The Android client ships OpenVPN 2.7, which refuses a --secret config
("Options error: No tls-client or tls-server option"; 2.8 drops it
entirely). Rework the phone instance to a CA-less TLS point-to-point:
two self-signed EC keypairs generated on ru-vps (server.* / client.*),
each side pins the other by SHA256 with peer-fingerprint, data-ciphers
AES-256-GCM. Everything else unchanged (tcp/9444, tun2, 10.80.0.0/30,
NAT via tun0, systemd unit, shared homelab_vpn_client_routes).
Verified on ru-vps 2026-09-03: openvpn 2.6.19 starts clean ("Using
certificate fingerprint to verify peer"), listens on 9444, tun2 up,
make openvpn-phone idempotent (changed=0 on rerun), make lint green.
The regenerated ansible/generated/ada-phone.ovpn (self-contained
cert+key, gitignored) was handed to the operator.
openvpn-laptop.yml is left on static key — not deployed; needs the same
TLS treatment when someone actually uses it.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KbuZrUoevfBgCpf5DCF4DG
playbooks/openvpn-phone.yml (make openvpn-phone) stands up a separate
point-to-point static-key instance on ru-vps: tcp/9444, tun2, 10.80.0.0/30,
homelab-openvpn-phone unit, NAT 10.80.0.0/30 -> LAN via tun0. The client
profile (with the secret) lands in ansible/generated/ada-phone.ovpn
(gitignored). Android client: "OpenVPN for Android" (Arne Schwabe) — the
official OpenVPN Connect does not support static-key configs.
- homelab_vpn_client_routes in group_vars/all/main.yml: shared surgical
route list for both road-warrior profiles; not the whole /24, since the
phone's home network is almost certainly 192.168.1.0/24 too
- openvpn-laptop.yml reuses that list instead of its own literal copy
- both playbooks: local profile write moved from `become: false` to
`vars: {ansible_connection: local, ansible_become: false}` — the keyword
did not suppress the inherited ansible_become on delegate_to: localhost
Deployed and verified on ru-vps 2026-09-03: service active, tun2 up, ufw
9444/tcp, NAT rule present, make openvpn-phone idempotent (changed=0 on
rerun), 192.168.1.30:8082 reachable from ru-vps. openvpn-laptop.yml is
still not applied on the live host.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KbuZrUoevfBgCpf5DCF4DG