Backup and ZFS Snapshots

apt install -y sanoid

nano /etc/sanoid/sanoid.conf

[rpool/vm-101-disk-0]
use_template = production

[rpool/vm-102-disk-0]
use_template = production

[rpool/vm-103-disk-0]
use_template = production

[rpool/vm-104-disk-0]
use_template = production

[rpool/vm-105-disk-0]
use_template = production

[rpool/vm-106-disk-0]
use_template = production

[template_production]
frequently = 0
hourly = 24
daily = 7
weekly = 4
monthly = 3
yearly = 0
autosnap = yes
autoprune = yes

systemctl enable sanoid.timer
systemctl start sanoid.timer

cat > /root/backup-replication.sh << 'EOF'
#!/bin/bash
STORAGE_BOX="u12345@u12345.your-storagebox.de"
BACKUP_PATH="/backup/proxmox"
DATE=$(date +%Y%m%d_%H%M%S)

mkdir -p /tmp/zfs-backup-$DATE

for vm in 101 102 103 104 105 106; do
    echo "Backing up VM $vm..."
    zfs send rpool/vm-${vm}-disk-0@autosnap_$(date +%Y-%m-%d) | \
    gzip > /tmp/zfs-backup-$DATE/vm-${vm}.gz
    scp /tmp/zfs-backup-$DATE/vm-${vm}.gz ${STORAGE_BOX}:${BACKUP_PATH}/
done

rm -rf /tmp/zfs-backup-$DATE
echo "Backup completed: $DATE"
EOF

chmod +x /root/backup-replication.sh

crontab -e

0 2 * * 0 /root/backup-replication.sh >> /var/log/backup.log 2>&1