Ilia Denisov
c8601c0115
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CI / deploy (pull_request) Successful in 1m39s
Two prod-deploy hardening measures (owner-requested): - Swap file (Ansible common role, swap_size=1G, vm.swappiness=10). The per-container memory caps enforce that one service can't eat all RAM, but they overcommit the 1.9 GiB main host (~2.8 GiB of caps), so a simultaneous spike could hit the kernel OOM-killer (and it might pick postgres). A small swap absorbs the overshoot. Idempotent, builtin-only (no ansible.posix). - Edge maintenance page. prod-deploy.sh raises a flag around the rolling swap / migration window that the caddy edge serves a static 503 "технические работы" page from (deploy/caddy/maintenance.html), for the user-facing routes only — /_gm (Grafana) stays reachable. Cleared on any exit (success, health failure + rollback, or error) by a shell trap so it can never stick on. The 503 carries Retry-After + an X-Scrabble-Maintenance marker so a follow-up SPA overlay can tell a planned window apart from a transient error (the static page only catches a fresh load; an in-session user needs the app-side overlay). Not zero-downtime — the single stateful backend still blips — but the window is graceful instead of raw 502s. Verified: caddy validate; the gate 503s every non-/_gm path incl. the Connect/gRPC edge and serves the page + markers; /_gm bypasses; toggling needs no reload (per-request stat). Ansible --syntax-check + compose config (base+prod) pass.
45 lines
1.8 KiB
HTML
45 lines
1.8 KiB
HTML
<!doctype html>
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<!--
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Served with 503 by the edge caddy while the deploy holds the maintenance flag
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(/srv/maint/on, toggled by deploy/prod-deploy.sh around a rolling swap). Static and
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self-contained (no upstream, no external assets) so it renders while the backend /
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gateway are mid-recreate.
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-->
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<html lang="ru">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<meta name="robots" content="noindex">
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<title>Эрудит — технические работы</title>
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<style>
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:root { color-scheme: light dark; }
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html, body { height: 100%; margin: 0; }
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body {
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display: flex; align-items: center; justify-content: center;
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font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
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background: #f4f1ea; color: #2b2b2b;
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padding: 24px; box-sizing: border-box;
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}
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@media (prefers-color-scheme: dark) { body { background: #1d1b17; color: #e8e4da; } }
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.card { max-width: 30rem; text-align: center; line-height: 1.5; }
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.tile {
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display: inline-block; width: 3.5rem; height: 3.5rem; line-height: 3.5rem;
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font-size: 2rem; font-weight: 700; border-radius: 10px;
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background: #d9b451; color: #2b2b2b; box-shadow: 0 2px 4px rgba(0,0,0,.25);
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margin-bottom: 1.25rem;
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}
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h1 { font-size: 1.4rem; margin: 0 0 .5rem; }
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p { margin: .35rem 0; }
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.en { opacity: .7; font-size: .95rem; }
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</style>
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</head>
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<body>
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<main class="card">
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<div class="tile">Э</div>
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<h1>Технические работы</h1>
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<p>Идёт короткое обновление игры. Мы скоро вернёмся — обновите страницу через пару минут.</p>
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<p class="en">Scrabble is briefly down for an update. Please refresh in a couple of minutes.</p>
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</main>
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</body>
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</html>
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