install-proxmox.sh

#!/bin/bash

# Colors
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m'

echo -e "${GREEN}=== Starting Proxmox Installation on Debian 12 ===${NC}"

# Set hostname
echo -e "${YELLOW}Setting hostname...${NC}"
hostnamectl set-hostname prox.yourdomain.com
echo "94.130.137.39 prox.yourdomain.com prox" >> /etc/hosts

# Add Proxmox repository
echo -e "${YELLOW}Adding Proxmox repositories...${NC}"
wget https://enterprise.proxmox.com/debian/proxmox-release-bookworm.gpg \
  -O /etc/apt/trusted.gpg.d/proxmox-release-bookworm.gpg

echo "deb http://download.proxmox.com/debian/pve bookworm pve-no-subscription" \
  > /etc/apt/sources.list.d/pve-install-repo.list

# Update and install Proxmox
echo -e "${YELLOW}Installing Proxmox VE...${NC}"
apt update && apt full-upgrade -y
DEBIAN_FRONTEND=noninteractive apt install -y proxmox-ve postfix open-iscsi chrony

# Remove Debian kernel
apt remove -y linux-image-amd64 'linux-image-6.1*'
update-grub

# Remove enterprise repository
rm -f /etc/apt/sources.list.d/pve-enterprise.list

# Optimize for NVMe Gen 4
echo -e "${YELLOW}Optimizing for NVMe Gen 4...${NC}"
cat >> /etc/sysctl.conf << EOF

# NVMe Optimization
vm.swappiness=10
vm.dirty_ratio=15
vm.dirty_background_ratio=5
vm.vfs_cache_pressure=50
EOF

sysctl -p

# Configure firewall
echo -e "${YELLOW}Configuring firewall...${NC}"
ufw allow 22/tcp
ufw allow 8006/tcp
ufw allow 6789/tcp
echo "y" | ufw enable

echo -e "${GREEN}=== Installation Complete! ===${NC}"
echo -e "${GREEN}Rebooting in 10 seconds...${NC}"
echo -e "${GREEN}Access Proxmox at: https://94.130.137.39:8006${NC}"
echo -e "${YELLOW}Username: root${NC}"
echo -e "${YELLOW}Password: Your NEW root password${NC}"

sleep 10
reboot