CentOS - Oct 2018 - What are the differences between systemd and non-systemd Linux distros?

Systemd is implemented in all the major distros, if you want to find ones that
don't search for non-systemd.


Leroy Tennison
Network Information/Cyber Security Specialist
E: leroy at datavoiceint.com
2220 Bush Dr
McKinney, Texas
75070
www.datavoiceint.com
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________________________________________
From: CentOS <centos-bounces at centos.org> on behalf of Robert Moskowitz
<rgm at htt-consult.com>
Sent: Tuesday, October 16, 2018 5:14 AM
To: CentOS mailing list; Turritopsis Dohrnii Teo En Ming
Subject: [EXTERNAL] Re: [CentOS] What are the differences between systemd and
non-systemd Linux distros?

On 10/16/18 1:54 AM, Turritopsis Dohrnii Teo En Ming
wrote:
> Good afternoon from Singapore,
>
> What are the differences between systemd and non-systemd Linux distros?
>
> Is systemd implemented in all the latest Linux distros?
>
> Please advise. Thank you.
>
>
My advice is to go and read up on the original design goals of systemd.
The information is out there.  We had this discussion here years ago
when we were staring and the impending transition.

Read the archives on the angst the change engendered and the adjustment
to the new methodology.

They say that the Internet never forgets, so you should be able to find
the original discussions and make your own judgment call.


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On 10/16/18 7:51 AM, Leroy Tennison wrote:
> Systemd is implemented in all the major distros, if you want to find ones
that don't search for non-systemd.
> 
Hoping to not offend proponents of systemd/firewalld...

Linux kernel is already containing chunks of code related to 
systemd/firewalld and friends. One can disable stuff during kernel 
build, but the result it still is not like the result of building kernel 
before the existence of systemd/firewalld. Also, it is likely that at 
some point systemd-free Linux distribution(s) may fade away.

That said, if one is strongly willing to stay away from systemd, and not 
to such extent into Linux as to needing an advise on that, I would 
recommend to take a look at non-Linux system, specifically BSD 
descendants (FreeBSD, NetBSD, etc). Their kernel is not as heavy 
(big,resource demanding) as Linux kernel, and you can do pretty much 
everything one needs (except maybe computer games, although these will 
fall mostly into MS Windows scope). I for one have FreeBSD on my laptop 
(with alternative boot into Debian, the last being systemd though...).

I hope, this helps.

Valeri
> 
> Leroy Tennison
> Network Information/Cyber Security Specialist
> E: leroy at datavoiceint.com
> 2220 Bush Dr
> McKinney, Texas
> 75070
> www.datavoiceint.com
> TThis message has been sent on behalf
> of a company that is part of the Harris Operating Group of
> Constellation Software Inc. These companies are listed
> here
> .
> If you prefer not to be contacted by Harris
> Operating Group
> please notify us
> .
> This message is intended exclusively for the
> individual or entity to which it is addressed. This communication
> may contain information that is proprietary, privileged or
> confidential or otherwise legally exempt from disclosure. If you are
> not the named addressee, you are not authorized to read, print,
> retain, copy or disseminate this message or any part of it. If you
> have received this message in error, please notify the sender
> immediately by e-mail and delete all copies of the
> message.
> 
> ________________________________________
> From: CentOS <centos-bounces at centos.org> on behalf of Robert
Moskowitz <rgm at htt-consult.com>
> Sent: Tuesday, October 16, 2018 5:14 AM
> To: CentOS mailing list; Turritopsis Dohrnii Teo En Ming
> Subject: [EXTERNAL] Re: [CentOS] What are the differences between systemd
and non-systemd Linux distros?
> 
> On 10/16/18 1:54 AM, Turritopsis Dohrnii Teo En Ming wrote:
>> Good afternoon from Singapore,
>>
>> What are the differences between systemd and non-systemd Linux distros?
>>
>> Is systemd implemented in all the latest Linux distros?
>>
>> Please advise. Thank you.
>>
>>
> 
> My advice is to go and read up on the original design goals of systemd.
> The information is out there.  We had this discussion here years ago
> when we were staring and the impending transition.
> 
> Read the archives on the angst the change engendered and the adjustment
> to the new methodology.
> 
> They say that the Internet never forgets, so you should be able to find
> the original discussions and make your own judgment call.
> 
> 
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> https://lists.centos.org/mailman/listinfo/centos
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> https://lists.centos.org/mailman/listinfo/centos
> 
-- 
++++++++++++++++++++++++++++++++++++++++
Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247
++++++++++++++++++++++++++++++++++++++++

On Tue, Oct 16, 2018 at 09:25:15AM -0500, Valeri Galtsev
wrote:
> Hoping to not offend proponents of systemd/firewalld...
Perhaps if you weren't spreading misinformation, we wouldn't be
offended? 
> Linux kernel is already containing chunks of code related to
> systemd/firewalld and friends. One can disable stuff during kernel build,
> but the result it still is not like the result of building kernel before
the
> existence of systemd/firewalld.
None of this is true.  It's true that systemd uses some Linux-only
features like cgroups, but I was using those features well before
systemd came around.  And firewalld uses Linux only specific features
too -- it manages the NETFILTER rules which is a linux-specific
project.  The only thing that seems to be in common is that they are
both projects that end with 'd'.  I suppose you're going to start
claiming that SSHd, HTTPd and NTPd are up to no good.
> Also, it is likely that at some point
> systemd-free Linux distribution(s) may fade away.
There was already a move away from SysV init before systemd was
introduced, heck RHEL6/CentOS6 used Upstart instead of SysV.  There
are always going to be projects with a diverse set of tools, it just
depends on how many people care about it.  Turns out, not that many
people care about maintaining a SysV init (or other init) distro.  

-- 
Jonathan Billings <billings at negate.org>

On 17/10/18 1:25 am, Valeri Galtsev wrote:
> That said, if one is strongly willing to stay away from systemd, and 
> not to such extent into Linux as to needing an advise on that, I would 
> recommend to take a look at non-Linux system, specifically BSD 
> descendants (FreeBSD, NetBSD, etc). Their kernel is not as heavy 
> (big,resource demanding) as Linux kernel, and you can do pretty much 
> everything one needs (except maybe computer games, although these will 
> fall mostly into MS Windows scope). I for one have FreeBSD on my 
> laptop (with alternative boot into Debian, the last being systemd 
> though...).
It's starting to look as though the BSD camp may embrace systemd sooner 
rather than later:

https://youtu.be/6AeWu1fZ7bY?t=1537 - I like this bit the most in that 
video!

But do watch the entire presentation - good stuff.