Re: [CentOS] CentOS 8 Libvirt /qemu

[Günther J . Niederwimmer]

Hello,

Am Freitag, 18. Oktober 2019, 22:44:10 CEST schrieb Stephen John Smoogen:
> On Fri, 18 Oct 2019 at 16:31, Günther J. Niederwimmer  
wrote:
> > Hello,
> > 
> > can any install more then one KVM Client with UEFI ??
> > On my system it is not possible; I have total crash on the system, when I
> > install a client with UEFI
> 
> Could you give better details on what you mean here? There are
> multiple scenarios that you could be trying that meets that sentence,
> and some of them would be possible and others would not. Some
> scenarios will try to use the hardware UEFI to store variables and
> that will cause problems because the virtual systems will conflict
> when talking to the hostservers hardware (I think this would come up
> with certain secureboot scenarios but not sure). Basically could you
> walk out how you do this correctly on the hardware with EL7 and how
> you are doing this on EL8 (also what the hardware is?)
> 
> I am not sure otherwise I would have enough information to try and
> duplicate.

I have two identical server (SuperMicro) Ram CPU usw.

One is running CentOS 7  with KVM clients (5 Clients), all are installed with 
UEFI from github (repository https://www.kraxel.org/repos/jenkins)
[qemu-firmware-jenkins]
edk2.gitovmf

this is working perfect, I can also pass through my network cards (hardware) 
usw.

with CentOS 8 it is possible to install only ONE KVM Client with UEFI and pass 
through hardware. when i install a second KVM client the system crash?

When I make a Installation without UEFI the installation is working ??

It is also possible to install a minimal Install of KVM Client with UEFI but 
afterward when I add Hardware with virsh or virt-manger the client crash on 
startup.
 

-- 
mit freundlichen Grüßen / best regards

  Günther J. Niederwimmer


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[CentOS] CentOS 8 Docker container is missing dnf-plugin-ovl

[Richard Berger]

Hi everyone,

I've been running some tests on Travis CI with CentOS 7 and CentOS 8 based
Docker containers and having issues with the CentOS 8 ones.

With the centos:8 image, the RPM database eventually gets corrupted due to
the default overlay2 storage driver used by Docker.

This issue doesn't show with the centos:7 container. It already comes with
the "fastestmirror" and "ovl" plugins installed. The "ovl" plugin is a
workaround to avoid this corruption. See the bottom of
https://docs.docker.com/storage/storagedriver/overlayfs-driver/ for more
details.

Fedora 29 and 30 already have an equivalent "dnf-plugin-ovl" package (
https://src.fedoraproject.org/rpms/dnf-plugin-ovl). However, I couldn't
find it for RHEL8 or CentOS 8.

I can use the "touch" workaround for now. But are there plans to bring this
plugin to CentOS 8 and make it part of the CentOS 8 image, just like on
CentOS 7? Or is there some other way to achieve the same with dnf?

Thanks in advance,
Richard

-- 
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Research Associate Professor, Dept. of Chemistry, College of Science and
Technology
Temple University, Philadelphia PA 19122
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Re: [CentOS] mplayer or vlc?

[Gordon Messmer]

On 10/15/19 8:02 AM, Georgios wrote:

You can also use VLC through flatpak.



That's true, but there's not a good reason to use it if a proper package 
is available.  flatpak isn't so much a good packaging format as it is a 
way to keep applications that aren't well packaged isolated from the 
applications that are.


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Re: [CentOS] CentOS 8 Libvirt /qemu

[Stephen John Smoogen]

On Fri, 18 Oct 2019 at 16:31, Günther J. Niederwimmer  wrote:
>
> Hello,
>
> can any install more then one KVM Client with UEFI ??
> On my system it is not possible; I have total crash on the system, when I
> install a client with UEFI
>

Could you give better details on what you mean here? There are
multiple scenarios that you could be trying that meets that sentence,
and some of them would be possible and others would not. Some
scenarios will try to use the hardware UEFI to store variables and
that will cause problems because the virtual systems will conflict
when talking to the hostservers hardware (I think this would come up
with certain secureboot scenarios but not sure). Basically could you
walk out how you do this correctly on the hardware with EL7 and how
you are doing this on EL8 (also what the hardware is?)

I am not sure otherwise I would have enough information to try and duplicate.


> after Install one UEFI System, it is only possible to install a KVM client
> without UEFI this is working??
>
> I found so match broken things, so I mean the best situation is to go back to
> 7.7 :-(.
>
> Is in the near time a situation to found updates for centos 8?
> --
> mit freundlichen Grüßen / best regards
>
>   Günther J. Niederwimmer
>
>
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[CentOS] CentOS 8 Libvirt /qemu

[Günther J . Niederwimmer]

Hello,

can any install more then one KVM Client with UEFI ??
On my system it is not possible; I have total crash on the system, when I 
install a client with UEFI

after Install one UEFI System, it is only possible to install a KVM client 
without UEFI this is working??

I found so match broken things, so I mean the best situation is to go back to 
7.7 :-(. 

Is in the near time a situation to found updates for centos 8?
-- 
mit freundlichen Grüßen / best regards

  Günther J. Niederwimmer


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Re: [CentOS] Centos 8 Mate?

[Jonathan Billings]

On Fri, Oct 18, 2019 at 12:34:59PM -0400, Scott Robbins wrote:
> Mutt does work with gmail. Hrrm, I'm looking I see I do have the password
> used in my msmtprc file. If one just uses a very simple muttrc file file,
> it will also work but require the password.

Of course I'm aware that mutt an use IMAP and SMTP passwords.

So, there are hosted Gmail services, and you can turn on/off certain
settings.  One of the settings you can turn off is App Passwords
(which means you'd have to use your main password for IMAP/SMTP) and
it is considered a security risk to have IMAP/SMTP passwords enabled,
so I have it turned off.

Most high-level email clients let you set up authentication by using
Google's OAuth2 endpoint.  Mutt has some very minimal support for
this, but it requires creating your own custom google client IDs and
secrets, and I don't have access to the domain to do that.

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Re: [CentOS] Centos 8 Mate?

[Jonathan Billings]

On Fri, Oct 18, 2019 at 10:36:25AM -0500, Valeri Galtsev wrote:
> On 2019-10-18 10:27, Jonathan Billings wrote:
> > It's too bad that Mutt doesn't support GMail's authentication well
> And no, I don't use gmail anything, I know you are a wast majority who don't
> care, so, I'll not explain, and will stop right here.

Doesn't matter.  Work uses gmail (Google Apps for Education) and so I
literally have no choice.  

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Re: [CentOS] Centos 8 Mate?

[Scott Robbins]

On Fri, Oct 18, 2019 at 12:48:49PM -0500, Valeri Galtsev wrote:
> 
> 
> > to change meaning, I trim in an effort to make it easier for others to read
> > stuff.  So if it was me, feel free to chastize me either publicly or
> > privately
> 
> I will not: I did receive so many great advises from you, so I'm in such
> debt, I will never be able to re-pay. Only by trying to help others when I
> can following what you do.
> 
> Thanks a lot for everything!


And the above is my typical trimming. I'm glad that my feeble brain has
been able to help at times. :)


-- 
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Re: [CentOS] Centos 8 Mate?

[Valeri Galtsev]

On 2019-10-18 12:40, Scott Robbins wrote:

On Fri, Oct 18, 2019 at 11:42:22AM -0500, Valeri Galtsev wrote:




On Oct 18, 2019, at 11:34 AM, Scott Robbins  wrote:

On Fri, Oct 18, 2019 at 10:36:25AM -0500, Valeri Galtsev wrote:




On Fri, Oct 18, 2019 at 09:23:38AM -0500, Valeri Galtsev wrote:

And last but not least: I got used to some way of interaction with computer,
and that way is most productive for me after very long use. I don't want to
blend in iPad generation, I want to stay productive which I am. So, I use
Mutt (on FreeBSD, which my workstation runs, it is so easy and
straightforward to install and maintain Mutt).




Guys, I corrected myself: I meant Mate desktop above (related to somebody’s 
list of reasons why he needs Desktop environment - DE - he needs). However, 
someone’s creative editing threw away context, namely that what I said was 
related to DE descussion.


If I was the creative editor I most sincerely apologize. It wasn't my aim
to change meaning, I trim in an effort to make it easier for others to read
stuff.  So if it was me, feel free to chastize me either publicly or
privately


I will not: I did receive so many great advises from you, so I'm in such 
debt, I will never be able to re-pay. Only by trying to help others when 
I can following what you do.


Thanks a lot for everything!

Valeri

 and please accept my apologie.

Most sincerely, >


--

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Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
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Re: [CentOS] Centos 8 Mate?

[Scott Robbins]

On Fri, Oct 18, 2019 at 11:42:22AM -0500, Valeri Galtsev wrote:
> 
> 
> > On Oct 18, 2019, at 11:34 AM, Scott Robbins  wrote:
> > 
> > On Fri, Oct 18, 2019 at 10:36:25AM -0500, Valeri Galtsev wrote:
> >> 
> >> 
> >>> On Fri, Oct 18, 2019 at 09:23:38AM -0500, Valeri Galtsev wrote:
>  And last but not least: I got used to some way of interaction with 
>  computer,
>  and that way is most productive for me after very long use. I don't want 
>  to
>  blend in iPad generation, I want to stay productive which I am. So, I use
>  Mutt (on FreeBSD, which my workstation runs, it is so easy and
>  straightforward to install and maintain Mutt).
> > 
> 
> Guys, I corrected myself: I meant Mate desktop above (related to somebody’s 
> list of reasons why he needs Desktop environment - DE - he needs). However, 
> someone’s creative editing threw away context, namely that what I said was 
> related to DE descussion.

If I was the creative editor I most sincerely apologize. It wasn't my aim
to change meaning, I trim in an effort to make it easier for others to read
stuff.  So if it was me, feel free to chastize me either publicly or
privately and please accept my apologie.
Most sincerely,
-- 
Scott Robbins
PGP keyID EB3467D6
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Re: [CentOS] Centos 8 Mate?

[Valeri Galtsev]

> On Oct 18, 2019, at 11:34 AM, Scott Robbins  wrote:
> 
> On Fri, Oct 18, 2019 at 10:36:25AM -0500, Valeri Galtsev wrote:
>> 
>> 
>>> On Fri, Oct 18, 2019 at 09:23:38AM -0500, Valeri Galtsev wrote:
 And last but not least: I got used to some way of interaction with 
 computer,
 and that way is most productive for me after very long use. I don't want to
 blend in iPad generation, I want to stay productive which I am. So, I use
 Mutt (on FreeBSD, which my workstation runs, it is so easy and
 straightforward to install and maintain Mutt).
> 

Guys, I corrected myself: I meant Mate desktop above (related to somebody’s 
list of reasons why he needs Desktop environment - DE - he needs). However, 
someone’s creative editing threw away context, namely that what I said was 
related to DE descussion.

Thanks for hints about mutt which I use. Hints may be helpfult to those who use 
gmail, not me who doesn’t use google anything. I skip mentioning why, as you, 
vast majority do use google, and don’t care about the reasons why I don’t.

Valeri

> Another (these days neo) mutt lover. I'll take this time to spam my own
> http://srobb.net/mutt.html page.
> 
> Mutt does work with gmail. Hrrm, I'm looking I see I do have the password
> used in my msmtprc file. If one just uses a very simple muttrc file file,
> it will also work but require the password.  
> 
> set smtp_url="smtp://sc...@gmail.com@smtp.gmail.com:587"
> set smtp_pass="scottisawesome"
> set ssl_starttls=yes
> 
> I feel that everyone should use scottisawesome as their password though
> some foolish people disagree.  But (I am not 100% sure) it seems that those
> 3 lines were all I needed back when I did it that way (Nowadays I have a
> slightly more complex setup as I have too many email accounts like everyone
> else in the world).
> 
> -- 
> Scott Robbins
> PGP keyID EB3467D6
> ( 1B48 077D 66F6 9DB0 FDC2 A409 FA54 EB34 67D6 )
> gpg --keyserver pgp.mit.edu --recv-keys EB3467D6
> 
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Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247


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Re: [CentOS] Centos 8 Mate?

[Scott Robbins]

On Fri, Oct 18, 2019 at 10:36:25AM -0500, Valeri Galtsev wrote:
> 
> 
> > On Fri, Oct 18, 2019 at 09:23:38AM -0500, Valeri Galtsev wrote:
> > > And last but not least: I got used to some way of interaction with 
> > > computer,
> > > and that way is most productive for me after very long use. I don't want 
> > > to
> > > blend in iPad generation, I want to stay productive which I am. So, I use
> > > Mutt (on FreeBSD, which my workstation runs, it is so easy and
> > > straightforward to install and maintain Mutt).

Another (these days neo) mutt lover. I'll take this time to spam my own
http://srobb.net/mutt.html page.

Mutt does work with gmail. Hrrm, I'm looking I see I do have the password
used in my msmtprc file. If one just uses a very simple muttrc file file,
it will also work but require the password.  

set smtp_url="smtp://sc...@gmail.com@smtp.gmail.com:587"
set smtp_pass="scottisawesome"
set ssl_starttls=yes

I feel that everyone should use scottisawesome as their password though
some foolish people disagree.  But (I am not 100% sure) it seems that those
3 lines were all I needed back when I did it that way (Nowadays I have a
slightly more complex setup as I have too many email accounts like everyone
else in the world).

-- 
Scott Robbins
PGP keyID EB3467D6
( 1B48 077D 66F6 9DB0 FDC2 A409 FA54 EB34 67D6 )
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Re: [CentOS] Centos 8 Mate?

[Valeri Galtsev]

On 2019-10-18 10:27, Jonathan Billings wrote:

On Fri, Oct 18, 2019 at 09:23:38AM -0500, Valeri Galtsev wrote:

And last but not least: I got used to some way of interaction with computer,
and that way is most productive for me after very long use. I don't want to
blend in iPad generation, I want to stay productive which I am. So, I use
Mutt (on FreeBSD, which my workstation runs, it is so easy and
straightforward to install and maintain Mutt).


I corrected myself, I meant above: Mate (desktop). The Desktop 
Environment that is behaving and interacting with me the old fashioned 
way I became productive using since forever.




Nothing stopping you from using mutt on a CentOS system, regardless of
what desktop environment you use, just as email clients such as
Evolution and kmail can run in other desktop environments.

It's too bad that Mutt doesn't support GMail's authentication well
And no, I don't use gmail anything, I know you are a wast majority who 
don't care, so, I'll not explain, and will stop right here.


Valeri


(except by turning on the insecure password authentication, App
Passwords are disabled in my work email account).  You can kinda get
it working with the oauth2 support but it requires you set up an OAuth
client ID and client secret first, which I don't have access to for
work account.  I really like mutt and prefer it to webmail.



--

Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
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Phone: 773-702-4247

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Re: [CentOS] Centos 8 Mate?

[Jonathan Billings]

On Fri, Oct 18, 2019 at 09:23:38AM -0500, Valeri Galtsev wrote:
> And last but not least: I got used to some way of interaction with computer,
> and that way is most productive for me after very long use. I don't want to
> blend in iPad generation, I want to stay productive which I am. So, I use
> Mutt (on FreeBSD, which my workstation runs, it is so easy and
> straightforward to install and maintain Mutt).

Nothing stopping you from using mutt on a CentOS system, regardless of
what desktop environment you use, just as email clients such as
Evolution and kmail can run in other desktop environments.

It's too bad that Mutt doesn't support GMail's authentication well
(except by turning on the insecure password authentication, App
Passwords are disabled in my work email account).  You can kinda get
it working with the oauth2 support but it requires you set up an OAuth
client ID and client secret first, which I don't have access to for
work account.  I really like mutt and prefer it to webmail. 

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Re: [CentOS] Centos 8 Mate?

[Valeri Galtsev]

On 2019-10-18 09:23, Valeri Galtsev wrote:



On 2019-10-18 05:04, Ljubomir Ljubojevic wrote:

On 10/17/19 4:08 PM, Johnny Hughes wrote:

On 9/24/19 2:41 PM, Frank Cox wrote:
Without wanting to sound too pushy, I'm wondering if there is any 
update on the status of Mate now that Centos 8 has been released?


I would love to jump on C8 and start playing with it, but the lack 
of Mate is kind of  a showstopper for me at the moment.




Is gnome3 really that bad :D


Yes, it is.

My main reason is this (it has to do with me starting with Windows 3.1
and those functionalities are in Windows even today I have to use and
support at work):
1. All tray icons are visible so I can see if message or mail
comes without need to move more then eyeball.
2. I can put icon on a desktop, document or link to app.
3. I can easily see all open apps and swith to them using mouse
4. I can put links to panel in top/bottom of the screen, visible and
easily accessible.
5. I want easily visible and accessible multiple workspaces I can switch
to. I like separate opened apps several per workspace custered for a
specifig (simultanious) job/task, Firefox in one Krusader in another, VM
i third, something else in forth...Then I can switch between apps IN
THAT workspace, I do not have to choose from dozes of windows (like with
Alt+Tab)


And last but not least: I got used to some way of interaction with 
computer, and that way is most productive for me after very long use. I 
don't want to blend in iPad generation, I want to stay productive which 
I am. So, I use Mutt (on FreeBSD, which my workstation runs, it is so 
easy and straightforward to install and maintain Mutt).


Sorry, I meant Mate (mate-desktop); I do use mutt as text mail client as 
well...




Just my $0.02.

Valeri



If Gnome 3 (Classic) can be configured to do such things in one go
(chosing a theme "Gnome 2") I would switch to it.





I decided to just bite the bullet and shift to real gnome3 (and not the
classic) about 4 years ago.  It waas different and took some time to
learn .. BUT .. I can do everything I need to do now.

I like both mate and cinnamon .. so I am not knocking either one. I just
think people might be well server switching to a 'supported' desktop in
the longer run.

Again .. don't get me wrong .. it's open source, so do what makes you
happy :D


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Phone: 773-702-4247

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Re: [CentOS] Centos 8 Mate?

[Valeri Galtsev]

On 2019-10-18 05:04, Ljubomir Ljubojevic wrote:

On 10/17/19 4:08 PM, Johnny Hughes wrote:

On 9/24/19 2:41 PM, Frank Cox wrote:

Without wanting to sound too pushy, I'm wondering if there is any update on the 
status of Mate now that Centos 8 has been released?

I would love to jump on C8 and start playing with it, but the lack of Mate is 
kind of  a showstopper for me at the moment.



Is gnome3 really that bad :D


Yes, it is.

My main reason is this (it has to do with me starting with Windows 3.1
and those functionalities are in Windows even today I have to use and
support at work):
1. All tray icons are visible so I can see if message or mail
comes without need to move more then eyeball.
2. I can put icon on a desktop, document or link to app.
3. I can easily see all open apps and swith to them using mouse
4. I can put links to panel in top/bottom of the screen, visible and
easily accessible.
5. I want easily visible and accessible multiple workspaces I can switch
to. I like separate opened apps several per workspace custered for a
specifig (simultanious) job/task, Firefox in one Krusader in another, VM
i third, something else in forth...Then I can switch between apps IN
THAT workspace, I do not have to choose from dozes of windows (like with
Alt+Tab)


And last but not least: I got used to some way of interaction with 
computer, and that way is most productive for me after very long use. I 
don't want to blend in iPad generation, I want to stay productive which 
I am. So, I use Mutt (on FreeBSD, which my workstation runs, it is so 
easy and straightforward to install and maintain Mutt).


Just my $0.02.

Valeri



If Gnome 3 (Classic) can be configured to do such things in one go
(chosing a theme "Gnome 2") I would switch to it.





I decided to just bite the bullet and shift to real gnome3 (and not the
classic) about 4 years ago.  It waas different and took some time to
learn .. BUT .. I can do everything I need to do now.

I like both mate and cinnamon .. so I am not knocking either one. I just
think people might be well server switching to a 'supported' desktop in
the longer run.

Again .. don't get me wrong .. it's open source, so do what makes you
happy :D


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Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247

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Re: [CentOS] Centos 8 Mate?

[Nicolas Kovacs]

Le 18/10/2019 à 09:16, Alessandro Baggi a écrit :

Hi Niki,
why you choosed OpenSUSE Leap and not a distro like Fedora or Debian/Ubuntu?


Earlier this year, I wrote a detailed blog article about choosing an OS. 
No theory and no speculation, just hands-on personal experience:


https://www.microlinux.fr/choix-os/

Cheers,

Niki

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Mob. : 06 51 80 12 12
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Re: [CentOS] Top 7 Programming Languages That Employers Really Want

[Patrick Laimbock]

-Original message-
> From:Turritopsis Dohrnii Teo En Ming 
> Sent: Friday 18th October 2019 4:28
> To: J Martin Rushton via CentOS 
> Subject: [CentOS] Top 7 Programming Languages That Employers Really Want
[snip]

Your posting fails to follow the CentOS mailinglist policy [1], specifically:

Do not Cross Post - you also sent the same question to the Fedora mailinglist.
Stay on-topic - your question does not relate to CentOS (nor Fedora)
Netiquette - research *before* posting to the list. Your question is easily 
answered by searching Google.

Please follow the mailinglist policy and read 
http://www.catb.org/~esr/faqs/smart-questions.html before posting.

Thanks,
Patrick

[1] https://wiki.centos.org/GettingHelp/ListInfo/Policy
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Re: [CentOS] Top 7 Programming Languages That Employers Really Want

[Ray Burgess]

You should probably go write this in Python.

On Fri, Oct 18, 2019 at 3:01 AM Georgios  wrote:

> explanation to my comment.
> It depends where you live.
>
> On Fri, 2019-10-18 at 08:46 +0200, Georgios wrote:
> > Your sample isnt representative.
> >
> >
> > On Fri, 2019-10-18 at 10:28 +0800, Turritopsis Dohrnii Teo En Ming
> > wrote:
> > > Subject: Top 7 Programming Languages That Employers Really Want
> > >
> > > Good day from Singapore,
> > >
> > > Article: Top 7 Programming Languages That Employers Really Want
> > > Author: Nick Kolakowski
> > > Date Published: 14 October 2019
> > > Link:
> > >
> https://insights.dice.com/2019/10/14/7-programming-languages-employers-want/
> > >
> > > This is just a quick survey. May I know what programming languages
> > > do
> > > you know? I am considering being a programmer or developer.
> > > How long will it take for me to master a programming language like
> > > C++, Java, and Python?
> > >
> > > Thank you very much.
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > -BEGIN EMAIL SIGNATURE-
> > >
> > > The Gospel for all Targeted Individuals (TIs):
> > >
> > > [The New York Times] Microwave Weapons Are Prime Suspect in Ills of
> > > U.S. Embassy Workers
> > >
> > > Link:
> > >
> https://www.nytimes.com/2018/09/01/science/sonic-attack-cuba-microwave.html
> > >
> > > ***
> > > **
> > > ***
> > >
> > > Singaporean Mr. Turritopsis Dohrnii Teo En Ming's Academic
> > > Qualifications as at 14 Feb 2019 and refugee seeking attempts at
> > > the
> > > United Nations Refugee Agency Bangkok (21 Mar 2017) and in Taiwan
> > > (5
> > > Aug 2019):
> > >
> > > [1] https://tdtemcerts.wordpress.com/
> > >
> > > [2] https://tdtemcerts.blogspot.sg/
> > >
> > > [3] https://www.scribd.com/user/270125049/Teo-En-Ming
> > >
> > > -END EMAIL SIGNATURE-
> > > ___
> > > CentOS mailing list
> > > CentOS@centos.org
> > > https://lists.centos.org/mailman/listinfo/centos
> >
> > ___
> > CentOS mailing list
> > CentOS@centos.org
> > https://lists.centos.org/mailman/listinfo/centos
>
> ___
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>


-- 
Ray Burgess
Web Application Developer

[image: Real-Info.com] 
*Real Info, Inc.*
701 Seneca St, Suite 641
Buffalo, New York 14210
1-877-630-7028
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Re: [CentOS] What is /etc/subuid ?

[Leon Fauster via CentOS]

Am 09.10.19 um 22:39 schrieb Stephen John Smoogen:

On Wed, 9 Oct 2019 at 16:34, Valeri Galtsev  wrote:




On 2019-10-09 14:58, Jonathan Billings wrote:

On Wed, Oct 09, 2019 at 02:47:19PM -0500, Valeri Galtsev wrote:

Could someone enlighten me about the following file:

/etc/subuid

? This file appears to be owned by "setup" package. This is CentOS 7 system,
and until now these files if existed were never changed. Today I have added
user quite routine way, by doing

/usr/sbin/groupadd -g 4500 [username]
/usr/sbin/useradd -g [username] -u 4500 -c "User Name, email@domain"
[username]

And the file /etc/subuid changed and user was added into it:

[username]:10:65536


I'm not sure what else it's used for, but /etc/subuid and /etc/subgid
are used by podman for rootless containers (i.e. you can run a
container without any root permissions).  subuid/subgid is used to map
a range of UID/GIDs to the process namespace inside the kernel.

Some details here:

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux_atomic_host/7/html-single/managing_containers/index#set_up_for_rootless_containers

It's actually pretty cool.

So, now when accounts are created with useradd, subuids are assigned
to that new user.

Unfortunately, this doesn't really work in an enterprise environment
when users are defined via LDAP, since no subuid/subgid entries are
created, but I've heard that there's an effort to make that happen in
the NSS layer in the future.



Thank you, Michael and Jonathan for your answers.

I have one more question (which I probably will just answer myself by
kickstart installing fresh new system...):

Did something changed and now by default useradd command adds user in
that file (by default without me using extra flag etc)? In other words
is it just me or indeed the command we used since forever suddenly
changed its behavior?



I believe it is a new behavior (by about a year). This file was not in
earlier versions of RHEL because my systems only seem to have it
showing up after 2018-10



Seems C7 has no changelog entry but C8 gives:

$ rpm -q --changelog shadow-utils |grep -C 1 subo
* Mi Nov 26 2014 Tomáš Mráz  - 2:4.2.1-1
- new upstream release with support for subordinate uids and gids

--
Leon

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Re: [CentOS] Centos 8 Mate?

[Georgios]

you should give gnome3 some time.
Here is the thing.
At the beginning i disliked gnome3. I tried it for 1 or 2 days and then
i turned to xfce. 

I started using gnome3 when one of my friends said that it is usable if
you get use to it. I also considered the fact that desktop environments
like xfce have a small development team and they delay to transits to
new technologies.

I gave a try to gnome3 for a couple of weeks and it works fine.
I dont even considering changing back.


On Fri, 2019-10-18 at 12:04 +0200, Ljubomir Ljubojevic wrote:
> On 10/17/19 4:08 PM, Johnny Hughes wrote:
> > On 9/24/19 2:41 PM, Frank Cox wrote:
> > > Without wanting to sound too pushy, I'm wondering if there is any
> > > update on the status of Mate now that Centos 8 has been released?
> > > 
> > > I would love to jump on C8 and start playing with it, but the
> > > lack of Mate is kind of  a showstopper for me at the moment.
> > > 
> > 
> > Is gnome3 really that bad :D
> 
> Yes, it is.
> 
> My main reason is this (it has to do with me starting with Windows
> 3.1
> and those functionalities are in Windows even today I have to use and
> support at work):
> 1. All tray icons are visible so I can see if message or mail
> comes without need to move more then eyeball.
> 2. I can put icon on a desktop, document or link to app.
> 3. I can easily see all open apps and swith to them using mouse
> 4. I can put links to panel in top/bottom of the screen, visible and
> easily accessible.
> 5. I want easily visible and accessible multiple workspaces I can
> switch
> to. I like separate opened apps several per workspace custered for a
> specifig (simultanious) job/task, Firefox in one Krusader in another,
> VM
> i third, something else in forth...Then I can switch between apps IN
> THAT workspace, I do not have to choose from dozes of windows (like
> with
> Alt+Tab)
> 
> If Gnome 3 (Classic) can be configured to do such things in one go
> (chosing a theme "Gnome 2") I would switch to it.
> 
> 
> 
> > I decided to just bite the bullet and shift to real gnome3 (and not
> > the
> > classic) about 4 years ago.  It waas different and took some time
> > to
> > learn .. BUT .. I can do everything I need to do now.
> > 
> > I like both mate and cinnamon .. so I am not knocking either one. I
> > just
> > think people might be well server switching to a 'supported'
> > desktop in
> > the longer run.
> > 
> > Again .. don't get me wrong .. it's open source, so do what makes
> > you
> > happy :D
> > 
> > 
> > ___
> > CentOS mailing list
> > CentOS@centos.org
> > https://lists.centos.org/mailman/listinfo/centos
> > 
> 
> 

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Re: [CentOS] Centos 8 Mate?

[Ljubomir Ljubojevic]

On 10/17/19 4:08 PM, Johnny Hughes wrote:
> On 9/24/19 2:41 PM, Frank Cox wrote:
>> Without wanting to sound too pushy, I'm wondering if there is any update on 
>> the status of Mate now that Centos 8 has been released?
>>
>> I would love to jump on C8 and start playing with it, but the lack of Mate 
>> is kind of  a showstopper for me at the moment.
>>
> 
> Is gnome3 really that bad :D

Yes, it is.

My main reason is this (it has to do with me starting with Windows 3.1
and those functionalities are in Windows even today I have to use and
support at work):
1. All tray icons are visible so I can see if message or mail
comes without need to move more then eyeball.
2. I can put icon on a desktop, document or link to app.
3. I can easily see all open apps and swith to them using mouse
4. I can put links to panel in top/bottom of the screen, visible and
easily accessible.
5. I want easily visible and accessible multiple workspaces I can switch
to. I like separate opened apps several per workspace custered for a
specifig (simultanious) job/task, Firefox in one Krusader in another, VM
i third, something else in forth...Then I can switch between apps IN
THAT workspace, I do not have to choose from dozes of windows (like with
Alt+Tab)

If Gnome 3 (Classic) can be configured to do such things in one go
(chosing a theme "Gnome 2") I would switch to it.



> 
> I decided to just bite the bullet and shift to real gnome3 (and not the
> classic) about 4 years ago.  It waas different and took some time to
> learn .. BUT .. I can do everything I need to do now.
> 
> I like both mate and cinnamon .. so I am not knocking either one. I just
> think people might be well server switching to a 'supported' desktop in
> the longer run.
> 
> Again .. don't get me wrong .. it's open source, so do what makes you
> happy :D
> 
> 
> ___
> CentOS mailing list
> CentOS@centos.org
> https://lists.centos.org/mailman/listinfo/centos
> 


-- 
Ljubomir Ljubojevic
(Love is in the Air)
PL Computers
Serbia, Europe

StarOS, Mikrotik and CentOS/RHEL/Linux consultant
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Re: [CentOS] Centos 8 Mate?

[Alessandro Baggi]

On 17/10/19 22:24, Nicolas Kovacs wrote:

I decided to switch the desktop clients to OpenSUSE Leap KDE


Hi Niki,
why you choosed OpenSUSE Leap and not a distro like Fedora or Debian/Ubuntu?

Best regards.

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Re: [CentOS] Top 7 Programming Languages That Employers Really Want

[Georgios]

explanation to my comment.
It depends where you live.

On Fri, 2019-10-18 at 08:46 +0200, Georgios wrote:
> Your sample isnt representative.
> 
> 
> On Fri, 2019-10-18 at 10:28 +0800, Turritopsis Dohrnii Teo En Ming
> wrote:
> > Subject: Top 7 Programming Languages That Employers Really Want
> > 
> > Good day from Singapore,
> > 
> > Article: Top 7 Programming Languages That Employers Really Want
> > Author: Nick Kolakowski
> > Date Published: 14 October 2019
> > Link: 
> > https://insights.dice.com/2019/10/14/7-programming-languages-employers-want/
> > 
> > This is just a quick survey. May I know what programming languages
> > do
> > you know? I am considering being a programmer or developer.
> > How long will it take for me to master a programming language like
> > C++, Java, and Python?
> > 
> > Thank you very much.
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > -BEGIN EMAIL SIGNATURE-
> > 
> > The Gospel for all Targeted Individuals (TIs):
> > 
> > [The New York Times] Microwave Weapons Are Prime Suspect in Ills of
> > U.S. Embassy Workers
> > 
> > Link: 
> > https://www.nytimes.com/2018/09/01/science/sonic-attack-cuba-microwave.html
> > 
> > ***
> > **
> > ***
> > 
> > Singaporean Mr. Turritopsis Dohrnii Teo En Ming's Academic
> > Qualifications as at 14 Feb 2019 and refugee seeking attempts at
> > the
> > United Nations Refugee Agency Bangkok (21 Mar 2017) and in Taiwan
> > (5
> > Aug 2019):
> > 
> > [1] https://tdtemcerts.wordpress.com/
> > 
> > [2] https://tdtemcerts.blogspot.sg/
> > 
> > [3] https://www.scribd.com/user/270125049/Teo-En-Ming
> > 
> > -END EMAIL SIGNATURE-
> > ___
> > CentOS mailing list
> > CentOS@centos.org
> > https://lists.centos.org/mailman/listinfo/centos
> 
> ___
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Re: [CentOS] Top 7 Programming Languages That Employers Really Want

[Georgios]

Your sample isnt representative.


On Fri, 2019-10-18 at 10:28 +0800, Turritopsis Dohrnii Teo En Ming
wrote:
> Subject: Top 7 Programming Languages That Employers Really Want
> 
> Good day from Singapore,
> 
> Article: Top 7 Programming Languages That Employers Really Want
> Author: Nick Kolakowski
> Date Published: 14 October 2019
> Link: 
> https://insights.dice.com/2019/10/14/7-programming-languages-employers-want/
> 
> This is just a quick survey. May I know what programming languages do
> you know? I am considering being a programmer or developer.
> How long will it take for me to master a programming language like
> C++, Java, and Python?
> 
> Thank you very much.
> 
> 
> 
> 
> 
> 
> 
> 
> 
> -BEGIN EMAIL SIGNATURE-
> 
> The Gospel for all Targeted Individuals (TIs):
> 
> [The New York Times] Microwave Weapons Are Prime Suspect in Ills of
> U.S. Embassy Workers
> 
> Link: 
> https://www.nytimes.com/2018/09/01/science/sonic-attack-cuba-microwave.html
> 
> *
> ***
> 
> Singaporean Mr. Turritopsis Dohrnii Teo En Ming's Academic
> Qualifications as at 14 Feb 2019 and refugee seeking attempts at the
> United Nations Refugee Agency Bangkok (21 Mar 2017) and in Taiwan (5
> Aug 2019):
> 
> [1] https://tdtemcerts.wordpress.com/
> 
> [2] https://tdtemcerts.blogspot.sg/
> 
> [3] https://www.scribd.com/user/270125049/Teo-En-Ming
> 
> -END EMAIL SIGNATURE-
> ___
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