2
votes
2answers
353 views

xen creating a new virtual machine with bridge networking

I am using CentOS 6.5 64 use this tutorial to setup Bridge [root@CentOS ~]# brctl show bridge name bridge id STP enabled interfaces xenbr0 8000.08002754b3fa yes ...
0
votes
0answers
54 views

Unison and Resolving Conflicts with diff3

I installed Unison because I wanted a two-way synchronization to my DRBD directory, my logic is a little bit complicated so I am stressing on the problem itself and ignoring unneeded information, ...
2
votes
2answers
105 views

DRBD Madness on Virtual Environment (XEN)

Right now I am using DRBD to replicate two directories (/var/www and /var/spool/mail) on two different XEN VPS's and they're 7000 Miles away from each other! on the top of that I am using a ...
0
votes
0answers
45 views

GFS2 without LVM on CentOS 5.7

I am using DRBD and I just synced 40GB between 2 nodes for the last 3 days and I am using GFS2 without LVM, I formatted the partition just fine but now I can't mount it /sbin/mount.gfs2: invalid ...
0
votes
1answer
93 views

Cluster IP Address in HA Environment CentOS (5.x)

I am in the process of installing High Availability CentOS (5.x) setup with Fail-over capacity, I have 2 identical XEN VPS's in two different locations, every VPS has a private IP and a public IP, I ...
1
vote
1answer
95 views

Installing DRBD on XEN CentOS 5.8 (Stable)

I am trying for days to achieve HA with fault tolerance between my existing two XEN VPS's one located in Tokyo and the other located in US (both have the same setup and the same configurations, I am ...
1
vote
0answers
457 views

CentOS 6.5 Xen Virtual Machine Issue 'this function is not supported by the connection driver'

I am trying to segment my system into a number of virtual machines but just cant seem to get this to work. I think I am close but not quite there. I have install xen, virsh, xl etc and I am using ...
0
votes
1answer
2k views

How to change boot device on vm installed on Citrix Xen Server to DVD

I have installed Centos 6 on my new Xen Server (XenServer release 6.2.0-70446c). Everything went smooth. System is working fine but now I want to change boot device on that VM to boot from DVD (iso ...
0
votes
0answers
74 views

Xen dom0 rebooting

I am using Xen version 3.0.3 and running 4 domU's on this.(guest OS is windows) suddenly my dom0 reboots for no reason.This is happening frequently for last 2 days. I checked xend and system logs but ...
0
votes
1answer
336 views

How can I install a new xenserver dom0 kernel?

Since Citrix released the full source code to xenserver 6.2 I've been evaluating it. It's works very well, but there is only one problem that I haven't solved. Unfortunately, Citrix do not supply the ...
0
votes
1answer
642 views

Cannot change date/time on virtualized centos install without a reboot

I have a dedicated web server which is running centos with xen virtualization that has centos installed on the vm. I do not have access to the parent server, I can only manipulate the vm, of which I ...
0
votes
2answers
558 views

How to reset root password CentOS (domU) hosted in Xen?

Need help on resetting root password of a CentOS which is a guess OS (domU) in XEN. I already tried to get to grub but it doesn't display or maybe using a different grub (pygrub). Thanks in advance.
0
votes
2answers
2k views

CentOS 6 Xen guest fails to boot after 'yum update'. Kernel?

I Seem to be having an issue with a Xen guest not booting after a yum update. DomU Configuration: #kernel = '/boot/solus-vmlinuz' #ramdisk = '/boot/solus-initrd.img' bootloader = ...
1
vote
0answers
53 views

Domus Memory Used Issue With Xen On CentOS

Anyone know why I'm receiving this error? I compiled latest libvirt from source, I also tried with various rpm. I would like to get memory used by domus and it looks like it's not working with Xen 3 ...
0
votes
1answer
77 views

Outbound traffic from domU shows dom0 IP address

I am having a problem with Xen where all outbound traffic from domU's are showing up as if it was coming from the dom0. Traffic passes both ways without a problem. I do not have NAT enabled. I am ...
1
vote
1answer
76 views

saving loaded kernel modules

I did the following in command line: modprobe ipt_LOG modprobe ipt_multiport modprobe ipt_state modprobe ipt_limit modprobe ipt_recent modprobe ipt_owner modprobe iptable_nat modprobe tun/tap ...
0
votes
0answers
49 views

enabling modules for a kernel

I have a KVM/XEN VPS and would like to enable the following modules: ipt_LOG ipt_multiport ipt_state ipt_limit ipt_recent ipt_owner iptable_nat tun/tap iptable_nat ipt_MASQUERADE ipt_POSTROUTING PPTP ...
0
votes
1answer
435 views

Issues migrating a CentOS 4 xen guest to VMWare

I am migrating a xen guest. It is running a CentOS 4. I am using the same steps that have worked in the past for our RHEL5 and RHEL6 based systems but for some reason, I'm getting errors. Here are ...
0
votes
1answer
204 views

Which Apache mods do I need on my small VPS? [closed]

I am very sorry for this question, but I really am a noob, and searching didn't help What is the difference between .so and .c mods? Next, once again my apologies for such an exansive, generic, ...
0
votes
0answers
584 views

XEN Domain crash - kernel panic

I have a server with CentOS 5.8.Final, running the 2.6.18-308.4.1.el5xen kernel. I installed the Virtualizorpanel 2 months ago and my VPS are OK, but yesterday one of my VPS crashed. I changed theRAM ...
1
vote
1answer
727 views

Share IP from Xen (XCP) Dom0 to DomU

The situation: Xen Cloud Platform installed on a dedicated server. It is assigned a batch of IPs. I want to create a CentOS 6 VM (domU) that is running a WHM/Cpanel install, and has access to the ...
0
votes
2answers
479 views

Why is my VPS is using 4.5GB of RAM, even if no services are running?

My VPS is using much RAM. To identify the problem I stopped literally every service, the VPS is still using 4.5GB of RAM. The VPS is running on XEN, so the RAM is not shared. This is the output of ...
3
votes
1answer
471 views

ruby: invalid opcode

There's a fairly complex application than runs on two VMs (on Xen). Both VMs run CentOS 6.2 with the exact same packages and configuration for every application running (minus networking which is ...
0
votes
1answer
210 views

Xen dom0 crashed

Lots of questions this week, I got this error on dom0, then the server crashed (according to /var/log/messages): Jun 22 10:02:09 453 dhcpd: DHCPACK to xx.xxx.xxx.xx (xx:xx:xx:xx:xx:xx) via eth0 Jun ...
0
votes
1answer
297 views

Running OpenVZ virtual servers within a Xen XCP vritual server? Bad practice?

I have a 1 server with 8GB RAM and 2xQuadcore Processors. It currently has the Xen XCP installed on it, and centos6.2 x64 running on a virtual machine. I have a server control panel software that I ...
1
vote
0answers
51 views

Linux webserver reboot issue

I've webserver, it works fine when there is no load into it. when I've load onto it and try to restart httpd server gets reboot itself or sometimes it automatically get reboot It is Xen HVM with OS ...
1
vote
1answer
824 views

Sudden problems with iptables not running

I've got a sudden issue with iptables not running on my CentOS 5.8/DirectAdmin XenVPS. All I have done today is install PHP APC and run an update (although I admittedly didn't pay much attention today ...
-2
votes
1answer
122 views

Xen hypervisor maximum domu support [closed]

Can anyone please let me know that what are Xen Hypervisor 4.x limitations. How many virtual machines i can create with what memory and cpu?
0
votes
1answer
310 views

Xen 4.1.2 unable to boot

I have installed Xen 3.1.2 perfectly, and it's running fine. However since that version is way outdated I just updated it to 4.1.2 by adding the gitco repository and then yum update. It installed ...
1
vote
1answer
377 views

Creating Xen backups

I'm looking for a way to create Xen (HVM) backups, using LVM. I know xm save but that is a) inefficient space wise, b) the VM will shut down. I found rsnapshot which is able to create an LVM snapshot, ...
0
votes
1answer
681 views

I/O Xen Server on disk filesystem ext4

I have a Xen Server 6.0 and one disk (2TB) report I/O error my vm is Centos 6.2 (filesystem ext4) end_request: I/O error, dev xvdc, sector 896084224 end_request: I/O error, dev xvdc, sector 896084312 ...
2
votes
1answer
764 views

Need any hints regarding Linux host's file-system going to read-only mode

I have a CentOS 5.x Linux guest running on a XEN (Citrix) server, and from time to time it mysteriously goes into the read-only mode. I've checked the file-system for errors, nothing suspicious ...
1
vote
0answers
267 views

CentOS 5.7 Xen Host

Here is the situation: I am running CentOS 5.7 x86_64 with Xen 3.0.3 (xen-3.0.3-132.el5_7.2.x86_64) and the Xen kernel (2.6.18-274.12.1.el5xen). The server has 8GB RAM, and an i7-950 @ 3.07Ghz. I am ...
0
votes
2answers
396 views

CentOS randomly restarts

My CentOS 5.7 server randomly restarts. I've found the following in /var/log/messages: Jan 24 01:54:53 m38501 dhcpd: DHCPINFORM from 80.xxx.xxx.xxx via eth0 Jan 24 01:54:53 m38501 dhcpd: DHCPACK to ...
0
votes
1answer
2k views

How to create a Centos Xen domU on Debian Squeeze using xen-create-image

I have a Xen host system based on Debian Squeeze, and installed xen-tools. I would like to setup a CentOS domU using xen-create-image. xen-tools already 'knows' of CentOS-5, but I cannot seem to get ...
0
votes
1answer
694 views

Xen Disk Performence Issues

I'm currently using Xen PV on CentOS 5 with my domU's as flat files running on a hardware RAID controlled (write cache enabled) formatted with XFS. On the dom0 I can get about 500MB/s in a 2GB dd ...
2
votes
2answers
1k views

Boot hanging on SELINUX?

SELINUX is disabled on this this machine (which is a CentOS instance under Xen) but the boot process gets to a point that mentions an audit and SELINUX and then hangs. Is it ever going to come back? ...
1
vote
0answers
76 views

CentOS/Xen Hypervisor Completely Locked-Up, Where To Look For Answers

Our hypervisor server running CentOS and Xen completely locked-up just right now. The screen was completely blank. I had to hard reboot, and everything came back up normally. No indication of a ...
4
votes
1answer
2k views

Disabling IPV6 on Centos6

I want to disable IPV6 in the new Centos6 virtual server I have just setup in Xen. I have already followed the instructions here and then rebooted/restarted networking. Update: followed the below, ...
0
votes
1answer
596 views

No Gigabit NIC card in Xen 3.0 CentOS 5.6

I have a CentOS 5.6 linux host running two Windows Server 2008 R2 VMs in Xen. The problem I'm having is the NIC card in any VM shows up as 100Mbps and not 1000Mbps. I would like to be able to give the ...
1
vote
3answers
2k views

Centos Xen resizing DomU partition and volume group

I have a setup like so: Dom0 LV | DomU Physical Disk | | XVDA1 XVDA2 (/boot) (DomU PV) | VolGroup00 (DomU VG) ...
1
vote
2answers
517 views

Centos 6.0 + Xen

So now that Xen is no more in Centos' repositories, should I still use it or migrate to KVM? I have to say that I am not very inspired by KVM at the moment and I've gotten pretty familiar with XEN ...
1
vote
4answers
519 views

Transient network dropout for Xen DomU's

We've got a CentOS server running a cluster of virtuals. Occasionally the cluster's internal network drops out for a minute or so ... and then comes back. The problem is somehow related to the ...
1
vote
1answer
606 views

CentOS 5.5 needs xenblk.ko, what's the easy way?

I'm taking a class on cloud computing and we're using CentOS 5.5 with xen. When I tried to run mkinitrd to build a vm, I got a message that xenblk was not found, and indeed I can't find the xenblk.ko ...
0
votes
0answers
403 views

CentOS 5.5, XEN, black screen when loading OS

This is a very weird bug. I have installed CentOS 5.5 on many computers. On one of them I have done the reinstallation several times, sinces I wanted to fix a clean install I have installed OpenNebula ...
0
votes
1answer
327 views

Networking setup under Xen 4.1

Looks like Xen 4.1 went through some major changes as far as networking goes. With that said, I have two NICs on the host. eth0 and eth1. I want dom0 to be accessible via eth0 and only eth0. I want ...
1
vote
2answers
453 views

Java process eating up all the “low memory” on my Xen VPS

This is on Centos 5, Linux 2.6.33.3-xenU #1 SMP Wed May 5 00:49:22 UTC 2010 i686 i686 i386 GNU/Linux I have a java server process which I normally run with the following configuration -Xmx700m ...
0
votes
1answer
983 views

xen network-bridge makes my server unreachable

Hey, I have a problem with xen networking. I'm using centos 5.5 64bit, and have installed xen 3.4 from gitco (unofficial) repository, along with libvirt and xen-tools. I got it previously working on ...
3
votes
2answers
3k views

XenServer Converting HVM to Paravirtualised

Recently I have been tasked with the daunting process of converting a setup of HVM enabled VMs (running on Citrix XenServer 5.6.0) into PV (paravirtualised) containers. The constraints of the project ...
2
votes
1answer
3k views

Disk IO causing high load on Xen/CentOS guest

Background I'm having serious issues with a xen based server, this is on the guest partition. It's a paravirtualized CentOS 5.5. I'm not sure if it's hardware or software related, or in between ...