is fully synced, the output from above will print "false"
0gchaind status 2>&1 | jq 

# before creating a validator, you need to fund your wallet and check balance
0gchaind query bank balances $WALLET_ADDRESS 

Create validator

0gchaind tx staking create-validator \
--amount 1000000ua0gi \
--from $WALLET \
--commission-rate 0.1 \
--commission-max-rate 0.2 \
--commission-max-change-rate 0.01 \
--min-self-delegation 1 \
--pubkey $(0gchaind tendermint show-validator) \
--moniker "test" \
--identity "" \
--website "" \
--details "I love blockchain ❤️" \
--chain-id zgtendermint_16600-2 \
--gas=auto --gas-adjustment=1.6 \
-y

Monitoring

If you want to have set up a monitoring and alert system use our cosmos nodes monitoring guide with tenderduty

Security

To protect you keys please don`t share your privkey, mnemonic and follow basic security rules

Set up ssh keys for authentication

You can use this guide to configure ssh authentication and disable password authentication on your server

Firewall security

Set the default to allow outgoing connections, deny all incoming, allow ssh and node p2p port

sudo ufw default allow outgoing 
sudo ufw default deny incoming 
sudo ufw allow ssh/tcp 
sudo ufw allow ${OG_PORT}656/tcp
sudo ufw enable

Delete node

sudo systemctl stop 0gchaind
sudo systemctl disable 0gchaind
sudo rm -rf /etc/systemd/system/0gchaind.service
sudo rm $(which 0gchaind)
sudo rm -rf $HOME/.0gchain
sed -i "/OG_/d" $HOME/.bash_profile