similar to: [libvirt] Set MAC address for host virtual interface?

Hello: According to this list of supported guest on RHEL 5.4 KVM: <http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.4/html/Virtuali zation_Guide/chap-Virtualization-KVM_Restrictions_and_support.html> http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.4/html/Virtualiz ation_Guide/chap-Virtualization-KVM_Restrictions_and_support.html RHEL and some Windows guests are

Hello everyone: I tried following the instructions on this page to set up a VNC server: http://wiki.centos.org/HowTos/VNC-Server I can telnet to port 5901 from the machine itself: # telnet 127.0.0.1 5901 Trying 127.0.0.1... Connected to 127.0.0.1. Escape character is '^]'. RFB 003.008 But, when I try to connect to it from the outside world, I get a connection timeout. My

Hello: I just did a fresh install of CentOS 6.2 on a virtual server. I am trying to configure Postfix but it does not seem to be reading configuration directives from /etc/postfix/main.cf Here is what I did to test it: vi /etc/postfix/main.cf and set this directive: myorigin = hello.world.com postfix reload postconf -d | grep myorigin I get this output: append_at_myorigin = yes myorigin =

Hello: I am wondering if KVM is ready for production for running a Windows Server 2003 32 bit guest. According to the RHEL 5.4 virtualization guide, there is supposed to be a virtio-win yum package, but that was not released. Instead, it looks like that is only available for RHN subscribers. Also, I saw this posting on the CentOS list: --- Quoted from CL Martinez There are freely

Hello: I have a server running Centos 5.4 with KVM. When I specify a MAC address in a guest's XML file: <interface type='bridge'> <mac address='00:00:00:00:10:67'/> <source bridge='br0'/> <target dev='v1067'/> </interface> I get a different answer from ifconfig: v1067 Link encap:Ethernet HWaddr

Hello: I am using kvm on a CentOS 5.4 server. I am trying to install the TunkeyLinux Core appliance found here: http://www.turnkeylinux.org/core I downloaded the ISO file from the web site. Then, I used this command to intall it: virt-install -n tkl-core -r 512 --vcpus=1 --check-cpu --os-type=linux --os-variant=ubuntuhardy -v --accelerate -c /tmp/turnkey-core-2009.10-hardy-x86.iso -f

Hello: Is there a command in virsh to shutdown all domains? I can do one at a time, but that is untenable for a large number of domains. Thanks, Neil -- Neil Aggarwal, (281)846-8957, http://UnmeteredVPS.net CentOS 5.4 VPS with unmetered bandwidth only $25/month! 7 day no risk trial, Google Checkout accepted

Hello: One of my customers asked for access to stop and start their VPS. Right now, I can do that using virsh, but I do not want to give this customer the ability to stop and start all VPSs running on the host. Is there a way to give stop and start control of one VPS to someone? I am using KVM on a CentOS 5.5 host. Thanks, Neil -- Neil Aggarwal, (281)846-8957 FREE trial: Virtualmin VPS

Hello: I have a host running two KVM guests. The guests use br0 and each has a static IP address. I am trying to figure out if there is a way to use snmpd on the host to measure the traffic usage of the guests. I do not want to require anything running on the guests since I do not control them. Looking at netstat -in on the host, I see this info: Kernel Interface table Iface MTU Met

just to follow on my earlier post, i have pointers to a couple commercial C/W manuals for RHEL administration, but both of them use an entire chapter discussing virtualization using Xen. i'm under the impression that RH is firmly in the KVM camp (at least for now), and that learning Xen on red hat/centos wouldn't be as useful as learning KVM. thoughts? rday --

Hello all: Is there a network switch that will give me traffic stats at an IP address level? Right now, I only get statstics at a port level, but that does not help since each of my servers run several virtual machines and I need to measure traffic per virtual machine. Thanks, Neil -- Neil Aggarwal, (281)846-8957, www.JAMMConsulting.com Will your e-commerce site go offline if you have a DB

I just used Nick Mae's well written HOWTO on setting up Cacti on CentOS 4.xto setup Cacti on my CentOS 5.1 system : http://wiki.centos.org/HowTos/Cacti_on_CentOS_4.x I was hoping to add a page or section for CentOS 5.x with the modifications I'm including below. My wiki.centos.org username is "GeneWood" Changes : # Make sure snmpd accepts 'public' as public

I have over 20 guests running on a particular host and the three longest running ones are missing the network device information in their XML description: <interface type='network'> <mac address='54:52:10::f2:c5'/> <source network='local'/> </interface> Compared to the others which have: <interface

Hello: Does anyone know a free or low cost online backup system for CentOS? Thanks, Neil -- Neil Aggarwal, (281)846-8957, http://www.JAMMConsulting.com CentOS 5.4 KVM VPS $55/mo, no setup fee, no contract, dedicated 64bit CPU 1GB dedicated RAM, 40GB RAID storage, 500GB/mo premium BW, Zero downtime

Hello: According to the Red Hat Virtualization Guide, Windows Server 2003 32-bit will only run as a fully virtualized guest on an AMD64 system. I thought I have seen a lot of discussion about running paravirtualized Windows on CentOS. Is that a bad idea? Neil -- Neil Aggarwal, (281)846-8957, www.JAMMConsulting.com Will your e-commerce site go offline if you have a DB server failure, fiber

Hello: I am using a CentOS server as a KVM host using bridged networking for the guest servers. I would like to limit the bandwidth available to a guest. I tried using the tc command, but it is only limiting the download speed to the guest. Is there a way to limit the upload speed from the guests? Thanks, Neil -- Neil Aggarwal, (972) 834-1565 We lend money to investors to buy or refinance

Hello: I am trying to follow the RHEL virtualization guide to set up a bridge on a system running CentOS 5.4. I copied my ifcfg-eth0 to ifcfg-eth0:1 and set its content to this: DEVICE=eth0:1 HWADDR=[The MAC address from eth0] ONBOOT=yes BRIDGE=br1 I then created ifcfg-br1 with this content: DEVICE=br1 TYPE=Bridge BOOTPROTO=static BROADCAST=192.168.2.255 IPADDR=192.168.2.202

Hello: I am looking for a recommendation for a PCI-e RAID card for my server. The server has a PCI-e x16 low profile slot so the card has to be at most 6.6 inches long x 2.536 inches high. I would like to use RAID 5 with 3 drives so I have to have those capabilities. It has to be CentOS 5.4 compatible (Of course!). I took a look at the offerings from 3Ware, but their cards are too long. If

Hi, I need a small help. I am working on a project where i have to monitor network activity of a VM running on KVM. I am interested in how much data is going into the VM and how much data is coming out of the VM. I checked on the net and found out virsh domifstat is the way to go about it. 1. But looks like these stats also include bytes related to control traffic for the VM. Is there a way to

Hello: I am looking at the RHEL 5.4 virtualization guide. According to Chapter 17, if I want to use KVM on my machine, I need to check if it has the constant Time Stamp Counter by running this: cat /proc/cpuinfo | grep constant_tsc When I do that on the server (Currently running CentOS 5.3), I do not get any output. According to the output, that means my system does not have the counter. It