private-schrijfsels-en-notities/2025/xg-infra-guava.md

Dedibox Scaleway Online.net

51.158.149.123
Reverse	51-158-149-123.rev.poneytelecom.eu.

Installation btrfs /data

• Create big /data/ disk as ext4 (via webgui)
• umount /data
• Install btrfs tools: apt install btrfs-progs
• List disks: fdisk -l
• Format whole partition to btrfs: /sbin/mkfs.btrfs -f /dev/sda4
• Install neovim: apt install neovim
• Get disk UUID: blkid
• Add entry in fstab:
  • UUID=2e4ffa36-579c-4c46-8cca-0f3ba79f5e21 /data btrfs noatime 0 0
• systemctl daemon-reload && mount -a && df -h

Serial console

• https://www.scaleway.com/en/docs/dedibox/how-to/use-serial-console/

Firewall

• https://wiki.debian.org/DebianFirewall
• apt install iptables
• /usr/local/sbin/firewall-enable.sh
• /etc/systemd/system/firewall.service
• Run in tmux so firewall testing can be done:
  • systemctl start firewall && sleep 120 && /usr/local/sbin/firewall-disable.sh
  • /sbin/iptables -L -n -v
• Check if firewall works within 120 seconds (then it is disabled)
• Enable firewall at boot: systemctl enable firewall.service

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