Node Installation

Union Testnet guide

EXPLORER

• Minimum hardware requirements:

Node Type	CPU	RAM	Storage
Testnet	4	8GB	150GB

1) Auto_install script

wget -O uniont https://raw.githubusercontent.com/111STAVR111/props/main/Union/uniont && chmod +x uniont && ./uniont

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 10.06.24

cd $HOME && mkdir -p go/bin/
wget https://uniont.binary.stavr.tech/union/uniond
chmod +x uniond
mv uniond $HOME/go/bin/

uniond --home $HOME/.union version --long

• version: v0.24.0

• commit: 4d3bf1c9ca1e7b210206ab20c32fe0300ea23291

Initiation

uniond --home $HOME/.union init STAVR_guide --chain-id union-testnet-8

Create/recover wallet

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

Download Genesis

wget -O $HOME/.union/config/genesis.json "https://raw.githubusercontent.com/111STAVR111/props/main/Union/genesis.json"

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

• e4baab5c99daeff7445d43fff5adf5412d1269e59d2929e56f05b113d4ae0c3c

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

sed -i.bak -e "s/^minimum-gas-prices *=.*/minimum-gas-prices = \"0.0muno\"/;" ~/.union/config/app.toml
external_address=$(wget -qO- eth0.me) 
sed -i.bak -e "s/^external_address *=.*/external_address = \"$external_address:26656\"/" $HOME/.union/config/config.toml
peers=""
sed -i.bak -e "s/^persistent_peers *=.*/persistent_peers = \"$peers\"/" $HOME/.union/config/config.toml
seeds=""
sed -i.bak -e "s/^seeds =.*/seeds = \"$seeds\"/" $HOME/.union/config/config.toml
sed -i 's/max_num_inbound_peers =.*/max_num_inbound_peers = 50/g' $HOME/.union/config/config.toml
sed -i 's/max_num_outbound_peers =.*/max_num_outbound_peers = 10/g' $HOME/.union/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\"/" $HOME/.union/config/app.toml
sed -i -e "s/^pruning-keep-recent *=.*/pruning-keep-recent = \"$pruning_keep_recent\"/" $HOME/.union/config/app.toml
sed -i -e "s/^pruning-keep-every *=.*/pruning-keep-every = \"$pruning_keep_every\"/" $HOME/.union/config/app.toml
sed -i -e "s/^pruning-interval *=.*/pruning-interval = \"$pruning_interval\"/" $HOME/.union/config/app.toml

Indexer (optional)

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

Download addrbook

wget -O $HOME/.union/config/addrbook.json "https://raw.githubusercontent.com/111STAVR111/props/main/Union/addrbook.json"

Create a service file

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

[Service]
User=$USER
ExecStart=$(which uniond) start --home /root/.union
Restart=on-failure
RestartSec=3
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target
EOF

StateSync Union Testnet

SNAP_RPC=https://union.rpc.t.stavr.tech:443
peers="[e-mail]:4256"
sed -i.bak -e "s/^persistent_peers *=.*/persistent_peers = \"$peers\"/" $HOME/.union/config/config.toml
LATEST_HEIGHT=$(curl -s $SNAP_RPC/block | jq -r .result.block.header.height); \
BLOCK_HEIGHT=$((LATEST_HEIGHT - 1000)); \
TRUST_HASH=$(curl -s "$SNAP_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\"$SNAP_RPC,$SNAP_RPC\"| ; \
s|^(trust_height[[:space:]]+=[[:space:]]+).*$|\1$BLOCK_HEIGHT| ; \
s|^(trust_hash[[:space:]]+=[[:space:]]+).*$|\1\"$TRUST_HASH\"| ; \
s|^(seeds[[:space:]]+=[[:space:]]+).*$|\1\"\"|" $HOME/.union/config/config.toml
uniond tendermint unsafe-reset-all --home /root/.union
wget -O $HOME/.union/config/addrbook.json "https://raw.githubusercontent.com/111STAVR111/props/main/Union/addrbook.json"
systemctl restart uniond && journalctl -u uniond -f -o cat

SnapShot Testnet updated every 5 hours

cd $HOME
apt install lz4
sudo systemctl stop uniond
cp $HOME/.union/data/priv_validator_state.json $HOME/.union/priv_validator_state.json.backup
rm -rf $HOME/.union/data