# Node Installation

## [EXPLORER](https://explorer.stavr.tech/Vidulum-Mainnet)

* **Minimum hardware requirements**:

| Node Type | CPU | RAM  | Storage |
| --------- | --- | ---- | ------- |
| Mainnet   | 8   | 16GB | 250GB   |

## 1) Auto\_install script

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

## 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 18.10.22

```bash
cd $HOME && mkdir -p go/bin/
git clone https://github.com/vidulum/mainnet vidulum
cd vidulum
git checkout v1.2.0
make install
```

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

* version: 1.2.0
* commit: latest

## Initiation

```python
vidulumd init STAVR_guide --chain-id=vidulum-1
vidulumd config chain-id vidulum-1
```

### Create/recover wallet

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

### Download Genesis

```python
wget -O $HOME/.vidulum/config/genesis.json "https://raw.githubusercontent.com/111STAVR111/props/main/Vidulum/genesis.json"
```

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

* fa4c12c5c7e796a3804960cd502edb8a3171f3c5dd421a1ce69b96351cd785a3

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

```bash
sed -i.bak -e "s/^minimum-gas-prices *=.*/minimum-gas-prices = \"0.001uvdl\"/;" ~/.vidulum/config/app.toml
external_address=$(wget -qO- eth0.me) 
sed -i.bak -e "s/^external_address *=.*/external_address = \"$external_address:26656\"/" $HOME/.vidulum/config/config.toml
peers=""
sed -i.bak -e "s/^persistent_peers *=.*/persistent_peers = \"$peers\"/" $HOME/.vidulum/config/config.toml
seeds=""
sed -i.bak -e "s/^seeds =.*/seeds = \"$seeds\"/" $HOME/.vidulum/config/config.toml
sed -i 's/max_num_inbound_peers =.*/max_num_inbound_peers = 50/g' $HOME/.vidulum/config/config.toml
sed -i 's/max_num_outbound_peers =.*/max_num_outbound_peers = 50/g' $HOME/.vidulum/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\"/" $HOME/.vidulum/config/app.toml
sed -i -e "s/^pruning-keep-recent *=.*/pruning-keep-recent = \"$pruning_keep_recent\"/" $HOME/.vidulum/config/app.toml
sed -i -e "s/^pruning-keep-every *=.*/pruning-keep-every = \"$pruning_keep_every\"/" $HOME/.vidulum/config/app.toml
sed -i -e "s/^pruning-interval *=.*/pruning-interval = \"$pruning_interval\"/" $HOME/.vidulum/config/app.toml
```

#### Indexer (optional)

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

### Download addrbook

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

## Create a service file

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

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

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

## StateSync Vidulum Mainnet

```bash
SNAP_RPC=https://vidulum.rpc.m.stavr.tech:443
SEEDS=197f4d559555de6b7fe360c6a926ca8812a749be@vidulum.peer.stavr.tech:1046
cp $HOME/.vidulum/data/priv_validator_state.json $HOME/.vidulum/priv_validator_state.json.backup
sed -i -e "/seeds =/ s/= .*/= \"$SEEDS\"/"  $HOME/.vidulum/config/config.toml
LATEST_HEIGHT=$(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/.vidulum/config/config.toml
vidulumd tendermint unsafe-reset-all --home $HOME/.vidulum
mv $HOME/.vidulum/priv_validator_state.json.backup $HOME/.vidulum/data/priv_validator_state.json
wget -O $HOME/.vidulum/config/addrbook.json "https://raw.githubusercontent.com/111STAVR111/props/main/Vidulum/addrbook.json"
sudo systemctl restart vidulumd && journalctl -fu vidulumd -o cat
```

## SnapShot Mainnet updated every 5 hours

```bash
cd $HOME
apt install lz4
sudo systemctl stop vidulumd
cp $HOME/.vidulum/data/priv_validator_state.json $HOME/.vidulum/priv_validator_state.json.backup
rm -rf $HOME/.vidulum/data
curl -o - -L https://vidulum.snapshot.stavr.tech/vidulum-snap.tar.lz4 | lz4 -c -d - | tar -x -C $HOME/.vidulum --strip-components 2
mv $HOME/.vidulum/priv_validator_state.json.backup $HOME/.vidulum/data/priv_validator_state.json
wget -O $HOME/.vidulum/config/addrbook.json "https://raw.githubusercontent.com/111STAVR111/props/main/Vidulum/addrbook.json"
sudo systemctl restart vidulumd && journalctl -fu vidulumd -o cat
```

### Start

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

#### Create validator

```python
vidulumd tx staking create-validator \
--commission-rate 0.1 \
--commission-max-rate 0.2 \
--commission-max-change-rate 0.1 \
--min-self-delegation "1" \
--amount=1000000uvdl \
--pubkey $(vidulumd tendermint show-validator) \
--from <wallet> \
--moniker="STAVR_guide" \
--chain-id vidulum-1 \
--fees="20000uvdl" \
--identity="" \
--website="" \
--details="" -y
```

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

### Delete node

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


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