> For the complete documentation index, see [llms.txt](https://stavr-team.gitbook.io/nodes-guides/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://stavr-team.gitbook.io/nodes-guides/testnets/selfchain-t/node-installation.md).

# Node Installation

## [EXPLORER](https://explorer.stavr.tech/Selfchain-testnet)

* **Minimum hardware requirements**:

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

## 1) Auto\_install script

```bash
wget -O selft https://raw.githubusercontent.com/111STAVR111/props/refs/heads/main/Selfchain/Testnet/selft && chmod +x selft && ./selft
```

## 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 21.03.25

```bash
cd $HOME && mkdir -p go/bin/
wget -O selfchaind https://server-1.stavr.tech/Testnet/Selfchain/selfchaind
chmod +x selfchaind
mv selfchaind /root/go/bin/
```

`selfchaind version --long | grep -e commit -e version`

* version: ""
* commit: ""

## Initiation

```python
selfchaind init STAVR_guide --chain-id=selfchain-testnet
selfchaind config chain-id selfchain-testnet
```

### Create/recover wallet

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

### Download Genesis and Addrbook

```python
wget -L -O $HOME/.selfchain/config/genesis.json "https://server-1.stavr.tech/Testnet/Selfchain/genesis.json"
wget -O $HOME/.selfchain/config/addrbook.json "https://server-1.stavr.tech/Testnet/Selfchain/addrbook.json"
```

`sha256sum $HOME/.selfchain/config/genesis.json`

* 43289ed986a7dc168947d28ea16bdf481054335daebf9539489634f08d80944b

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

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

#### Indexer (optional)

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

## Create a service file

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

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

[Install]
WantedBy=multi-user.target
EOF
```

## StateSync Selfchain Testnet

```bash
SOOON
```

## SnapShot Testnet updated every 5 hours

{% hint style="success" %}
<https://server-1.stavr.tech/Testnet/Selfchain/>
{% endhint %}

```bash
cd $HOME
apt install lz4
sudo systemctl stop selfchaind
cp $HOME/.selfchain/data/priv_validator_state.json $HOME/.selfchain/priv_validator_state.json.backup
rm -rf $HOME/.selfchain/data
LATEST_SNAPSHOT=$(curl -s https://server-1.stavr.tech/Testnet/Selfchain/ | grep -oE 'self-snap-[0-9]+\.tar\.lz4' | while read SNAPSHOT; do HEIGHT=$(curl -s "https://server-1.stavr.tech/Testnet/Selfchain/${SNAPSHOT%.tar.lz4}-info.txt" | awk '/Block height:/ {print $3}'); echo "$SNAPSHOT $HEIGHT"; done | sort -k2 -nr | head -n 1 | awk '{print $1}')
curl -o - -L https://server-1.stavr.tech/Testnet/Selfchain/$LATEST_SNAPSHOT | lz4 -c -d - | tar -x -C $HOME/.selfchain
mv $HOME/.selfchain/priv_validator_state.json.backup $HOME/.selfchain/data/priv_validator_state.json
wget -O $HOME/.selfchain/config/addrbook.json "https://server-1.stavr.tech/Testnet/Selfchain/addrbook.json"
sudo systemctl restart selfchaind && journalctl -fu selfchaind -n100 -ocat
```

### Start

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

#### Create validator

```python
selfchaind tx staking create-validator \
  --amount=1000000uslf \
  --pubkey=$(selfchaind tendermint show-validator) \
  --moniker="STAVR_Guide" \
  --details="" \
  --identity="" \
  --website="" \
  --chain-id="selfchain-testnet" \
  --commission-rate="0.10" \
  --commission-max-rate="0.10" \
  --commission-max-change-rate="0.1" \
  --min-self-delegation="1" \
  --from=Yourwallet -y
```

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

### Delete node

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