Hi all,
I'm trying to install CentOS 5 as a domU in a CentOS5 dom0 system and I use Virtual Machine Manager to do it. I've dumped all CentOS5 CDs contents in /var/www/CentOS to make a local http media source. It works fine in dom0 browser. When I arrive in "Locating installation media[*]" step I point out to http://localhost/CentOS (which is perfectly active and available) resource, but the application always responds the same: Error, HTTP resource not available. I've also tried with http://127.0.0.1/CentOS but I get the same error message.
¿?¿?
[*] I follow the http://www.centos.org/docs//5/html/Virtualization-en-US/virt-install-wizard.... documantation.
On Wed, 2007-05-02 at 23:37 +0200, Jordi Espasa Clofent wrote:
I'm trying to install CentOS 5 as a domU in a CentOS5 dom0 system and I use Virtual Machine Manager to do it. I've dumped all CentOS5 CDs contents in /var/www/CentOS to make a local http media source. It works fine in dom0 browser. When I arrive in "Locating installation media[*]" step I point out to http://localhost/CentOS (which is perfectly active and available) resource, but the application always responds the same: Error, HTTP resource not available. I've also tried with http://127.0.0.1/CentOS but I get the same error message.
Please remember that dom0 and domU are different systems that just happen to share the same hardware. So, both dom0 and domUs have their own loopback interface, from domU 127.0.0.1 is its own loopback, and not that of dom0. So, you should enter a IP address that the domU can use to talk to dom0 (like a valid IP address on the network that both domains are on).
-- Daniel
Please remember that dom0 and domU are different systems that just happen to share the same hardware. So, both dom0 and domUs have their own loopback interface, from domU 127.0.0.1 is its own loopback, and not that of dom0. So, you should enter a IP address that the domU can use to talk to dom0 (like a valid IP address on the network that both domains are on).
Ok Daniel; your explanation is very clear. But ¿how do I make it?
Jordi Espasa Clofent spake the following on 5/2/2007 2:37 PM:
Hi all,
I'm trying to install CentOS 5 as a domU in a CentOS5 dom0 system and I use Virtual Machine Manager to do it. I've dumped all CentOS5 CDs contents in /var/www/CentOS to make a local http media source. It works fine in dom0 browser. When I arrive in "Locating installation media[*]" step I point out to http://localhost/CentOS (which is perfectly active and available) resource, but the application always responds the same: Error, HTTP resource not available. I've also tried with http://127.0.0.1/CentOS but I get the same error message.
¿?¿?
[*] I follow the http://www.centos.org/docs//5/html/Virtualization-en-US/virt-install-wizard.... documantation.
Have you tried specifying the "real" address instead of the loopback address? The loopback address on Dom0 is not reachable from Domu, because Domu has its own.
Jordi Espasa Clofent spake the following on 5/2/2007 3:33 PM:
Have you tried specifying the "real" address instead of the loopback address? The loopback address on Dom0 is not reachable from Domu, because Domu has its own.
Ok, but AFAIK domU doesn't exist yet!
As soon as you are running the install for the DomU, it is just as if you were running the install on another machine. When you set up your Dom0, you had to give it a local ip address. This is the address that the domU needs to communicate with.
As soon as you are running the install for the DomU, it is just as if you were running the install on another machine. When you set up your Dom0, you had to give it a local ip address. This is the address that the domU needs to communicate with.
Mmmm... Virtual Machine Manager doesn't offer this config option by default (or I don't know). Maybe I have to try it with another virtual machines manager (ie, xm or virsh).
On Thu, 2007-05-03 at 09:07 +0200, Jordi Espasa Clofent wrote:
As soon as you are running the install for the DomU, it is just as if you were running the install on another machine. When you set up your Dom0, you had to give it a local ip address. This is the address that the domU needs to communicate with.
Mmmm... Virtual Machine Manager doesn't offer this config option by default (or I don't know). Maybe I have to try it with another virtual machines manager (ie, xm or virsh).
It does, you can enter the mirror that you want. Say that you have a local copy of CentOS served by dom0, and dom0 has the IP address 192.168.1.201 on the network, and the domU address 192.168.1.202. You'd enter 192.168.1.201/path/to/repo as the "Install media URL".
-- Daniel
It does, you can enter the mirror that you want. Say that you have a local copy of CentOS served by dom0, and dom0 has the IP address 192.168.1.201 on the network, and the domU address 192.168.1.202. You'd enter 192.168.1.201/path/to/repo as the "Install media URL".
Ok, I know it and indeed I've tried it. But I insist: I've not defined ther domU adress in anywhere (How I can? Where I can?). I supose this is the my main fault.
On Thu, 2007-05-03 at 09:28 +0200, Jordi Espasa Clofent wrote:
It does, you can enter the mirror that you want. Say that you have a local copy of CentOS served by dom0, and dom0 has the IP address 192.168.1.201 on the network, and the domU address 192.168.1.202. You'd enter 192.168.1.201/path/to/repo as the "Install media URL".
Ok, I know it and indeed I've tried it. But I insist: I've not defined ther domU adress in anywhere (How I can? Where I can?). I supose this is the my main fault.
Ah, sorry, I misunderstood your previous message. It's defined during the first step of the installation ("Configure TCP/IP"). At any rate, the domU address is not as important, as long as it has networking, but you will have to enter the dom0 address as part of the media URL.
-- Daniel
On Thu, 2007-05-03 at 09:28 +0200, Jordi Espasa Clofent wrote:
It does, you can enter the mirror that you want. Say that you have a local copy of CentOS served by dom0, and dom0 has the IP address 192.168.1.201 on the network, and the domU address 192.168.1.202. You'd enter 192.168.1.201/path/to/repo as the "Install media URL".
Ok, I know it and indeed I've tried it. But I insist: I've not defined ther domU adress in anywhere (How I can? Where I can?). I supose this is the my main fault.
Ah, sorry, I misunderstood your previous message. It's defined during the first step of the installation ("Configure TCP/IP"). At any rate, the domU address is not as important, as long as it has networking, but you will have to enter the dom0 address as part of the media URL.
Daniel, first of all, thanks for your intensive help!
I just start with XEN management, so I think I don't know many essencial points (as the present topic).
I try to explain better:
* The last goal is build a CentOS5-based system with XEN. Up this dom0 I want to build a lot of domU with CentOS5 also.
In /boot/grub/grub.conf I have the next: title CentOS (2.6.18-8.1.3.el5xen) root (hd1,0) kernel /xen.gz-2.6.18-8.1.3.el5 module /vmlinuz-2.6.18-8.1.3.el5xen ro root=/dev/VolGroup00/LogVol00 module /initrd-2.6.18-8.1.3.el5xen.img
So I boot whith xen-system by default. This system has a definend IP (192.168.1.33/DHCP) and the httpd service is running fine.
When I try to install a new virtual machine with Virtual Machine Manager I get always the same error: HTTP resource doesn't found. Even if I try to point out with dom0 IP I get the same error again.
I don't understand why. I understand perfectly what you're telling me, but:
¿Where do I define the domU IP?
Is clear the Virtual Machine Manager needs one IP previosly definend in a place which I unknow.
PD. Note that this is a private message. I do it because I don't want overload the public list whit this question.
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Daniel de Kok -
Jordi Espasa Clofent -
Scott Silva