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docs: record WordPress decision (2-4 sites, ecommerce-capable, Emby dropped)

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Emby traded off for WordPress capacity rather than run alongside it —
still fully built and ready in services/emby.sh, just not part of the
current baseline. Updates the final RAM budget table to swap Emby for
the shared MariaDB + WordPress sites, and notes wg-easy/homebox/
audiobookshelf aren't included in that specific table since they
weren't part of the baseline as most recently stated.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TBtExJcqxnokyZZKmphdug
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Claude
2026-08-09 21:16:00 +00:00
parent a26d1831ee
commit e96a257d8f
1 changed files with 32 additions and 10 deletions
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docs/vps-sizing-recommendations.md
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@@ -133,6 +133,23 @@ a purpose-built one — it lacks LMS's music-specific depth (its lyrics
fetching, its many audio-focused plugins). Since there's no hardware
Squeezebox tie-in to preserve, that tradeoff was fine to make.
**Emby subsequently dropped from the near-term plan** — traded off for
WordPress capacity (below) rather than run alongside it. `services/emby.sh`'s
music-only mode is still there and ready whenever there's headroom for it
again; it just isn't part of the current baseline.
**WordPress — confirmed, 2-4 sites, light traffic, ecommerce-capable.**
`services/wordpress.sh` (new): multi-site from the start, every site named,
one shared MariaDB container instead of a dedicated database container per
site (same resource-sharing idea as `coturn`, scoped to WordPress's own
sites). Each site gets its own database + user within that shared
instance — required, not just tidy: WordPress's schema uses generic table
names (`wp_posts`, `wp_options`, etc.), so two installs sharing one database
with the same table prefix would collide. wp-cli automates the initial
install (title, admin account) so there's no per-site browser setup wizard,
and PHP limits are pre-tuned (256M memory, 64M uploads) for WooCommerce
specifically since "possible ecommerce" was part of the ask.
**Explicitly out of scope for this box** (wrong fit, not "can't run"):
- Local media servers storing media on the VPS (`jellyfin`, `immich`,
`lyrion`, and `emby`/`audiobookshelf` *without* the home-library-over-VPN
@@ -152,7 +169,7 @@ Squeezebox tie-in to preserve, that tradeoff was fine to make.
(CGNAT, no local peer) boxes — a good idea in principle, parked for later
since NetBird already covers the current need.
## Final RAM budget for the IONOS box (everything above, idle)
## Final RAM budget for the IONOS box (current baseline, no Emby, idle)
| Service | ~RAM |
|---|---|
@@ -164,17 +181,22 @@ Squeezebox tie-in to preserve, that tradeoff was fine to make.
| Mattermost × 2 (app+Postgres each) | ~1200MB |
| Traccar (JVM) | ~425MB |
| NetBird client | ~35MB |
| ntfy, wg-easy, homebox, actualbudget, mealie | ~490MB combined |
| audiobookshelf | ~200MB |
| Emby (music-only) | ~300MB |
| **Total** | **~3.37GB** |
| ntfy, actualbudget, mealie | ~340MB combined |
| Shared MariaDB (WordPress, one-time) | ~180MB |
| WordPress × 4 sites (~120MB each — sized for possible WooCommerce, not a light blog) | ~480MB |
| **Total** | **~3.38GB** |
Leaves roughly **~600-700MB headroom (~16-18%)** out of 4GB — tighter than
the 25-30% rule of thumb above, but with the swapfile now automatic
Leaves roughly **~700MB headroom (~17%)** out of 4GB — tighter than the
25-30% rule of thumb above, but with the swapfile now automatic
(`ensure_swapfile`, see above) there's real insurance against burst load
rather than relying on manual setup. Deploy incrementally and check
`free -h` / `docker stats` against this table rather than trusting it
blindly — each line carries real estimate uncertainty, and they're stacked
rather than relying on manual setup. At the low end of the site range (2
instead of 4), headroom improves to roughly ~950MB (~23%). `wg-easy`,
`homebox`, and `audiobookshelf` from earlier in this doc aren't included in
this specific table — add them back in at ~25MB, ~125MB, and ~200MB
respectively if/when they're actually deployed alongside this baseline.
Deploy incrementally and check `free -h` / `docker stats` against this table
rather than trusting it blindly — each line carries real estimate
uncertainty, and they're stacked
close enough to the ceiling that it's worth confirming. If real usage runs
higher than estimated, the two Mattermost instances (~1.2GB combined) are
the single biggest lever to reconsider.