Alloy install

#!/usr/bin/env bash
set -euo pipefail

# 1. Ensure running as root
if [[ $EUID -ne 0 ]]; then
  echo "Please run as root or with sudo."
  exit 1
fi

# 2. (Optional) Check Ubuntu version
. /etc/os-release
if [[ "$VERSION_ID" != "24.04" ]]; then
  echo "Warning: This is tailored for Ubuntu 24.04 but you're on $PRETTY_NAME."
fi

# 3. Install prerequisites
apt-get update
apt-get install -y gpg wget gnupg

# 4. Add Grafana APT repo and GPG key
mkdir -p /etc/apt/keyrings
wget -q -O - https://apt.grafana.com/gpg.key \
  | gpg --dearmor \
  | tee /etc/apt/keyrings/grafana.gpg > /dev/null

cat <<EOF | tee /etc/apt/sources.list.d/grafana.list
deb [signed-by=/etc/apt/keyrings/grafana.gpg] https://apt.grafana.com stable main
EOF

# 5. Update and install Alloy
apt-get update
apt-get install -y alloy

# 6. Enable and start the service
systemctl daemon-reload
systemctl enable --now alloy

echo
echo "✔ Grafana Alloy has been installed and started."
echo "→ Check status with: systemctl status alloy"