Add Automated agent install script for debian/ubuntu

supplemental/scripts/install-agent.sh

@@ -0,0 +1,114 @@
+#!/bin/bash
+version=0.0.1
+# Define default values
+PORT=45876
+
+# Read command line options
+while getopts ":k:p:uh" opt; do
+  case $opt in
+    k) KEY="$OPTARG";;
+    p) PORT="$OPTARG";;
+    u) UNINSTALL="true";;
+    h) echo "Beszel Agent installation script"; echo ""
+       echo "Usage: ./install.sh [options]"; echo ""
+       echo "Options: "
+       echo "  -k  : SSH key (required, or interactive if not provided)"; echo ""
+       echo "  -p  : Port (default: $PORT)"; echo ""
+       echo "  -u  : Uninstall the Beszel Agent"; echo ""
+       echo "  -h  : Display this help message"; echo ""
+       exit 0;;
+    \?) echo "Invalid option: -$OPTARG"; exit 1;;
+  esac
+done
+
+if [ "$UNINSTALL" = "true" ]; then
+  # Stop and disable the Beszel Agent service
+  echo "Stopping and disabling the Beszel Agent service..."
+  sudo systemctl stop beszel-agent.service
+  sudo systemctl disable beszel-agent.service
+
+  # Remove the systemd service file
+  echo "Removing the systemd service file..."
+  sudo rm /etc/systemd/system/beszel-agent.service
+
+  # Reload the systemd daemon
+  echo "Reloading the systemd daemon..."
+  sudo systemctl daemon-reload
+
+  # Remove the Beszel Agent directory
+  echo "Removing the Beszel Agent directory..."
+  sudo rm -rf /opt/beszel-agent
+
+  # Remove the dedicated user for the Beszel Agent service
+  echo "Removing the dedicated user for the Beszel Agent service..."
+  sudo userdel beszel
+
+  echo "The Beszel Agent has been uninstalled successfully!"
+else
+  # Check if the distribution is supported
+  if [ "$(cat /etc/os-release | grep '^ID=')" != "ID=debian" ] && [ "$(cat /etc/os-release | grep '^ID=')" != "ID=ubuntu" ] && [ "$(cat /etc/os-release | grep '^ID_LIKE=')" != "ID_LIKE=debian" ]; then
+    echo "Error: This script only supports Debian and Ubuntu distributions."
+    exit 1
+  fi
+
+  # If no SSH key is provided, ask for the SSH key interactively
+  if [ -z "$KEY" ]; then
+    read -p "Enter your SSH key: " KEY
+  fi
+
+  # Check if necessary packages are installed
+  sudo apt update
+  sudo apt install -y tar curl
+
+  # Create a dedicated user for the service if it doesn't exist
+  if ! id -u beszel-agent > /dev/null 2>&1; then
+    echo "Creating a dedicated user for the Beszel Agent service..."
+    sudo useradd -m -s /bin/false beszel
+  fi
+
+  # Create the directory for the Beszel Agent
+  if [ ! -d "/opt/beszel-agent" ]; then
+    echo "Creating the directory for the Beszel Agent..."
+    sudo mkdir -p /opt/beszel-agent
+    sudo chown beszel:beszel /opt/beszel-agent
+    sudo chmod 755 /opt/beszel-agent
+  fi
+
+  # Download and install the Beszel Agent
+  echo "Downloading and installing the Beszel Agent..."
+  curl -sL "https://github.com/henrygd/beszel/releases/latest/download/beszel-agent_$(uname -s)_$(uname -m | sed 's/x86_64/amd64/' | sed 's/armv7l/arm/' | sed 's/aarch64/arm64/').tar.gz" | tar -xz -C /opt/beszel-agent -f - beszel-agent
+  sudo chown beszel:beszel /opt/beszel-agent/beszel-agent
+  sudo chmod 755 /opt/beszel-agent/beszel-agent
+
+  # Create the systemd service
+  echo "Creating the systemd service for the Beszel Agent..."
+  sudo tee /etc/systemd/system/beszel-agent.service <<EOF
+[Unit]
+Description=Beszel Agent Service
+After=network.target
+
+[Service]
+Environment="PORT=$PORT"
+Environment="KEY=$KEY"
+ExecStart=/opt/beszel-agent/beszel-agent
+User=beszel
+Restart=always
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+  # Load and start the service
+  echo "Loading and starting the Beszel Agent service..."
+  sudo systemctl daemon-reload
+  sudo systemctl enable beszel-agent.service
+  sudo systemctl start beszel-agent.service
+
+  # Check if the service is running
+  if [ "$(systemctl is-active beszel-agent.service)" != "active" ]; then
+    echo "Error: The Beszel Agent service is not running."
+    exit 1
+  fi
+
+  echo "The Beszel Agent has been installed and configured successfully! It is now running on port $PORT."
+fi