Shared coturn (services/coturn.sh, ensure_coturn_user in lib/common.sh) is no
longer an installable or usable option anywhere in this repo. It's moved to
attic/coturn.sh (with tools/coturn-test-check.sh alongside it), which is
outside setup.sh's services/*.sh glob, so it never registers, never appears
in the menu, and `sudo ./setup.sh coturn` now fails with "unknown service".
Asterisk and Mattermost each already had an opt-out to run their own
dedicated coturn instead of the shared one; that opt-out is now the only
behavior — the shared-coturn preference, the opt-out prompt, and every
ensure_coturn_user() call site are gone. find_free_coturn_range()
(lib/common.sh) is what makes unconditional dedicated coturn safe: it scans
every coturn-owning service's own .env on the box for already-claimed relay
ranges and picks one that can't collide, so Asterisk + any number of
Mattermost instances can each run their own coturn on one box without the
relay-port collisions this repo's coturn history warns about.
Existing installs still pointed at a shared coturn container are left
running as-is on `update` (no silent migration attempt against a service
that no longer exists to heal against) — a full/fresh reinstall is the
migration path, which generates a new dedicated coturn with fresh
credentials and says so.
Also updates CLAUDE.md's coturn guidance for future service authors,
attic/README.md with the retirement rationale, and stale
services/coturn.sh path references in services/asterisk.sh,
tools/pstn-test-check.sh, README.md, and docs/vps-sizing-recommendations.md.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Crt4ymNEHEbWqscB1qvZgC
Claude
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