CentOS 5 :: Installation Of Guest CentOS 5.5 DomU On Centos 5.5 Xen Dom0?
Aug 4, 2010
Problems with xen 3.1.2 creating and installing domU CentOS 5.5 I am trying to do a virt-install --prompt --paravirt, and the install error out while trying to download install RPMs. I have googled for xen centos virt-install and various permutations. I have found similar howtos for 5.4 and 5.3, but they resulted in the same outcome. I did find several posts with similar issues, but no solution was posted.[URL]..
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May 17, 2010
I'm using virtual network (NAT network) for my domU.When I change dom0's firewall setup, the domU will fail to connect to Internet anymore.So far, the only way to bring the network back is reboot dom0 !I try to restart service network and libvirtd on dom0 ... it doesn't work.How can I bring the domU network back without reboot dom0 ?
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Dec 22, 2010
I installed CentOS 5.5 x86_64 on server as xen dom0. When i try to install CentOS 5.5 x86_64 as guest (hardware virtualization) i see "Kernel panic"...Installation not started: i see install cd's boot menu, press Enter... that's all.
Dom0 kernel: 2.6.18-194.26.1.el5xen, xen 3.0.3
Only standart installation, repo's and update's...
Code: 8b 72 40 48 8d 4c 24 1c 48 8b 7a 20 ba c4 01 00 00 e8 5f 77
RIP [<ffffffff8008192f>] cpuid4_cache_lookup+0x256/0x356
RSP <ffff81010fc75d60>[code]....
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May 3, 2009
I have tried to install debian 5.0 and 4.0 without any luck. I have both tried virt-manager and virt-install with both debian-501-i386-netinst.iso, and full dvd. I't always gives me the same error:Starting install.Could not find an installable distribution at '/xen/debian-501-i386-netinst.iso'
[Code]...
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Aug 27, 2010
I just ran into a weird problem with a CentOS 5.5 64-bit server running VirtualBox 3.2.8 (I would run Vmware Server 2.0.2 if not for the well known fact that Vmware doesn't care about its Server line anymore and it doesn't run on CentOS > 5.3 without major splits). I currently have two guests in that VirtualBox setup, a CentOS 5.5 64-bit and a Fedora 13 64-bit. The CentOS 5.5 guest shows less memory available than configured. If, for example, I give the virtual machine 512MB of memory the guest OS only recognizes 380MB. If I give it 768MB it only recognizes 637MB, and so on. I don't have that problem on the Fedora guest - 1024MB configured, 1024MB available.
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Jul 19, 2011
I have been searching the web for a few hours and have not had any luck finding instructions on how to setup Xen HVM Dom0 on a CentOS 5.6. I have a test server with a stock install of CentOS 5.6 that support AMD-V.
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Mar 10, 2010
I have an etch-based Xen server that has several Xen domU's on it. All the domU's are etch or lenny based, but I'd like to install a karmic guest. I use xen-tools to install my domU's - e.g., xen-create-image --debootstrap <etc.>After much googling, I've found bits and pieces of info that have gotten me closer to the goal, but the debootstrap script I have is for hoary (I think etch came with this), and I'm pretty sure this won't work.
If you have been able to successfully install a Karmic guest on an etch or lenny host, I'd be very grateful for pointers.
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Dec 29, 2010
I just install xen and kernel-xen version 2.6.18-194.26.1.el5xen, booting into the xen kernel dom0 shows me continous colorful scrambling and scrolling. I can ssh to dom0 and get correct display but the dom0 console is where it shows the colorful garbage scrolling. i have the Supermicro X7DC motherboard with a XGI Z9 graphics card. GUI is not installed and I don't have the rhgb parameter in my grub.conf. My grub.conf is plain and unmodified.
#boot=/dev/md0
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
[Code].....
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Mar 28, 2009
I installed Centos5.2 and have created 1 instance so far. It all works great, but when I created the new instance (using command line from ssh and "virt-install") it gave a message saying probing for video, not found, assuming headless and on I went with the install.
But now I have need for a framebuffer because I have a JBOSS/Java Captcha routine which throws an error if it can't use the X11 libraries or some such (I've resolved this before on a headless Amazon instance once by just running "Xorg"). But I can't run Xorg on my DomU because it can't find the fb device!
So, I searched around and did a makedev -d /dev/fb to create it, but it still doesn't work, because, I assume, the hardware isn't found anywhere. So... how do I get Xorg to work in this case? Or do I need to re-do the virt install and somehow force it to find video hardware (but how?)
Here is some salient output:
root@virty{/etc/X11}: uname -a
Linux virty 2.6.18-92.1.22.el5xen #1 SMP Tue Dec 16 12:26:32 EST 2008 x86_64 x86_64 x86_64 GNU/Linux
root@domU{/etc/X11}: uname -a
[Code].....
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Apr 25, 2009
I have a problem with a VM running Centos 5.3 on a Centos 5.2 hypervisor. Any kernel install makes the system unbootable and I have to copy an old /boot directory to get it to boot again. After some investigation I found that grub was always failing. These are the partitions I have. xvda is the OS virtual drive. xvda1 is the /boot partitition and xvda2 is the LVM partition. A standard default install.
cat /proc/partitions
major minor #blocks name
202 0 14648448 xvda
202 1 104391 xvda1
202 2 14538825 xvda2
202 16 195313152 xvdb
202 17 195310206 xvdb1
253 0 11337728 dm-0
253 1 2031616 dm-1
253 2 190840832 dm-2
Apparently, this file could be suspect. But it seems to be OK according to what I have read.
cat /boot/grub/device.map
# this device map was generated by anaconda
(hd0) /dev/xvda
If I try to re-install grub I get...
Attempt 1)
grub-install hd0
/dev/xvda1 does not have any corresponding BIOS drive.
Attempt 2)
grub-install /dev/xvda
expr: non-numeric argument
/dev/xvda1 does not have any corresponding BIOS drive.
Attempt 3)
grub-install --recheck hd0
Probing devices to guess BIOS drives. This may take a long time.
No suitable drive was found in the generated device map.
Reverting to backed up copy.
Attempt 4)
grub-install --recheck /dev/xvda
Probing devices to guess BIOS drives. This may take a long time.
No suitable drive was found in the generated device map.
Reverting to backed up copy.
Attempt 5)
grub
Probing devices to guess BIOS drives. This may take a long time.
GNU GRUB version 0.97 (640K lower / 3072K upper memory)
[Minimal BASH-like line editing is supported. For the first word, TAB lists possible command completions. Anywhere else TAB lists the possible completions of a device/filename.]
grub> root (hd0,0)
root (hd0,0)
Error 21: Selected disk does not exist
This is my grub.conf file...
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that all kernel and initrd paths are relative to /boot/, e.g.
# root (hd0,0)
# kernel /vmlinuz-version ro root=/dev/VolGroup00/LogVol00
# initrd /initrd-version.img
#boot=/dev/xvda
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title CentOS (2.6.18-128.1.6.el5xen)
root (hd0,0)
kernel /vmlinuz-2.6.18-128.1.6.el5xen ro root=/dev/VolGroup00/LogVol00
initrd /initrd-2.6.18-128.1.6.el5xen.img
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Feb 1, 2009
I'm running a CentOS 5.2 on dom0 and two CentOS 5.2 on domU.The domU use virbr0.I install domU via GUI interface and did not change anything ... the domUcan ping and connect to dom0 but can't access to Internet !!I search google and find someone mentioned that I need to enable IP forwardin dom0 ... I did but my domU still can't access to Internet.What else I need to do ?The routing table of dom0 is:
# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
[code]....
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Oct 8, 2009
I have CentOS 5.3 dual booting with Vista on a machine with AMD-V support. I'm looking to get my existing Vista partition running as a DomU Xen machine. Can this be done without having a dedicated video card?I've got a Xen kernel (from the repositories) installed and running perfectly with my nVidia graphics card. I tried to set up a new DomU through virt-manager and set it up as Vista, pointed it at the physical partition (fakeRAID mapper device) and gave it 2Gb RAM (I have 8Gb total). I got it to do a PXE network boot, knowing that this would fail and therefore no installation would be attempted, as no installation is needed.
This worked well in that the initial PXE boot failed and the machine shut down. When I start it now it seems to actually boot Vista, but I just can't see it! It goes as far as saying "Booting from Hard Disk..." in the viewer window and then doesn't update, although the disk activity and CPU usage are very similar to a machine booting Vista to the login prompt.
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Aug 24, 2010
I have CentOS 5.5 distribution with Dom0 and DomU installed. I try to access Dom0 files during vsftpd server from DomU during ftp client. I successfully login with root and simple user, but when I try to list (or cd to some directory) in user home the SELinux prevent it from me. I get this in audit.log:
[Code]....
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Feb 9, 2011
I am in the process of building a new server on an Asus P5QPL-AM motherboard and an Intel E8600 processor.explain to me the difference between the two versions and what would you recommend.Also, is there any advantage of SATA over IDE hard drives?
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Feb 18, 2010
I am trying to install CentOS 5.2, and the installation ran out of disk space after running for about 2 hours.I checked the FAQ, and it said 1.2 GB. The disk is 3 GB. The default install was selected, and I think that it checks for sufficient available disk space before installing. Still, it ran for quite a while before announcing that it was out of disk space.The Installation Guide is not very helpful, since there is a blank page where the disk space requirement is supposed to be. I just picked the default installation. A search of the forums on "not enough disk space" did not return much.
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Jun 14, 2010
i am trying to install centos 5.5 x86_64 as a guest OS in vmware server 2.0.2 using netinstall iso. Installation runs fine until the point, when it tries to install selinux-policy-targeted-2.4.6-279.el5.noarch, the whole virtual pc hangs at this.any ideas? i tried to google few things about this, but i have found nothing. this has happened 3 times in row, whole virtual pc always hangs at the same package. i dont have any other problems with vmware, gentoo runs and installs fine in it.i would prefer to do installation using netinstall.iso, it would take a lot of time to download all cds or whole dvd and all i require is a very basic set of packages.
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Jul 29, 2011
I am trying to install Centos 5.6 on a motherboard with a built in Marvel 88SE61xx drive controller.NO drive arrays are configured using the Marvel BIOS configuration utility.During the install CENTOS displays loading MARVEL_PATA driver and it waits and waits and waits.Looking on one of the system message screens I get the following types of messages:qc timeoutfailed to identifyI/O errorLink is slow to respondSRST failed errno=16ata4: reset failed - giving upAny ideas as to how to get CENTOS to recognize the drives connected to the motherboard Marvell controller on a NON-RAID configuration?
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Sep 19, 2010
3 partitions (in order): Windows 7, CentOS and shared data partition.
I need to increase the size of the Windows 7 partition (c:windowswinsxs seems to be something not easily remedied).
GParted didn't work in moving things around (bad sector) so I wiped out its partition (# 2 out of 3) and I was able to increase the size of the Windows 7 partition (I can reinstall CentOS easily and not much work lost).
Except ... no more grub menu (unsurprising). This incantation does allow me to boot into Windows 7.
Is there any way of rebuilding the grub menu short of reinstalling CentOS (5.5)?
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May 9, 2010
I am trying to clone the hard drive to a slightly smaller hard drive in the same computer, same setup.What software or commands do you use to clone the entire system and resize the partition automatically?The original HD is a little larger than the destination HD. The source partition only has about 20 GB in use and the rest is blank.
I have 2 partition, a small 100MB boot partition and another 500GB LVM partition.I can't just clone from the original disk to the new disk. (for another long reason) I need to make an image of the original disk on an external USB drive first, then move that image onto a new disk.I have tried creating an image of the whole disk with Clonezilla, but then the restoration didn't work because the target drive is smaller than the original.
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Mar 28, 2009
I am trying to install CentOS 5.2 on an HP rp5700 desktop unit. These units were originally sold as a Point of Sales unit I believe, but HP also markets it as a high life cycle server for SMB market.I tried to load CentOS on this unit via CD (created from downloaded ISO of course). It presents the initial CentOS banner page and waits for the obligatory "enter" to continue. It begins the boot process up to discovering the PCI stuff and just locks up, no response. I have to power down to restart.Since this does not even get to the point of installing. I am at a loss what to do next. Has anyone had a similar issue with other PCs.The boot stops at the lineACPI: PCI Root Bridge [PCI0] (0000:00)
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Mar 18, 2009
I installed centos 5.1 in my system, it installed perfectly, but when I am trying to install centos 5.2 then it is not let me install.
My system has 220 SATA HardDisk Intel Core 2 Duo 4 GB RAM Intel Desktop Board DG41TY when I try to install centos 5.2, it show me menu bar After hit enter key to install centos 5.2, it show me loading usb drive and then showing some strange font. System is hang after this Can you please tell how I install centos 5.2
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Mar 21, 2009
can anyone know how to install the compiz-fusion desktop theme on centos-5which is very great experience and fun, like Macos X like look and feel.
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Dec 4, 2009
I download the xxxx.tar.bz2 file
extracted it,
when i run ./configure under the directory i get the following error code...
i even followed the link http://wiki.winehq.org/WineOn64bit
also http://forum.winehq.org/viewtopic.php?p=28622&sid=17383eb0b922b2c230238f9ab50b265a. and several googling.
i think the architect of the OS and the wine is not matching.
So guide me to solve the above problem.
the output i get on "uname -i"
x86_64
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Oct 1, 2010
i am trying to install this printer on my centos installation and could not i have the drivers but cannot install
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May 1, 2010
I'm running CentOS 5.4 with kvm and 1 Ubuntu 9.10 guest. I haven't gotten any sound from the start. I've done quite a bit of research and troubleshooting but have taken this as far as I can at this point. To start there was no virtual sound card, but after enough digging I found the option in virt-manager that creates that, created a new guest with sound and copied the line from the xml config file to my existing guest. The line I added in virsh was <sound model='ac97'/> And the virtual sound card now shows up properly in the guest, but still no sound in the guest. Sound works fine in the host so no hardware issues.
Next I followed the instructions here: [URL].. making sure to check the volume controls and user permissions, still no sound. I read somewhere on the net that SElinux messes up the sound, so I disabled SElinux on the host for testing purposes, but no joy. I also tried using modprobe snd-pcm-oss on my host but that didn't return any output so I'm not sure if that did anything. In short I've been shooting the dark trying different things and if anyone has an idea I haven't tried yet, I'd like to hear it.
I also found this on the net: [URL]... But this seems to refer to slackware and I have no idea which config file they are even talking about. I don't think it applies to me but who knows?
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Dec 9, 2009
I don't want to use image file as disk, but would like to allocate a disk for guest os. say it's /sda6, then do I need install guest os on host os? or can I install while the system is booting and only import a guest os from that? Do I have to mount the disk?
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Jan 10, 2010
i just experimented with virtualbox to make a vps on my centos machine, now i have a question in mind, since this was my local machine so i was able to install the guest os using the CDrom but when i have a server in the datacenter, and i create a vps on it and i am thousands of KM from my server. how will i install the guest os on my VPS on my server in the datacenter.
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Jul 13, 2010
1) Installed Cent os 5.4 in my system (name it as "guest os").
2) Downloaded the full kernel source, and patched the vanilla kernel to export symbol table (2 line change) [URL] (Yes I know that kernel should not be touched, if touched you should not seek help here . but I felt I didnt do any big change in kernel there). Besides we unset the config_smp & config_preempt parameter to make the kernel as not SMP and not preemptive .
3) Then compiled and booted with the new kernel 2.6.18, everything went fine . Now my gust os box is loading fine and I dont have any issue .
So now I need to install this above machine as guest OS in one more XEN machine cent os 5.4 (name it as "xen os").
So we created the image out of the above box "guest os" and added it as VM in xen os . But while booting it always hangs under some error like "/usb device sort of thing" (I dont have the screen where it hangs, but I do have the equivalent xen log from XEN OS linked to [URL] .
1) what the error is, and what need to be changed in my guest os build .
2) In general I am new to this VM and XEN installation, to be frank I am completely zero . Does changing the native os 5.4 to guest os need any change in kernel or something.
3) Does this case possible, install plain cent os in xen machine. After then patch the kernel in VM and boot with that . I guess it should not be possible ...
4) If possible guide me to some documentation where I can learn few basics over this.
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Jan 11, 2011
I have a new public mail server running under Vmware Server 2.0 installed on Windows Server 2008. I'm not satisfy about performance, virtual machine has got 3gb of ram and 2 virtual cpu. Physical machine has got one intel xeon cpu 2.4ghz quad core, 8 gb of ram and 3 hdd 500gb raid5. I already set this option: Fit all virtual machine memory into reserved host RAM. How can I increase performance? Are there any kernel build for virtual installation?
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Jul 5, 2009
U have spent 4 days trying to configure my router thinking that it is my router that is not working but when I go to my dynamic dns or my static ip address it takes me to my admin router on the local computers.when I type httpd it says it cannot bind to port 0.0.0.0:80 i checked it is set up to listen to port 80 this is really confusing me i am beginning to think the people who built my server did not set it up properly if i go to localhost or 0.0.0.127 it goes to the apache default page fine.I have not changed anything since it wad installed except the centos 5 updates any ideas?When i login my password is root and the password is the default I have changed nothing else on the system as I still have no clue about it.Just to clarify on my router I have port 80 and port 443 set to my static ip address is this correct or should it be the eth0 Bcast ip address?Can anyone give me an idea of what i need to check? On my router I have set up port 80 and port 443 and dynamic dns and static ip address.Sorry I am totally new to linux never used it before would be nice if anyone has any ideas how i can proceed with this.
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