[CentOS] what is causing this problem ... (yum, fastest mirror)

[Walter H.]

Hello,

what is causing the following, and can someone give the solution which is
mentioned at https://access.redhat.com/articles/1320623

by the way: why are the "fastest" mirrors from other continent?

[root@host sysconfig]# yum clean all
Loaded plugins: fastestmirror, security
Cleaning repos: base epel extras updates
Cleaning up Everything
Cleaning up list of fastest mirrors

[root@host sysconfig]# yum clean all
Loaded plugins: fastestmirror, security
Cleaning repos: base epel extras updates
Cleaning up Everything

[root@host sysconfig]# yum update
Loaded plugins: fastestmirror, security
Setting up Update Process
Determining fastest mirrors
epel/metalink | 12 kB 00:00
* base: mirror.genesisadaptive.com
* epel: mirror.us.leaseweb.net
* extras: mirror.genesisadaptive.com
* updates: mirror.genesisadaptive.com
base | 3.7 kB 00:00
base/primary_db | 4.7 MB 00:01
epel | 4.3 kB 00:00
http://mirror.us.leaseweb.net/epel/6/x86_64/repodata/repomd.xml: [Errno
-1] repomd.xml does not match metalink for epel
Trying other mirror.
epel | 4.3 kB 00:00
https://download-ib01.fedoraproject.org/pub/epel/6/x86_64/repodata/repomd.xml:
[Errno -1] repomd.xml does not match metalink for epel
Trying other mirror.
epel | 4.2 kB 00:00
https://mirror.us-midwest-1.nexcess.net/epel/6/x86_64/repodata/c259ce09172fc535ff3b556ccad8d2a02f128a2da95f0c1389ce9443800e225d-primary.sqlite.bz2:
[Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404 Not
Found"
Trying other mirror.
To address this issue please refer to the below knowledge base article
https://access.redhat.com/articles/1320623
If above article doesn't help to resolve this issue please open a ticket
with Red Hat Support.
http://ftp.linux.ncsu.edu/pub/epel/6/x86_64/repodata/c259ce09172fc535ff3b556ccad8d2a02f128a2da95f0c1389ce9443800e225d-primary.sqlite.bz2:
[Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404 Not
Found"
Trying other mirror.
epel/primary_db | 5.9 MB 00:01
extras | 3.4 kB 00:00
extras/primary_db | 29 kB 00:00
updates | 3.4 kB 00:00
updates/primary_db | 2.0 MB 00:01
No Packages marked for Update


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Re: [CentOS] [OT]multi-master DNS

[Mark Haney]

On 06/25/2017 12:22 PM, Vijay Rajah wrote:

Hello all,

We have  quite a bit of environment on "cloud". We are using our own 
domain names. For this purpouse we stood up a  BIND9 DNS instance on 
Centos 7. And, this being the cloud, we enabled key based dynamic DNS 
for instances to register themselves when they are spun-up. We have a 
single master and multiple slaves. all is well, untill mater goes down 
and we need to spin-up additional instances. Single master has become 
somewhat of a bottleneck


I have looked around, not able to find any solution, for a stable 
Multi-master DNS setup (outside of Windows AD).


Does any one have any specific pointers?


I don't know about anyone else, but in no way would I use Bind9 and DDNS 
for anything, multi-master or not.  I've never had any kind of stable 
success with DDNS and Bind.



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Network Engineer at NeoNova
919-460-3330 option 1
mark.ha...@neonova.net
www.neonova.net

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[CentOS] web content process and sloooww firefox

[Michael Hennebry]

Today, for the first time, I noticed a process named "Web Content".
I was running top because firefox was once again not allowing me to scroll.
Having been down this road before,
I would normally have just closed and reopened firefox.
I needed to do it fairly often.
Web Content was new.
Eventually, I discovered "electrolysis" (why that name?) and the schedule:
https://wiki.mozilla.org/Electrolysis#Schedule_and_Status ,
but I'm not sure how to read it.
What the heck is "riding trains"?
My firefox is 52.2.0 64-bit.
yum.log says it was last updated on the 16th.

As is unusual, I had a pretty good idea which tabs were
using up the CPU, so getting scrolling back was not too hard,
but my usual close and reopen did not work.
Is this a new "feature" of firefox?
Will close and reopen consistently fail to resolve CPU-burning issues?
Will I have to go on a tab-hunt every time?


--
Michael   henne...@web.cs.ndsu.nodak.edu
"Sorry but your password must contain an uppercase letter, a number,
a haiku, a gang sign, a heiroglyph, and the blood of a virgin."
 --  someeecards
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[CentOS] [OT]multi-master DNS

[Vijay Rajah]

Hello all,

We have  quite a bit of environment on "cloud". We are using our own 
domain names. For this purpouse we stood up a  BIND9 DNS instance on 
Centos 7. And, this being the cloud, we enabled key based dynamic DNS 
for instances to register themselves when they are spun-up. We have a 
single master and multiple slaves. all is well, untill mater goes down 
and we need to spin-up additional instances. Single master has become 
somewhat of a bottleneck


I have looked around, not able to find any solution, for a stable 
Multi-master DNS setup (outside of Windows AD).


Does any one have any specific pointers?


-Thanks in advance

Vijay

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Re: [CentOS] test builds on private server updates (kernel)

[Andreas Benzler]

Sorry Hughes,

got some questions. 

I have the feeling that I do a lot wrong. Today I sent a mailing post
at fedora where it is also about btrfs under fedora.

In time when i write the mail i forward it my patch for fedora 25
pretransaction & snapper.yp, with the hope of feedback.

https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject
.org/thread/NLFYHW3IEJHSFBUOEAVHDHBVTL7TOHYZ/

Sometimes I don't know where to push the information.

on https://copr.fedorainfracloud.org/coprs/andybe/CentOS7Python34/

I release a ticket because snapper gui do not build on there repo.
Local with mock or without it never fails. No response.

Since yesterday learned how to use snapper against the dbus api. What
is the better way in my opinion. After some rest i will do it first on
centos and it back into fedora "dnf" later on.

It looks to me as if in a Fedora release little movement. If someone
wants to upgrade something you simply move it there gladly times on the
next release. This generates a high unwilling something at all a
working release to submit an improvement. This is a lot better under
Centos, although Redhat is very slow with its update cycles.

Too bad the feedback is not as good as under Centos.

In principal there are to many ways to push errors or improvments on
each (centos, redhat, fedora) distros.

Or am I doing something wrong. Is there anything I can do better?

It is hopefully not that I care 3 various Linux (This time
Arch/Manjaro, Fedora, Centos). It helps to get ideas.

Thanks for advice.

Sincerely

Andy
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Re: [CentOS] Question Mirrors ?

[Jonathan Billings]

On Fri, Jun 23, 2017 at 03:31:58PM -0400, m.r...@5-cent.us wrote:
> Hey, they've gone onto a new and different error. We were getting "not a
> valid .xml file.
> 
> Try yum clean all, then try it.

This post talks about what happened:

http://smoogespace.blogspot.com/2017/06/problems-with-epel-and-fedora-mirroring.html

(This is only the Fedora/EPEL repo issues)

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[CentOS] [Solved]Re: Question Mirrors ?

[Günther J . Niederwimmer]

Am Freitag, 23. Juni 2017, 12:22:25 CEST schrieb Günther J. Niederwimmer:
> Hello List,
> 
> in the last weeks I have many, many Errors from chron hourly on my systems
> :- (.
> 
> Have we broken or not updated mirrors in the yum config ?
> 
> Thanks for a answer,
The answer

yum clean metadata

is helping me ;-)

Thanks!

-- 
mit freundlichen Grüssen / best regards

  Günther J. Niederwimmer
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Re: [CentOS] Question Mirrors ?

[Jose Maria Terry Jimenez]

El 26/6/17 a las 22:13, m.r...@5-cent.us escribió:


Um. yum clean all *and* yum clean metadata? Doesn't clean all include
metadata?

  mark

Yes, it does. See Table 8.3 here 
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Deployment_Guide/sec-Working_with_Yum_Cache.html

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Re: [CentOS] Question Mirrors ?

[m . roth]

Jonathan Billings wrote:
> On Fri, Jun 23, 2017 at 03:31:58PM -0400, m.r...@5-cent.us wrote:
>> Hey, they've gone onto a new and different error. We were getting "not a
>> valid .xml file.
>>
>> Try yum clean all, then try it.
>
> This post talks about what happened:
>
> http://smoogespace.blogspot.com/2017/06/problems-with-epel-and-fedora-mirroring.html
>
> (This is only the Fedora/EPEL repo issues)
>
Um. yum clean all *and* yum clean metadata? Doesn't clean all include
metadata?

 mark

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Re: [CentOS] Question Mirrors ?

[Richard]

 Original Message 
> Date: Monday, June 26, 2017 16:13:02 -0400
> From: m.r...@5-cent.us
>
> Jonathan Billings wrote:
>> On Fri, Jun 23, 2017 at 03:31:58PM -0400, m.r...@5-cent.us wrote:
>>> Hey, they've gone onto a new and different error. We were getting
>>> "not a valid .xml file.
>>> 
>>> Try yum clean all, then try it.
>> 
>> This post talks about what happened:
>> 
>> http://smoogespace.blogspot.com/2017/06/problems-with-epel-and-fed
>> ora-mirroring.html
>> 
>> (This is only the Fedora/EPEL repo issues)
>> 
> Um. yum clean all *and* yum clean metadata? Doesn't clean all
> include metadata?
> 
>  mark
> 

... and the article says:

   The client side fixes are currently to do *either* one of
   the following ...

acknowledging that point.


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Re: [CentOS] [OT]multi-master DNS

[James A. Peltier]

Bind does not have a method to do multi-master replication.  All updates must 
be done via an intermediary service (database).

In our case, we've used containers and Consul for providing a highly available 
DNS service.  A container will fire up and race for the master lock.  It will 
dump the contents of the database into its named configurations and assuming it 
has the lock will assume the IP address of the master.  Others just come up as 
slaves.

If the master lock is not renewed after a given period of time another 
container can acquire the lock and become master by assuming the IP address of 
master (VRRP/VRID/KeepAliveD)

- On 25 Jun, 2017, at 09:22, Vijay Rajah m...@rvijay.me wrote:

| Hello all,
| 
| We have  quite a bit of environment on "cloud". We are using our own
| domain names. For this purpouse we stood up a  BIND9 DNS instance on
| Centos 7. And, this being the cloud, we enabled key based dynamic DNS
| for instances to register themselves when they are spun-up. We have a
| single master and multiple slaves. all is well, untill mater goes down
| and we need to spin-up additional instances. Single master has become
| somewhat of a bottleneck
| 
| I have looked around, not able to find any solution, for a stable
| Multi-master DNS setup (outside of Windows AD).
| 
| Does any one have any specific pointers?
| 
| 
| -Thanks in advance
| 
| Vijay
| 
| ___
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| CentOS@centos.org
| https://lists.centos.org/mailman/listinfo/centos

-- 
James A. Peltier
IT Services - Research Computing Group
Simon Fraser University - Burnaby Campus
Phone   : 604-365-6432
Fax : 778-782-3045
E-Mail  : jpelt...@sfu.ca
Website : http://www.sfu.ca/itservices
Twitter : @sfu_rcg
Powering Engagement Through Technology
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Re: [CentOS-es] Conexion Centos y SQL Server

[Luis T]

Hola René,

Gracias por la respuesta, sabes que hice la prueba con MySQL Front... y no
conecta. Segui todos los pasos para la conexion remota del SQL vi algunos
manuales pero no se conecta. Sale el mensaje "Cannot connect to database
host on" tengo desactivado el firewall y tambien habilite los puertos 1433.
Alguna idea que podria estar mal. De antemano gracias por sus respuestas.

http://www.resuelvetusproblemas.com/habilitar-conexiones-remotas-en-sql-server-2014/

Saludos,


Luis

2017-06-23 16:09 GMT-05:00 René Lara :

> Prueba a conectarte con algo como  MySQL Front...solo para comprobar que en
> el servidor está todo Ok
> http://www.mysqlfront.de/
>
>
> El servidor está bien, lo mas probable es que sea un erro de sintaxis en la
> llamada
> Quizá esto te sirva
> https://www.connectionstrings.com/
>
>
>
>
> -Mensaje original-
> De: CentOS-es [mailto:centos-es-boun...@centos.org] En nombre de Luis T
> Enviado el: viernes, 23 de junio de 2017 03:13 p.m.
> Para: Efraín Déctor
> CC: centos-es@centos.org
> Asunto: Re: [CentOS-es] Conexion Centos y SQL Server
>
> Hola Efraín,
>
> Gracias por tu respuesta, sabes que sigue todos los pasos pero no me
> permite conectar la base SQL. Habilite la conexion remota del SQL,
> desactive firewall. Probe con las tres opciones de conexion pero nada, por
> telnet si se establece la conexion. Este momento estoy usando esto:
>
>  $serverName = "172.10.10.50\SQL2014, 1433"; //serverName\instanceName,
> portNumber (default is 1433)
> $connectionInfo = array( "Database"=>"PRUEBA", "UID"=>"user1",
> "PWD"=>"123456");
> $conn = sqlsrv_connect( $serverName, $connectionInfo);
>
> if( $conn ) {
>  echo "Connection established.";
> }else{
>  echo "Connection could not be established.";
>  die( print_r( sqlsrv_errors(), true));
> }
> ?>
>
> Revise los logs y me aparece esto:
>
> PHP Fatal error:  Call to undefined function sqlsrv_connect() in
> /var/www/html/prueba.php on line 4
>
> Toda la configuracion la realice tal como esta en el tutorial, nose si hay
> algun error de sintaxis o es necesario habilitar algo en Windows o Centos.
>
> Cualquier ayuda de antemano gracias.
>
>
> Saludos,
>
> Luis
>
>
> 2017-06-22 14:43 GMT-05:00 Efraín Déctor :
>
> > Que tal.
> >
> > Primero que nada en Centos necesitas instalar  php-mssql que está en el
> > repositorio EPEL.
> >
> > Para la conexion en PHP sigue la documentación oficial:
> > http://php.net/manual/es/function.sqlsrv-connect.php
> >
> >
> > Saludos
> >
> >
> >
> >
> > El 22/06/2017 a las 02:36 p. m., Luis T escribió:
> >
> >> Estimados,
> >>
> >> Tengo desarrollado una aplicacion PHP en un Centos 7 y necesito
> conectarlo
> >> a un servidor SQL Server donde tengo una base de datos, para poder
> >> almacenar ahi la informacion. He buscando en internet informacion pero
> >> todavia no lo tengo bien claro. Alguien que me pueda indicar cual es la
> >> mejor forma para realizar esto, de antemano agradezco sus respuestas,
> >> gracias.
> >>
> >>
> >> Saludos,
> >>
> >> Luis
> >> ___
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> >> https://lists.centos.org/mailman/listinfo/centos-es
> >>
> >
> >
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Re: [CentOS-virt] Xen 4.6.3-15 packages, including XSAs 216-219, 221-225 on their way through the build system

[Kevin Stange]

On 06/26/2017 06:59 AM, Giuseppe Tanzilli - Serverplan wrote:
> Hi,
> that kernel fix will be released on 6.x repo also ?
> I see it only on 7.x repo   kernel-4.9.31-27.el7.x86_64.rpm

kernel-4.9.34-28 will fix XSA-216 and CVE-2017-1000364.  It's in the
testing repo right now.

https://buildlogs.centos.org/centos/7/virt/x86_64/xen-46/
https://buildlogs.centos.org/centos/6/virt/x86_64/xen-44/
https://buildlogs.centos.org/centos/6/virt/x86_64/xen-46/

If you have an opportunity to test it and check for issues, it would be
appreciated.

-- 
Kevin Stange
Chief Technology Officer
Steadfast | Managed Infrastructure, Datacenter and Cloud Services
800 S Wells, Suite 190 | Chicago, IL 60607
312.602.2689 X203 | Fax: 312.602.2688
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Re: [CentOS-es] Conexion Centos y SQL Server

[Luis T]

Estimados,

El MySQL Front solo funciona con MySQL? de lo que veo en internet parace
que si. En efecto deje a un lado el tema de la programacion en PHP hasta
solucionar la conexion de la Base de Datos SQL Server. Todas estas pruebas
la estoy realizando en un ambiente virtual. Tengo un SQL Server 2014 que le
tengo desactivado el firewall, incluso deje abierto los puertos 1433 para
la conexion, cree un usuario de pruebas, segui todos los pasos de los
tutoriales en internet pero por alguna razon no se conecta. Tambien hice
una prueba telnet al 1433 y si se establece la conexion. Nose si me falta
alguna configuracion adicional. Este momento voy a instalar en la otra PC
virtual un SQL Express para hacer la prueba punto a punto haber si se
establece la conexion. Cualquier sugerencia es bienvenida, muchas gracias.

Saludos.

Luis

2017-06-26 13:40 GMT-05:00 René Lara :

> Perdon!
> Creí que era my sql!
>
> -Mensaje original-
> De: CentOS-es [mailto:centos-es-boun...@centos.org] En nombre de José
> María
> Terry Jiménez
> Enviado el: lunes, 26 de junio de 2017 01:27 p.m.
> Para: centos-es@centos.org
> Asunto: Re: [CentOS-es] Conexion Centos y SQL Server
>
> El 26/6/17 a las 20:21, René Lara escribió:
>
> > 3) Verificar que es el puerto adecuado. Por default MySql usa el 3306. Tu
> > refieres el 1433 ¿cambiaste eso en el servidor mysql?
> >
> Este hilo trata de MS SQL Server, no de MySQL
>
> Si el servidor no funciona correctamente, mejor una lista/foro de SQL
> Server que CentOS (que es donde se quiere usar el cliente)
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Re: [CentOS-es] Conexion Centos y SQL Server

[René Lara]

Luis:
Si no se conecta con MySQL Front o con otro similar, olvida por el momento
tu programación, pues el problema está en el servidor.
Y antes de ir fuera de la red, prueba localmente, que te funciona
localmente.

Si no funciona localmente, haría lo siguiente.
1) Deshabilitar el firewall.
2) Deshabilitar SELinux (¿o dejarlo en modo permisivo?)
3) Verificar que es el puerto adecuado. Por default MySql usa el 3306. Tu
refieres el 1433 ¿cambiaste eso en el servidor mysql?



-Mensaje original-
De: CentOS-es [mailto:centos-es-boun...@centos.org] En nombre de Luis T
Enviado el: lunes, 26 de junio de 2017 01:03 p.m.
Para: centos-es@centos.org
Asunto: Re: [CentOS-es] Conexion Centos y SQL Server

Hola René,

Gracias por la respuesta, sabes que hice la prueba con MySQL Front... y no
conecta. Segui todos los pasos para la conexion remota del SQL vi algunos
manuales pero no se conecta. Sale el mensaje "Cannot connect to database
host on" tengo desactivado el firewall y tambien habilite los puertos 1433.
Alguna idea que podria estar mal. De antemano gracias por sus respuestas.

http://www.resuelvetusproblemas.com/habilitar-conexiones-remotas-en-sql-serv
er-2014/

Saludos,


Luis

2017-06-23 16:09 GMT-05:00 René Lara :

> Prueba a conectarte con algo como  MySQL Front...solo para comprobar que
en
> el servidor está todo Ok
> http://www.mysqlfront.de/
>
>
> El servidor está bien, lo mas probable es que sea un erro de sintaxis en
la
> llamada
> Quizá esto te sirva
> https://www.connectionstrings.com/
>
>
>
>
> -Mensaje original-
> De: CentOS-es [mailto:centos-es-boun...@centos.org] En nombre de Luis T
> Enviado el: viernes, 23 de junio de 2017 03:13 p.m.
> Para: Efraín Déctor
> CC: centos-es@centos.org
> Asunto: Re: [CentOS-es] Conexion Centos y SQL Server
>
> Hola Efraín,
>
> Gracias por tu respuesta, sabes que sigue todos los pasos pero no me
> permite conectar la base SQL. Habilite la conexion remota del SQL,
> desactive firewall. Probe con las tres opciones de conexion pero nada, por
> telnet si se establece la conexion. Este momento estoy usando esto:
>
>  $serverName = "172.10.10.50\SQL2014, 1433"; //serverName\instanceName,
> portNumber (default is 1433)
> $connectionInfo = array( "Database"=>"PRUEBA", "UID"=>"user1",
> "PWD"=>"123456");
> $conn = sqlsrv_connect( $serverName, $connectionInfo);
>
> if( $conn ) {
>  echo "Connection established.";
> }else{
>  echo "Connection could not be established.";
>  die( print_r( sqlsrv_errors(), true));
> }
> ?>
>
> Revise los logs y me aparece esto:
>
> PHP Fatal error:  Call to undefined function sqlsrv_connect() in
> /var/www/html/prueba.php on line 4
>
> Toda la configuracion la realice tal como esta en el tutorial, nose si hay
> algun error de sintaxis o es necesario habilitar algo en Windows o Centos.
>
> Cualquier ayuda de antemano gracias.
>
>
> Saludos,
>
> Luis
>
>
> 2017-06-22 14:43 GMT-05:00 Efraín Déctor :
>
> > Que tal.
> >
> > Primero que nada en Centos necesitas instalar  php-mssql que está en el
> > repositorio EPEL.
> >
> > Para la conexion en PHP sigue la documentación oficial:
> > http://php.net/manual/es/function.sqlsrv-connect.php
> >
> >
> > Saludos
> >
> >
> >
> >
> > El 22/06/2017 a las 02:36 p. m., Luis T escribió:
> >
> >> Estimados,
> >>
> >> Tengo desarrollado una aplicacion PHP en un Centos 7 y necesito
> conectarlo
> >> a un servidor SQL Server donde tengo una base de datos, para poder
> >> almacenar ahi la informacion. He buscando en internet informacion pero
> >> todavia no lo tengo bien claro. Alguien que me pueda indicar cual es la
> >> mejor forma para realizar esto, de antemano agradezco sus respuestas,
> >> gracias.
> >>
> >>
> >> Saludos,
> >>
> >> Luis
> >> ___
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Re: [CentOS-virt] Xen 4.6.3-15 packages, including XSAs 216-219, 221-225 on their way through the build system

[Giuseppe Tanzilli - Serverplan]

Hi,
that kernel fix will be released on 6.x repo also ?
I see it only on 7.x repo   kernel-4.9.31-27.el7.x86_64.rpm


thanks


On 20/06/2017 20:15, Sarah Newman wrote:

On 06/20/2017 05:06 AM, George Dunlap wrote:

Xen 4.6.3-15 packages for CentOS 6 and CentOS 7 are on their way
through the build system.  They should show up in centos-virt-testing
in a few hours, and in the main mirrors tomorrow morning (God
willing).

These contain several critical updates; users are encouraged to update
as soon as possible.


There are also Linux kernel changes in XSA-216. They apply cleanly to 4.9.31 
and presumably also 4.9.25.

--Sarah
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--
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Giuseppe Tanzilli
Serverplan

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Re: [CentOS-es] Conexion Centos y SQL Server

[José María Terry Jiménez]

El 26/6/17 a las 20:21, René Lara escribió:


3) Verificar que es el puerto adecuado. Por default MySql usa el 3306. Tu
refieres el 1433 ¿cambiaste eso en el servidor mysql?


Este hilo trata de MS SQL Server, no de MySQL

Si el servidor no funciona correctamente, mejor una lista/foro de SQL 
Server que CentOS (que es donde se quiere usar el cliente)

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Re: [CentOS-es] Conexion Centos y SQL Server

[Efraín Déctor]

Empecemos por lo básico:

Puedes hacer ping de Centos a Windows?


El 26/06/2017 a las 02:19 p. m., Luis T escribió:

Estimados,

El MySQL Front solo funciona con MySQL? de lo que veo en internet parace
que si. En efecto deje a un lado el tema de la programacion en PHP hasta
solucionar la conexion de la Base de Datos SQL Server. Todas estas pruebas
la estoy realizando en un ambiente virtual. Tengo un SQL Server 2014 que le
tengo desactivado el firewall, incluso deje abierto los puertos 1433 para
la conexion, cree un usuario de pruebas, segui todos los pasos de los
tutoriales en internet pero por alguna razon no se conecta. Tambien hice
una prueba telnet al 1433 y si se establece la conexion. Nose si me falta
alguna configuracion adicional. Este momento voy a instalar en la otra PC
virtual un SQL Express para hacer la prueba punto a punto haber si se
establece la conexion. Cualquier sugerencia es bienvenida, muchas gracias.

Saludos.

Luis

2017-06-26 13:40 GMT-05:00 René Lara :


Perdon!
Creí que era my sql!

-Mensaje original-
De: CentOS-es [mailto:centos-es-boun...@centos.org] En nombre de José
María
Terry Jiménez
Enviado el: lunes, 26 de junio de 2017 01:27 p.m.
Para: centos-es@centos.org
Asunto: Re: [CentOS-es] Conexion Centos y SQL Server

El 26/6/17 a las 20:21, René Lara escribió:


3) Verificar que es el puerto adecuado. Por default MySql usa el 3306. Tu
refieres el 1433 ¿cambiaste eso en el servidor mysql?


Este hilo trata de MS SQL Server, no de MySQL

Si el servidor no funciona correctamente, mejor una lista/foro de SQL
Server que CentOS (que es donde se quiere usar el cliente)
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[CentOS-virt] Loss of DHCP destroys bridge

[Ken Bass]

I am having trouble with recovery. Today due to electrical work I 
powered down my networks Router / DHCP server.


My Centos 7 host machines lost their DHCP lease (they are actually 
static leases). Once I power my Router / DHCP server back up none of my 
virtual machine were accessible. It appears that when the DHCP lease was 
lost on the virt server the bridge of the KVM guest were all losts. A 
'br show' had none of the guests anymore. So each guest was sending out 
DHCP requests as expected but since the guest was no longer bridged the 
packets went no-where.


How do I handle proper recovery from this?

The sequence on the host seemed to be:

07:00:00 I powered off the DHCP server and router for electrical work

Jun 26 10:08:02 vm-server dhclient[973]: DHCPREQUEST on br0 to 
192.168.2.1 port 67 (xid=0x7627186d)


requests continue for quite some hours and then NetworkManager chimes in.

Jun 26 14:55:23 vm-server NetworkManager[840]:  [1498503323.1518] 
dhcp4 (br0): state changed bound -> expire


Jun 26 14:55:23 vm-server NetworkManager[840]:  [1498503323.1681] 
dhcp4 (br0): canceled DHCP transaction, DHCP client pid 973
Jun 26 14:55:23 vm-server NetworkManager[840]:  [1498503323.1681] 
dhcp4 (br0): state changed expire -> done
Jun 26 14:55:23 vm-server NetworkManager[840]:  [1498503323.1684] 
device (br0): scheduling DHCPv4 restart in 120 seconds, 3 tries left 
(reason: lease expired)


(looks like 3 tries of something)

Jun 26 15:00:52 vm-server NetworkManager[840]:  [1498503652.9531] 
dhcp4 (br0): request timed out
Jun 26 15:00:52 vm-server NetworkManager[840]:  [1498503652.9532] 
dhcp4 (br0): state changed unknown -> timeout
Jun 26 15:00:52 vm-server NetworkManager[840]:  [1498503652.9694] 
dhcp4 (br0): canceled DHCP transaction, DHCP client pid 15937
Jun 26 15:00:52 vm-server NetworkManager[840]:  [1498503652.9694] 
dhcp4 (br0): state changed timeout -> done
Jun 26 15:00:52 vm-server NetworkManager[840]:  [1498503652.9697] 
device (br0): scheduling DHCPv4 restart in 120 seconds, 1 tries left 
(reason: lease expired)
Jun 26 15:02:52 vm-server NetworkManager[840]:  [1498503772.9548] 
dhcp4 (br0): activation: beginning transaction (timeout in 45 seconds)
Jun 26 15:02:52 vm-server NetworkManager[840]:  [1498503772.9566] 
dhcp4 (br0): dhclient started with pid 15994
Jun 26 15:02:52 vm-server dhclient[15994]: DHCPDISCOVER on br0 to 
255.255.255.255 port 67 interval 4 (xid=0x54083ff1)
Jun 26 15:03:37 vm-server NetworkManager[840]:  [1498503817.9818] 
dhcp4 (br0): request timed out
Jun 26 15:03:37 vm-server NetworkManager[840]:  [1498503817.9819] 
dhcp4 (br0): state changed unknown -> timeout
Jun 26 15:03:37 vm-server NetworkManager[840]:  [1498503817.9981] 
dhcp4 (br0): canceled DHCP transaction, DHCP client pid 15994
Jun 26 15:03:37 vm-server NetworkManager[840]:  [1498503817.9981] 
dhcp4 (br0): state changed timeout -> done
Jun 26 15:03:37 vm-server NetworkManager[840]:  [1498503817.9984] 
device (br0): state change: activated -> failed (reason 
'ip-config-unavailable') [100 120 5]
Jun 26 15:03:37 vm-server NetworkManager[840]:  [1498503817.9987] 
manager: NetworkManager state is now CONNECTED_LOCAL
Jun 26 15:03:38 vm-server NetworkManager[840]:  [1498503818.0457] 
device (br0): Activation: failed for connection 'br0'

Jun 26 15:03:38 vm-server kernel: device enp3s0 left promiscuous mode
Jun 26 15:03:38 vm-server kernel: br0: port 1(enp3s0) entered disabled state
Jun 26 15:03:38 vm-server NetworkManager[840]:  [1498503818.0473] 
device (br0): detached bridge port enp3s0

Jun 26 15:03:38 vm-server kernel: device vnet0 left promiscuous mode
Jun 26 15:03:38 vm-server kernel: br0: port 2(vnet0) entered disabled state
Jun 26 15:03:38 vm-server NetworkManager[840]:  [1498503818.0483] 
device (br0): detached bridge port vnet0

Jun 26 15:03:38 vm-server kernel: device vnet2 left promiscuous mode
Jun 26 15:03:38 vm-server kernel: br0: port 3(vnet2) entered disabled state
Jun 26 15:03:38 vm-server NetworkManager[840]:  [1498503818.0493] 
device (br0): detached bridge port vnet2

Jun 26 15:03:38 vm-server kernel: device vnet3 left promiscuous mode

When I powered back on at:

Jun 26 16:45:29 vm-server dhclient[26539]: DHCPOFFER from 192.168.2.1
Jun 26 16:45:29 vm-server dhclient[26539]: DHCPACK from 192.168.2.1 
(xid=0x4c7b48be)


None of the bridges that NetworkManager decided to detach were restored.

Is this the case of being bitten by NetworkManager once again? Not sure 
why I am running it other than it is the default and I don't remember if 
it is responsible for setting up the bridges.


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