Re: [CentOS] Ultrabook for CentOS?

[Fabrizio Di Carlo]

Dell XPS 13 has the advantage to be in the market with a special version of
Ubuntu made for engineers, called project Sputnik


On Wed, Nov 27, 2013 at 9:48 PM, Ned Slider  wrote:

> On 27/11/13 13:26, Nux! wrote:
> > Hello,
> >
> > I need to buy an ultrabook. Any recommendations for something that
> > would work out of the box more or less?
> > I do not want a Chromebook (or anything ARM) or one of these new
> > "touch" laptops, in fact I'm after a nice matte screen. Budget is
> > modest-ish (£500/$800) so dont go crazy. :)
> >
> > Thanks!
> >
>
> Dell XPS 13 ultrabook works fine with RHEL6/CentOS6 out of the box. It
> does have a glossy screen though.
>
> You can get some very good prices on refurbished models through Dell
> Outlet for around the £500 mark as opposed to over £1000 new. You should
> be able to pick up a Core i5, 8GB RAM, SSD and full HD display for
> around £500 but you sometimes have to wait for the exact spec you want
> to become available (and they do get snapped up quickly).
>
>
>
>
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-- 
"The intuitive mind is a sacred gift and the rational mind is a faithful
servant. We have created a society that honors the servant and has
forgotten the gift." (A. Einstein)

"La mente intuitiva è un dono sacro e la mente razionale è un fedele servo.
Noi abbiamo creato una società che onora il servo e ha dimenticato il
dono."  (A. Einstein)

Fabrizio Di Carlo
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Re: [CentOS] died again

[Michael Hennebry]

On Thu, 28 Nov 2013, Eliezer Croitoru wrote:

> The first thing is to check voltage in the BIOS.
> Then if it's by percentage 12V should be between 11.9 to 12.1 when these
> are quite not the best thing to have if possible.
> Also take a look at the 3V and 5V to make sure that all the voltage in
> the machine is in the acceptable percentage which should be about 1-3%
> off the 12.0 3.0 5.0
> ( It should be there in the BIOS)

'Tis there.
Don't remember what it said, except that 12v was 12.0v.

> The next step is to verify that the memory is not in high "performance"
> settings which can be high voltage or unverified settings.
> Most D865GBFL should work with most memory chips and cards out of the box.
> I do not remember if these boards do have memory settings in jumpers but
> since it's a P4 I would assume it's possible to see those (not yet
> finished to read the whole 142 pdf).

The one I found is 98 pages.

> Try to adjust the agp Aperture size to lower then 64MB (16).

I saw something about aperature size.
Is it how many memory addresses allocated to AGP?

> The next step will be to restore the bios defaults settings and
> disabling the 1.44 (unless you have one).

That means the floppy drive?
I have one.

> Also don't be tempted to replace this beast with a ARM\ATOM or any other
> suggestion that might not understand what a 3.2 P4 can do that the BEST
> ATOM cpu cannot.

Not tempted.  My machine was somewhat high-end when I got it.

> I do not know where you live at and there-for the price can vary from
> one place to another and which can be over 200$ and over 300$.

Fargo, ND.

> This machine is not described as Linux compatible by INTEL and which can
> or cannot be a reason for anything and the change of Plug And Play flag
> in the bios might help to solve some problems\issues.

The current setting, which I think is the default,
is Plug and Play OS no, which meands that
the BIOS configures things instead of the OS.

> It is possible that the power supply was a bit loaded using two disk
> devices and which can cause some system freezes when a high load is
> there on it for a long period of time.

The second drive has been there for a long time.
It might have even been an option when I first got the machine.
There are still two empty slots on the rack.

> To make sure that the power supply is there and working properly not
> harming any hardware you should open the case (if it's an easy to open

I have no basis for comparing with other desktops,
but I can see that I will need to open it.

> one) while it's off the network grid and make sure that all capacitors
> are in a good shape.

> I am almost sure that this CPU is a 32bit and if you don't need(like

Correct.

> many) the fancy GRAPHICS and some additions that was added to the latest
> and shiny releases of Fedora then 14 is just fine.

Even if F14 still got security updates,
I'd still want to know why CentOS has been crapping out on me.
It might affect F14 eventually.

> The basic badblocks tool can help you discover if there is a problem
> with the software accessing any of the drives.
> Note that it happens that access to a DISK can be because of a cable
> sometimes.

I got a bunch of orphan node once,
but since then, fsck has been giving the partition a clean bill of health.

> In a case you want to make sure that the problem is in another level
> then the DISK you can try to work with a LIVE dvd\cd not touching any
> DISK IO while working on the PC.(this machine do not have USB boot
> support the last time I checked).

-- 
Michael   henne...@web.cs.ndsu.nodak.edu
"On Monday, I'm gonna have to tell my kindergarten class,
whom I teach not to run with scissors,
that my fiance ran me through with a broadsword."  --  Lily
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Re: [CentOS] LSB Certification

[Frank Cox]

On Thu, 28 Nov 2013 00:16:25 -0500
Mark LaPierre wrote:

> Could someone provide a URL to a page that states what LSB level
> RHEL/CentOS 6.4 is certified to.

https://www.linuxbase.org/lsb-cert/productdir.php?info&pcid=278

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Re: [CentOS] LSB Certification

[Peter]

On 11/28/2013 06:16 PM, Mark LaPierre wrote:
> Hey All,
> 
> Could someone provide a URL to a page that states what LSB level
> RHEL/CentOS 6.4 is certified to.
> 
> I'm looking to download a driver:
> 
> http://www.openprinting.org/printer/Epson/Epson-WorkForce_1100
> 
> They offer a driver for LSB 3.1 or LSB 3.2.  I'm hoping that one of
> those applies to CentOS 6.4.

yum install redhat-lsb

...then it will be compliant to LSB 4.0


Peter

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[CentOS] LSB Certification

[Mark LaPierre]

Hey All,

Could someone provide a URL to a page that states what LSB level
RHEL/CentOS 6.4 is certified to.

I'm looking to download a driver:

http://www.openprinting.org/printer/Epson/Epson-WorkForce_1100

They offer a driver for LSB 3.1 or LSB 3.2.  I'm hoping that one of
those applies to CentOS 6.4.

-- 
_
   °v°
  /(_)\
   ^ ^  Mark LaPierre
Registered Linux user No #267004
https://linuxcounter.net/

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[CentOS] nss_ldap loop sleeping after ...

[aurfalien]

Hi,

I rebooted a old Centos 5 box and now its stuck in an ever increasing timeout 
loop;

nss_ldap: reconnecting tl LDAP server (sleeping # seconds)

This happens before network services starts.

Any one know how I can break out of this?

I tried booting in single user mode from the grub menu but no dice, the thing 
keeps nss_ldap looping.

Thanks in advance,

- aurf

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Re: [CentOS] died again

[Eliezer Croitoru]

Hey Michael,

I would try to check it up from bottom up and note that each time it 
fails you may have an error popping out later.

The first thing is to check voltage in the BIOS.
Then if it's by percentage 12V should be between 11.9 to 12.1 when these 
are quite not the best thing to have if possible.
Also take a look at the 3V and 5V to make sure that all the voltage in 
the machine is in the acceptable percentage which should be about 1-3% 
off the 12.0 3.0 5.0
( It should be there in the BIOS)

The next step is to verify that the memory is not in high "performance" 
settings which can be high voltage or unverified settings.
Most D865GBFL should work with most memory chips and cards out of the box.
I do not remember if these boards do have memory settings in jumpers but 
since it's a P4 I would assume it's possible to see those (not yet 
finished to read the whole 142 pdf).

Try to adjust the agp Aperture size to lower then 64MB (16).

In the Hardware monitoring try to see what is the CPU heat which should 
be up to 70C but in some cases will show 90C+ but it's due to sensor 
failure.

The next step will be to restore the bios defaults settings and 
disabling the 1.44 (unless you have one).

This is the BIOS level I can think about from the product guide side.

The next step is to make sure you have backups for what you need (just 
as a regular basis task that should be done)

Also don't be tempted to replace this beast with a ARM\ATOM or any other 
suggestion that might not understand what a 3.2 P4 can do that the BEST 
ATOM cpu cannot.

I do not know where you live at and there-for the price can vary from 
one place to another and which can be over 200$ and over 300$.

This machine is not described as Linux compatible by INTEL and which can 
or cannot be a reason for anything and the change of Plug And Play flag 
in the bios might help to solve some problems\issues.

It is possible that the power supply was a bit loaded using two disk 
devices and which can cause some system freezes when a high load is 
there on it for a long period of time.

To make sure that the power supply is there and working properly not 
harming any hardware you should open the case (if it's an easy to open 
one) while it's off the network grid and make sure that all capacitors 
are in a good shape.

This is a point which you should understand this beast is old and since 
it works on 3.2 Ghz some parts might have gotten old but not necessarily 
needs to be replaced.

In a case you are replacing anything you should take couple parts together:
CPU
RAM
Power Supply.
Fans.

Sometimes it can sound a drastic change but it is recommended since 
there are couple unknowns in the picture which I would prefer to not 
discover as a fact.

I am almost sure that this CPU is a 32bit and if you don't need(like 
many) the fancy GRAPHICS and some additions that was added to the latest 
and shiny releases of Fedora then 14 is just fine.

On the next fedora release I would like to hear from someone there how 
many times in 5 years he replaced his chairs or his drill for example.
(I assume it was not done 5 times over all these 5 years)

You can look up on the software level 4-5 times but still each time the 
machine got stuck some information was not written to the FS and it 
happens while sometime causes a problem to read a file.

The basic badblocks tool can help you discover if there is a problem 
with the software accessing any of the drives.
Note that it happens that access to a DISK can be because of a cable 
sometimes.

In a case you want to make sure that the problem is in another level 
then the DISK you can try to work with a LIVE dvd\cd not touching any 
DISK IO while working on the PC.(this machine do not have USB boot 
support the last time I checked).

I do hope it will help you to find the right path with your PC.

Regards,
Eliezer

On 25/11/13 18:58, Michael Hennebry wrote:
> The computer is a DakTEch Freedom 4 P4 DDR System.
> The system board is a D865GBFL w/LAN,audio & video
> Processor Intel Pentium 4 3.2 Ghz 800FSB
> I got it in 2006.
> I switched to CentOS because Fedora will not install on it any more.
> Fedora 14 is the last I was able to install.
> Installation has almost always been a tremendous hassle for me,
> so I've usually not gone with the latest
> and greatest until my current nears EOL.
> I've read that a kernel bug is the reason that I could not install F16.
> Supposedly it had been fixed by F17, but no go.

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Re: [CentOS] died again

[Mauricio Tavares]

On Tue, Nov 26, 2013 at 6:58 PM, Michael Hennebry
 wrote:
> On Tue, 26 Nov 2013, m.r...@5-cent.us wrote:
>
>> Depends on the cost of the system, and the budget... and it sounds to me
>> as though the OP is working on his own system, and his budget approaches
>> $1 as a limit I understand that all too well (though it's not an issue
>> for me these days).
>
> My current income is zero.
> I'm burning what little retirement money I have.
> Some expenses I find more annoying than others.
> A computer is rather important for a job search these days.
>
>> To the OP: is this a gaming machine, or just what you use? You mentioned
>> $200 before install - I've seen refurbed entire desktops for $300.
>
> No.  I've never been into gaming.
> I've got a rather high-end video card because that
> was the only available AGP card available in a hurry.
>
> The $200 comes from googling D865GBFL price.
>
> $300 desktops? Where?
>
  http://www.newegg.com/Product/Product.aspx?Item=N82E16883155832.
They also have a few older (core2 duos) desktop for $200 or less.

> --
> Michael   henne...@web.cs.ndsu.nodak.edu
> "On Monday, I'm gonna have to tell my kindergarten class,
> whom I teach not to run with scissors,
> that my fiance ran me through with a broadsword."  --  Lily
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Re: [CentOS] Automated LSI card management.

[John R Pierce]

On 11/27/2013 3:56 PM, Grant Keller wrote:
> I am trying to come up with a way to auto add new servers deployed with
> LSI raid cards to the MegaRaid Software management server. From the gui,
> it looks like I can add them by IP manually, or have the control server
> scan for hosts with the MegaRaid client software, which only works if
> the host is on the same network. Anybody ever work with this software
> and done something like this?

I've never found any value in using that megaraid management server, I 
just use megacli on the target system.



-- 
john r pierce  37N 122W
somewhere on the middle of the left coast

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Re: [CentOS] Question on list of packages on centos 7

[Digimer]

On 27/11/13 18:37, Jerry Geis wrote:
> Is there a way to get a list of packages AND version of that package
> in centos/redhat 7? Perhaps from one a beta of 7 or something?
> 
> I searched for "list of packages in redhat 7" and I can get a list
> but the list did not have any version information just the
> package name and description.
> 
> Not off topic just "future" topic.
> 
> Thanks, everyone have a great Thanksgiving!
> 
> jerry

I'm sure you know, but Red Hat doesn't announce anything about the
contents of future releases until the day they are released. They
reserve the right to change anything at any time. So it's effectively
impossible to answer this question.

If you're looking for rough guidelines, I'd say to look at the packages
in F18/F19, but even then, it's only a very rough look.

-- 
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[CentOS] Automated LSI card management.

[Grant Keller]

Hello,

I am trying to come up with a way to auto add new servers deployed with
LSI raid cards to the MegaRaid Software management server. From the gui,
it looks like I can add them by IP manually, or have the control server
scan for hosts with the MegaRaid client software, which only works if
the host is on the same network. Anybody ever work with this software
and done something like this?
-- 
Grant Keller
Sonic.net System Operations
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[CentOS] Question on list of packages on centos 7

[Jerry Geis]

Is there a way to get a list of packages AND version of that package
in centos/redhat 7? Perhaps from one a beta of 7 or something?

I searched for "list of packages in redhat 7" and I can get a list
but the list did not have any version information just the
package name and description.

Not off topic just "future" topic.

Thanks, everyone have a great Thanksgiving!

jerry
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Re: [CentOS] Filesystem labeling confusion or mess up

[Cliff Pratt]

*Something* is causing it to appear that there are two paths. I can't think
how else the two apparently different disks have the *same* file system.
But I've not used iSCSI much. Perhaps if you post the type of the device
someone might have any idea?

Cheers,

Cliff


On Wed, Nov 27, 2013 at 11:30 PM, Götz Reinicke - IT Koordinator <
goetz.reini...@filmakademie.de> wrote:

> Hi Cliff,
>
> theer is just one path; I rechecked. The storage and server are attached
> currently direct with one twinaxial cable and just one ip on each side.
>
> Multipathing was never configured.
>
> I'm confused.
>
> Currently I reattached the targets and reformatted the devices.
>
> in dmesg I just see one sdb and one sdc.
>
> sda is the internal disk and no more disk devices show up e.g. with
> fdisk -l.
>
> Any more suggestions or thoughts?
>
> /Götz
>
> Am 26.11.13 23:08, schrieb Cliff Pratt:
> > Looks like you have more than one path to the devices. I would expect to
> > see *4* devices.
> >
> > Cheers,
> >
> > Cliff
> >
> >
> > On Wed, Nov 27, 2013 at 2:36 AM, Götz Reinicke - IT Koordinator <
> > goetz.reini...@filmakademie.de> wrote:
> >
> >> Hi,
> >>
> >> I do have an iscsi storage with two raidsets. I'm logged in to the
> >> target and get two devices: /dev/sdb and /dev/sdc.
> >>
> >> After formatting the devices with ext4 I realised, that I had used a
> >> wrong label, so I tried to relabel the devices.
> >>
> >> But now I'm confused:
> >>
> >> doing a e2label /dev/sdb or /dev/sdc returns always the same label name
> >> for both devices.
> >>
> >> so I did  "e2label /dev/sdb students" and "e2label /dev/sdc staff" and
> >> now mounting the devices shows the same filesystem under sdb and sdc!
> >>
> >> Looks like sdc (an empty device) is gone...
> >>
> >>
> >> Any suggestions or explanations?
> >>
> >> Thanks and best regards . Götz
> <...>
>
>
> --
> Götz Reinicke
> IT-Koordinator
>
> Tel. +49 7141 969 82 420
> E-Mail goetz.reini...@filmakademie.de
>
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> Akademiehof 10
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>
> Eintragung Amtsgericht Stuttgart HRB 205016
>
> Vorsitzender des Aufsichtsrats: Jürgen Walter MdL
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> Forschung und Kunst Baden-Württemberg
>
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[CentOS] complicated svn, apache, krb5 and selinux problem

[m . roth]

CentOS 6.4.

We've got a subversion repo on a server. Currently, it's set to use krb5.
Trouble is, the krb5.conf is set up to use pcscd authentication (using PIV
cards). Whether anything else on the server needs it, it appears that when
people issue certain svn commands (I haven't nailed down which), the thing
tries to look at the pcscd.pid... and selinux complains that this is
naughty. (We're in permissive mode.)

I don't know deeply enough if anything else really needs to do this on the
server, but I'd like to fix it so that doing svn stuff does *not* invoke
that call. It *appears* if I comment out the pkinit_identities, we don't
get the error (for obvious reasons).

Ideally, I'd like to find some way to configure subversion - maybe in the
/etc/httpd/conf.d/subversion.conf - so that it doesn't try that, but we
*do* want it to do password krb5 authentication.

Does this make sense? If so, is it do-able?

   mark, back at googling

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Re: [CentOS] Ultrabook for CentOS?

[Ned Slider]

On 27/11/13 13:26, Nux! wrote:
> Hello,
>
> I need to buy an ultrabook. Any recommendations for something that
> would work out of the box more or less?
> I do not want a Chromebook (or anything ARM) or one of these new
> "touch" laptops, in fact I'm after a nice matte screen. Budget is
> modest-ish (£500/$800) so dont go crazy. :)
>
> Thanks!
>

Dell XPS 13 ultrabook works fine with RHEL6/CentOS6 out of the box. It 
does have a glossy screen though.

You can get some very good prices on refurbished models through Dell 
Outlet for around the £500 mark as opposed to over £1000 new. You should 
be able to pick up a Core i5, 8GB RAM, SSD and full HD display for 
around £500 but you sometimes have to wait for the exact spec you want 
to become available (and they do get snapped up quickly).




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Re: [CentOS] died again

[m . roth]

Michael Hennebry wrote:
> On Wed, 27 Nov 2013, m.r...@5-cent.us wrote:
>
>> Michael Hennebry wrote:
>>> Fan rpms (approximately, two of them changed):
>>> Processor region: 3000
>>> Rear: 1500
>>> Front:   0
>
> This is ok?

I have no idea if a) you have a front fan, or b) if it has a separate sensor.
>
>>> On boot I got a message saying that the CPU was being
>>> throttled because it was over the temperature threshold.
>>> IIRC the BIOS said that the CPU area temperature was about 80 C.
>>>
>> BING! BING! BING!
>>
>> You said you'd opened the case - did you clean the heat sink on the CPU?
>
> Not lately I haven't, but it seems that I will soon.
>
>> Can you turn the system on with the case cover off, and see if the fan
>> on the CPU is running?
>
> Yes.
>
>> One thing I've never done, or thought of until now, was whether the
>> thermal grease between the CPU and the heat sink had dried out. If it's
>> running hot, that's a possibility, so you might clean that off and put
>> on some new (a buck or so at any computer parts store). Doesn't need
much -
>> the force of tightening the heat sink will spread it much farther than
>> you expect it to, and you don't want it coming out the sides.
>
> "the force of tightening the heat sink" frightens me silly,
> but I suppose that would be better than a dead CPU fan.
> My recollection is that that does not come off.

Not to worry. It will probably be a lever that you push down and it
catches. I doubt it's like in some servers, where you screw it on... and
even in that case, you screw it till you feel it stop turning.

It *really* isn't a Big Deal. These days, nothing's like it was back in
the eighties, when taking a system apart was a *lot* of screws, and you
could place things the wrong way. For a long time now, they expect people
to upgrade or replace parts (cheaper parts, more failures), and if no one
else, the zillions of tech support companies leaned on the manufacturers,
because they wanted their techs to spend less time per repair.

   mark

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Re: [CentOS] died again

[Michael Hennebry]

On Wed, 27 Nov 2013, m.r...@5-cent.us wrote:

> Michael Hennebry wrote:
>> Fan rpms (approximately, two of them changed):
>> Processor region: 3000
>> Rear: 1500
>> Front:   0

This is ok?

>> On boot I got a message saying that the CPU was being
>> throttled because it was over the temperature threshold.
>> IIRC the BIOS said that the CPU area temperature was about 80 C.
>>
> BING! BING! BING!
>
> You said you'd opened the case - did you clean the heat sink on the CPU?

Not lately I haven't, but it seems that I will soon.

> Can you turn the system on with the case cover off, and see if the fan on
> the CPU is running?

Yes.

> One thing I've never done, or thought of until now, was whether the
> thermal grease between the CPU and the heat sink had dried out. If it's
> running hot, that's a possibility, so you might clean that off and put on
> some new (a buck or so at any computer parts store). Doesn't need much -
> the force of tightening the heat sink will spread it much farther than you
> expect it to, and you don't want it coming out the sides.

"the force of tightening the heat sink" frightens me silly,
but I suppose that would be better than a dead CPU fan.
My recollection is that that does not come off.

-- 
Michael   henne...@web.cs.ndsu.nodak.edu
"On Monday, I'm gonna have to tell my kindergarten class,
whom I teach not to run with scissors,
that my fiance ran me through with a broadsword."  --  Lily
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Re: [CentOS] Machine check events

[m . roth]

Glenn Eychaner wrote:
> And all that work was done to get this, output of a corrected memory
> parity error. I get about one of these per workstation per 3 days, more
or less;
> is this a surprising number? (The workstation under the heaviest load gets
> more, while the idle spare gets none at all; no surprise there!)
>
> MCE 6
> CPU 1 BANK 0
> TIME 1385426237 Mon Nov 25 21:37:17 2013
> MCG status:
> MCi status:
> Corrected error
> Error enabled
> MCA: Internal parity error
> STATUS 904f0005 MCGSTATUS 0
> MCGCAP c09 APICID 2 SOCKETID 0
> CPUID Vendor Intel Family 6 Model 60
>

Is the system still under warranty? How 'bout the memory, if you've
replaced it? You *should* replace it. It's not going to get better

  mark

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Re: [CentOS] Machine check events

[Glenn Eychaner]

And all that work was done to get this, output of a corrected memory parity
error. I get about one of these per workstation per 3 days, more or less; is
this a surprising number? (The workstation under the heaviest load gets
more, while the idle spare gets none at all; no surprise there!)

MCE 6
CPU 1 BANK 0 
TIME 1385426237 Mon Nov 25 21:37:17 2013
MCG status:
MCi status:
Corrected error
Error enabled
MCA: Internal parity error
STATUS 904f0005 MCGSTATUS 0
MCGCAP c09 APICID 2 SOCKETID 0 
CPUID Vendor Intel Family 6 Model 60

Anyway,
-G.

On Nov 27, 2013, at 3:32 PM, Glenn Eychaner  wrote:

> On further, further, further toying, I now have mcelog running on my 32-bit
> CentOS 6 systems! I admit to doing it the "dumb" way: I grabbed the source
> from the git repository, compiled and installed it, and THEN discovered
> that the init.d file supplied with the source was not CentOS compatible, so
> I grabbed the x86-64 RPM, extracted the startup files, and copied them into
> place. The RPM was small enough to make this easy.
> 
> What I SHOULD have done is to grab the source RPM, replace the source with
> the latest source, build and install the source RPM, and then repackage the
> RPMs again for future consumption.  Maybe I will try that at a future date, 
> but
> I don't really have time today.
> 
> -G.
> 
> On Nov 26, 2013, at 11:11 AM, Glenn Eychaner  wrote:
> 
>> On further, further investigation, it looks like according to the mcelog 
>> install
>> guide at http://www.mcelog.org/installation.html, I could "roll my own" for 
>> 32-bit
>> CentOS 6:
>> 
>> "For bad page offlining you will need a 2.6.33+ kernel or a 2.6.32 kernel 
>> with
>> the soft offlining capability backported (like RHEL6 or SLES11-SP1)"
>> "The kernel has to have CONFIG_X86_MCE enabled. For 32bit kernels you
>> need at least a 2.6,30 kernel."
>> 
>> The current kernel I am running is 2.6.32-358.23.2, but I can't tell whether 
>> it
>> has CONFIG_X86_MCE enabled. How can I find this out?
>> 
>> JD writes:
>> 
>>> yum info mcelog
>>> ...
>>> Description : mcelog is a daemon that collects and decodes Machine Check
>>>   : Exception data on x86-64 machines.
>>> 
>>> So not for 32-bit...
>> 
>> On Nov 26, 2013, at 9:25 AM, Glenn Eychaner  wrote:
>> 
>>> Further investigation seems to indicate that these events should be handled
>>> by "mcelog" or "mced". However, there is no /var/log/mcelog, nor do I have a
>>> "mcelog" or "mced" binary, nor does yum seem to contain anything related
>>> (based on "yum whatprovides '*/mcelog'" and similar queries).
>>> 
>>> Thus, I still don't know what to do with these errors.  Ignore them? I am
>>> running 32-bit CentOS 6.4 (legacy software reasons).
>>> 
>>> On Nov 25, 2013, at 11:05 AM, Glenn Eychaner  wrote:
>>> 
 On my new Haswell-based machines, I am occasionally seeing entries like the
 following in /var/log/messages:
kernel: [Hardware Error]: Machine check events logged
 (I would not have even noticed them, except that they get flagged by 
 logwatch.)
 These messages always occur alone, and don't seem to have a corresponding
 entry in any other log file in /var/log. How can I get more info about 
 these
 messages?

--
Glenn Eychaner (geycha...@lco.cl)
Telescope Systems Programmer, Las Campanas Observatory




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Re: [CentOS] Machine check events

[Glenn Eychaner]

On further, further, further toying, I now have mcelog running on my 32-bit
CentOS 6 systems! I admit to doing it the "dumb" way: I grabbed the source
from the git repository, compiled and installed it, and THEN discovered
that the init.d file supplied with the source was not CentOS compatible, so
I grabbed the x86-64 RPM, extracted the startup files, and copied them into
place. The RPM was small enough to make this easy.

What I SHOULD have done is to grab the source RPM, replace the source with
the latest source, build and install the source RPM, and then repackage the
RPMs again for future consumption.  Maybe I will try that at a future date, but
I don't really have time today.

-G.

On Nov 26, 2013, at 11:11 AM, Glenn Eychaner  wrote:

> On further, further investigation, it looks like according to the mcelog 
> install
> guide at http://www.mcelog.org/installation.html, I could "roll my own" for 
> 32-bit
> CentOS 6:
> 
> "For bad page offlining you will need a 2.6.33+ kernel or a 2.6.32 kernel with
> the soft offlining capability backported (like RHEL6 or SLES11-SP1)"
> "The kernel has to have CONFIG_X86_MCE enabled. For 32bit kernels you
> need at least a 2.6,30 kernel."
> 
> The current kernel I am running is 2.6.32-358.23.2, but I can't tell whether 
> it
> has CONFIG_X86_MCE enabled. How can I find this out?
> 
> JD writes:
> 
>> yum info mcelog
>> ...
>> Description : mcelog is a daemon that collects and decodes Machine Check
>>: Exception data on x86-64 machines.
>> 
>> So not for 32-bit...
> 
> On Nov 26, 2013, at 9:25 AM, Glenn Eychaner  wrote:
> 
>> Further investigation seems to indicate that these events should be handled
>> by "mcelog" or "mced". However, there is no /var/log/mcelog, nor do I have a
>> "mcelog" or "mced" binary, nor does yum seem to contain anything related
>> (based on "yum whatprovides '*/mcelog'" and similar queries).
>> 
>> Thus, I still don't know what to do with these errors.  Ignore them? I am
>> running 32-bit CentOS 6.4 (legacy software reasons).
>> 
>> On Nov 25, 2013, at 11:05 AM, Glenn Eychaner  wrote:
>> 
>>> On my new Haswell-based machines, I am occasionally seeing entries like the
>>> following in /var/log/messages:
>>> kernel: [Hardware Error]: Machine check events logged
>>> (I would not have even noticed them, except that they get flagged by 
>>> logwatch.)
>>> These messages always occur alone, and don't seem to have a corresponding
>>> entry in any other log file in /var/log. How can I get more info about these
>>> messages?

--
Glenn Eychaner (geycha...@lco.cl)
Telescope Systems Programmer, Las Campanas Observatory




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Re: [CentOS] Thanks for the CR packages!

[Nux!]

On 27.11.2013 17:06, Paul Heinlein wrote:
> Thank you, developers, for the continuous release packages. It's nice
> to get a head start on testing 6.5 for wider release.
> 
> So far -- one VM, one dev server -- so good!

+1, really nice, tasty stuff in CR repo!
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Re: [CentOS] died again

[m . roth]

Michael Hennebry wrote:
> Guess what?
> It died again.
>
> This time I took a look at BIOS stuff.
> Fan rpms (approximately, two of them changed):
> Processor region: 3000
> Rear: 1500
> Front:   0
> Perhaps that is my problem.
> I do have more fans lying around somewhere.
>
> The last even the BIOS logged was from 2008.
> In case it matters, the BIOS version is BF86510A.86A.0038P08 .
>
> On boot I got a message saying that the CPU was being
> throttled because it was over the temperature threshold.
> IIRC the BIOS said that the CPU area temperature was about 80 C.
>
BING! BING! BING!

You said you'd opened the case - did you clean the heat sink on the CPU?
Can you turn the system on with the case cover off, and see if the fan on
the CPU is running?

One thing I've never done, or thought of until now, was whether the
thermal grease between the CPU and the heat sink had dried out. If it's
running hot, that's a possibility, so you might clean that off and put on
some new (a buck or so at any computer parts store). Doesn't need much -
the force of tightening the heat sink will spread it much farther than you
expect it to, and you don't want it coming out the sides.

mark

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Re: [CentOS] died again

[Michael Hennebry]

Guess what?
It died again.

This time I took a look at BIOS stuff.
Fan rpms (approximately, two of them changed):
Processor region: 3000
Rear: 1500
Front:   0
Perhaps that is my problem.
I do have more fans lying around somewhere.

The last even the BIOS logged was from 2008.
In case it matters, the BIOS version is BF86510A.86A.0038P08 .

On boot I got a message saying that the CPU was being
throttled because it was over the temperature threshold.
IIRC the BIOS said that the CPU area temperature was about 80 C.

-- 
Michael   henne...@web.cs.ndsu.nodak.edu
"On Monday, I'm gonna have to tell my kindergarten class,
whom I teach not to run with scissors,
that my fiance ran me through with a broadsword."  --  Lily
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Re: [CentOS] Where Did The Disk Go???

[SilverTip257]

On Wed, Nov 27, 2013 at 11:44 AM,  wrote:

> Gene Poole wrote:
> > I'm running CentOS 5.9 x86_64 on a machine I built myself that has 6 SATA
> > II hard drives (4 - 1 TB drives; 2 - 1.5 TB drives) all in several RAID-1
> > arrays. These arrays were created when I did the original installation
> > with CentOS 5.1 and each created partition (both standard and LVM) were
> > built raid 1.
> >
> > Due to some things happening around the house that required most of my
> > attention, I saw some alerts concerning drive /dev/sdb but I didn't have
> > time to address it and since I am running raid 1...  One of the tings
> that
> > happened was my home took a lightening strike and we were down for 4
> days.
>
> You *do* have the system on a UPS, right...?
> >
> > When we got our electricity back and I brought the machine back up I
> > noticed that there were only 5 drives listed  and I wasn't getting any
> > more alerts.  What was /dev/sdb was no longer listed with any command
> > (fdisk; cat /proc/mdstat; mdadm --list).
> >
> > I do have a spare drive and my questions are:
> >
> > Anyone know how I can find the serial number of the bad drive?
> > Once replaced, what is the best way to get the partitions recreated?
>
> Of the bad one? No. The other option would be to either use smartctl to
> find the serial numbers of all the rest. Recreate? Make it identical to
>

smartctl is the tool for this job.  Or look at the label on the disk.


> one of the others... actually, I think there's a script to use with parted
> that can clone a drive's partitions.
>

Once you swap in the spare drive, you can use sfdisk to clone the partition
layout.

sfdisk -d /dev/sdX | sfdisk /dev/sdY

where sdX is the healthy disk in whichever software raid1 array and sdY is
the new spare drive.

>From there you'll just add the partition(s) on the new disk to the proper
array with mdadm.


>
>mark
>
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[CentOS] Thanks for the CR packages!

[Paul Heinlein]

Thank you, developers, for the continuous release packages. It's nice 
to get a head start on testing 6.5 for wider release.


So far -- one VM, one dev server -- so good!

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Re: [CentOS] Where Did The Disk Go???

[m . roth]

Gene Poole wrote:
> I'm running CentOS 5.9 x86_64 on a machine I built myself that has 6 SATA
> II hard drives (4 - 1 TB drives; 2 - 1.5 TB drives) all in several RAID-1
> arrays. These arrays were created when I did the original installation
> with CentOS 5.1 and each created partition (both standard and LVM) were
> built raid 1.
>
> Due to some things happening around the house that required most of my
> attention, I saw some alerts concerning drive /dev/sdb but I didn't have
> time to address it and since I am running raid 1...  One of the tings that
> happened was my home took a lightening strike and we were down for 4 days.

You *do* have the system on a UPS, right...?
>
> When we got our electricity back and I brought the machine back up I
> noticed that there were only 5 drives listed  and I wasn't getting any
> more alerts.  What was /dev/sdb was no longer listed with any command
> (fdisk; cat /proc/mdstat; mdadm --list).
>
> I do have a spare drive and my questions are:
>
> Anyone know how I can find the serial number of the bad drive?
> Once replaced, what is the best way to get the partitions recreated?

Of the bad one? No. The other option would be to either use smartctl to
find the serial numbers of all the rest. Recreate? Make it identical to
one of the others... actually, I think there's a script to use with parted
that can clone a drive's partitions.

   mark

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[CentOS] Where Did The Disk Go???

[Gene Poole]

I'm running CentOS 5.9 x86_64 on a machine I built myself that has 6 SATA 
II hard drives (4 - 1 TB drives; 2 - 1.5 TB drives) all in several RAID-1 
arrays. These arrays were created when I did the original installation 
with CentOS 5.1 and each created partition (both standard and LVM) were 
built raid 1.

Due to some things happening around the house that required most of my 
attention, I saw some alerts concerning drive /dev/sdb but I didn't have 
time to address it and since I am running raid 1...  One of the tings that 
happened was my home took a lightening strike and we were down for 4 days.

When we got our electricity back and I brought the machine back up I 
noticed that there were only 5 drives listed  and I wasn't getting any 
more alerts.  What was /dev/sdb was no longer listed with any command 
(fdisk; cat /proc/mdstat; mdadm --list).

I do have a spare drive and my questions are:

Anyone know how I can find the serial number of the bad drive?
Once replaced, what is the best way to get the partitions recreated?
 
Thanks,
Gene Poole
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Re: [CentOS] Ultrabook for CentOS?

[Giles Coochey]

On 27/11/2013 15:01, Johnny Hughes wrote:

On 11/27/2013 07:26 AM, Nux! wrote:

Hello,

I need to buy an ultrabook. Any recommendations for something that
would work out of the box more or less?
I do not want a Chromebook (or anything ARM) or one of these new
"touch" laptops, in fact I'm after a nice matte screen. Budget is
modest-ish (£500/$800) so dont go crazy. :)

Thanks!


The Lenovo ThinkPad X series all seem to work very well with CentOS/RHEL.


Yes - Although they are pricey - if money were no object I'd go for a 
nice X series.


--
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Giles Coochey, CCNP, CCNA, CCNAS
NetSecSpec Ltd
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Re: [CentOS] CLI speed tester for CentOS?

[Benjamin Hackl]

On Wed, 27 Nov 2013 14:02:28 +
Timothy Murphy  wrote:

> Does anyone know of an alternative CLI speed-tester for CentOS?
> Or how to get this one to work under CentOS?

There is https://github.com/sivel/speedtest-cli
which uses the servers from speedtest.net

BR

-- 
Freundliche Gruesse/Best Regards
Benjamin Hackl

Media FOCUS Research Ges.m.b.H.
Maculangasse 8, 1220 Wien Austria
Tel: +43 1 258 97 01-295
b.ha...@focusmr.com
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Re: [CentOS] Ultrabook for CentOS?

[Johnny Hughes]

On 11/27/2013 07:26 AM, Nux! wrote:
> Hello,
>
> I need to buy an ultrabook. Any recommendations for something that 
> would work out of the box more or less?
> I do not want a Chromebook (or anything ARM) or one of these new 
> "touch" laptops, in fact I'm after a nice matte screen. Budget is 
> modest-ish (£500/$800) so dont go crazy. :)
>
> Thanks!
>

The Lenovo ThinkPad X series all seem to work very well with CentOS/RHEL.



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Re: [CentOS] Ultrabook for CentOS?

[Scott Robbins]

On Wed, Nov 27, 2013 at 02:54:24PM +0100, Fabrizio Di Carlo wrote:
> I have Asus U32U, and CentOS works fine on it ;)
> 
I have the older UX31E, which also works with CentOS.   I _might_ have had
to get a driver from elrepo for wired, but wireless worked out of the box.
It has an ASIX USB to ethernet dongle.

-- 
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Re: [CentOS] CLI speed tester for CentOS?

[Tom Grace]

On 27/11/13 14:02, Timothy Murphy wrote:
> I'd like to run a CLI broadband speed tester on my CentOS server.
> I downloaded "tespeed" from .
> This ran fine under Fedora-19, but failed under CentOS
> with the message "# reject large message",
> although from a quick look at the source
> it did not seem to be using a large test-file.
>
> Does anyone know of an alternative CLI speed-tester for CentOS?
> Or how to get this one to work under CentOS?
>
>

Would you be able to simply wget a file from the Internet, or do you 
need more detail? Something like http://www.cloudtestfiles.net/ might work.
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[CentOS] CLI speed tester for CentOS?

[Timothy Murphy]

I'd like to run a CLI broadband speed tester on my CentOS server.
I downloaded "tespeed" from .
This ran fine under Fedora-19, but failed under CentOS
with the message "# reject large message",
although from a quick look at the source
it did not seem to be using a large test-file.

Does anyone know of an alternative CLI speed-tester for CentOS?
Or how to get this one to work under CentOS?


-- 
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e-mail: gayleard /at/ eircom.net
School of Mathematics, Trinity College, Dublin 2, Ireland


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[CentOS] $300 desktops? Where? - was: died again

[James B. Byrne]

On Tue, November 26, 2013 18:58, Michael Hennebry wrote:

>
> $300 desktops? Where?
>

http://www.ebay.com/itm/HP-Compaq-DC5700-SFF-Desktop-PC-w-Intel-Core-2-E6300-1-86Ghz-2GB-250GB-HDD-/390710754143?pt=Desktop_PCs&hash=item5af82cfb5f

Shipping will probably cost you more that the system but even with that added
the total will likely be less than $200.00.

-- 
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James B. Byrnemailto:byrn...@harte-lyne.ca
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Re: [CentOS] Ultrabook for CentOS?

[Fabrizio Di Carlo]

I have Asus U32U, and CentOS works fine on it ;)


On Wed, Nov 27, 2013 at 2:26 PM, Nux!  wrote:

> Hello,
>
> I need to buy an ultrabook. Any recommendations for something that
> would work out of the box more or less?
> I do not want a Chromebook (or anything ARM) or one of these new
> "touch" laptops, in fact I'm after a nice matte screen. Budget is
> modest-ish (£500/$800) so dont go crazy. :)
>
> Thanks!
>
> --
> Sent from the Delta quadrant using Borg technology!
>
> Nux!
> www.nux.ro
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-- 
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servant. We have created a society that honors the servant and has
forgotten the gift." (A. Einstein)

"La mente intuitiva è un dono sacro e la mente razionale è un fedele servo.
Noi abbiamo creato una società che onora il servo e ha dimenticato il
dono."  (A. Einstein)

Fabrizio Di Carlo
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[CentOS] Ultrabook for CentOS?

[Nux!]

Hello,

I need to buy an ultrabook. Any recommendations for something that 
would work out of the box more or less?
I do not want a Chromebook (or anything ARM) or one of these new 
"touch" laptops, in fact I'm after a nice matte screen. Budget is 
modest-ish (£500/$800) so dont go crazy. :)

Thanks!

-- 
Sent from the Delta quadrant using Borg technology!

Nux!
www.nux.ro
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Re: [CentOS] Filesystem labeling confusion or mess up

[Götz Reinicke - IT Koordinator]

Hi Cliff,

theer is just one path; I rechecked. The storage and server are attached
currently direct with one twinaxial cable and just one ip on each side.

Multipathing was never configured.

I'm confused.

Currently I reattached the targets and reformatted the devices.

in dmesg I just see one sdb and one sdc.

sda is the internal disk and no more disk devices show up e.g. with
fdisk -l.

Any more suggestions or thoughts?

/Götz

Am 26.11.13 23:08, schrieb Cliff Pratt:
> Looks like you have more than one path to the devices. I would expect to
> see *4* devices.
> 
> Cheers,
> 
> Cliff
> 
> 
> On Wed, Nov 27, 2013 at 2:36 AM, Götz Reinicke - IT Koordinator <
> goetz.reini...@filmakademie.de> wrote:
> 
>> Hi,
>>
>> I do have an iscsi storage with two raidsets. I'm logged in to the
>> target and get two devices: /dev/sdb and /dev/sdc.
>>
>> After formatting the devices with ext4 I realised, that I had used a
>> wrong label, so I tried to relabel the devices.
>>
>> But now I'm confused:
>>
>> doing a e2label /dev/sdb or /dev/sdc returns always the same label name
>> for both devices.
>>
>> so I did  "e2label /dev/sdb students" and "e2label /dev/sdc staff" and
>> now mounting the devices shows the same filesystem under sdb and sdc!
>>
>> Looks like sdc (an empty device) is gone...
>>
>>
>> Any suggestions or explanations?
>>
>> Thanks and best regards . Götz
<...>


-- 
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IT-Koordinator

Tel. +49 7141 969 82 420
E-Mail goetz.reini...@filmakademie.de

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