furtka-gateway/examples/starter-stack/ops/host-sysctls.sh
Robert Syrnicki e240f071d5
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feat: ship control-plane standalone, bring your own Traefik/wg-easy
Restructure the deployment model: instead of bundling and owning its own
Traefik + wg-easy, the control-plane now plugs into a Traefik and wg-easy
the operator already runs (as sibling containers, or otherwise reachable).
This avoids duplicating infra self-hosters commonly already have, and
sidesteps having to run a second ACME/DNS setup entirely — the operator's
own Traefik already has a working cert resolver.

- New control_plane/wgeasy_v15.py: a wg-easy v15 REST client, verified live
  against a real running container (auth model, route shapes, and the new
  per-client PresharedKey all differ materially from v14's API). Threaded
  the preshared key through to the box side (furtka/wireguard.py in the
  furtka repo) so v15's handshake actually completes.
- GATEWAY_CERT_RESOLVER is now a real env var instead of a GATEWAY_MODE-
  derived hardcoded "le", so it can mirror whatever resolver name (if any)
  the operator's own Traefik already has configured.
- Root docker-compose.yaml/ops/deploy.sh: control-plane only now. deploy.sh
  asks how the operator's Traefik reaches it (same docker network, joined
  via `docker network connect`, or a separate host) instead of prompting
  for DNS-01 providers and port remaps single-parallel mode needed.
- single-parallel mode is retired outright — nothing needs it once
  furtka-gateway doesn't own a second Traefik/wg-easy to remap ports for.
- The old bundled stack (own Traefik+wg-easy, HTTP-01) moves to
  examples/starter-stack/ as the documented zero-infra on-ramp.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01R3jVwAqESRjPdW9P9nvfem
2026-09-19 13:34:29 +02:00

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#!/usr/bin/env bash
# Set the two kernel sysctls wg-easy needs, directly on the VPS host.
#
# Why this can't just be docker-compose.yaml's `sysctls:` key: that key
# sets namespaced (per-network-namespace) sysctls inside a container's own
# network namespace. wg-easy runs with network_mode: host (see the comment
# on that service), which means it has no network namespace of its own —
# runc flatly refuses to start the container if `sysctls:` is set at all
# under host networking ("not allowed in host network namespace"),
# confirmed by actually trying it, not assumed. These have to be host-level
# settings instead.
#
# Run this once on the VPS, before `docker compose up -d`.
set -euo pipefail
if [[ $EUID -ne 0 ]]; then
echo "must be run as root" >&2
exit 1
fi
CONF_FILE=/etc/sysctl.d/99-furtka-gateway.conf
cat > "$CONF_FILE" <<'EOF'
# Required by furtka-gateway's wg-easy service (network_mode: host) — see
# docker-compose.yaml and ops/host-sysctls.sh.
net.ipv4.ip_forward=1
net.ipv4.conf.all.src_valid_mark=1
EOF
sysctl --system >/dev/null
echo "Applied and persisted (via $CONF_FILE):"
sysctl net.ipv4.ip_forward net.ipv4.conf.all.src_valid_mark