Hi!
There is a tool named monit (https://en.wikipedia.org/wiki/Monit) that can
check for changes to files; maybe give it a try. Like this (you’ll have to
adjust it):
check file bootid with path /proc/sys/kernel/random/boot_id
#if changed timestamp then alert
if content !=
"^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}"
then alert
if changed checksum then alert
group local
Kind regards,
Ulrich Windl
From: systemd-devel <systemd-devel-boun...@lists.freedesktop.org> On Behalf Of
Choi yenos
Sent: Tuesday, December 17, 2024 1:04 PM
To: systemd-devel@lists.freedesktop.org
Subject: [EXT] [systemd-devel] The periodic change in MACAddressPolicy in
ubuntu 2022
HI all, It seems that the MACAddressPolicy is periodically changing or being
updated on my Ubuntu 22.04 cluster.
When I create the 22.04 image, I set the file
/usr/lib/systemd/network/99-default.link to MACAddressPolicy=none and generate
the image.
However, after a certain period of time (24 hours?), the value changes back to
MACAddressPolicy=persistent. Strangely, even though the value has changed, the
date still points to 2022.
-rw-r--r-- 1 root root 499 Mar 11 2022 /usr/lib/systemd/network/99-default.link
Is there a specific systemd daemon that might be changing this value?
As a solution, I can set the �file with a higher priority, but I am curious
about why it is being changed.
----------------
[Match]
OriginalName=*
[Link]
NamePolicy=keep kernel database onboard slot path
AlternativeNamesPolicy=database onboard slot path
MACAddressPolicy=persistent
thank you.
