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Götz Reinicke

2008-Apr-03 08:57 UTC

[Xen-users] understanding networking - xen 3.1 and CentOS 5.1

Hi,

recently I started to play with xen. Therefore I got a new system and 
installed Centos 5.1 with the virtualisation packages (xen 3.1 etc.)

Setting up a Centos 5.1 Guest using the virtual manager tool works like 
a charm, the guest boots has network access, can install updates from 
the internet - so far so good.

Now I was looking at the network configuration and was confused. How 
dose the IP configuration of the client is set up? After my basic 
installation the guest uses dhcp.

Until now I haven''t found any answer to my question how I may configure
the host and the guest(s) to use fixed ip addresses from the lan the 
server is located on. I fount a lot of web pages, pdfs etc, but all 
looks somhow different :-) (O.K. the host can be )

E.g. I''d like the host to have the ip 172.17.255.10, the guests should 
have the ip 172.17.255.11, .12 and .13 ...

I''m not affraid to use vi to configure the guest or edit configfiles; 
using the virtual manager tool was just the first start.

So any help or point to the helpfull how to is welcome.


Thanks and best regards

Götz
-- 
Götz Reinicke
IT Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
E-Mail goetz.reinicke@filmakademie.de

Filmakademie Baden-Württemberg GmbH
Mathildenstr. 20
71638 Ludwigsburg
www.filmakademie.de

Eintragung Amtsgericht Stuttgart HRB 205016
Vorsitzender des Aufsichtsrats:
Dr. Christoph Palmer, MdL, Minister a.D.

Geschäftsführer:
Prof. Thomas Schadt


_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Boris Derzhavets

2008-Apr-03 17:35 UTC

head link

Re: [Xen-users] understanding networking - xen 3.1 and CentOS 5.1

Understanding behavior of daemons  libvirtd,dnsmasq 
on CentOS 5.1(F8) Dom0 . Bridging and NAT strategy for
DomUs (SNV in particular) at CentoS 5.1 (F8) Dom0.

http://lxer.com/module/newswire/view/99877/index.html
http://lxer.com/module/newswire/view/99778/index.html

--- Götz Reinicke <goetz.reinicke@filmakademie.de>
wrote:
> Hi,
> 
> recently I started to play with xen. Therefore I got
> a new system and 
> installed Centos 5.1 with the virtualisation
> packages (xen 3.1 etc.)
> 
> Setting up a Centos 5.1 Guest using the virtual
> manager tool works like 
> a charm, the guest boots has network access, can
> install updates from 
> the internet - so far so good.
> 
> Now I was looking at the network configuration and
> was confused. How 
> dose the IP configuration of the client is set up?
> After my basic 
> installation the guest uses dhcp.
> 
> Until now I haven''t found any answer to my question
> how I may configure 
> the host and the guest(s) to use fixed ip addresses
> from the lan the 
> server is located on. I fount a lot of web pages,
> pdfs etc, but all 
> looks somhow different :-) (O.K. the host can be )
> 
> E.g. I''d like the host to have the ip 172.17.255.10,
> the guests should 
> have the ip 172.17.255.11, .12 and .13 ...
> 
> I''m not affraid to use vi to configure the guest or
> edit configfiles; 
> using the virtual manager tool was just the first
> start.
> 
> So any help or point to the helpfull how to is
> welcome.
> 
> 
> Thanks and best regards
> 
> Götz
> -- 
> Götz Reinicke
> IT Koordinator
> 
> Tel. +49 7141 969 420
> Fax  +49 7141 969 55 420
> E-Mail goetz.reinicke@filmakademie.de
> 
> Filmakademie Baden-Württemberg GmbH
> Mathildenstr. 20
> 71638 Ludwigsburg
> www.filmakademie.de
> 
> Eintragung Amtsgericht Stuttgart HRB 205016
> Vorsitzender des Aufsichtsrats:
> Dr. Christoph Palmer, MdL, Minister a.D.
> 
> Geschäftsführer:
> Prof. Thomas Schadt
> 
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
> 


     
____________________________________________________________________________________
You rock. That''s why Blockbuster''s offering you one month of
Blockbuster Total Access, No Cost.
http://tc.deals.yahoo.com/tc/blockbuster/text5.com

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Boris Derzhavets

2008-Apr-03 18:13 UTC

head link

Re: [Xen-users] understanding networking - xen 3.1 and CentOS 5.1

> --- Götz Reinicke <goetz.reinicke@filmakademie.de>
> wrote:
> 
> > Hi,
> > 
> > recently I started to play with xen. Therefore I
> got
> > a new system and 
> > installed Centos 5.1 with the virtualisation
> > packages (xen 3.1 etc.)
> > 
> > Setting up a Centos 5.1 Guest using the virtual
> > manager tool works like 
> > a charm, the guest boots has network access, can
> > install updates from 
> > the internet - so far so good.
> > 
> > Now I was looking at the network configuration and
> > was confused. How 
> > dose the IP configuration of the client is set up?
> > After my basic 
> > installation the guest uses dhcp.
> > 
> > Until now I haven''t found any answer to my
> question
> > how I may configure 
> > the host and the guest(s) to use fixed ip
> addresses
> > from the lan the 
> > server is located on. I fount a lot of web pages,
> > pdfs etc, but all 
> > looks somhow different :-) (O.K. the host can be )
> > 
> > E.g. I''d like the host to have the ip
> 172.17.255.10,
> > the guests should 
> > have the ip 172.17.255.11, .12 and .13 ...*********
Option 1
*********
Disable daemon libvirtd:-
# chkconfig libvirtd off
Put CentOS 5.1 Dom0 on DHCP Bridge.
Verify /etc/xen/xend-conf.sxp to turn on old
fashioned xen bridging based on ethernet interface
connected to bridge and specify "DHCP" for any DomU 
you intend to create. That''s it. 
*********
Option 2
*********
If libvirtd is up and running (default state)
any DomU will be on subnet 192.168.122.1 (netmask
255.255.255.0) 
and will be perfectly reachable from the Dom0''s LAN,
whatever it is. 
Libvirtd is doing bridging and NAT to mentioned subnet
automatically. 
This aproach was implemented by RH in F7,F8,RHEL 5.1
and differs 
from old fashion xen bridging. However, RHEL 5.1
(CentOS 5.1) does allow 
you to disable libvirtd and turn back to what you
want.
No problems again
> > 
> > I''m not affraid to use vi to configure the guest
> or
> > edit configfiles; 
> > using the virtual manager tool was just the first
> > start.
> > 
> > So any help or point to the helpfull how to is
> > welcome.
> > 
> > 
> > Thanks and best regards
> > 
> > Götz
> > -- 
> > Götz Reinicke
> > IT Koordinator
> > 
> > Tel. +49 7141 969 420
> > Fax  +49 7141 969 55 420
> > E-Mail goetz.reinicke@filmakademie.de
> > 
> > Filmakademie Baden-Württemberg GmbH
> > Mathildenstr. 20
> > 71638 Ludwigsburg
> > www.filmakademie.de
> > 
> > Eintragung Amtsgericht Stuttgart HRB 205016
> > Vorsitzender des Aufsichtsrats:
> > Dr. Christoph Palmer, MdL, Minister a.D.
> > 
> > Geschäftsführer:
> > Prof. Thomas Schadt
> > 
> > 
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@lists.xensource.com
> > http://lists.xensource.com/xen-users
> > 
> 
> 
> 
>      
>
____________________________________________________________________________________> You rock. That''s why Blockbuster''s offering you one
> month of Blockbuster Total Access, No Cost.  
> http://tc.deals.yahoo.com/tc/blockbuster/text5.com
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
> 


     
____________________________________________________________________________________
You rock. That''s why Blockbuster''s offering you one month of
Blockbuster Total Access, No Cost.
http://tc.deals.yahoo.com/tc/blockbuster/text5.com

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Boris Derzhavets

2008-Apr-04 20:08 UTC

head link

Re: [Xen-users] understanding networking - xen 3.1 and CentOS 5.1

> > --- Götz Reinicke <goetz.reinicke@filmakademie.de>
> > wrote:
> > 
> > > Hi,
> > > 
> > > recently I started to play with xen. Therefore I
> > got
> > > a new system and 
> > > installed Centos 5.1 with the virtualisation
> > > packages (xen 3.1 etc.)
> > > 
> > > Setting up a Centos 5.1 Guest using the virtual
> > > manager tool works like 
> > > a charm, the guest boots has network access, can
> > > install updates from 
> > > the internet - so far so good.
> > > 
> > > Now I was looking at the network configuration
> and
> > > was confused. How 
> > > dose the IP configuration of the client is set
> up?
> > > After my basic 
> > > installation the guest uses dhcp.
> > > 
> > > Until now I haven''t found any answer to my
> > question
> > > how I may configure 
> > > the host and the guest(s) to use fixed ip
> > addresses
> > > from the lan the 
> > > server is located on. I fount a lot of web
> pages,
> > > pdfs etc, but all 
> > > looks somhow different :-) (O.K. the host can be
> )
> > > 
> > > E.g. I''d like the host to have the ip
> > 172.17.255.10,
> > > the guests should 
> > > have the ip 172.17.255.11, .12 and .13 ...
******************************************************
Option 1.1 (DHCP Bridge is not required by CentOS 5.1)
******************************************************
Disable daemon libvirtd:-
# chkconfig libvirtd off
Assign CentOS 5.1 Dom0 static IP address matching your
LAN subnet.Verify /etc/xen/xend-conf.sxp to turn on
old
fashioned xen bridging based on ethernet interface
assigned desired static IP address.
Creating DomUs,give them static IP addresses from the
same subnet as Dom0. 
*******************
Option 2 (improved)
*******************
If libvirtd is up and running (default state)
any DomU will be on subnet 192.168.122.1 (netmask
255.255.255.0) and will be perfectly reachable from
the Dom0''s LAN,whatever it is. 
Libvirtd is doing bridging and NAT forwarding to
mentioned subnet automatically. 
 This approach was implemented by RH in F7,F8,RHEL 5.1
and differs from old fashion xen bridging. However,
RHEL 5.1 (CentOS 5.1) does allow you to disable
libvirtd and turn back to what you want.
  F8 does require DHCP bridge to put DomU on 
subnet different from 192.168.122.1 (netmask
255.255.255.0).Libvirtd behaves different on
F8 and RHEL 5.1.


I skipped word "forwarding" in previous message.
> 
> > > 
> > > I''m not affraid to use vi to configure the guest
> > or
> > > edit configfiles; 
> > > using the virtual manager tool was just the
> first
> > > start.
> > > 
> > > So any help or point to the helpfull how to is
> > > welcome.
> > > 
> > > 
> > > Thanks and best regards
> > > 
> > > Götz
> > > -- 
> > > Götz Reinicke
> > > IT Koordinator
> > > 
> > > Tel. +49 7141 969 420
> > > Fax  +49 7141 969 55 420
> > > E-Mail goetz.reinicke@filmakademie.de
> > > 
> > > Filmakademie Baden-Württemberg GmbH
> > > Mathildenstr. 20
> > > 71638 Ludwigsburg
> > > www.filmakademie.de
> > > 
> > > Eintragung Amtsgericht Stuttgart HRB 205016
> > > Vorsitzender des Aufsichtsrats:
> > > Dr. Christoph Palmer, MdL, Minister a.D.
> > > 
> > > Geschäftsführer:
> > > Prof. Thomas Schadt
> > > 
> > > 
> > > _______________________________________________
> > > Xen-users mailing list
> > > Xen-users@lists.xensource.com
> > > http://lists.xensource.com/xen-users
> > > 
> > 
> > 
> > 
> >      
> >
>
____________________________________________________________________________________> > You rock. That''s why Blockbuster''s offering you
> one
> > month of Blockbuster Total Access, No Cost.  
> > http://tc.deals.yahoo.com/tc/blockbuster/text5.com
> > 
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@lists.xensource.com
> > http://lists.xensource.com/xen-users
> > 
> 
> 
> 
>      
>
____________________________________________________________________________________> You rock. That''s why Blockbuster''s offering you one
> month of Blockbuster Total Access, No Cost.  
> http://tc.deals.yahoo.com/tc/blockbuster/text5.com
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
> 


     
____________________________________________________________________________________
You rock. That''s why Blockbuster''s offering you one month of
Blockbuster Total Access, No Cost.
http://tc.deals.yahoo.com/tc/blockbuster/text5.com

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Kai Schaetzl

2008-Apr-07 12:07 UTC

head link

Re: [Xen-users] understanding networking - xen 3.1 and CentOS 5.1

Boris Derzhavets wrote on Thu, 3 Apr 2008 11:13:23 -0700 (PDT):
> Disable daemon libvirtd:-
> # chkconfig libvirtd off
> Put CentOS 5.1 Dom0 on DHCP Bridge.
> Verify /etc/xen/xend-conf.sxp to turn on old
> fashioned xen bridging based on ethernet interface
> connected to bridge and specify "DHCP" for any DomU 
> you intend to create. That''s it.
unfortunately, that''s not it :-( Compare message-id 
<VA.000030ff.61024b29@news.conactive.com>

Kai

-- 
Kai Schätzl, Berlin, Germany
Get your web at Conactive Internet Services: http://www.conactive.com




_______________________________________________
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http://lists.xensource.com/xen-users

Götz Reinicke

2008-Apr-07 12:31 UTC

head link

Re: [Xen-users] understanding networking - xen 3.1 and CentOS 5.1

Kai Schaetzl schrieb:> Boris Derzhavets wrote on Thu, 3 Apr 2008 11:13:23 -0700 (PDT):
> 
>> Disable daemon libvirtd:-
>> # chkconfig libvirtd off
>> Put CentOS 5.1 Dom0 on DHCP Bridge.
>> Verify /etc/xen/xend-conf.sxp to turn on old
>> fashioned xen bridging based on ethernet interface
>> connected to bridge and specify "DHCP" for any DomU 
>> you intend to create. That''s it.
> 
> unfortunately, that''s not it :-( Compare message-id 
> <VA.000030ff.61024b29@news.conactive.com>
??

/Götz
-- 
Götz Reinicke
IT Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
E-Mail goetz.reinicke@filmakademie.de

Filmakademie Baden-Württemberg GmbH
Mathildenstr. 20
71638 Ludwigsburg
www.filmakademie.de

Eintragung Amtsgericht Stuttgart HRB 205016
Vorsitzender des Aufsichtsrats:
Dr. Christoph Palmer, MdL, Minister a.D.

Geschäftsführer:
Prof. Thomas Schadt


_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Kai Schaetzl

2008-Apr-07 14:31 UTC

head link

Re: [Xen-users] understanding networking - xen 3.1 and CentOS 5.1

Götz Reinicke wrote on Mon, 07 Apr 2008 14:31:11 +0200:
> ??
Not sure what you mean. Don''t you know how to find a message by
message-id
or what is it?

Kai

-- 
Kai Schätzl, Berlin, Germany
Get your web at Conactive Internet Services: http://www.conactive.com




_______________________________________________
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Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Götz Reinicke

2008-Apr-07 14:36 UTC

head link

Re: [Xen-users] understanding networking - xen 3.1 and CentOS 5.1

Kai Schaetzl schrieb:> Götz Reinicke wrote on Mon, 07 Apr 2008 14:31:11 +0200:
> 
>> ??
> 
> Not sure what you mean. Don''t you know how to find a message by
message-id
> or what is it?
Thats rigt; I dont know where to look for the ID.

Regards

Götz
-- 
Götz Reinicke
IT Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
E-Mail goetz.reinicke@filmakademie.de

Filmakademie Baden-Württemberg GmbH
Mathildenstr. 20
71638 Ludwigsburg
www.filmakademie.de

Eintragung Amtsgericht Stuttgart HRB 205016
Vorsitzender des Aufsichtsrats:
Dr. Christoph Palmer, MdL, Minister a.D.

Geschäftsführer:
Prof. Thomas Schadt


_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Kai Schaetzl

2008-Apr-07 16:31 UTC

head link

Re: [Xen-users] understanding networking - xen 3.1 and CentOS 5.1

Götz Reinicke wrote on Mon, 07 Apr 2008 16:36:07 +0200:
> Thats rigt; I dont know where to look for the ID.
You copy the id and paste it in the search function of your mail program, 
preferrably let it only search the folder that you archive this mailing 
list in.

Kai

-- 
Kai Schätzl, Berlin, Germany
Get your web at Conactive Internet Services: http://www.conactive.com




_______________________________________________
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http://lists.xensource.com/xen-users

Martin Leben

2008-Apr-07 19:58 UTC

head link

[Xen-users] Re: understanding networking - xen 3.1 and CentOS 5.1

Kai Schaetzl wrote:> Boris Derzhavets wrote on Thu, 3 Apr 2008 11:13:23 -0700 (PDT):
> 
>> Disable daemon libvirtd:-
>> # chkconfig libvirtd off
>> Put CentOS 5.1 Dom0 on DHCP Bridge.
>> Verify /etc/xen/xend-conf.sxp to turn on old
>> fashioned xen bridging based on ethernet interface
>> connected to bridge and specify "DHCP" for any DomU 
>> you intend to create. That''s it.
> 
> unfortunately, that''s not it :-( Compare message-id 
> <VA.000030ff.61024b29@news.conactive.com>
> 
> Kai

Hi,

Gmane, apart from being a bidirectional mail to news gateway, tracks message 
id:s of all messages on the lists it carries:

<http://mid.gmane.org/VA.000030ff.61024b29@news.conactive.com>

/Martin Leben


_______________________________________________
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http://lists.xensource.com/xen-users

Xen users - Apr 2008 - understanding networking - xen 3.1 and CentOS 5.1

[Xen-users] understanding networking - xen 3.1 and CentOS 5.1

Re: [Xen-users] understanding networking - xen 3.1 and CentOS 5.1

Re: [Xen-users] understanding networking - xen 3.1 and CentOS 5.1

Re: [Xen-users] understanding networking - xen 3.1 and CentOS 5.1

Re: [Xen-users] understanding networking - xen 3.1 and CentOS 5.1

Re: [Xen-users] understanding networking - xen 3.1 and CentOS 5.1

Re: [Xen-users] understanding networking - xen 3.1 and CentOS 5.1

Re: [Xen-users] understanding networking - xen 3.1 and CentOS 5.1

Re: [Xen-users] understanding networking - xen 3.1 and CentOS 5.1

[Xen-users] Re: understanding networking - xen 3.1 and CentOS 5.1