installation

---

description: Setting up your validator node has never been so easy. Get your validator running in minutes by following step by step instructions.

Installation

Band Protocol

Network name: Band Protocol | Chain ID: laozi-mainnet | Latest version: v2.5.4 | Custom Port: 266

Setup validator name

Replace YOUR_MONIKER_GOES_HERE with your validator name

MONIKER="YOUR_MONIKER_GOES_HERE"

Install dependencies

Update system and install build tools

sudo apt -q update
sudo apt -qy install curl git jq zst build-essential
sudo apt -qy upgrade

Install Go

sudo rm -rf /usr/local/go
curl -Ls https://go.dev/dl/go1.19.8.linux-amd64.tar.gz | sudo tar -xzf - -C /usr/local
eval $(echo 'export PATH=$PATH:/usr/local/go/bin' | sudo tee /etc/profile.d/golang.sh)
eval $(echo 'export PATH=$PATH:$HOME/go/bin' | tee -a $HOME/.profile)

Download and build binaries

# Clone project repository
cd $HOME
rm -rf bandchain
git clone https://github.com/bandprotocol/chain bandchain
cd bandchain
git checkout v2.5.4

# Build binaries
make install

# Prepare binaries for Cosmovisor
mkdir -p $HOME/.band/cosmovisor/genesis/bin
mv ~/go/bin/bandd $HOME/.band/cosmovisor/genesis/bin/
rm -rf build

Install Cosmovisor and create a service

# Download and install Cosmovisor
go install cosmossdk.io/tools/cosmovisor/cmd/cosmovisor@v1.4.0

# Create service
sudo tee /etc/systemd/system/bandd.service > /dev/null << EOF
[Unit]
Description=osmosis node service
After=network-online.target

[Service]
User=$USER
ExecStart=$(which cosmovisor) run start
WorkingDirectory=$HOME/.band
Restart=always
RestartSec=5
LimitNOFILE=65535
Environment="DAEMON_HOME=$HOME/.band"
Environment="DAEMON_NAME=bandd"
Environment="DAEMON_ALLOW_DOWNLOAD_BINARIES=false"
Environment="DAEMON_RESTART_AFTER_UPGRADE=true"
Environment="UNSAFE_SKIP_BACKUP=true"
Environment="PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:$HOME/.band/cosmovisor/current/bin"

[Install]
WantedBy=multi-user.target
EOF
sudo systemctl daemon-reload
sudo systemctl enable bandd

Initialize the node

# Set node configuration
bandd config chain-id laozi-mainnet
bandd config node tcp://localhost:26657

# Initialize the node
bandd init $MONIKER --chain-id laozi-mainnet

# Download genesis and addrbook
curl -Ls https://raw.githubusercontent.com/bandprotocol/launch/master/laozi-mainnet/genesis.json > $HOME/.band/config/genesis.json
curl -Ls https://snapshots.lavenderfive.com/addrbooks/bandchain/addrbook.json > $HOME/.band/config/addrbook.json

# Add seeds
seeds="8d42bdcb6cced03e0b67fa3957e4e9c8fd89015a@34.87.86.195:26656,543e0cab9c3016a0e99775443a17bcf163038912@34.150.156.78:26656,[e-mail]:36656,[e-mail]:26666,[e-mail]:25017,[e-mail]:16959,[e-mail]:26656,[e-mail]:40000,[e-mail]:16672"
sed -i -e "s|^seeds *=.*|seeds = \"$seeds\"|" $HOME/.band/config/config.toml

# Set minimum gas price
sed -i -e "s|^minimum-gas-prices *=.*|minimum-gas-prices = \"0.0025uband\"|" $HOME/.band/config/app.toml

# Set pruning
sed -i \
  -e 's|^pruning *=.*|pruning = "custom"|' \
  -e 's|^pruning-keep-recent *=.*|pruning-keep-recent = "100"|' \
  -e 's|^pruning-keep-every *=.*|pruning-keep-every = "0"|' \
  -e 's|^pruning-interval *=.*|pruning-interval = "19"|' \
  $HOME/.band/config/app.toml

# Set custom ports
sed -i -e "s%^proxy_app = \"tcp://127.0.0.1:26658\"%proxy_app = \"tcp://127.0.0.1:26658\"%; s%^laddr = \"tcp://127.0.0.1:26657\"%laddr = \"tcp://127.0.0.1:26657\"%; s%^pprof_laddr = \"localhost:6060\"%pprof_laddr = \"localhost:26660\"%; s%^laddr = \"tcp://0.0.0.0:26656\"%laddr = \"tcp://0.0.0.0:26656\"%; s%^prometheus_listen_addr = \":26660\"%prometheus_listen_addr = \":26666\"%" $HOME/.band/config/config.toml
sed -i -e "s%^address = \"tcp://0.0.0.0:1317\"%address = \"tcp://0.0.0.0:26617\"%; s%^address = \":8080\"%address = \":26680\"%; s%^address = \"0.0.0.0:9090\"%address = \"0.0.0.0:26690\"%; s%^address = \"0.0.0.0:9091\"%address = \"0.0.0.0:26691\"%; s%:8545%:26645%; s%:8546%:26646%; s%:6065%:26665%" $HOME/.band/config/app.toml

Start service and check the logs

sudo systemctl start bandd && sudo journalctl -u bandd -f --no-hostname -o cat

Sync

To catch up quickly, you can either use a snapshot or state sync