I am currently in the process of creating a home server, made up of several virtual machines, each running a different type of server (i.e. a file server, a multimedia server, a firewall and a print server as of now). Today I discovered this new software, Zentyal, which looks interesting for system and network administration. However, I haven’t understood one thing: can it be used only with its preconfigured packages or can it also be [...]

I am trying to virtualize an Ubuntu machine using VMWare vCenter Converter, but ran into permissions issues. I followed the instructions of part 1 and 2 on this page but when I got to “For Ubuntu operating systems further configuration is needed” I started running into trouble. I’m decent at Linux, but I’m not an experienced sysadmin. How do I Target the specific user you will be using and assign it user id 0/group 0? [...]

How can I install Centos 6 on SCSI hard drive under Hyper-V? I added a IDE drive to boot from but CentOS doesn’t recognize SCSI drive during install. How can I fix this please? Asked by Jake Using Linux Integration Services for Hyper-V is the solution. Last version is really easy to install and there is only one problem, After upgrading Linux Kernel OS will crash while booting. to fix this you can switch back [...]

I added a Volume group in Proxmox VE as Storage for KVM VMs. A new Logical Volume will be created for each VM, but in Proxmox VE under The Defined Storage which shows list of created Logical Volumes I see my Logical Volume marked as RAW format. Is this a RAW image or a Logical Volume (LVM)? But my main question, Does this really avoid the overhead of going through the filesystem layer on the [...]

I’ve installed WindowsServer 2008 R2 on the computer with Xeon3430 2.40GHz processor. VT was activated in BIOS. Hyper-Role was installed and a VM could be created and started. Running pidenu32.msi-tool results, that this processor type doesn’t support VT. What is wrong? Asked by msh That’s correct. The virtual processor that ran the program does not support VT. Intel x86 CPUs are not fully virtualizable, and once virtualized no longer support virtualization. You can’t virtualize again [...]

I’m following this construction to install (version 4.1.2) on a CentOS 6.2 (x86_64) system. When I use this command yum install http://au1.mirror.crc.id.au/repo/kernel-xen-release-6-3.noarch.rpm I face this error: Loaded plugins: fastestmirror, security Loading mirror speeds from cached hostfile * base: ftp.sh.cvut.cz * extras: ftp.sh.cvut.cz * updates: ftp.sh.cvut.cz Setting up Install Process Cannot open: http://au1.mirror.crc.id.au/repo/kernel-xen-release-6-3.noarch.rpm. Skipping. Error: Nothing to do there is a third-party repository with some mirror list, but I don’t know if I could use them? [...]

I recently setup a virtualization server for the small company I’m running. This server runs few virtual machines that are used for development, testing, etc… My business partner works from a remote location, thus I also installed a vpn server on the virtualization host to make it possible for him to safely reach the company services. Moreover, again on the virtualization host, I installed bacula to perform the backup of the data. Is it advisable/good [...]

I’m hoping for a high level discussion of this problem I know is quickly approaching my application. I have a server that binds on a specific port and manages TCP Sockets from my clients. I know that it is common practice to use VMWare to virtualize servers and run multiple servers at once. How can a single server design be changed to support multiple servers? Multiple servers can’t bind to the same port. If I [...]

Our company gives a VM for each developer which is exclusive for them but doesnt give root access. I am planning to ask for root password so I can install different softwares on the VM. Just want to make sure, having a root password on VM doesnt give me any control on the host system. Asked by Medicine Nope. It shouldn’t give you any host access, assuming you’re on one of the major virtualization suites [...]

Is there a way to know if the machine I’m working on is virtual or physical? (I’m connecting with RDP to the machine. If it’s a virtual machine it is working and handled by VMWare). Thank you in advance. Asked by n/a If it’s Windows, just have a look at the hardware screens. It’ll have a billion and five VMWare-branded virtual devices. Answered by Oli Check more discussion of this question. Bookmark on Delicious Digg [...]