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infix/package
Joachim Wiberg b1146cbb31 webui: add Maintenance > Logs viewer
New Logs page under Maintenance presents the on-disk syslog files
(messages, syslog, kern, auth, routing, firewall, upgrade, debug,
container, mail) with a tab per source and an (empty) chip for files
with no content.

The buffer loads the last 250 lines and pins to the bottom on open and
on tab change, with keyboard focus on the pane so PageUp/PageDown work
immediately.  Load earlier pages back 250 lines at a time, preserving
the reader's scroll position as older lines fill in above; once the
current file is exhausted the button re-labels to "Load previous from
<rotation>" and walks back through rotated and gzipped archives.

Live tail streams new entries over SSE.  The server runs tail -F -n 0
and debounces output; the client follows the bottom unless the reader
has scrolled up.  A status pill shows connecting/live/disconnected.
nginx gets a no-buffering location for the tail stream, mirroring the
software progress endpoint.

Download returns the full archive — current file plus every rotated and
gzipped predecessor — concatenated chronologically.

Severity is coloured by a keyword heuristic since sysklogd writes no
<PRI> to disk; BSD-format lines are shown unconditionally.  Filter is
client-side substring or /regex/, focusable with Ctrl/Cmd-F.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2026-06-15 19:45:22 +02:00
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