Re: [CentOS] Proper setup for major package removals?

[John R Pierce]

On 10/10/2016 10:56 PM, waltd...@waltdnes.org wrote:

   By the way, at startup, I notice a message quickly flash by like...
"intel_rapl: no valid rapl domains".  What's it about?


some kinda new intel advanced power domain stuff (RAPL is "Running 
Average Power Limit"), to limit CPU power consumption... that message 
just means its not supported by your hardware (or VM), so the intel_rapl 
driver is exiting.  totally harmless albeit mildly annoying.  you can 
blacklist the intel_rapl driver to get rid of it.



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Re: [CentOS] gigE -> 100Mb problems

[Gordon Messmer]

On 10/10/2016 09:31 PM, John R Pierce wrote:


oh. 


Yeah, the entire "net-tools" package is deprecated.  I tend to forget 
which of the two (ethtool or mii-tool) is in that set.


# Avoid using any of these:
$ rpm -ql net-tools
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[CentOS] Proper setup for major package removals?

[waltdnes]

  I've installed CentOS in a QEMU VM for some gcc-compiling work.  I've
used Gentoo for years, but am a newbie at CentOS.  During install, I
selected "development" options, which pulled in more than I really need.
I don't want or need a heavy desktop environment chewing up part of the
4 gigs allocated to the VM, but I will occasionally need a GUI.  What
I'd like to do is remove GDM, Gnome DE, Java, Ruby, and a bunch of other
stuff.  Then install ICEWM.  I want to remove GDM, but keep X, so that
the machine comes up at the text command line.  If/when I need a GUI,
I'll type "startx", after setting up ~/.xinitrc.

  So far, I've made one change to yum.conf, by adding
remove_leaf_only=1

  I think that my next 2 steps should be to execute...
init 3
yum groupremove gnome-desktop

  Then what? "yum search icewm" does not find anything, and I may still
have GDM trying to log me in to a non-existant GNOME.  What do I do
next?

  By the way, at startup, I notice a message quickly flash by like...
"intel_rapl: no valid rapl domains".  What's it about?

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Re: [CentOS] gigE -> 100Mb problems

[John R Pierce]

On 10/10/2016 5:33 PM, John R Pierce wrote:
I've got a pair of identical CentOS 6.7 servers, with SuperMicro 
X8DTE-F motherboards, these have 2 each Intel  82574L ethernet ports.  
The eth0 ports are plugged in with 10' runs of brand new cat 5e cable 
to a Cisco Nexxus 9000 switch (provided by the data center).


These servers keep coming up at 100baseT rather than gigE. I've 
swapped ports and cables with a different server, that server gets 
gigE but these supermicro's are stuck at 100baseT regardless of the 
port or cableused.


'ethtool eth0'  says its gigE, but 'mii-tool -v eth0' says its 
100baseT and doesn't even list gigE as an option, and the cisco 
switches see it as 100baseT too.


anyone else run into anything like this before?


oh.

# mii-tool -v eth0
eth0: negotiated, link ok
  product info: vendor 00:50:43, model 11 rev 1
  basic mode:   autonegotiation enabled
  basic status: autonegotiation complete, link ok
  capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
  advertising:  100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD 
flow-control


# ethtool eth0
Settings for eth0:
Supported ports: [ TP ]
Supported link modes:   10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes:  10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
MDI-X: on (auto)
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x0007 (7)
   drv probe link
Link detected: yes

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Re: [CentOS] CentOS-7-x86_64-GenericCloud.raw very unusual format

[TE Dukes]

> -Original Message-
> From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On
> Behalf Of John R Pierce
> Sent: Monday, October 10, 2016 1:31 PM
> To: centos@centos.org
> Subject: Re: [CentOS] CentOS-7-x86_64-GenericCloud.raw very unusual
> format
> 
> On 10/10/2016 8:28 AM, Aliaksei Sheshka wrote:
> > $
> > wgethttp://cloud.centos.org/centos/7/images/CentOS-7-x86_64-
> GenericClo
> > ud.raw.xz
> > --2016-10-10 11:21:32--
> > http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-
> GenericCloud.r
> > aw.xz Resolving cloud.centos.org (cloud.centos.org)... 162.252.80.138,
> > 2607:1680:0:1::2
> > Connecting to cloud.centos.org
> > (cloud.centos.org)|162.252.80.138|:80... connected.
> > HTTP request sent, awaiting response... 404 Not Found
> > 2016-10-10 11:21:32 ERROR 404: Not Found.
> >
> >
> > As before I'm looking for a raw image, or a tar of the corresponding
> > file system,
> 
> did you look in the directory to see what is there?
> 
> http://cloud.centos.org/centos/7/images/
> 

Hello,

Just a question, what exactly are these images?

I see it mentioned on the CentOS website but not a lot of info on exactly
what it is and what it does.

How does this differ from a CentOS 7 VM installed from an ISO? Are these
just pre-made images?

thanks

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Re: [CentOS] upgrade reference docs

[Leon Fauster]

Am 10.10.2016 um 21:20 schrieb Chuck Campbell :
> Is there a Centos 6.x to Centos 7.x guide somewhere? What has changed, that I 
> need to learn about as an admin, before I jump in and flounder?


https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Migration_Planning_Guide/index.html

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Re: [CentOS] mcrypt on PHP 5.4 and 5.5

[Leon Fauster]

Am 11.10.2016 um 00:19 schrieb H :
> I have Centos 6.8 running on a VPS and upgraded PHP from 5.3 to 5.4 using 
> scl. Unfortunately it seems mcrypt is not available, neither for 5.4 nor for 
> 5.5.
> What have other users done about that? Unfortunately I have an application 
> that requires mcrypt.



SCL package recompiled with mcrypt enabled. 

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[CentOS] gigE -> 100Mb problems

[John R Pierce]

I've got a pair of identical CentOS 6.7 servers, with SuperMicro X8DTE-F 
motherboards, these have 2 each Intel  82574L ethernet ports.  The eth0 
ports are plugged in with 10' runs of brand new cat 5e cable to a Cisco 
Nexxus 9000 switch (provided by the data center).


These servers keep coming up at 100baseT rather than gigE. I've swapped 
ports and cables with a different server, that server gets gigE but 
these supermicro's are stuck at 100baseT regardless of the port or 
cableused.


'ethtool eth0'  says its gigE, but 'mii-tool -v eth0' says its 100baseT 
and doesn't even list gigE as an option, and the cisco switches see it 
as 100baseT too.


anyone else run into anything like this before?




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[CentOS] mcrypt on PHP 5.4 and 5.5

[H]

I have Centos 6.8 running on a VPS and upgraded PHP from 5.3 to 5.4 using scl. 
Unfortunately it seems mcrypt is not available, neither for 5.4 nor for 5.5.

What have other users done about that? Unfortunately I have an application that 
requires mcrypt.

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Re: [CentOS] upgrade reference docs

[Jonathan Billings]

On Mon, Oct 10, 2016 at 02:20:03PM -0500, Chuck Campbell wrote:
> Is there a Centos 6.x to Centos 7.x guide somewhere? What has changed, that
> I need to learn about as an admin, before I jump in and flounder?

This applies to CentOS too:

https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Migration_Planning_Guide/index.html

Just ignore the "How to upgrade" section since it talks about the
tools to upgrade from RHEL6 to RHEL7, which I don't believe is
supported in CentOS.  The other sections are what you want to read. 

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Re: [CentOS] upgrade reference docs

[Götz Reinicke]

> Am 10.10.2016 um 21:58 schrieb Götz Reinicke :
> 
> Hi,
> 
>> Am 10.10.2016 um 21:20 schrieb Chuck Campbell :
>> 
>> Is there a Centos 6.x to Centos 7.x guide somewhere? What has changed, that 
>> I need to learn about as an admin, before I jump in and flounder?
>> 
> 
> may be some hints …:
> 
> http://simplylinuxfaq.blogspot.de/p/major-difference-between-rhel-7-and-6.html
>  
> 
> 
> https://access.redhat.com/sites/default/files/attachments/rhel_5_6_7_cheatsheet_27x36_1014_jcs_web.pdf
>  
> 

and one more …

https://www.ravellosystems.com/blog/rhel7-centos7-linux-distribution/ 


/G
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Re: [CentOS] upgrade reference docs

[Götz Reinicke]

Hi,

> Am 10.10.2016 um 21:20 schrieb Chuck Campbell :
> 
> Is there a Centos 6.x to Centos 7.x guide somewhere? What has changed, that I 
> need to learn about as an admin, before I jump in and flounder?
> 

may be some hints …:

http://simplylinuxfaq.blogspot.de/p/major-difference-between-rhel-7-and-6.html 


https://access.redhat.com/sites/default/files/attachments/rhel_5_6_7_cheatsheet_27x36_1014_jcs_web.pdf
 


cheers . Götz


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[CentOS] upgrade reference docs

[Chuck Campbell]

Is there a Centos 6.x to Centos 7.x guide somewhere? What has changed, that I 
need to learn about as an admin, before I jump in and flounder?



thanks,

-chuck


--
ACCEL Services, Inc.| Specialists in Gravity, Magnetics |  (713)993-0671 ph.
|   and Integrated Interpretation   |  (713)993-0608 fax
448 W. 19th St. #325|Since 1992 |  (713)306-5794 cell
 Houston, TX, 77008 |  Chuck Campbell   | campb...@accelinc.com
|  President & Senior Geoscientist  |

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[CentOS] dictionary on centos

[Valeri Galtsev]

Dear All,

Could someone recommend open source dictionary one can install on CentOS 7?

I have a user who needs Chinese-English dictionary. He downloaded it from
some website in China. My problem is: I neither speak nor read Chinese
(were it English, Russian or German I would be OK), so I can not read the
License agreement, and I can not audit this software (or evaluate somehow
else its sanity). But installing open source Chinese-English dictionary
would solve these my problems (if my user accepts the replacement).

Thanks a lot for your advises!

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] CentOS-7-x86_64-GenericCloud.raw very unusual format

[John R Pierce]

On 10/10/2016 8:28 AM, Aliaksei Sheshka wrote:

$ 
wgethttp://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.raw.xz
--2016-10-10 11:21:32--
http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.raw.xz
Resolving cloud.centos.org (cloud.centos.org)... 162.252.80.138,
2607:1680:0:1::2
Connecting to cloud.centos.org
(cloud.centos.org)|162.252.80.138|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2016-10-10 11:21:32 ERROR 404: Not Found.


As before I'm looking for a raw image, or a tar of the corresponding
file system,


did you look in the directory to see what is there?

http://cloud.centos.org/centos/7/images/



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[CentOS] External monitor support changes.

[Lamar Owen]

I've been working on this issue for quite a while.

Back in January of 2015 I posted about how well external monitors worked 
with the out-of-the-box CentOS 7 ATI radeon drivers and my Dell M6500 
with an ATI FirePro M7820.


At the time the support was seamless and 'Just Worked' without any 
issue.  A few months later, some update came down the pipe and this 
broke completely, with the same projector that had been working fine for 
a while. It just simply quit working.


The docked double monitors still worked fine, and it wasn't a critical 
issue for me, so I kept trying it occasionally to see if it would start 
working again, but it never did.


So last week I upgraded laptops to a Dell Precision M6700 with an nVidia 
card, upon which I immediately installed the ELrepo drivers. The docked 
dual monitors worked fine (used in a triple monitor setup, just like the 
ATI card in the M6500).  So I decided I would try the HDMI port.  Well, 
it did exactly the same thing the M6500 with the ATI card did.


The symptom is that the laptop screen will blank, then come back for a 
bit, then blank for a few seconds then come back; lather, rinse, 
repeat.  The Xorg log shows this:

+
[   239.338] (**) NVIDIA(0): Using HorizSync/VertRefresh ranges from the 
EDID for display
[   239.338] (**) NVIDIA(0): device DELL 7700 (DFP-1) (Using EDID 
frequencies has been

[   239.338] (**) NVIDIA(0): enabled on all display devices.)
[   239.344] (--) NVIDIA(GPU-0): DELL 7700 (DFP-1): connected
[   239.344] (--) NVIDIA(GPU-0): DELL 7700 (DFP-1): Internal TMDS
[   239.344] (--) NVIDIA(GPU-0): DELL 7700 (DFP-1): 165.0 MHz maximum 
pixel clock

[   239.344] (--) NVIDIA(GPU-0):
[   239.459] (II) NVIDIA(0): Setting mode "DP-0: nvidia-auto-select 
@1920x1080 +1920+0 {ViewPortIn=1920x1080, ViewPortOut=1920x1080+0+0}"
[   240.048] (II) NVIDIA(0): Setting mode "LVDS-0: nvidia-auto-select 
@1920x1080 +0+0 {ViewPortIn=1920x1080, ViewPortOut=1920x1080+0+0}, DP-0: 
nvidia-auto-select @1920x1080 +1920+0 {ViewPortIn=1920x1080, 
ViewPortOut=1920x1080+0+0}"

[   240.542] (--) NVIDIA(GPU-0): CRT-0: disconnected
[   240.542] (--) NVIDIA(GPU-0): CRT-0: 400.0 MHz maximum pixel clock
[   240.542] (--) NVIDIA(GPU-0):
[   240.542] (--) NVIDIA(GPU-0): CMN (DFP-0): connected
[   240.542] (--) NVIDIA(GPU-0): CMN (DFP-0): Internal LVDS
[   240.542] (--) NVIDIA(GPU-0): CMN (DFP-0): 330.0 MHz maximum pixel clock
[   240.542] (--) NVIDIA(GPU-0):
[   240.566] (--) NVIDIA(GPU-0): DELL 7700 (DFP-1): connected
[   240.566] (--) NVIDIA(GPU-0): DELL 7700 (DFP-1): Internal TMDS
[   240.566] (--) NVIDIA(GPU-0): DELL 7700 (DFP-1): 165.0 MHz maximum 
pixel clock

+++

The nVidia control panel shows the DELL 7700 coming up, then going away, 
then coming up, then going away.  I hadn't tried the M6500 in a while 
with it, so I'm going to try it again and look at the Xorg log, but my 
recollection is that the symptoms and log were the same.  There isn't 
any error condition reported in the Xorg log; it just doesn't ever 
display anything on the projector.


While I realize that the nvidia drivers are ELrepo packages, the same 
symptoms happened with the M6500's ATI with the stock CentOS 7 ATI 
drivers; it worked beautifully one day, then some updates came, and it 
just quit working, using the same projector, cables, and receiver.  I 
don't recall exactly where in the 7.x cycle this happened, 
unfortunately.  I may give the original 7.0 a whirl then the original 
7.1 a whirl, but I think it started with the 7.2 release.  It could be 
the receiver in the middle, and I'll try a direct cable to the 
projector.  But I tried that with the M6500 and it didn't change anything.


But, again, the docked triple-head configuration works like a champ.

I will perform more testing and update as I find things.

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Re: [CentOS] CentOS-7-x86_64-GenericCloud.raw very unusual format

[Aliaksei Sheshka]

Problem re-appeared again.

At that time I'm unable to download  Cloud Image linked from

https://wiki.centos.org/Download

http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.raw.xz

$ wget 
http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.raw.xz
--2016-10-10 11:21:32--
http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.raw.xz
Resolving cloud.centos.org (cloud.centos.org)... 162.252.80.138,
2607:1680:0:1::2
Connecting to cloud.centos.org
(cloud.centos.org)|162.252.80.138|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2016-10-10 11:21:32 ERROR 404: Not Found.


As before I'm looking for a raw image, or a tar of the corresponding
file system,

Thanks!




On Tue, Mar 29, 2016 at 12:57 PM, Martinx - ジェームズ
 wrote:
>>
>> > Why not a compressed qcow2?
>> >
>> > Like: CentOS-7-x86_64-GenericCloud.qcow2c
>> >
>> > This way, we can add it as-is to OpenStack Glance, that it will be
>> > downloaded by demand, when required and, OpenStack Nova will
>> automatically
>> > uncompress the image for runtime.
>>
>> We do publish a qcow2c, the always updated version ( updated each month
>> end ) is at :
>> http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.qcow2c
>>
>> This is a symlink that points to the latest image. At the moment this is
>> :
>>
>> http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud-1602.qcow2c
>>
>> There will be a 1603 by the end of this week
>>
>>
>> --
>> Karanbir Singh
>> +44-207-0999389 | http://www.karan.org/ | twitter.com/kbsingh
>> GnuPG Key : http://www.karan.org/publickey.asc
>
>
> Sounds awesome! Thanks for sharing the symlink... I'll use it instead..
> Cheers!
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Re: [CentOS] CentOS ISO contents

[Leon Fauster]

Am 10.10.2016 um 13:45 schrieb Johnny Hughes :
> On 10/09/2016 06:15 PM, Leon Fauster wrote:
>> Am 09.10.2016 um 19:41 schrieb John R Pierce :
>>> On 10/9/2016 5:33 AM, Leon Fauster wrote:
>>> 
>>> look in /root  :)anaconda-ks.conf is a generated ks file for
>>> the options you chose during that system's installation.
>> 
>> 
>> :-) I had the creation of a EL6 livemedia in mind ...
>> 
> 
> They live in a different branch:
> 
> http://bit.ly/2dFmXJB


Oh, so close that I haven't seen it. Thank you!

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Re: [CentOS] Desktop for newbies

[Johnny Hughes]

On 09/30/2016 10:19 AM, david wrote:
> Folks
> 
> I'm about to set up a non-root user on a Centos=7 server that I control
> for a friend.  It is in his home, so access is local.  He's a refugee
> from the latest Windows 10 Upgrade.  I'd like a suggestion as to which
> of the several possible graphical desktops to suggest to him and set up
> for him as his default.
> 
> My aim is:
> - Allow him to try out Linux as an end-user
> - Let him start to feel comfortable with the desktop
> - Learn the new idioms for familiar programs and functions
> 
> And later
> - Give him his own system with root privileges.
> 
> Suggestions?
> 
> David

Well, I would set up standard (not classic) GNOME3 and a normal user and
give him root privs via sudo.  And tell him the root password as well.

If you turn on the extensions for Applications (top menu) and show
windows at the bottom, GNOME 3 is close enough from a desktop standpoint
that Windows users can figure everything out as a user.

If you tell him the root password and also setup sudo access .. he can
control everything like users, etc. via the GUI (will ask for the root
password) .. and as he becomes more comfortable with the CLI, he can use
sudo to start things as root from there.

I initially used the Classic skin for gnome3 (and even Mate and/or
Cinnamon for a gnome2 desktop) .. but for me, eventually, the 'Windows
Button' with app search by default in the standard GNOME3 desktop was
the easiest platform for me to use.

Thanks,
Johnny Hughes



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Re: [CentOS] CentOS ISO contents

[Johnny Hughes]

On 10/09/2016 06:15 PM, Leon Fauster wrote:
> Am 09.10.2016 um 19:41 schrieb John R Pierce :
>> On 10/9/2016 5:33 AM, Leon Fauster wrote:
>>> Interesting pointers. Are there somewhere any ks files for EL6?
>>
>> look in /root  :)anaconda-ks.conf is a generated ks file for
>> the options you chose during that system's installation.
> 
> 
> :-) I had the creation of a EL6 livemedia in mind ...
> 

They live in a different branch:

http://bit.ly/2dFmXJB




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