[CentOS] Cemtos 7 : Systemd alternatives ?

Tue Jul 8 17:36:56 UTC 2014
Dennis Jacobfeuerborn <dennisml at conversis.de>

On 08.07.2014 15:53, Ned Slider wrote:
> On 08/07/14 14:14, Dennis Jacobfeuerborn wrote:
>> On 08.07.2014 14:58, Adrian Sevcenco wrote:
>>> On 07/08/2014 04:22 AM, Always Learning wrote:
>>>>
>>>> On Mon, 2014-07-07 at 20:46 -0400, Robert Moskowitz wrote:
>>>>
>>>>> On 07/07/2014 07:47 PM, Always Learning wrote:
>>>>>> Reading about systemd, it seems it is not well liked and reminiscent of
>>>>>> Microsoft's "put everything into the Windows Registry" (Win 95 onwards).
>>>>>>
>>>>>> Is there a practical alternative to omnipresent, or invasive, systemd ?
>>>>
>>>>> So you are following the thread on the Fedora list?  I have been 
>>>>> ignoring it.
>>>>
>>>> No. I read some of
>>>> http://www.phoronix.com/scan.php?page=news_topic&q=systemd
>>>>
>>>> The systemd proponent, advocate and chief developer? wants to
>>>> abolish /etc and /var in favour of having the /etc and /var data
>>>> in /usr.
>>> err.. what? even on that wild fedora thread this did not come up!!!
>>>
>>> i will presume that you understood well your information source and you
>>> are actually know what you are referring to ... so, could you elaborate
>>> more about this?(with some references)
>>> i use systemd for some time (and i keep myslef informed about it) and i
>>> would need to know in time about this kind of change..
>>
>> There are no plans to "abolish" /etc and /var.
>>
>> The idea is that rather than say proftpd shipping a default config file
>> /etc/proftpd.conf that you then have to edit for you needs instead it
>> will ship the default config somewhere in /usr and let the config in
>> /etc override the one in /usr. That way if you want to "factory reset"
>> the system you can basically clear out /etc and you are back do the
>> defaults. The same applies to /var.
>> The idea is that /etc and /var become "site-local" directories that only
>> contain the config you actually changed from the defaults for this system.
>>
>> Since you already have experience with systemd you are already familiar
>> with this system where it stores its unit files in /usr/lib/systemd and
>> if you want to change some of them you copy them to /etc/systemd and
>> change them there. Same principle.
>>
>> /etc and /var will stay as valid as ever though and are not being
>> "abolished".
>>
> 
> That's not always true.
> 
> Some configs that were under /etc on el6 must now reside under /usr on el7.
> 
> Take modprobe blacklists for example.
> 
> On el5 and el6 they are in /etc/modprobe.d/
> 
> On el7 they need to be in /usr/lib/modprobe.d/
> 
> If you install modprobe blacklists to the old location under el7 they
> will not work.
> 
> I'm sure there are other examples, this is just one example I've
> happened to run into.

You might want to report this as a bug. The modprobe and modprobe.d man
pages explicitly reference "/etc/modprobe.d/*.conf" for the configuration.

Regards,
  Dennis