[Bug 2084376] Re: [Ubuntu 24.10 Oracular; systemd-sysctl service] File /etc/sysctl.conf is not processed

[fprietog]

I'm sorry but I don't understand your answer. I don't see the relevancy
of the origin or the contents of the /etc/sysctl.conf file; if that file
exists in the system it must be loaded. Otherwise, it's an error.

Apart from Ubuntu installers there are lot's of configuration scripts,
installers, applications, etc... that uses /etc/sysctl.conf as it's a
method stated in every linux manual or book in the world, or even in the
manual page for sysctl.conf shipped by default in Ubuntu. Using
etc/sysctl.d/*.conf snippets is an option but not mandatory.

Yes, you can place a .conf snippet to /etc/sysctl.d/. But it's not a
solution because this should be done every time the /etc/sysctl.conf
contents are modified by any means. It implies additional administration
work because you need to watch it's future changes to convert it... It's
better to just put a symlink and forget about it.

So, in my opinion, the bug here is not related to the contents or the
origin of /etc/sysctl.conf file. The bug is that systemd-sysctl version
255 effectively loaded /etc/sysctl.conf, as expected, but version 256
don't.

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https://bugs.launchpad.net/bugs/2084376

Title:
  [Ubuntu 24.10 Oracular; systemd-sysctl service] File /etc/sysctl.conf
  is not processed

Status in systemd package in Ubuntu:
  Incomplete

Bug description:
  Problem summary:
  ----------------
  After upgrading from Noble to Oracular the kernel parameters enclosed in the file /etc/sysctl.conf are not being loaded by systemd-sysctl service.

  The problem is that Oracular systemd package
  (systemd_256.5-2ubuntu3_amd64.deb) lacks the file
  /etc/sysctl.d/99-sysctl.conf that is a simlink to /etc/sysctl.conf, so
  that file is not processed at all.

  Previous Noble package (systemd_255.4-1ubuntu8.4_amd64.deb) contains
  that file (link) so it worked as expected.

  Aditional info:
  ---------------
  #lsb_release -rd
  Description:	Ubuntu 24.10
  Release:	24.10

  # apt-cache policy systemd
  systemd:
    Instalados: 256.5-2ubuntu3
    Candidato:  256.5-2ubuntu3
    Tabla de versión:
   *** 256.5-2ubuntu3 500
          500 http://archive.ubuntu.com/ubuntu oracular/main amd64 Packages
          100 /var/lib/dpkg/status

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