# Node Installation

## [EXPLORER](https://explorer.stavr.tech/Union-Testnet)

* **Minimum hardware requirements**:

| Node Type | CPU | RAM | Storage |
| --------- | --- | --- | ------- |
| Testnet   | 4   | 8GB | 150GB   |

## 1) Auto\_install script

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

## 2) Manual installation

#### Preparing the server

```bash
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

```bash
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

```bash
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

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

### Create/recover wallet

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

### Download Genesis

```python
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

```bash
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)

```bash
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)

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

### Download addrbook

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

## Create a service file

```bash
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

```bash
SNAP_RPC=https://union.rpc.t.stavr.tech:443
peers="59d554ab6bee4d814afb3e15af4031df19b2084c@union-t.seed.stavr.tech: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

```bash
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
curl -o - -L https://union-t.snapshot.stavr.tech/union-snap.tar.lz4 | lz4 -c -d - | tar -x -C $HOME/.union --strip-components 2
curl -o - -L https://union-t.wasm.stavr.tech/wasm-union.tar.lz4 | lz4 -c -d - | tar -x -C $HOME/.union --strip-components 2
mv $HOME/.union/priv_validator_state.json.backup $HOME/.union/data/priv_validator_state.json
wget -O $HOME/.union/config/addrbook.json "https://raw.githubusercontent.com/obajay/nodes-Guides/main/Projects/Union/addrbook.json"
sudo systemctl restart uniond && journalctl -u uniond -f -o cat
```

### Start

```bash
sudo systemctl daemon-reload
sudo systemctl enable uniond
sudo systemctl restart uniond && sudo journalctl -fu uniond -o cat
```

#### Create validator

```python
#pubkey
uniond tendermint show-validator --home /root/.union
cd $HOME
nano validator.json
{
  "pubkey": {#pubkey},
  "amount": "1000000muno",
  "moniker": "STAVR_Guide",
  "identity": "",
  "website": "",
  "security": "",
  "details": "",
  "commission-rate": "0.1",
  "commission-max-rate": "0.2",
  "commission-max-change-rate": "0.1",
  "min-self-delegation": "1"
}

uniond --home /root/.union tx staking create-validator /root/validator.json --from Wallet_name  --chain-id union-testnet-8
```

## [🧩Services and Tools🧩](https://stavr-team.gitbook.io/nodes-guides/testnets/union/statesync-snapshot)

## Monitoring

You can set up your node status alarm here - [Monitoring](https://stavr-team.gitbook.io/nodes-guides/monitoring)

## Security

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

[TMKMS](https://stavr-team.gitbook.io/nodes-guides/tmkms)               [Wallet Security](https://stavr-team.gitbook.io/nodes-guides/wallet-security)

### Delete node

```bash
sudo systemctl stop uniond
sudo systemctl disable uniond
rm /etc/systemd/system/uniond.service
sudo systemctl daemon-reload
cd $HOME
rm -rf .union
rm -rf $(which uniond)
```


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