OG-Node-install

Explorer: Explorer: https://explorer.validator247.com/zero-gravity-testnet/staking

rpc: https://0g-testnet-rpc.validator247.com/

Hardware requirements

    - Memory: 8 GB RAM
    - CPU: 4 cores
    - Disk: 500 GB NVME SSD
    - Bandwidth: 100mbps Gbps for Download / Upload
    - Linux amd64 arm64 (The guide was tested on Ubuntu 20.04 LTS)

Installation guide

Install required packages

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

Install Go

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" && \
echo "export PATH=$PATH:/usr/local/go/bin:$HOME/go/bin" >> $HOME/.bash_profile && \
source $HOME/.bash_profile && \
go version

Build evmosd binary

 git clone https://github.com/0glabs/0g-evmos.git
 cd 0g-evmos
 git checkout v1.0.0-testnet
 make install
 evmosd version

Set up variables

echo 'export MONIKER="My_Node"' >> ~/.bash_profile
echo 'export CHAIN_ID="zgtendermint_9000-1"' >> ~/.bash_profile
echo 'export WALLET_NAME="wallet"' >> ~/.bash_profile
echo 'export RPC_PORT="26657"' >> ~/.bash_profile
source $HOME/.bash_profile

Intitialize the node

cd $HOME
evmosd init $MONIKER --chain-id $CHAIN_ID
evmosd config chain-id $CHAIN_ID
evmosd config node tcp://localhost:$RPC_PORT
evmosd config keyring-backend os

Download genesis.json

wget https://github.com/0glabs/0g-evmos/releases/download/v1.0.0-testnet/genesis.json -O $HOME/.evmosd/config/genesis.json

Add seeds and peers to the config.toml

            PEERS="1248487ea585730cdf5d3c32e0c2a43ad0cda973@peer-zero-gravity-testnet.trusted-point.com:26326"
            SEEDS="8c01665f88896bca44e8902a30e4278bed08033f@54.241.167.190:26656,b288e8b37f4b0dbd9a03e8ce926cd9c801aacf27@54.176.175.48:26656,8e20e8e88d504e67c7a3a58c2ea31d965aa2a890@54.193.250.204:26656,e50ac888b35175bfd4f999697bdeb5b7b52bfc06@54.215.187.94:26656" && \
            sed -i -e "s/^seeds *=.*/seeds = \"$SEEDS\"/; s/^persistent_peers *=.*/persistent_peers = \"$PEERS\"/" $HOME/.evmosd/config/config.toml

Change ports (Optional)

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

    
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/.evmosd/config/config.toml    

Configure prunning to save storage (Optional)

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

Set min gas price

sed -i "s/^minimum-gas-prices *=.*/minimum-gas-prices = \"0.00252aevmos\"/" $HOME/.evmosd/config/app.toml

Enable indexer (Optional)

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

Create a service file

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

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

[Install]
WantedBy=multi-user.target
EOF

sudo systemctl daemon-reload && sudo systemctl enable ogd

Download Snapshot

Download latest snapshot from our endpoint

     wget https://rpc-zero-gravity-testnet.trusted-point.com/latest_snapshot.tar.lz4

Stop the node

     sudo systemctl stop ogd

Backup priv_validator_state.json

     cp $HOME/.evmosd/data/priv_validator_state.json $HOME/.evmosd/priv_validator_state.json.backup

Reset DB

      evmosd tendermint unsafe-reset-all --home $HOME/.evmosd --keep-addr-book

Extract files fromt the arvhive

     lz4 -d -c ./latest_snapshot.tar.lz4 | tar -xf - -C $HOME/.evmosd

Move priv_validator_state.json back

    mv $HOME/.evmosd/priv_validator_state.json.backup $HOME/.evmosd/data/priv_validator_state.json

Start the node

    sudo systemctl restart ogd && sudo journalctl -u ogd -f -o cat

Check the synchronization status

    evmosd status | jq .SyncInfo

Create a wallet for your validator

Create wallet

    evmosd keys add $WALLET_NAME

Extract the HEX address to request some tokens from the faucet

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

Faucet: https://faucet.0g.ai/

Check wallet balance

    evmosd q bank balances $(evmosd keys show $WALLET_NAME -a) 

Create a validator

    evmosd tx staking create-validator \
    --amount=10000000000000000aevmos \
    --pubkey=$(evmosd tendermint show-validator) \
    --moniker=$MONIKER \
    --chain-id=$CHAIN_ID \
    --commission-rate=0.05 \
    --commission-max-rate=0.10 \
    --commission-max-change-rate=0.01 \
    --min-self-delegation=1 \
    --from=$WALLET_NAME \
    --identity="" \
    --website="" \
    --details="0G to the moon!" \
    --gas=500000 --gas-prices=99999aevmos \
    -y

Edit validator

     evmosd tx staking edit-validator --website="<WEBSITE>" --details="<DESCRIPTION>" --new-moniker="<NEW_MONIKER>" --from=$WALLET_NAME --gas=500000 --gas-prices=99999aevmos -y

Useful commands

Query your validator

    evmosd q staking validator $(evmosd keys show $WALLET_NAME --bech val -a)

Unjail your validator

    evmosd tx slashing unjail --from $WALLET_NAME --gas=500000 --gas-prices=99999aevmos -y

Delegate tokens to your validator

    evmosd tx staking delegate $(evmosd keys show $WALLET_NAME --bech val -a)  <AMOUNT>aevmos --from $WALLET_NAME --gas=500000 --gas-prices=99999aevmos -y

Send tokens between wallets

    evmosd tx bank send $WALLET_NAME <TO_WALLET> <AMOUNT>aevmos --gas=500000 --gas-prices=99999aevmos -y

Check logs

    sudo journalctl -u ogd -f -o cat

Upgrade the node

    cd 0g-evmos
    git fetch
    git checkout tags/<version>
    make install
    evmosd version
    
    #Restrt the node
    sudo systemctl restart ogd && sudo journalctl -u ogd -f -o cat

Delete the node from the server

    sudo systemctl stop ogd
    sudo systemctl disable ogd
    sudo rm /etc/systemd/system/ogd.service
    rm -rf $HOME/.evmosd $HOME/0g-evmos

Done! Thank you !