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fix(webinstaller): delay reboot so the rebooting page can fetch CSS

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The reboot route fired systemctl reboot in parallel with returning
the rebooting HTML. The browser's follow-up request for /static/style.css
was racing the shutdown — often the server was already gone, leaving
the page unstyled (inline SVG rendered at full viewBox size, filling
the screen). A small sleep gives the browser time to pull CSS + icons
before the network drops.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Daniel Maksymilian Syrnicki 2026-04-15 09:24:05 +02:00
parent 1d145f7f0c
commit 8b00873da2
1 changed files with 4 additions and 1 deletions
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5
webinstaller/app.py
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@ -632,8 +632,11 @@ def install_reboot():
log = INSTALL_LOG.read_text() if INSTALL_LOG.exists() else ""
if parse_install_progress(log)["status"] != "done":
return redirect(url_for("install_log_view"))
# Delay reboot a few seconds so the browser can finish fetching CSS / assets
# for the rebooting page before the Flask server (and network) go away.
# Without this, the reboot page renders unstyled (giant inline SVG icon).
subprocess.Popen(
["/usr/bin/systemctl", "reboot"],
["/bin/sh", "-c", "sleep 3 && /usr/bin/systemctl reboot"],
start_new_session=True,
)
return render_template("install/rebooting.html")