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webui: add support bundle to Backup & Support

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Rename the Maintenance > Backup & Restore page to Backup & Support and
add a Support Bundle card.  Download support runs the on-device
`support collect` tool, which gathers configuration, logs, routing,
interfaces, hardware inventory, and container and service status into a
single archive; the WebUI runs as root so the collection is complete.

The handler buffers the archive and only commits response headers once
collection succeeds, so a mid-collection failure is a clean error rather
than a truncated download.  An optional password encrypts the bundle via
the tool's GPG support, fed on stdin so it never reaches the process
list.  Collection blocks for up to a minute with no output, so the write
deadline is extended past the server's 15s WriteTimeout and nginx gets a
matching read timeout; the browser shows a "collecting" state and saves
the blob client-side using the server's filename.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
This commit is contained in:
Joachim Wiberg
2026-06-15 19:45:23 +02:00
parent dc2d429093
commit 629f0aa74a
7 changed files with 174 additions and 2 deletions
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package/webui/webui.conf
+10
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@@ -45,6 +45,16 @@ location ~ ^/maintenance/logs/[^/]+/tail$ {
include /etc/nginx/webui-proxy.conf;
}
# Support bundle collection runs `support collect`, which emits nothing
# until it finishes (~50 s) and then sends the whole archive at once.
# The upstream is silent for that window, so the default 60 s
# proxy_read_timeout would 504 just as the bundle is ready. Buffering
# stays on — it's a plain file download, not a stream.
location = /maintenance/support-bundle {
proxy_read_timeout 300s;
include /etc/nginx/webui-proxy.conf;
}
# Liveness probe — nginx-only, no upstream call. Used by the watchdog
# div in base.html and the reboot-overlay poller.
location = /device-status {