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fix(deploy): Fly.io requires POWDB_BIND=[::] (IPv6), not 0.0.0.0 #88

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Merged
zvndev merged 1 commit into from
Jun 10, 2026
Merged

fix(deploy): Fly.io requires POWDB_BIND=[::] (IPv6), not 0.0.0.0 #88

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2 changes: 1 addition & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -200,7 +200,7 @@ if (result.kind === "rows") console.table(result.rows);
| Variable | Default | Description |
|---|---|---|
| `POWDB_PORT` | `5433` | TCP port for the server |
| `POWDB_BIND` | `127.0.0.1` | Interface to bind; set `0.0.0.0` behind a platform proxy (Fly, Railway) |
| `POWDB_BIND` | `127.0.0.1` | Interface to bind; set `0.0.0.0` behind an IPv4 platform proxy (Railway, Docker, ECS). On **Fly.io** use `[::]` instead — its `.internal` network and `fly proxy` route over IPv6, so `0.0.0.0` makes the proxy reset the connection |
| `POWDB_DATA` | `./powdb_data` | Data directory (heap files, WAL, catalog, indexes) |
| `POWDB_PASSWORD` | *(none)* | Shared password required on connect when no named users are defined (set as env var) |
| `POWDB_ADMIN_USER` / `POWDB_ADMIN_PASSWORD` | *(none)* | Bootstrap an `admin` user on startup when both are set and that user does not yet exist (password never logged) |
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6 changes: 5 additions & 1 deletion examples/deploy/fly.toml
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Expand Up @@ -23,7 +23,11 @@ primary_region = "iad"
POWDB_DATA = "/data"
POWDB_PORT = "5433"
# Bind all interfaces — the server defaults to 127.0.0.1, which Fly's proxy can't reach.
POWDB_BIND = "0.0.0.0"
# MUST be "[::]" (dual-stack IPv6), NOT "0.0.0.0": Fly's private `.internal`
# network and `fly proxy` route over IPv6, so an IPv4-only bind makes the proxy
# fail with "handshake read error: Connection reset by peer". The server does
# `format!("{bind}:{port}")`, so "[::]" → "[::]:5433" and accepts both stacks.
POWDB_BIND = "[::]"
# Phase 1 hardening: refuse to start when a password is set without TLS.
# Leave OFF until you've mounted certs via secrets (POWDB_TLS_CERT /
# POWDB_TLS_KEY) or fronted the service with a TLS-terminating proxy.
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