# Node Installation

## [TELEMETRY](https://telemetry.polkadot.io/#list/0x44f68476df71ebf765b630bf08dc1e0fedb2bf614a1aa0563b3f74f20e47b3e0)

* **Minimum hardware requirements**:

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

#### 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 31.07.25

```python
mkdir -p $HOME/.tangle && cd $HOME/.tangle
wget -O tangle https://github.com/tangle-network/tangle/releases/download/v1.4.0/tangle-default-linux-amd64
chmod 744 tangle
mv tangle /usr/bin/
wget -O $HOME/.tangle/tangle-mainnet.json "https://raw.githubusercontent.com/webb-tools/tangle/main/chainspecs/mainnet/tangle-mainnet.json"
chmod 744 ~/.tangle/tangle-mainnet.json
# Проверим json
sha256sum ~/.tangle/tangle-mainnet.json
# b640e7fb959066ce29a3ddece42f17cc4e76b4383fd57e4f4249e2c80bff8a00
```

`tangle --version`

* tangle 1.4.0-06942006848

### Creating Keys

`Acco`

```bash
tangle key insert --base-path $HOME/.tangle/data/ \
--chain $HOME/.tangle/tangle-mainnet.json \
--scheme Sr25519 \
--suri "<SEED_PHRASE-12>" \
--key-type acco
```

`Babe`

```python
tangle key insert --base-path $HOME/.tangle/data/ \
--chain $HOME/.tangle/tangle-mainnet.json \
--scheme Sr25519 \
--suri "<SEED_PHRASE-12>" \
--key-type babe
```

`Imonline`

```python
tangle key insert --base-path $HOME/.tangle/data/ \
--chain $HOME/.tangle/tangle-mainnet.json \
--scheme Sr25519 \
--suri "<SEED_PHRASE-12>" \
--key-type imon
```

`Role`

```python
tangle key insert --base-path $HOME/.tangle/data/ \
--chain $HOME/.tangle/tangle-mainnet.json \
--scheme Ecdsa \
--suri "<SEED_PHRASE-12>" \
--key-type role
```

`Grandpa`

```python
tangle key insert --base-path $HOME/.tangle/data/ \
--chain $HOME/.tangle/tangle-mainnet.json \
--scheme Ed25519 \
--suri "<SEED_PHRASE-12>" \
--key-type gran
```

`ls $HOME/.tangle/data/chains/tangle-mainnet/keystore/`

## Create a service file

```python
yourname=<name>
```

```python
tee /etc/systemd/system/tangle.service > /dev/null << EOF
[Unit]
Description=Tangle Validator Node
After=network-online.target
StartLimitIntervalSec=0
[Service]
User=$USER
Restart=always
RestartSec=3
LimitNOFILE=65535
ExecStart=/usr/bin/tangle \
  --base-path $HOME/.tangle/data/ \
  --name '$yourname' \
  --chain $HOME/.tangle/tangle-mainnet.json \
  --node-key-file "$HOME/.tangle/node-key" \
  --port 30333 \
  --rpc-port 9933 \
  --prometheus-port 9515 \
  --validator \
  --pruning archive \
  --telemetry-url "wss://telemetry.polkadot.io/submit/ 1"
  --no-mdns
[Install]
WantedBy=multi-user.target
EOF
```

### Start

```python
systemctl daemon-reload
systemctl enable tangle
systemctl restart tangle && journalctl -fu tangle -o cat
```

* After launch, we wait for our node to synchronize. You can track our condition using telemetry

## [TELEMETRY](https://telemetry.polkadot.io/#list/0x44f68476df71ebf765b630bf08dc1e0fedb2bf614a1aa0563b3f74f20e47b3e0)

* After the node has synchronized, we pull out the key from our node by entering the command

```python
curl -H "Content-Type: application/json" -d '{"id":1, "jsonrpc":"2.0", "method": "author_rotateKeys", "params":[]}' http://localhost:9933
```

### BACKUP

🟢 save the located keys in `$HOME/.tangle/node-key` and `$HOME/.tangle/data/validator/YOURNAME/chains/tangle-testnet/keystore/`

### Creating a validator

* Go to the [website](https://polkadot.js.org/apps/?rpc=wss%3A%2F%2Frpc.tangle.tools#/accounts) and first create a wallet
* We create a validator. To do this, select `Network - Staking - Accounts - Validator`

`logs`

```bash
journalctl -fu tangle -o cat
```

`restart`

```bash
systemctl restart tangle && journalctl -fu tangle -o cat
```

`delete node`

```bash
systemctl stop tangle &&
systemctl disable tangle &&
rm /etc/systemd/system/tangle.service &&
systemctl daemon-reload &&
cd
rm -r .tangle
```


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