> 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/archive/lambda-m-halt/node-installation.md).

# Node Installation

## [EXPLORER](https://explorer.stavr.tech/Lambda)

* **Minimum hardware requirements**:

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

## 1) Auto\_install script

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

## 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 29.07.23

```bash
cd $HOME && mkdir -p go/bin/
git clone https://github.com/LambdaIM/lambdavm.git && cd lambdavm
git checkout v1.0.1
make install
```

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

* version: 1.0.1
* commit: de7a3fce6d009590fd9664a7484be4c1ef0c3171

## Initiation

```python
lambdavm init STAVR_guide --chain-id=lambda_92000-1
lambdavm config chain-id lambda_92000-1
```

### Create/recover wallet

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

### Download Genesis

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

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

* 1ff02001539bc1e9828fe170006f055c04df280c61c4ca9ecc9e7b6a272b7777

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

```bash
sed -i -e "s/^minimum-gas-prices *=.*/minimum-gas-prices = \"0.01ulamb\"/" $HOME/.lambdavm/config/app.toml
sed -i -e "s/^filter_peers *=.*/filter_peers = \"true\"/" $HOME/.lambdavm/config/config.toml
external_address=$(wget -qO- eth0.me) 
sed -i.bak -e "s/^external_address *=.*/external_address = \"$external_address:26656\"/" $HOME/.lambdavm/config/config.toml
peers=""
sed -i.bak -e "s/^persistent_peers *=.*/persistent_peers = \"$peers\"/" $HOME/.lambdavm/config/config.toml
seeds=""
sed -i.bak -e "s/^seeds =.*/seeds = \"$seeds\"/" $HOME/.lambdavm/config/config.toml
sed -i 's/max_num_inbound_peers =.*/max_num_inbound_peers = 50/g' $HOME/.lambdavm/config/config.toml
sed -i 's/max_num_outbound_peers =.*/max_num_outbound_peers = 50/g' $HOME/.lambdavm/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\"/" $HOME/.lambdavm/config/app.toml
sed -i -e "s/^pruning-keep-recent *=.*/pruning-keep-recent = \"$pruning_keep_recent\"/" $HOME/.lambdavm/config/app.toml
sed -i -e "s/^pruning-keep-every *=.*/pruning-keep-every = \"$pruning_keep_every\"/" $HOME/.lambdavm/config/app.toml
sed -i -e "s/^pruning-interval *=.*/pruning-interval = \"$pruning_interval\"/" $HOME/.lambdavm/config/app.toml
```

#### Indexer (optional)

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

### Download addrbook

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

## Create a service file

```bash
sudo tee /etc/systemd/system/lambdavm.service > /dev/null <<EOF
[Unit]
Description=lambdavm
After=network-online.target
[Service]
User=$USER
ExecStart=$(which lambdavm) start
Restart=on-failure
RestartSec=3
LimitNOFILE=65535
[Install]
WantedBy=multi-user.target
EOF
```

## StateSync Lambda Mainnet

```bash
SNAP_RPC=https://lambda.rpc.m.stavr.tech:443
peers="ebdd47f7babb184240258d2fc6fba61bd994edaa@lambda.peer.stavr.tech:31326" 
sed -i.bak -e "s/^seeds *=.*/seeds = \"$SEEDS\"/; s/^persistent_peers *=.*/persistent_peers = \"$PEERS\"/" $HOME/.lambdavm/config/config.toml
LATEST_HEIGHT=$(curl -s $SNAP_RPC/block | jq -r .result.block.header.height); \
BLOCK_HEIGHT=$((LATEST_HEIGHT - 100)); \
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/.lambdavm/config/config.toml
lambdavm tendermint unsafe-reset-all --home $HOME/.lambdavm
wget -O $HOME/.lambdavm/config/addrbook.json "https://raw.githubusercontent.com/111STAVR111/props/main/Lambda/addrbook.json"
systemctl restart lambdavm && journalctl -fu lambdavm -o cat
```

## SnapShot Mainnet updated every 5 hours

```bash
cd $HOME
apt install lz4
sudo systemctl stop lambdavm
cp $HOME/.lambdavm/data/priv_validator_state.json $HOME/.lambdavm/priv_validator_state.json.backup
rm -rf $HOME/.lambdavm/data
curl -o - -L http://lambda.snapshot.stavr.tech:5016/lambda/lambda-snap.tar.lz4 | lz4 -c -d - | tar -x -C $HOME/.lambdavm --strip-components 2
mv $HOME/.lambdavm/priv_validator_state.json.backup $HOME/.lambdavm/data/priv_validator_state.json
wget -O $HOME/.lambdavm/config/addrbook.json "https://raw.githubusercontent.com/111STAVR111/props/main/Lambda/addrbook.json"
sudo systemctl restart lambdavm && sudo journalctl -u lambdavm -f -o cat
```

### Start

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

#### Create validator

```python
lambdavm tx staking create-validator \
  --amount="1000000000000000000"ulamb \
  --pubkey=$(lambdavm tendermint show-validator) \
  --moniker=STAVR_guide \
  --chain-id=lambda_92000-1 \
  --commission-rate="0.10" \
  --commission-max-rate="0.20" \
  --commission-max-change-rate="0.1" \
  --min-self-delegation="1" \
  --from=<walletName> \
  --fees 3500ulamb \
  --gas 350000 \
  --identity="" \
  --details="" \
  --website="" -y
```

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

### Delete node

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


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