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Linux deployment

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1. VPS Infrastructure Setup

1

Provision VPS Instances

Create 3-5 VPS instances with the following specifications: - CPU: 4-8 cores - RAM: 16-32GB - Storage: 500GB+ SSD - OS: Ubuntu 22.04 LTS - Network: Private networking enabled
2

Configure Base System

# Update system (run on all nodes) sudo apt update && sudo apt upgrade
-y # Install required packages sudo apt install -y curl wget unzip htop iotop
# Configure firewall sudo ufw allow ssh sudo ufw allow 8080 # Dgraph Alpha
HTTP sudo ufw allow 9080 # Dgraph Alpha gRPC sudo ufw allow 5080 # Dgraph Zero
sudo ufw allow 6080 # Dgraph Zero HTTP sudo ufw enable # Set up swap (if
needed) sudo fallocate -l 4G /swapfile sudo chmod 600 /swapfile sudo mkswap
/swapfile sudo swapon /swapfile echo '/swapfile none swap sw 0 0' | sudo tee
-a /etc/fstab ```
</Step>

<Step title="Install Dgraph">
  ```bash
  # Download and install Dgraph (run on all nodes)
  curl -sSf https://get.dgraph.io | bash
  
  # Move to system path
  sudo mv dgraph /usr/local/bin/
  
  # Create dgraph user
  sudo useradd -r -s /bin/false dgraph
  
  # Create directories
  sudo mkdir -p /opt/dgraph/{data,logs}
  sudo chown -R dgraph:dgraph /opt/dgraph

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2. Configure Dgraph Services

# Create systemd service for Zero
sudo tee /etc/systemd/system/dgraph-zero.service << 'EOF'
[Unit]
Description=Dgraph Zero
After=network.target

[Service]
Type=simple
User=dgraph
Group=dgraph
ExecStart=/usr/local/bin/dgraph zero --my=10.0.1.10:5080 --replicas=3 --idx=1 --wal=/opt/dgraph/data/zw --bindall
WorkingDirectory=/opt/dgraph
Restart=always
RestartSec=5
StandardOutput=journal
StandardError=journal
SyslogIdentifier=dgraph-zero

[Install]
WantedBy=multi-user.target
EOF

# Create systemd service for Alpha
sudo tee /etc/systemd/system/dgraph-alpha.service << 'EOF'
[Unit]
Description=Dgraph Alpha
After=network.target dgraph-zero.service
Requires=dgraph-zero.service

[Service]
Type=simple
User=dgraph
Group=dgraph
ExecStart=/usr/local/bin/dgraph alpha --my=10.0.1.10:7080 --zero=10.0.1.10:5080,10.0.1.11:5080,10.0.1.12:5080 --postings=/opt/dgraph/data/p --wal=/opt/dgraph/data/w --bindall --security whitelist=0.0.0.0/0
WorkingDirectory=/opt/dgraph
Restart=always
RestartSec=5
StandardOutput=journal
StandardError=journal
SyslogIdentifier=dgraph-alpha

[Install]
WantedBy=multi-user.target
EOF

# Enable and start services
sudo systemctl daemon-reload
sudo systemctl enable dgraph-zero dgraph-alpha
sudo systemctl start dgraph-zero
sleep 10
sudo systemctl start dgraph-alpha