box/host/teardown-host.sh
claude-hdb 5defd40bca feat!: rename the host stack too, default to blank, drill the templates, add wipe
Follow-up to the rename, per operator direction — the divergence is
reversed and the cut is complete:

- Host stack: boxnet (10.88.0.0/24 — a pre-rename host may still carry
  claudenet on 10.87, two bridges must not claim one subnet),
  box-isolate, nft tables 'inet box'/'bridge box', box-firewall.{sh,
  service}. teardown-host now strips BOTH name generations, so one
  script uninstalls a host of any age.

- Default template is blank: 'box new --name x' mints bare Debian;
  the claude box is '--template claude'. The login hint follows the
  EFFECTIVE template read off the instance, so clones of claude boxes
  still get it and blank boxes are not told to run a binary they lack.

- The drill validates templates: listing, unknown-template refusal,
  the allowlist rejecting BOX_NETWORK by name, and a full blank mint —
  default resolves to blank, metadata stamped, box-net placement, exec
  lands in 'dev', no claude binary, and isolation parity (egress +
  pinned DNS) on the same contract as every template.

- drill/wipe.sh: scorched earth for drill hosts. Both tag generations,
  every drill-named instance, networks/ACLs/profiles/firewall of both
  generations, cached images, and (--purge-storage) the default pool.
  Ends by asserting the ABSENCE of every artifact rather than trusting
  the removals' exit codes.
2026-07-14 14:36:39 +00:00

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#!/usr/bin/env bash
# Reverse everything host/setup-host.sh created — and everything its pre-0.4.0
# ancestor created, so one teardown cleans a host of any generation: all boxes
# (both tags), the boxnet/claudenet networks + ACLs, the box-net/claude-dev
# profiles, and both generations of firewall units and nft tables.
# Usage: ./host/teardown-host.sh [--purge-incus]
# --purge-incus also apt-purge Incus itself (skipped if non-box
# instances still exist on this host)
set -euo pipefail
purge=false
[ "${1:-}" = "--purge-incus" ] && purge=true
echo "This removes ALL boxes (uncommitted work in them is lost), the"
echo "boxnet/claudenet networks, ACLs, profiles, and the box firewall rules"
echo "(both current and pre-0.4.0 names)."
$purge && echo "Incus itself will also be uninstalled (--purge-incus)."
read -rp "Continue? [y/N] " a
case "$a" in y|Y) ;; *) echo "aborted"; exit 1 ;; esac
# Instances — both tag generations, one delete at a time (a multi-name
# 'incus delete' aborts at the first missing name).
for tag in "user.box=1" "user.claudebox=1"; do
for i in $(incus list "$tag" -f csv -c n 2>/dev/null || true); do
echo "deleting instance $i"
incus delete -f "$i"
done
done
incus profile delete box-net 2>/dev/null || true
incus profile delete claude-dev 2>/dev/null || true # legacy, pre-0.4.0
incus network delete boxnet 2>/dev/null || true
incus network delete claudenet 2>/dev/null || true # legacy, pre-0.4.0
incus network acl delete box-isolate 2>/dev/null || true
incus network acl delete claude-isolate 2>/dev/null || true # legacy
# Boot-persistence units — both generations
sudo systemctl disable --now box-firewall.service 2>/dev/null || true
sudo systemctl disable --now claudebox-firewall.service 2>/dev/null || true
sudo rm -f /etc/systemd/system/box-firewall.service /usr/local/sbin/box-firewall \
/etc/systemd/system/claudebox-firewall.service /usr/local/sbin/claudebox-firewall
sudo systemctl daemon-reload
# Firewall crumbs — UFW rules mentioning either network (numbers shift after
# each delete, so re-scan and remove the first match until none remain)
if command -v ufw >/dev/null && sudo ufw status 2>/dev/null | grep -q "Status: active"; then
for net in boxnet claudenet; do
while sudo ufw status numbered | grep -q "on $net"; do
n="$(sudo ufw status numbered | grep -m1 "on $net" | sed -E 's/^\[ *([0-9]+)\].*/\1/')"
sudo ufw --force delete "$n"
done
done
fi
sudo nft delete table inet box 2>/dev/null || true
sudo nft delete table bridge box 2>/dev/null || true
sudo nft delete table inet claudebox 2>/dev/null || true # legacy
sudo nft delete table bridge claudebox 2>/dev/null || true # legacy
if command -v docker >/dev/null; then
for net in boxnet claudenet; do
sudo iptables -D DOCKER-USER -i "$net" -j ACCEPT 2>/dev/null || true
sudo iptables -D DOCKER-USER -o "$net" -j ACCEPT 2>/dev/null || true
done
fi
if $purge; then
remaining="$(incus list -f csv 2>/dev/null | wc -l)"
if [ "$remaining" -gt 0 ]; then
echo "NOTE: $remaining non-box instance(s) remain on this host — leaving Incus installed."
else
sudo apt-get purge -y incus
sudo apt-get autoremove -y
fi
fi
echo "Teardown complete. (Your ~/.local/bin/box symlink and ~/.local/share/claudebox remain — remove by hand if wanted.)"