💾Node Installation

Band Testnet guide

EXPLORER

• Minimum hardware requirements:

Node Type	CPU	RAM	Storage
Testnet	4	8GB	150GB

1) Auto_install script

wget -O bandt https://raw.githubusercontent.com/111STAVR111/props/main/Band/Testnet/bandt && chmod +x bandt && ./bandt

2) Manual installation

Preparing the server

sudo apt update && sudo apt upgrade -y
sudo apt install curl tar wget clang pkg-config libssl-dev jq build-essential bsdmainutils git make ncdu gcc git jq chrony liblz4-tool -y

GO 1.21.6

ver="1.21.6"
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 14.09.23

cd $HOME && mkdir -p $HOME/go/bin/
git clone https://github.com/bandprotocol/chain band
cd band
git checkout v2.5.4
make install

bandd version --long | head

• version: 2.5.4

• commit: e6548bbf4793829bb8e711e5ed89ba4afc710ded

Initiation

bandd init STAVR_guide --chain-id band-laozi-testnet6
bandd config chain-id band-laozi-testnet6

Create/recover wallet

bandd keys add <walletname>
           OR
bandd keys add <walletname> --recover

Download Genesis

curl https://config-t.noders.services/band/genesis.json -o ~/.band/config/genesis.json

sha256sum $HOME/.band/config/genesis.json

Set up the minimum gas price and Peers/Seeds/Filter peers/MaxPeers

sed -i.bak -e "s/^minimum-gas-prices *=.*/minimum-gas-prices = \"0uband\"/;" ~/.band/config/app.toml
external_address=$(wget -qO- eth0.me) 
sed -i.bak -e "s/^external_address *=.*/external_address = \"$external_address:26656\"/" $HOME/.band/config/config.toml
peers=""
sed -i.bak -e "s/^persistent_peers *=.*/persistent_peers = \"$peers\"/" $HOME/.band/config/config.toml
seeds=""
sed -i.bak -e "s/^seeds =.*/seeds = \"$seeds\"/" $HOME/.band/config/config.toml
sed -i 's/max_num_inbound_peers =.*/max_num_inbound_peers = 50/g' $HOME/.band/config/config.toml
sed -i 's/max_num_outbound_peers =.*/max_num_outbound_peers = 50/g' $HOME/.band/config/config.toml

Pruning (optional)

pruning="custom"
pruning_keep_recent="1000"
pruning_keep_every="0"
pruning_interval="10"
sed -i -e "s/^pruning *=.*/pruning = \"$pruning\"/" $HOME/.band/config/app.toml
sed -i -e "s/^pruning-keep-recent *=.*/pruning-keep-recent = \"$pruning_keep_recent\"/" $HOME/.band/config/app.toml
sed -i -e "s/^pruning-keep-every *=.*/pruning-keep-every = \"$pruning_keep_every\"/" $HOME/.band/config/app.toml
sed -i -e "s/^pruning-interval *=.*/pruning-interval = \"$pruning_interval\"/" $HOME/.band/config/app.toml

Indexer (optional)

indexer="null" &&
sed -i -e "s/^indexer *=.*/indexer = \"$indexer\"/" $HOME/.band/config/config.toml

Download addrbook

curl https://config-t.noders.services/band/addrbook.json -o ~/.band/config/addrbook.json

Create a service file

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

[Service]
User=$USER
ExecStart=$(which bandd) start
Restart=on-failure
RestartSec=3
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target
EOF

StateSync Testnet Mainnet

RPC=https://band.rpc.t.stavr.tech:443
peers=[e-mail]:11016
sed -i.bak -e "s/^persistent_peers *=.*/persistent_peers = \"$peers\"/" $HOME/.band/config/config.toml
LATEST_HEIGHT=$(curl -s $RPC/block | jq -r .result.block.header.height); \
BLOCK_HEIGHT=$((LATEST_HEIGHT - 100)); \
TRUST_HASH=$(curl -s "$RPC/block?height=$BLOCK_HEIGHT" | jq -r .result.block_id.hash)

echo $LATEST_HEIGHT $BLOCK_HEIGHT $TRUST_HASH

sed -i.bak -E "s|^(enable[[:space:]]+=[[:space:]]+).*$|\1true| ; \
s|^(rpc_servers[[:space:]]+=[[:space:]]+).*$|\1\"$RPC,$RPC\"| ; \
s|^(trust_height[[:space:]]+=[[:space:]]+).*$|\1$BLOCK_HEIGHT| ; \
s|^(trust_hash[[:space:]]+=[[:space:]]+).*$|\1\"$TRUST_HASH\"| ; \
s|^(seeds[[:space:]]+=[[:space:]]+).*$|\1\"\"|" $HOME/.band/config/config.toml
sudo systemctl stop bandd && bandd tendermint unsafe-reset-all --keep-addr-book
curl -o - -L http://band-t.files.stavr.tech:1103/files-bandt.tar.lz4 | lz4 -c -d - | tar -x -C $HOME/.band --strip-components 2
sudo systemctl restart bandd && journalctl -u bandd -f -o cat

SnapShot Testnet updated every 5 hours

cd $HOME
apt install lz4
sudo systemctl stop bandd
cp $HOME/.band/data/priv_validator_state.json $HOME/.band/priv_validator_state.json.backup
rm -rf $HOME/.band/data
curl -o - -L http://band-t.snapshot.stavr.tech:1025/bandt/bandt-snap.tar.lz4 | lz4 -c -d - | tar -x -C $HOME/.band --strip-components 2
curl -o - -L http://band-t.files.stavr.tech:1103/files-bandt.tar.lz4 | lz4 -c -d - | tar -x -C $HOME/.band --strip-components 2
mv $HOME/.band/priv_validator_state.json.backup $HOME/.band/data/priv_validator_state.json
curl https://config-t.noders.services/band/addrbook.json -o ~/.band/config/addrbook.json
sudo systemctl restart bandd && journalctl -u bandd -f -o cat

Start

sudo systemctl daemon-reload
sudo systemctl enable bandd
sudo systemctl restart bandd && sudo journalctl -u bandd -f -o cat

Create validator

bandd tx staking create-validator \
  --amount=1000000uband \
  --pubkey=$(bandd tendermint show-validator) \
  --moniker="STAVR_Guide" \
  --identity="" \
  --details="" \
  --website="" \
  --chain-id="band-laozi-testnet6" \
  --commission-rate="0.10" \
  --commission-max-rate="0.20" \
  --commission-max-change-rate="0.2" \
  --min-self-delegation="1" \
  --fees 500uband \
  --from=YourWallet -y

🧩Services and Tools🧩

Monitoring

You can set up your node status alarm here - Monitoring

Security

You can create secure management of your wallet and your node by following this links.

TMKMS Wallet Security

Delete node

sudo systemctl stop bandd
sudo systemctl disable bandd
rm /etc/systemd/system/bandd.service
sudo systemctl daemon-reload
cd $HOME
rm -rf band
rm -rf .band
rm -rf $(which bandd)