# 118 — `elementsynapse`

Matrix homeserver (Synapse). Backs `@dtoro:avispero` and `@claudio:avispero`.

## At a glance
- **Hostname:** `elementsynapse`
- **IP:** `192.168.8.239`
- **Privilege:** **unprivileged**
- **Resources:** 1 core / 2 GiB RAM / 8 GiB rootfs
- **Mounts:** none from `/mnt/library`
- **Public hostname:** [`matrix.hubris.network`](../infrastructure/dns.md) → [caddy](121-caddy.md) → `:8008`
- **`server_name`:** `avispero` (intentionally different from the public URL).

## Service / port map

| Service        | Listen  | Notes                            |
| -------------- | ------- | -------------------------------- |
| synapse        | `:8008` | Matrix client-server / federation HTTP. Caddy terminates TLS for `matrix.hubris.network`. |

## Known issues
- Disk usage was 86.8% at last claudio-monitor reading on 2026-04-21 — the Matrix DB grows steadily. Watch or grow rootfs.

## Related
- [claudio-bot (123)](123-claudio-bot.md) — connects directly to `192.168.8.239:8008` (avoids hairpin-NAT TLS issue on the public URL)
- [Caddy](121-caddy.md)
- [DNS](../infrastructure/dns.md)
- [Monitoring](../infrastructure/monitoring.md)

## Changelog

### 2026-04-28 — wiki entry created
Initial documentation.