# Liquidity with NuBot

## Exchange (SouthXchange)

- Create account.
- Enable multi-factor authentication.
- Enable API access.
- Create API key.
- Restrict API access to IP of gateway (consider).

## Setup VPS

- Create Droplet on DigitalOcean.
  - Use Ubuntu LTS.
  - Choose specifications.
  - Activate backups?
  - Select SSH key.
- Open console and note its fingerprint. Compare at SSH login.

## Set SSH alias for VPS

```sh
vpsip=
cat << EOF >> ~/.ssh/config
Host southxchange
    User nu
    HostName $vpsip
EOF
```

## NuBot on VPS

```sh
ssh root@southxchange
```

### Add user `nu` without password

*Passwordless logins are denied by default.*

```sh
adduser nu --disabled-pass‐word
```

```sh
mkdir /home/nu/.ssh
chown nu:nu /home/nu/.ssh
chmod 700 /home/nu/.ssh
cat /root/.ssh/authorized_keys >> /home/nu/.ssh/authorized_keys
chown nu:nu /home/nu/.ssh/authorized_keys
```

### Install unarchiver

```sh
apt install -y unzip
```

### Install Java

```sh
apt-add-repository ppa:webupd8team/java
```

Press Enter.

```sh
apt update
apt install -y oracle-java8-installer
```

Accept the terms for Java. (Enter, Left, Enter)

**Firewall:**

```sh
ufw allow ssh/tcp
ufw show added
ufw enable
```

Press Y, Enter.

**Automatic security updates:**

Won't reboot.

```sh
dpkg-reconfigure --priority=low unattended-upgrades
```

## Setup NuBot

```sh
ssh nu@southxchange
```

```sh
curl -LO https://bitbucket.org/JordanLeePeershares/nubottrading/downloads/nubot-v0.5.0-RC11.zip
unzip nubot-v0.5.0-RC11.zip
```

```sh
ln -s nubot-v0.5.0-RC11.zip southxchange_usnbt-usd
```

### Auth key (required for streamer server)

Key for protected credentials in NuBot.

```sh
AUTHKEY=
echo "$AUTHKEY" > ~/southxchange_usnbt-usd/res/authkey.txt
```

### NuBot config

```sh
cd southxchange_usnbt-usd/config
ln -s ../../southxchange_usnbt-usd.json nubot-config.json
```

```
APIKEY=
APISECRET=
cat << EOF > ~/southxchange_usnbt-usd.json
{
  "exchangeName": "southxchange",
  "pair": "nbt_btc",
  "txFee": 0.4,

  "apiKey": "$APIKEY",
  "apiSecret": "$APISECRET",
  
  "bypassStreaming": false,
  "streamingServer": "price.crypto-daio.co.uk:5556",

  "verbosity": "high",
  "executeOrders": true,

  "bookDisableTier2": true,
  "bookBuyWall": 10,
  "bookBuyOffset": 0.005,
  "bookSellWall": 10,
  "bookSellOffset": 0.005,

  "submitLiquidity": false,

  "mailNotifications": "none"
}
EOF
```

## Autostart

```sh
cat << 'EOF' > ~/start
```
```
#!/usr/bin/env sh
tmux new-session -d -s "NuBot" -n "Debug" "$SHELL"
tmux new-window -n "USNBT-USD" "cd southxchange_usnbt-usd && java -jar NuBot.jar -server -cfg=../southxchange_usnbt-usd.json ; $SHELL || $SHELL"```
```
EOF
```

```sh
chmod +x ~/start
```

#### Cron autostart

```sh
crontab -e
```

```
@reboot /home/nu/start
```