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Linux & Unix Virtualization Guides

Linux and Unix Virtualization tutorials for creating a virtual machines (VMS), installing guest operating system (OS), storage device, and computer network resources. The main focus is on KVM, Vmware, LXC, FreeBSD Jails, Xen and related technologies ( rss).

Setup FreeBSD Jail With ezjail

How do I setup operating system-level virtualization that allows me to partition my FreeBSD-based server system into several independent mini-systems called jails.? I'd like to set one jail for mail and another for web server via 2 public IP address.
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FreeBSD Jail Allow Ping / tracerouter Commands

I'm not able to ping from FreeBSD prison (jail). I'm able to resolve the names or use ftp / http for ports but ping and traceroute access is disabled. How do I allow virtualized jail application / users to perform traceroute and ping commands?
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Can I Use Multiple Virtualization Technologies Simultaneously under Linux?

Q. I was reading this article and wanted to try out KVM, XEN, VMWare and VirtualBox simultaneously on my desktop system with 2GB RAM? Why I'm not able to use run multiple virtualization technologies simultaneously under Ubuntu Linux? Can a powerful Linux server run multiple virtualization technologies simultaneously?
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FreeBSD: Nginx Virtual Hosting Configuration

Q. How do I configure Nginx Web server for virtual hosting (host multiple websites under same IP address - name based virtual hosting)?
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FreeBSD Apache Jail: Connection refused: connect to listener on Error and Solution

Q. I'm running Apache 2 server under FreeBSD jail. However, I see lots of warning error messages in /var/log/httpd-error.log as follows:

[Sat Sep 20 20:47:09 2008] [warn] (61)Connection refused: connect to listener on
[Sat Sep 20 20:47:10 2008] [warn] (61)Connection refused: connect to listener on
[Sat Sep 20 20:47:11 2008] [warn] (61)Connection refused: connect to listener on

How do stop all these warning messages flooding my Apache log files?
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How To Upgrade FreeBSD Jail ( OS Level Virtualization )

Q. I've FreeBSD jail configured as explained in man pages using make world options. Now I've upgrade my base FreeBSD 7.0 system to FreeBSD 7 patch level 4. How do I upgrade my Jail (FreeBSD VPS) so that everything get updated inside jail?
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Red Hat / CentOS Linux: Explain Use of Network Interface virbr0

Q. I've installed Red Hat Enterprise Linux 5.2 and I see virbr0 network interface along with my eth0 interface? What it is? How do I disable or remove virbr0?
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Find Out Vmware Server Version Under Linux Server

Q. Under Windows it is pretty easy to find out VMware server version. How do I find out remote vmware server version using ssh client running under RHEL / CentOS Linux 5.x?
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Install VMware Tools In Ubuntu Linux ( VMwareTools-1.0.5-8017.tar.gz file )

Q. How do I install VMware tools (virtual server tools) in Ubuntu Linux to improve the performance of the guest VPS (VM machine) system?
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Explain: Tier 1 / Tier 2 / Tier 3 / Tier 4 Data Center

Q. What is data center tiers? What is tier 1 data center? Which tier / level is the best for maximum uptime?
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