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Upgrade script for Proxmox from 8.x to 9
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| #!/bin/bash | |
| set -euo pipefail | |
| echo "=== Proxmox VE 8.4 → 9.0 Upgrade Script ===" | |
| echo "!! WARNING: BACKUP ALL VMs/CTs AND CONFIGS BEFORE CONTINUING !!" | |
| read -p "Press Enter to continue or Ctrl+C to abort..." | |
| # 1. Verify current version | |
| if ! pveversion | grep -q "pve-manager/8"; then | |
| echo "Error: This script is only for Proxmox VE 8.x systems." | |
| exit 1 | |
| fi | |
| # 2. Run pre-upgrade checker | |
| echo "=== Running pre-upgrade check ===" | |
| apt update | |
| apt install -y pve8to9 | |
| pve8to9 --full || { | |
| echo "Pre-upgrade check failed. Fix issues before running again." | |
| exit 1 | |
| } | |
| # 3. Backup sources list files | |
| echo "=== Backing up APT sources ===" | |
| mkdir -p /root/apt-sources-backup | |
| cp -v /etc/apt/sources.list /root/apt-sources-backup/sources.list.bak | |
| cp -v /etc/apt/sources.list.d/* /root/apt-sources-backup/ || true | |
| # 4. Switch Debian repos from bookworm → trixie | |
| echo "=== Updating Debian repos to 'trixie' ===" | |
| sed -i 's/bookworm/trixie/g' /etc/apt/sources.list /etc/apt/sources.list.d/*.list || true | |
| # 5. Update Proxmox repo to version 9 | |
| echo "=== Updating Proxmox VE repos to 9.x ===" | |
| sed -i 's/bookworm/trixie/g' /etc/apt/sources.list.d/pve-install-repo.list || true | |
| # 6. Update package lists | |
| apt update | |
| # 7. Perform full upgrade | |
| echo "=== Starting full distribution upgrade ===" | |
| apt dist-upgrade -y | |
| # 8. Cleanup old packages | |
| echo "=== Cleaning up ===" | |
| apt autoremove --purge -y | |
| apt clean | |
| # 9. Prompt for reboot | |
| echo "=== Upgrade complete ===" | |
| echo "System must be rebooted to finish the upgrade." | |
| read -p "Press Enter to reboot now or Ctrl+C to cancel..." | |
| reboot |
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