Re: [CentOS] Poor perfmance of bridged interfaces

[Kahlil Hodgson]

If you really need two bridges on the same LAN you will need to turn on STP
and give your interfaces a delay of say 10 seconds on start up. Sorry, cant
remember options to do that.


Kahlil (Kal) Hodgson   GPG: C9A02289
Head of Technology (m) +61 (0) 4 2573 0382
DealMax Pty LtdGitHub: @tartansandal

Suite 1416
401 Docklands Drive
Docklands VIC 3008 Australia

"All parts should go together without forcing.  You must remember that
the parts you are reassembling were disassembled by you.  Therefore,
if you can't get them together again, there must be a reason.  By all
means, do not use a hammer."  -- IBM maintenance manual, 1925

On 13 November 2015 at 08:09, Alexander Dalloz  wrote:

> Am 12.11.2015 um 19:42 schrieb Sergio Belkin:
>
>> [root@localhost ~]# uname -a
>> Linux localhost 3.10.0-123.el7.x86_64 #1 SMP Mon Jun 30 12:09:22 UTC 2014
>> x86_64 x86_64 x86_64 GNU/Linux
>>
>
> First of all: yum update to current!
>
> Alexander
>
>
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Re: [CentOS] Poor perfmance of bridged interfaces

[Alexander Dalloz]

Am 12.11.2015 um 19:42 schrieb Sergio Belkin:

[root@localhost ~]# uname -a
Linux localhost 3.10.0-123.el7.x86_64 #1 SMP Mon Jun 30 12:09:22 UTC 2014
x86_64 x86_64 x86_64 GNU/Linux


First of all: yum update to current!

Alexander

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Re: [CentOS] Poor perfmance of bridged interfaces

[James A. Peltier]

- Original Message -
| Hi,
| 
| I've created a bridge using 2 interfaces and have a lot of messages as
| follows:
| 
| nov 12 15:30:22 localhost kernel: br0: received packet on enp0s3 with own
| address as source address
| nov 12 15:30:22 localhost kernel: br0: received packet on enp0s3 with own
| address as source address
| 
| And the operating systems is extremely slow
| 
| Interfaces files :
| 
| [root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-*
| DEVICE=br0
| TYPE=Bridge
| BOOTPROTO=dhcp
| ONBOOT=yes
| #STP=on
| #DELAY=0
| NM_CONTROLLED=no
| DEVICE=enp0s3
| #HWADDR=08:00:27:AB:1D:E6
| BOOTPROTO=none
| ONBOOT=yes
| NM_CONTROLLED=no
| BRIDGE=br0
| 
| DEVICE=enp0s8
| HWADDR=08:00:27:A3:98:E6
| BOOTPROTO=none
| ONBOOT=yes
| NM_CONTROLLED=no
| BRIDGE=br0
| DEVICE=lo
| TYPE=loopback
| IPADDR=127.0.0.1
| NETMASK=255.0.0.0
| NETWORK=127.0.0.0
| # If you're having problems with gated making 127.0.0.0/8 a martian,
| # you can change this to something else (255.255.255.255, for example)
| BROADCAST=127.255.255.255
| ONBOOT=yes
| NAME=loopback
| 
| I've disabled NetworkManager, but problem persists.
| 
| System is:
| 
| [root@localhost ~]# uname -a
| Linux localhost 3.10.0-123.el7.x86_64 #1 SMP Mon Jun 30 12:09:22 UTC 2014
| x86_64 x86_64 x86_64 GNU/Linux
| 
| And is virtualized on VirtualBox
| 
| Please could you help me to fix it?
| 
| Thanks in advance!
| 
| --
| --
| Sergio Belkin
| LPIC-2 Certified - http://www.lpi.org

You have a bridge with two interfaces on the same lan?  You're likely creating 
the topology loop with this configuration.  What is it that you're attempting 
to do here?


-- 
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Simon Fraser University - Burnaby Campus
Phone   : 604-365-6432
Fax : 778-782-3045
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Re: [CentOS] Poor perfmance of bridged interfaces

[John R Pierce]

On 11/12/2015 10:42 AM, Sergio Belkin wrote:

DEVICE=enp0s8
HWADDR=08:00:27:A3:98:E6
BOOTPROTO=none
ONBOOT=yes
NM_CONTROLLED=no
BRIDGE=br0
DEVICE=lo
TYPE=loopback
IPADDR=127.0.0.1
NETMASK=255.0.0.0
NETWORK=127.0.0.0
...


I hope thats two seperate files, ifcfg-enp0s8 and ifcfg-lo ... otherwise,
why is a bridged physical interface configured to be loopback?!?

mine looks like...


# cat ifcfg-br0
DEVICE=br0
TYPE=Bridge
ONBOOT=yes
NM_CONTROLLED=no
BOOTPROTO=none
NETWORK=
NETMASK=255.255.255.240
IPADDR=.  (its a static IP)
GATEWAY=

# cat ifcfg-eth0
DEVICE=eth0
HWADDR=D8:D3:85:B5:8C:6A
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=no
BRIDGE=br0

# cat ifcfg-lo
DEVICE=lo
IPADDR=127.0.0.1
NETMASK=255.0.0.0
NETWORK=127.0.0.0
# If you're having problems with gated making 127.0.0.0/8 a martian,
# you can change this to something else (255.255.255.255, for example)
BROADCAST=127.255.255.255
ONBOOT=yes
NAME=loopback

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Re: [CentOS] Poor perfmance of bridged interfaces

[Gordon Messmer]

On 11/12/2015 10:42 AM, Sergio Belkin wrote:

DEVICE=enp0s3
#HWADDR=08:00:27:AB:1D:E6
BOOTPROTO=none
ONBOOT=yes
NM_CONTROLLED=no
BRIDGE=br0



DEVICE=enp0s8
HWADDR=08:00:27:A3:98:E6
BOOTPROTO=none
ONBOOT=yes
NM_CONTROLLED=no
BRIDGE=br0


Do you have those two devices connected to the same LAN?


I've disabled NetworkManager, but problem persists.


Why would that matter, when all of your interfaces are NM_CONTROLLED=no?

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Re: [CentOS] Poor perfmance of bridged interfaces

[Sergio Belkin]

2015-11-12 16:51 GMT-03:00 Gordon Messmer :

> On 11/12/2015 10:42 AM, Sergio Belkin wrote:
>
>> DEVICE=enp0s3
>> #HWADDR=08:00:27:AB:1D:E6
>> BOOTPROTO=none
>> ONBOOT=yes
>> NM_CONTROLLED=no
>> BRIDGE=br0
>>
>
> DEVICE=enp0s8
>> HWADDR=08:00:27:A3:98:E6
>> BOOTPROTO=none
>> ONBOOT=yes
>> NM_CONTROLLED=no
>> BRIDGE=br0
>>
>
> Do you have those two devices connected to the same LAN?
>


Yes I have.


>
> I've disabled NetworkManager, but problem persists.
>>
>
> Why would that matter, when all of your interfaces are NM_CONTROLLED=no?



Only as a last desesperate resource after hours of trying and not working :(


>
>
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-- 
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Re: [CentOS] Poor perfmance of bridged interfaces

[Gordon Messmer]

On 11/12/2015 12:00 PM, Sergio Belkin wrote:

2015-11-12 16:51 GMT-03:00 Gordon Messmer :
Do you have those two devices connected to the same LAN? 

Yes I have.


Well, that will create a switch loop and flood the LAN with broadcast 
traffic.


We can probably offer better advice if you tell us what you're trying to 
accomplish.  For now, just remove one of the two bridged interfaces.


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Re: [CentOS-es] [VirtualBox] Hacerlo parte de mi red ?

[Oscar Osta Pueyo]

Hola,
Pienso lo mismo, KVM y virt-manager pueden ser una mejor solución.

Opino que:
1. Los paquetes estén en el repositorio principal, no depende de terceros a
CentOS y tienes actualizaciones de seguridad con yum.
2. Puedes acceder por ssh al server y administrar las máquinas virtuales.
3. Si usas linux como equipo de trabajo, puedes instalarte virt-manager y
acceder a la administración de las vm.

No estoy seguro, pero leí en algún sitio que se puede convertir el disco
virtual de una máquina virtual cread en virtualBox a KVM.

Saludos,

2015-11-12 9:19 GMT+01:00 Alex ( Servtelecom ) 
:

> Hola
> Teniendo kvm que va mil veces mejor y que tiene la opción de iniciar
> maquinas virtuales al iniciar el sistema... Para que utilizar virtualbox
> para producción... Yo virtualbox lo utilizo solo para lab y nunca para
> producción...
> Saludos
>
>
>
> > El 12 nov 2015, a las 3:26, angel jauregui 
> escribió:
> >
> > Buen dia.
> >
> > Muchisimas gracias a todos por sus consejos, lo he puesto como *Bridge*,
> y
> > pude obtener IP por mi DHCP :D.
> >
> > Ahora el problema que tengo es que, no se inicia la Maquina Virtual desde
> > */etc/rc.local* :(.
> >
> > De hecho me logie como *root*, y la inicie manualmente:
> >
> > shell# VBoxManage startvm Win7
> > Waiting for VM "Win7" to power on...
> > VM "Win7" has been successfully started.
> >
> > Pero en realidad *no inicia* porque al hacer ping a la IP Fija que le
> > asigno por DHCP al servidor Win7, no responde nunca :(
> >
> > En cambio si me conecto via VNC al servidor CentOS, inicio visualmente el
> > VirtualBox y prendo la Maquina Virtual, ya que inicio Win7, veo que en la
> > otra consola el PING responde.
> >
> > Saludos !
> >
> > 2015-11-11 8:38 GMT-06:00 Death User :
> >
> >> 2015-11-10 20:51 GMT-05:00 angel jauregui :
> >>
> >>> Sabes de algun link o recomendacion para CentOS en el proceso ?
> >>
> >>
> >> https://www.virtualbox.org/manual/ch06.html
> >> https://wiki.centos.org/HowTos/Virtualization/VirtualBox
> >>
> >>
> http://catlingmindswipe.blogspot.com/2012/06/how-to-virtualbox-networking-part-two.html
> >>
> >> STFW ;)
> >>
> >> bye
> >> ;)
> >> ___
> >> CentOS-es mailing list
> >> CentOS-es@centos.org
> >> https://lists.centos.org/mailman/listinfo/centos-es
> >
> >
> >
> > --
> > M.S.I. Angel Haniel Cantu Jauregui.
> >
> > Celular: (011-52-1)-899-871-17-22
> > E-Mail: angel.ca...@sie-group.net
> > Web: http://www.sie-group.net/
> > Cd. Reynosa Tamaulipas.
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Re: [CentOS-es] [VirtualBox] Hacerlo parte de mi red ?

[Alex ( Servtelecom )]

Hola
Teniendo kvm que va mil veces mejor y que tiene la opción de iniciar maquinas 
virtuales al iniciar el sistema... Para que utilizar virtualbox para 
producción... Yo virtualbox lo utilizo solo para lab y nunca para producción...
Saludos



> El 12 nov 2015, a las 3:26, angel jauregui  escribió:
> 
> Buen dia.
> 
> Muchisimas gracias a todos por sus consejos, lo he puesto como *Bridge*, y
> pude obtener IP por mi DHCP :D.
> 
> Ahora el problema que tengo es que, no se inicia la Maquina Virtual desde
> */etc/rc.local* :(.
> 
> De hecho me logie como *root*, y la inicie manualmente:
> 
> shell# VBoxManage startvm Win7
> Waiting for VM "Win7" to power on...
> VM "Win7" has been successfully started.
> 
> Pero en realidad *no inicia* porque al hacer ping a la IP Fija que le
> asigno por DHCP al servidor Win7, no responde nunca :(
> 
> En cambio si me conecto via VNC al servidor CentOS, inicio visualmente el
> VirtualBox y prendo la Maquina Virtual, ya que inicio Win7, veo que en la
> otra consola el PING responde.
> 
> Saludos !
> 
> 2015-11-11 8:38 GMT-06:00 Death User :
> 
>> 2015-11-10 20:51 GMT-05:00 angel jauregui :
>> 
>>> Sabes de algun link o recomendacion para CentOS en el proceso ?
>> 
>> 
>> https://www.virtualbox.org/manual/ch06.html
>> https://wiki.centos.org/HowTos/Virtualization/VirtualBox
>> 
>> http://catlingmindswipe.blogspot.com/2012/06/how-to-virtualbox-networking-part-two.html
>> 
>> STFW ;)
>> 
>> bye
>> ;)
>> ___
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>> CentOS-es@centos.org
>> https://lists.centos.org/mailman/listinfo/centos-es
> 
> 
> 
> -- 
> M.S.I. Angel Haniel Cantu Jauregui.
> 
> Celular: (011-52-1)-899-871-17-22
> E-Mail: angel.ca...@sie-group.net
> Web: http://www.sie-group.net/
> Cd. Reynosa Tamaulipas.
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Re: [CentOS] Rsync and differential Backups

[Benjamin Smith]

I did exactly this with ZFS on Linux and cut over 24 hours of backup lag to 
just minutes. 

If you're managing data at scale, ZFS just rocks... 


On Tuesday, November 10, 2015 01:16:28 PM Warren Young wrote:
> On Nov 10, 2015, at 8:46 AM, Gordon Messmer  
wrote:
> > On 11/09/2015 09:22 PM, Arun Khan wrote:
> >> You can use "newer" options of the find command and pass the file list
> > 
> > the process you described is likely to miss files that are modified while
> > "find" runs.
> Well, be fair, rsync can also miss files if files are changing while the
> backup occurs.  Once rsync has passed through a given section of the tree,
> it will not see any subsequent changes.
> 
> If you need guaranteed-complete filesystem-level snapshots, you need to be
> using something at the kernel level that can atomically collect the set of
> modified blocks/files, rather than something that crawls the tree in user
> space.
> 
> On the BSD Now podcast, they recently told a war story about moving one of
> the main FreeBSD servers to a new data center.  rsync was taking 21 hours
> in back-to-back runs purely due to the amount of files on that server,
> which gave plenty of time for files to change since the last run.
> 
> Solution?  ZFS send:
> 
>   http://128bitstudios.com/2010/07/23/fun-with-zfs-send-and-receive/
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[CentOS] CentOS-announce Digest, Vol 129, Issue 5

[centos-announce-request]

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centos-annou...@centos.org

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When replying, please edit your Subject line so it is more specific
than "Re: Contents of CentOS-announce digest..."


Today's Topics:

   1. Announcing release for Vagrant 1.7.4 on CentOSLinux 7 x86_64
  SCL (Honza Horak)


--

Message: 1
Date: Wed, 11 Nov 2015 18:10:30 +0100
From: Honza Horak 
To: centos-annou...@centos.org
Subject: [CentOS-announce] Announcing release for Vagrant 1.7.4 on
CentOS  Linux 7 x86_64 SCL
Message-ID: <56437686.6090...@redhat.com>
Content-Type: text/plain; charset=utf-8; format=flowed

I am pleased to announce the immediate availability of Vagrant 1.7.4 on 
CentOS Linux 7 x86_64, delivered via a Software Collection (SCL) built 
by the SCLo Special Interest Group 
(https://wiki.centos.org/SpecialInterestGroup/SCLo).

QuickStart
--
You can get started in three easy steps:
   $ sudo yum install centos-release-scl
   $ sudo yum install sclo-vagrant1
   $ scl enable sclo-vagrant1 bash

At this point you should be able to use vagrant just as a normal
application. An example work-flow might be:
   $ vagrant init centos/7
   $ vagrant up
   $ vagrant ssh

In order to view the individual components included in this
collection, including additional vagrant plugins, you can run :
   $ sudo yum list sclo-vagrant\*

About Software Collections
--
Software Collections give you the power to build, install, and use 
multiple versions of software on the same system, without affecting 
system-wide installed packages. Each collection is delivered as a group 
of RPMs, with the grouping being done using the name of the collection 
as a prefix of all packages that are part of the software collection.

The collection sclo-vagrant1 delivers a Vagrant tool in version 1.x that 
allows to create and configure virtual development environments. Some of 
the most common plugins are also included in the collection as RPMs.

The sclo-vagrant1 collection relies on the following additional 
collections which will also be installed: rh-ruby22, rh-ror41

For more on the Vagrant tool and other plugins, see 
https://www.vagrantup.com.

The SCLo SIG in CentOS
--
The Software Collections SIG group is an open community group 
co-ordinating the development of the SCL technology, and helping curate 
a reference set of collections. In addition to the Vagrant collection 
being released here, we also build and deliver databases, web servers, 
and language stacks including multiple versions of PostgreSQL, MariaDB, 
Apache HTTP Server, Ruby, NodeJS, Python and others.

Software Collections SIG release was announced at 
https://lists.centos.org/pipermail/centos-announce/2015-October/021446.html

You can learn more about Software Collections concepts at: 
http://softwarecollections.org/
You can find information on the SIG at 
https://wiki.centos.org/SpecialInterestGroup/SCLo ; this includes howto 
get involved and help with the effort.

We meet every Wednesday at 16:00 UTC in #centos-devel (ref: 
https://www.centos.org/community/calendar), for an informal open forum 
open to anyone who might have comments, concerns or wants to get started 
with SCL's in CentOS.

Enjoy!

Honza
SCLo SIG member


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[CentOS] MariaDB 10.X Master-Slave Replication

[melkor.kp]

Hi,

I am configuring master-slave replication in a MariaDB 10.X over Centos 7.1
and I am having some troubles.

When I configure the slave I use the following directies in my.cnf:

...
master-host = 192.168.122.2
master-user = slave_user
master-password = qwerty
master-connect-retry= 60
...

But is seems that the daemon doesn't like them and it refuses to start.

Does anybody know if those directives have been removed on that version?

Setting up them with the following mysql commands inside works.

mysql> slave stop;
mysql> CHANGE MASTER TO MASTER_HOST='*192.168.122.2*',
MASTER_USER='*slave_user*', MASTER_PASSWORD='*qwerty*',
MASTER_LOG_FILE='*mysql-bin.03*', MASTER_LOG_POS=*11128001*;
mysql> slave start;
mysql> show slave status\G;


Cheers,
Roberto Nebot
-- 
It's a dangerous business, Frodo, going out your door. You step onto the
road, and if you don't keep your feet, there's no knowing where you might
be swept off to.

Bilbo Baggins.

http://vanishedintheshell.apsila.org

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Re: [CentOS] About IPv6 Link-Local Address(CentOS5)

[米山陽介]

> The current version of Centos 5, is 5.11
>
> An immediate upgrade is recommeneded.

Thanks for the response.

I have updated CentOS5 to 11.
However, It did not resolve

On 2015/11/12 23:05, Always Learning wrote:


On Thu, 2015-11-12 at 14:57 +0900, 米山陽介 wrote:



I am using the CentOS5.7.


The current version of Centos 5, is 5.11

An immediate upgrade is recommeneded.



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[CentOS] Fresh installation using usb

[Siva Prasad Nath]

​
 20151113_123827.mp4

​We are using R630. Do you think it is better to install from DVD?
Few times I waited for a long time. Bar was not moving in the screen.
Please refer to the video.

On Friday, November 13, 2015, Eero Volotinen  wrote:

> what is model of your poweredge server? did you wait some minutes after
> error message?
>
> --
> Eero
>
> 2015-11-13 7:35 GMT+02:00 Siva Prasad Nath :
>
> > Hi,
> > I am trying to install Centos 7 on Dell poweredge server. It prompts
> i8042
> > controller not found. After that screen was not moving.
> >
> > With regards,
> > Shiva
> >
> >
> > --
> >
> > Shiva Prasad Nath
> > 92981134
> > ___
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Re: [CentOS-virt] CentOS 6 Xen package update (including XSA-156)

[Manuel Wolfshant]

On 11/12/2015 04:00 PM, George Dunlap wrote:

To update to the new repository structure, install the
centos-release-xen package directly from the new repo:

  yum 
updatehttp://mirror.centos.org/centos/6/virt/x86_64/xen/centos-release-xen-7-11.el6.x86_64.rpm

This should replace the xen4 repositories with the new virt sig


[root@xenh4bis ~]# yum update -y 
http://mirror.centos.org/centos/6/virt/x86_64/xen/centos-release-xen-7-11.el6.x86_64.rpm

Loaded plugins: fastestmirror, presto
Setting up Update Process
centos-release-xen-7-11.el6.x86_64.rpm | 6.0 kB 00:00
Examining 
/var/tmp/yum-root-DzSL_q/centos-release-xen-7-11.el6.x86_64.rpm: 
10:centos-release-xen-7-11.el6.x86_64
Marking /var/tmp/yum-root-DzSL_q/centos-release-xen-7-11.el6.x86_64.rpm 
as an update to 10:centos-release-xen-6-4.el6.centos.x86_64

Loading mirror speeds from cached hostfile
 * epel: fedora.mirrors.telekom.ro
base |  951 B 00:00
updates |  951 B 00:00
Resolving Dependencies
--> Running transaction check
---> Package centos-release-xen.x86_64 10:6-4.el6.centos will be updated
---> Package centos-release-xen.x86_64 10:7-11.el6 will be an update
--> Processing Dependency: 
/etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Virtualization for package: 
10:centos-release-xen-7-11.el6.x86_64
--> Processing Dependency: 
/etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Virtualization for package: 
10:centos-release-xen-7-11.el6.x86_64

--> Finished Dependency Resolution
Error: Package: 10:centos-release-xen-7-11.el6.x86_64 
(/centos-release-xen-7-11.el6.x86_64)

   Requires: /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Virtualization
 You could try using --skip-broken to work around the problem
 You could try running: rpm -Va --nofiles --nodigest

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[CentOS-virt] CentOS 6 Xen package update (including XSA-156)

[George Dunlap]

So going forward, we're moving the CentOS 6 Xen packages from the
custom "xen4" repos that were introduced several years ago, to repos
based on its position as a sub-project of the Virt Sig.  That will
make things consistent between all the sigs, as well as between CentOS
6 and 7 Xen packages.

Unfortunately, XSA-156 came up rather suddenly and is a bit blocked by
this transition.

So please help us test the new repository structure, so that we can
with conscience push the updates to xen4 users in general.

To update to the new repository structure, install the
centos-release-xen package directly from the new repo:

 yum update 
http://mirror.centos.org/centos/6/virt/x86_64/xen/centos-release-xen-7-11.el6.x86_64.rpm

This should replace the xen4 repositories with the new virt sig
repositories.  Now do a 'yum update':

yum update

This should pull in the Xen 4.4.3-6 package, which contains XSA-156
(and all other packages).

If everything works as planned, we'll push the new centos-release-xen
to centos-extras, and then everyone else will be moved to the new
repos the next time they do an update.

 -George
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Re: [CentOS] About IPv6 Link-Local Address(CentOS5)

[Always Learning]

On Thu, 2015-11-12 at 14:57 +0900, 米山陽介 wrote:


> I am using the CentOS5.7.

The current version of Centos 5, is 5.11

An immediate upgrade is recommeneded.



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[CentOS] Shorewall and the latest kernel problem

[Pete Geenhuizen]

I just installed the latest kernel 2.6.32-573.8.1.el6.x86_64 and when I 
rebooted it shorewall (shorewall-4.5.4-1.el6.noarch) failed with the 
following error


ERROR: a non-empty masq file requires NAT in your kernel and iptables 
/etc/shorewall/masq (line 15)


Question is is this a problem in the kernel or is it a problem in 
Shorewall?


Booting the previous kernel allowed shorewall to start normally.

Any one else seen this error, if so what's the fix?

Any help would be greatly appreciated.

Pete

--
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Re: [CentOS-virt] CentOS 6 Xen package update (including XSA-156)

[George Dunlap]

On Thu, Nov 12, 2015 at 2:03 PM, Manuel Wolfshant
 wrote:
> On 11/12/2015 04:00 PM, George Dunlap wrote:
>>
>> To update to the new repository structure, install the
>> centos-release-xen package directly from the new repo:
>>
>>   yum
>> updatehttp://mirror.centos.org/centos/6/virt/x86_64/xen/centos-release-xen-7-11.el6.x86_64.rpm
>>
>> This should replace the xen4 repositories with the new virt sig
>
>
> [root@xenh4bis ~]# yum update -y
> http://mirror.centos.org/centos/6/virt/x86_64/xen/centos-release-xen-7-11.el6.x86_64.rpm
> Loaded plugins: fastestmirror, presto
> Setting up Update Process
> centos-release-xen-7-11.el6.x86_64.rpm | 6.0 kB 00:00
> Examining /var/tmp/yum-root-DzSL_q/centos-release-xen-7-11.el6.x86_64.rpm:
> 10:centos-release-xen-7-11.el6.x86_64
> Marking /var/tmp/yum-root-DzSL_q/centos-release-xen-7-11.el6.x86_64.rpm as
> an update to 10:centos-release-xen-6-4.el6.centos.x86_64
> Loading mirror speeds from cached hostfile
>  * epel: fedora.mirrors.telekom.ro
> base |  951 B 00:00
> updates |  951 B 00:00
> Resolving Dependencies
> --> Running transaction check
> ---> Package centos-release-xen.x86_64 10:6-4.el6.centos will be updated
> ---> Package centos-release-xen.x86_64 10:7-11.el6 will be an update
> --> Processing Dependency:
> /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Virtualization for package:
> 10:centos-release-xen-7-11.el6.x86_64
> --> Processing Dependency:
> /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Virtualization for package:
> 10:centos-release-xen-7-11.el6.x86_64
> --> Finished Dependency Resolution
> Error: Package: 10:centos-release-xen-7-11.el6.x86_64
> (/centos-release-xen-7-11.el6.x86_64)
>Requires: /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-Virtualization
>  You could try using --skip-broken to work around the problem
>  You could try running: rpm -Va --nofiles --nodigest

Do you have the centos-extras repo enabled?  The key in question is in
the centos-release-virt-common package, which is in the centos-extras
repo.

 -George
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Re: [CentOS] Fresh installation using usb

[Eero Volotinen]

what is model of your poweredge server? did you wait some minutes after
error message?

--
Eero

2015-11-13 7:35 GMT+02:00 Siva Prasad Nath :

> Hi,
> I am trying to install Centos 7 on Dell poweredge server. It prompts i8042
> controller not found. After that screen was not moving.
>
> With regards,
> Shiva
>
>
> --
>
> Shiva Prasad Nath
> 92981134
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>
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Re: [CentOS] About IPv6 Link-Local Address(CentOS5)

[米山陽介]

> Try
>
>ping6 -I eth1 2000:8000:12:6:192:168:11:8

Thanks for the response.

I tried.
However, It did not resolve

# ping6 -I eth1 2000:8000:12:6:192:168:11:8
PING 2000:8000:12:6:192:168:11:8(2000:8000:12:6:192:168:11:8) from 
fe80::a00:27ff:fe03:5b8a eth1: 56 data bytes


On 2015/11/13 2:22, Paul Heinlein wrote:

On Thu, 12 Nov 2015, 米山陽介 wrote:


Hello

Because I did not send , and then retransmitted.

I am using the CentOS5.7.
In a state where the link down, I did a ping to the IPv4 and IPv6.
IPv4 succeeds in ping. but, IPv6 is ping fails.
Once confirmed by ifconfig, it did not have a Link-Local Address.
At link down, Is the Link-Local Address not set?
Leave the link down, Is there a way to avoid this?

# ethtool eth1
Settings for eth1:
～
   Link detected: no

# ifconfig eth1
eth1  Link encap:Ethernet  HWaddr 08:00:27:83:74:54
 inet addr:192.168.11.8  Bcast:192.168.11.255  Mask:255.255.255.0
 inet6 addr: 2000:8000:12:6:192:168:11:8/64 Scope:Global
 UP BROADCAST MULTICAST  MTU:1500  Metric:1
 RX packets:786 errors:0 dropped:0 overruns:0 frame:0
 TX packets:289 errors:0 dropped:0 overruns:0 carrier:0
 collisions:0 txqueuelen:1000
 RX bytes:81093 (79.1 KiB)  TX bytes:46507 (45.4 KiB)

# ping 192.168.11.8
PING 192.168.11.8 (192.168.11.8) 56(84) bytes of data.
64 bytes from 192.168.11.8: icmp_seq=1 ttl=64 time=0.033 ms
64 bytes from 192.168.11.8: icmp_seq=2 ttl=64 time=0.019 ms
～

# ping6 2000:8000:12:6:192:168:11:8
PING 2000:8000:12:6:192:168:11:8(2000:8000:12:6:192:168:11:8) 56 data
bytes


Try

   ping6 -I eth1 2000:8000:12:6:192:168:11:8



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 株式会社デージーネット
  フロンティア開発部
米山  陽介
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Re: [CentOS] MariaDB 10.X Master-Slave Replication

[Eliezer Croitoru]

Try:
maria-disc...@lists.launchpad.net

They should have a very clear answer.
Also have you tried this:
https://mariadb.com/kb/en/+search/?q=replication=1=kb=Search
https://mariadb.com/kb/en/mariadb/setting-up-replication/

All The Bests,
Eliezer

On 12/11/2015 13:09, melkor.kp wrote:

Hi,

I am configuring master-slave replication in a MariaDB 10.X over Centos 7.1
and I am having some troubles.

When I configure the slave I use the following directies in my.cnf:

...
master-host = 192.168.122.2
master-user = slave_user
master-password = qwerty
master-connect-retry= 60
...

But is seems that the daemon doesn't like them and it refuses to start.

Does anybody know if those directives have been removed on that version?

Setting up them with the following mysql commands inside works.

mysql> slave stop;
mysql> CHANGE MASTER TO MASTER_HOST='*192.168.122.2*',
MASTER_USER='*slave_user*', MASTER_PASSWORD='*qwerty*',
MASTER_LOG_FILE='*mysql-bin.03*', MASTER_LOG_POS=*11128001*;
mysql> slave start;
mysql> show slave status\G;


Cheers,
Roberto Nebot



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[CentOS] Fresh installation using usb

[Siva Prasad Nath]

Hi,
I am trying to install Centos 7 on Dell poweredge server. It prompts i8042
controller not found. After that screen was not moving.

With regards,
Shiva


-- 

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92981134
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Re: [CentOS-virt] CentOS 6 Xen package update (including XSA-156)

[Manuel Wolfshant]

On 12 noiembrie 2015 16:44:55 EET, George Dunlap  wrote:

>Do you have the centos-extras repo enabled?  The key in question is in
>the centos-release-virt-common package, which is in the centos-extras
>repo.
>
> -George
no, i normally keep everything but base,updates (and xen4centos on xen 
machines) disabled. I will retry later today.
Thanks

  wolfy

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Re: [CentOS] Shorewall and the latest kernel problem

[Marcelo Ricardo Leitner]

Em 12-11-2015 11:12, Pete Geenhuizen escreveu:

I just installed the latest kernel 2.6.32-573.8.1.el6.x86_64 and when I
rebooted it shorewall (shorewall-4.5.4-1.el6.noarch) failed with the
following error

ERROR: a non-empty masq file requires NAT in your kernel and iptables
/etc/shorewall/masq (line 15)

Question is is this a problem in the kernel or is it a problem in
Shorewall?

Booting the previous kernel allowed shorewall to start normally.

Any one else seen this error, if so what's the fix?


That points to something different in kernel. What is your 'previous' 
kernel? Sounds like the nat modules aren't being loaded, for some reason.


  Marcelo

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[CentOS-announce] Announcing release for Ruby 1.9.3, 2.0.0, 2.2 and Ruby on Rails 3.2, 4.0, 4.1 on CentOS Linux 7 x86_64 SCL

[Honza Horak]

I am pleased to announce the immediate availability of Ruby in versions 
1.9.3, 2.0.0, and 2.2, and Ruby on Rails in versions 3.2, 4.0 and 4.1 on 
CentOS Linux 7 x86_64, delivered via a Software Collection (SCL) built 
by the SCLo Special Interest Group 
(https://wiki.centos.org/SpecialInterestGroup/SCLo).


QuickStart
--
You can get started in three easy steps (example of Ruby 2.2 and Ruby on 
Rails 4.1, for others use particular collection names instead):

  $ sudo yum install centos-release-scl
  $ sudo yum install rh-ruby22 rh-ror41
  $ scl enable rh-ruby22 bash

At this point you should be able to use ruby just as a normal
application. An examples of commands run might be:
  $ ruby my-app.rb
  $ gem install activeresource
  $ bundle

In order to view the individual components included in this
collection, including additional rubygems plugins, you can run:
  $ sudo yum list rh-ruby22\* rh-ror41\*

The rh-ror41 collection relies on the rh-ruby22 collection and the ror40 
collection relies on the ruby200 collection, so the Ruby collections 
will be also installed when the Ruby on Rails collection is installed.


About Software Collections
--
Software Collections give you the power to build, install, and use 
multiple versions of software on the same system, without affecting 
system-wide installed packages. Each collection is delivered as a group 
of RPMs, with the grouping being done using the name of the collection 
as a prefix of all packages that are part of the software collection.


The collection rh-ruby22 delivers bundler and Ruby interpreter in 
version 2.2, while the collection rh-ror41 delivers Ruby on Rails 
framework in version 4.1 that allows to create and run applications in 
Ruby or Ruby on Rails framework.


The collection ruby200 delivers only the Ruby interpreter in version 
2.0.0, while the ror40 collection delivers Ruby on Rails framework in 
versoin 4.0 and bundler.


The collection ruby193 delivers Ruby interpreter in version 1.9.3, 
bundler and Ruby on Rails framework in version 3.2.


Some of the most common rubygems are also included in the collections as 
RPMs, the rest may be installed using bundler or gem tools.


For more on the Ruby and Ruby on Rails, see https://www.ruby-lang.org, 
http://rubyonrails.org or https://rubygems.org.


The SCLo SIG in CentOS
--
The Software Collections SIG group is an open community group 
co-ordinating the development of the SCL technology, and helping curate 
a reference set of collections. In addition to the Ruby and Ruby on 
Rails collections being released here, we also build and deliver 
databases, web servers, and language stacks including multiple versions 
of PostgreSQL, MariaDB, Apache HTTP Server, NodeJS, Python and others.


Software Collections SIG release was announced at 
https://lists.centos.org/pipermail/centos-announce/2015-October/021446.html


You can learn more about Software Collections concepts at: 
http://softwarecollections.org
You can find information on the SIG at 
https://wiki.centos.org/SpecialInterestGroup/SCLo ; this includes howto 
get involved and help with the effort.


We meet every Wednesday at 16:00 UTC in #centos-devel (ref: 
https://www.centos.org/community/calendar), for an informal open forum 
open to anyone who might have comments, concerns or wants to get started 
with SCL's in CentOS.


Enjoy!

Honza
SCLo SIG member

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Re: [CentOS] About IPv6 Link-Local Address(CentOS5)

[Paul Heinlein]

On Thu, 12 Nov 2015, 米山陽介 wrote:


Hello

Because I did not send , and then retransmitted.

I am using the CentOS5.7.
In a state where the link down, I did a ping to the IPv4 and IPv6.
IPv4 succeeds in ping. but, IPv6 is ping fails.
Once confirmed by ifconfig, it did not have a Link-Local Address.
At link down, Is the Link-Local Address not set?
Leave the link down, Is there a way to avoid this?

# ethtool eth1
Settings for eth1:
〜
   Link detected: no

# ifconfig eth1
eth1  Link encap:Ethernet  HWaddr 08:00:27:83:74:54
 inet addr:192.168.11.8  Bcast:192.168.11.255  Mask:255.255.255.0
 inet6 addr: 2000:8000:12:6:192:168:11:8/64 Scope:Global
 UP BROADCAST MULTICAST  MTU:1500  Metric:1
 RX packets:786 errors:0 dropped:0 overruns:0 frame:0
 TX packets:289 errors:0 dropped:0 overruns:0 carrier:0
 collisions:0 txqueuelen:1000
 RX bytes:81093 (79.1 KiB)  TX bytes:46507 (45.4 KiB)

# ping 192.168.11.8
PING 192.168.11.8 (192.168.11.8) 56(84) bytes of data.
64 bytes from 192.168.11.8: icmp_seq=1 ttl=64 time=0.033 ms
64 bytes from 192.168.11.8: icmp_seq=2 ttl=64 time=0.019 ms
〜

# ping6 2000:8000:12:6:192:168:11:8
PING 2000:8000:12:6:192:168:11:8(2000:8000:12:6:192:168:11:8) 56 data bytes


Try

  ping6 -I eth1 2000:8000:12:6:192:168:11:8

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Re: [CentOS] Shorewall and the latest kernel problem

[Александр Кириллов]

I just installed the latest kernel 2.6.32-573.8.1.el6.x86_64 and when
I rebooted it shorewall (shorewall-4.5.4-1.el6.noarch) failed with the
following error

ERROR: a non-empty masq file requires NAT in your kernel and iptables
/etc/shorewall/masq (line 15)


FYI

I have the same kernel (2.6.32-573.8.1.el6.x86_64) and shorewall 
(shorewall-4.5.4-1.el6.noarch) versions and non-empty 
/etc/shorewall/masq here and do not see this problem.


Try as root: service shorewall restart.

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Re: [CentOS] Shorewall and the latest kernel problem

[Pete Geenhuizen]

On 11/12/15 10:46, Marcelo Ricardo Leitner wrote:

Em 12-11-2015 11:12, Pete Geenhuizen escreveu:

That points to something different in kernel. What is your 'previous' 
kernel? Sounds like the nat modules aren't being loaded, for some reason.


  Marcelo

Marcelo,
Thanks for the input, it works fine in 2.6.32-573.7.1.el6.x86_64, and 
yeah I would tend to agree with you that it's more likely as not kernel 
related.  Of course it's possible I suppose that the kernel has changed 
slightly enough that the shorewall rpm needs to be updated.


Thanks
Pete

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[CentOS] Poor perfmance of bridged interfaces

[Sergio Belkin]

Hi,

I've created a bridge using 2 interfaces and have a lot of messages as
follows:

nov 12 15:30:22 localhost kernel: br0: received packet on enp0s3 with own
address as source address
nov 12 15:30:22 localhost kernel: br0: received packet on enp0s3 with own
address as source address

And the operating systems is extremely slow

Interfaces files :

[root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-*
DEVICE=br0
TYPE=Bridge
BOOTPROTO=dhcp
ONBOOT=yes
#STP=on
#DELAY=0
NM_CONTROLLED=no
DEVICE=enp0s3
#HWADDR=08:00:27:AB:1D:E6
BOOTPROTO=none
ONBOOT=yes
NM_CONTROLLED=no
BRIDGE=br0

DEVICE=enp0s8
HWADDR=08:00:27:A3:98:E6
BOOTPROTO=none
ONBOOT=yes
NM_CONTROLLED=no
BRIDGE=br0
DEVICE=lo
TYPE=loopback
IPADDR=127.0.0.1
NETMASK=255.0.0.0
NETWORK=127.0.0.0
# If you're having problems with gated making 127.0.0.0/8 a martian,
# you can change this to something else (255.255.255.255, for example)
BROADCAST=127.255.255.255
ONBOOT=yes
NAME=loopback

I've disabled NetworkManager, but problem persists.

System is:

[root@localhost ~]# uname -a
Linux localhost 3.10.0-123.el7.x86_64 #1 SMP Mon Jun 30 12:09:22 UTC 2014
x86_64 x86_64 x86_64 GNU/Linux

And is virtualized on VirtualBox

Please could you help me to fix it?

Thanks in advance!

-- 
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Re: [CentOS] Poor perfmance of bridged interfaces

[Ulf Volmer]

On 11/12/2015 07:42 PM, Sergio Belkin wrote:


I've created a bridge using 2 interfaces and have a lot of messages as
follows:

nov 12 15:30:22 localhost kernel: br0: received packet on enp0s3 with own
address as source address
nov 12 15:30:22 localhost kernel: br0: received packet on enp0s3 with own
address as source address


sounds like a loop.

What says 'brctl show'?

best regards
Ulf
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