Re: [CentOS] SAMBA as AD DC

2014-09-14 Thread Markus Steinborn

Hi Miguel,

Miguel Medalha wrote:
Anyway, Sernet also provides a source rpm. Why not build up from 
that base?



CentOS 7 is using systemd - that would cause problems.


And anyway, I've used the package samba from CentOS-7 as base. This way, 
incmpatibilites with base samba4 are minimized (same paths etc.).


I've already written in this thread: It has turned out that selinux is 
the problem - turning off selinux helps.. But that is not really what 
you want to...And since the problem is selinux, I am not sure if 
Sernet's source would have anything changed.


Anyway, I do not think that my package is broken anymore since selinux 
configuration is a different thing.



Greetings

Markus
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Re: [CentOS] ZFS

2014-09-14 Thread Miguel Medalha
> Maybe you can tune ZFS further, but I tried it in userspace (with FUSE) and 
> reading was a almost 5 times slower than MDADM.

That alone is meaningless.  MDADM with which filesystem? 

Zfsonlinux does not work in user space,  it is a kernel module. Just try it. 
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[CentOS] ZFS

2014-09-14 Thread Chris
On 09/08/2014 09:00 PM, Andrew Holway wrote:
> Try ZFS http://zfsonlinux.org/

Maybe you can tune ZFS further, but I tried it in userspace (with FUSE)
and reading was a almost 5 times slower than MDADM.

-- 
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Christian
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Re: [CentOS] nouveau crash on centos 6.5

2014-09-14 Thread Chris
On 09/15/2014 04:02 AM, Valeri Galtsev wrote:
> I myself am using ATI usually (even after they were bought out by 
> AMD).

I used to use ATI. Accidentally, the last computers I bought had a
NVIDIA card. I heard Linux support of both boards would be similar.

When I bought a new notebook, I tested it with a live linux CD at the
shop. I didn't want to compare all hardware components with internet
lists and search for drivers. Graphics worked, WIFI also out of the box!

My desktop is a Dell machine. Linux support is flawless. Later I read in
a computer magazine, that there are Dell machines where you hardly get
the right drivers. That's why I wouldn't order a machine by mail-order
anymore. Linux isn't supported by Dell, they "recommend" Windows, at
least in Germany.

> Usually Dell workstations (Desktops actually) have ATI card as one
> of choices. These cards are good ones, with discrete video memory
> (to the contrary to some video chips with "shared" memory, and yes,
> there are ATI videochips like with shared memory found in some
> laptops).

Oh, shared memory! That's a good aspect.


-- 
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Christian
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Re: [CentOS] SAMBA as AD DC

2014-09-14 Thread Arun Khan
On Mon, Sep 15, 2014 at 4:07 AM, Miguel Medalha  wrote:
>>> Why don't  you use Sernet Enterprise Samba?
>
>> (...) they do not provide RPMs for RHEL/CentOS 7. So this seems not to be an 
>> option.
>
> As someone said before, you don't need to use "the latest and greatest" to 
> run a functional service... On a production environment that is even often 
> undesirable until things settle down...
>
> Anyway, Sernet also provides a source rpm. Why not build up from that base?

+1 However, the init scripts from the built RPMs may not be compatible
with C7 (systemd).
I believe the OP is having problems with starting the daemons not
building the Samba4.

The Sernet Samba4 packages work like a champ on C6.5.

-- Arun Khan
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Re: [CentOS] nouveau crash on centos 6.5

2014-09-14 Thread Valeri Galtsev

On Sun, September 14, 2014 10:08 am, Chris wrote:
> On 09/12/2014 04:33 PM, Valeri Galtsev wrote:
>> Yes, it seems to be about time for Linux folks to stop liking NVIDIA
>> (and
>> being stuck with proprietary binary drivers) and start liking more
>> others
>> who provide more documentation about their card internals thus giving
>> open
>> source teams enough information to maintain decently working open source
>> drivers.
>
> I'm also using proprietary NVIDIA drivers.
>
>> [ - The one who favored ATI some 12 years back at the peak of Linux love
>> to NVIDIA ;-)]
>
> Which graphics board would you recommend?
>

I'm not an expert to recommend something. I myself am using ATI usually
(even after they were bought out by AMD). Usually Dell workstations
(Desktops actually) have ATI card as one of choices. These cards are good
ones, with discrete video memory (to the contrary to some video chips with
"shared" memory, and yes, there are ATI videochips like with shared memory
found in some laptops). So basically, if I'm awfully cautious I double
check that it is discrete video memory. You know what "shared" memory is,
right? It is portion of main RAM that that bad chip uses as its video
memory. In addition to the fact that you are not getting some hardware
(video RAM) that is implied by specifications, there is architecturally
awful thing about that: you have video traffic (60 video frames per second
worth, or 50 frames in Europe) on the memory bus. The traffic that doesn't
belong there in the first place, as video RAM is used for your screen
content always. And portion of your RAM bandwidth is stolen as well. I
would void computer science degree of the idiot who invented that. But its
continuing existence is due to sad fact that mass customer is basing the
choice in "pricegrabber" results to the contrary to technical worthiness..

Just my 2 c.

Valeri



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] default devtools enabled for users

2014-09-14 Thread Jonathan Billings
On Sep 14, 2014, at 10:57 AM, Adrian Sevcenco  wrote:
> Hi! I want to make the default environment for users the
> environment of devtoolset .. and i am thinking to do it this way:
> 1. make /bin/bash-devtools with the content  
> scl enable devtoolset-2 bash "$@"
> 
> 2. change for the prospective users the shell from /bin/bash to 
> /bin/bash-devtoolset
> 
> Is this the best way? Do anyone see or know of any pitfalls with this? 

Hi,

I suspect that'll break a couple things. Off the top of my head, you'll need to 
add it to /etc/shells.

You might get more milage out of putting the scl command in an 
/etc/profile.d/*.sh script.  You could put some logic in it so non-root or 
certain user/groups are the only ones that load it.


--
Jonathan Billings 


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Re: [CentOS] SAMBA as AD DC

2014-09-14 Thread Miguel Medalha
>> Why don't  you use Sernet Enterprise Samba?

> (...) they do not provide RPMs for RHEL/CentOS 7. So this seems not to be an 
> option.

As someone said before, you don't need to use "the latest and greatest" to run 
a functional service... On a production environment that is even often 
undesirable until things settle down...

Anyway, Sernet also provides a source rpm. Why not build up from that base?
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Re: [CentOS] C5 : Deleting un-deletable files ?

2014-09-14 Thread Keith Keller
On 2014-09-14, Bill Campbell  wrote:
> On Sun, Sep 14, 2014, Always Learning wrote:
>>
>>The fsck cured the problem.  The problem files were removed by fsck
>>during its recovery/rectification.
>
> The first thing you should do when you find files or directories
> is use 'lsattr' to check the attributes.

The OP already did that.

> You can use the 'chattr' command to change the attributes with
> something like 'chattr -i /bin/ps' to remove immutable attribute.

The OP tried chattr, and reported that it failed for certain files.
This is why other people suggested an fsck; these are both indicators of
a damaged filesystem.

--keith


-- 
kkel...@wombat.san-francisco.ca.us


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Re: [CentOS] C5 : Deleting un-deletable files ?

2014-09-14 Thread Bill Campbell
On Sun, Sep 14, 2014, Always Learning wrote:
>
>Thank you to Steven and to Valeri for an excellent idea.
>
>The fsck cured the problem.  The problem files were removed by fsck
>during its recovery/rectification.

The first thing you should do when you find files or directories
is use 'lsattr' to check the attributes.  In particular look for
the 'i' attribute which marks the entry as immutable.  A favorite
trick of crackers is to put their own versions of commands such
as /bin/ps, /bin/ls, /usr/bin/find, etc. to hide their activity.

You can use the 'chattr' command to change the attributes with
something like 'chattr -i /bin/ps' to remove immutable attribute.
If there are multiple attributes shown by the 'lsattr' command,
simply add them like 'chattr -iAs /bin/ps'.  It also takes the -R
option to run recursively through a directory.

Bill
-- 
INTERNET:   b...@celestial.com  Bill Campbell; Celestial Software LLC
URL: http://www.celestial.com/  PO Box 820; 6641 E. Mercer Way
Voice:  (206) 236-1676  Mercer Island, WA 98040-0820
Fax:(206) 232-9186  Skype: jwccsllc (206) 855-5792

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appetite at one end and no responsibility at the other.
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Re: [CentOS] SAMBA as AD DC

2014-09-14 Thread James Hogarth
On 14 September 2014 09:01, Markus Steinborn  wrote:

> Hi  Miguel
>
> Miguel Medalha schrieb:
>
>> Why don't  you use Sernet Enterprise Samba?
>>
>> They provide precompiled packages for a bunch of distros.
>>
> I've read in this list recently ( archived at http://lists.centos.org/
> pipermail/centos/2014-September/145681.html )that they do not provide
> RPMs for RHEL/CentOS 7. So this seems not to be an option.
>
>
There's no 'need' to  be on C7 right now ...

If your requirement is "runs sernet samba for AD services" then C7 does not
meet that requirement at this time ...

C6 is supported till 2020 ... there's no hurry here.
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Re: [CentOS] nouveau crash on centos 6.5

2014-09-14 Thread Chris
On 09/12/2014 04:33 PM, Valeri Galtsev wrote:
> Yes, it seems to be about time for Linux folks to stop liking NVIDIA (and
> being stuck with proprietary binary drivers) and start liking more others
> who provide more documentation about their card internals thus giving open
> source teams enough information to maintain decently working open source
> drivers.

I'm also using proprietary NVIDIA drivers.

> [ - The one who favored ATI some 12 years back at the peak of Linux love
> to NVIDIA ;-)]

Which graphics board would you recommend?

-- 
Gruß,
Christian
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[CentOS] Linux Guest in KVM - Best Display Resolution

2014-09-14 Thread Chris
Dear All,

what settings do you use in KVM for Linux guests?

The resolution with VNC / VGA is 1024x768 only. If I choose Spice / QXL
the resolution is better, but colors aren't displayed properly and some
letters are missing!

In the Debian guest I installed the packages xserver-xspice and
spice-client-gtk, but it wasn't better.

So how do you configure KVM-guests with graphical interface?

-- 
Gruß,
Christian
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[CentOS] default devtools enabled for users

2014-09-14 Thread Adrian Sevcenco
Hi! I want to make the default environment for users the
environment of devtoolset .. and i am thinking to do it this way:
1. make /bin/bash-devtools with the content  
scl enable devtoolset-2 bash "$@"

2. change for the prospective users the shell from /bin/bash to 
/bin/bash-devtoolset

Is this the best way? Do anyone see or know of any pitfalls with this? 

Thanks a lot!
Adrian

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Re: [CentOS] SAMBA as AD DC

2014-09-14 Thread Markus Steinborn

Hi  Miguel

Miguel Medalha schrieb:

Why don't  you use Sernet Enterprise Samba?

They provide precompiled packages for a bunch of distros.
I've read in this list recently ( archived at 
http://lists.centos.org/pipermail/centos/2014-September/145681.html 
)that they do not provide RPMs for RHEL/CentOS 7. So this seems not to 
be an option.



Greetings

Markus
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Re: [CentOS] SAMBA as AD DC

2014-09-14 Thread Markus Steinborn

Hi Rob,

Rob Kampen wrote:
Would this be due to not starting the nmb service? Samba provide two 
services smb AND nmb, you want to ensure both are running. HTH
Well, for AC DC mode, starting samb and/or nmbd ussues an error saying 
you would have to start "samba" instead - in this mode smbd and nmbd are 
not supposed to be started directly.


And "ps xa" shows identical process lists for the working variant 
"startet by "/usr/sbin/samba" and for the non working variant "/service 
samba start".


But I also had an idea what to check: Turning selinux off did fix the 
samba started by systemd. So it is a selinux issue.


Greetings

Markus Steinborn

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