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).

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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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 0.0.0.0:80
[Sat Sep 20 20:47:10 2008] [warn] (61)Connection refused: connect to listener on 0.0.0.0:80
[Sat Sep 20 20:47:11 2008] [warn] (61)Connection refused: connect to listener on 0.0.0.0:80

How do stop all these warning messages flooding my Apache log files?

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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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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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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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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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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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