# Deploying the developer edition on Earth

Companion to `spec.md` §17.5. Status: **installed and running** since 2026-09-27 as the systemd service `oxygenhub` under the `oxygenhub` system user, data in `/home/oxygenhub/data`, HTTP on 7300 and HTTPS on 7343 with a self-signed certificate. `oxygen`, `oxygen-vscode` and `oxygenhub` are hosted under `andymccall/` and each checkout has an `earth` remote.

## The host

| | |

|---|---|

| Name | `earth` (`earth.andymccall.xyz`, IPv6 ULA; `192.168.1.6` on the LAN) |

| OS | Ubuntu 26.04.1 LTS, x86_64, 4 cores, 31 GiB RAM |

| Disk | `/` 251 GB (95 GB free), `/home` 1 TB (944 GB free) |

| Already running | sshd :22, a Python service :6400, `wren-nest` :7842, retroplay-manager in Docker (:8080, :6670) with Postgres and a tetriblox server, two GitHub Actions runners (`doomsdayonecom`), Docker, containerd |

| Not installed | Rust toolchain, sqlite3 CLI, nginx or caddy, certbot |

| Access | `ssh -i ~/.ssh/earth_claude claude@earth`; `claude` has passwordless sudo |

Ports 7300 (HTTP) and 7343 (HTTPS) are free and are the hub's.

## Steps

1. **Toolchain** (as `claude`): `curl https://sh.rustup.rs -sSf | sh -s -- -y --profile minimal`, then `sudo apt-get install -y build-essential pkg-config git`.

2. **Source**: from the development machine, `rsync -a --delete --exclude target --exclude node_modules ~/development/oxygen ~/development/oxygenhub claude@earth:~/src/`. Oxygen is never pushed to Git; rsync is the bootstrap, and after the hub runs, `oxy push` to the hub itself is the ongoing path.

3. **Build**: `cd ~/src/oxygenhub && cargo build --release`.

4. **System user and data**: `sudo useradd --system --home /home/oxygenhub --create-home oxygenhub`, `sudo install -o oxygenhub -g oxygenhub -m 0755 target/release/oxygenhub /usr/local/bin/`, `sudo -u oxygenhub oxygenhub init --data /home/oxygenhub/data --admin andymccall` (prints the first admin's one-time password).

5. **Service**: `/etc/systemd/system/oxygenhub.service` running `oxygenhub serve --data /home/oxygenhub/data` as `oxygenhub`, `Restart=on-failure`, `ProtectSystem=strict`, `ReadWritePaths=/home/oxygenhub/data`, `NoNewPrivileges=yes`; `sudo systemctl enable --now oxygenhub`.

6. **TLS**: the developer edition generates a self-signed certificate at `init`. Download the certificate from `https://earth.andymccall.xyz:7343/.well-known/oxyhub-ca.pem` (or over plain HTTP on port 7300) and point clients at it with `oxy config remote.<name>.ca <file>` or `OXY_CA`.

7. **First repositories**: on the development machine, `oxy remote add earth https://earth.andymccall.xyz:7343/andymccall/oxygen` in each of `oxygen`, `oxygen-vscode`, `oxygenhub`, then `oxy push earth`.

8. **Updates**: rsync, build, `sudo install`, `sudo systemctl restart oxygenhub`. `make deploy` in the hub wraps steps 2, 3 and 8.

## Where things are on Earth

| | |

|---|---|

| Binaries | `/usr/local/bin/oxygenhub`, `/usr/local/bin/oxy` |

| Sources | `/home/claude/src/oxygen`, `/home/claude/src/oxygenhub` (rsync targets; the hub itself is the canonical remote) |

| Data | `/home/oxygenhub/data` (`hub.toml`, `hub.db`, `keys/`, `repos/andymccall/*`) |

| Push token | `/home/oxygenhub/push-token` (also in `hub.toml`); each local checkout has it as `remote.earth.token` |

| Certificate | `/home/oxygenhub/data/keys/tls.crt`, served at `/.well-known/oxyhub-ca.pem`; local copy `~/.config/oxy/earth-ca.pem` set as `remote.earth.ca` |

| Service | `sudo systemctl status oxygenhub`, `sudo journalctl -u oxygenhub` |

## HTTPS only (oxygenhub#218)

When `base_url` is `https://…`, the hub takes nothing over plain http

through a proxy: a request that `X-Forwarded-Proto` (or Cloudflare's

`CF-Visitor`) reports as http is redirected to the same path on

`base_url` (GET and HEAD) or refused with 400 (anything else), and every

cookie it sets is `Secure`. Requests made to the hub directly, such as a

runner on the same host using `http://127.0.0.1:7300`, carry no such

header and are served as before. In front, Cloudflare's Always Use HTTPS

is on (2026-10-15). Strict-Transport-Security is not sent yet: it waits

for the security headers (#222) and the site owner's decision, because

browsers remember it for months.

## Outbound requests (oxygenhub#219)

Webhooks and AI assistants call addresses people give, so the hub only

calls **public** addresses: it resolves the host, refuses if any address

it resolves to is loopback, private, shared (CGNAT), link-local (the

cloud metadata address among them), multicast or an IPv6 local range,

pins the connection to the addresses it checked, and follows no

redirects. A refused webhook delivery records "not sent: …" with the

reason; an assistant says why it cannot be reached. To use a service on

your own network on purpose (a local Ollama), a site administrator lists

it in `hub.toml`:

```toml

[outbound]

allow = ["http://127.0.0.1:11434"]   # scheme://host (any port) or scheme://host:port

```