Linux

http://wiki.centos.org/PackageManagement/Yum/Priorities how not to mix packages from different repos in RHEL/CENTOS

http://xgu.ru/wiki/Xen very good summary documentation with a lot of references. (need to say that this page is better than original from page from xensource )

http://dev.centos.org/~tru/ pre-build images for CentOS im minimal,LAMP and GNOME-desktop config (saves your time). Images are with modified kernels

http://www.developerweb.net/forum/showthread.php?p=22844 echo “you need a copy of socat, ( yum install socat) "

http://www.novell.com/communities/node/2640/xen-virtual-machine-monitor-plugin-nagios scripts that show nagious plugin

http://www.bestgrid.org/index.php/Xen:_assigning_PCI_devices_to_a_domain how to “export” raw pci device to xen DomU

http://www.newegg.com/Product/Product.aspx?Item=N82E16813153062 looks like a good candidate for embedded linux networking stuff

http://web.mit.edu/ksplice/ new way (hopefully will be mainstream soon) to apply updates to linux kernel"on the fly", i.e w/out need to reboot. The system is more or less a hack at this moment.

http://www.karan.org/blog/index.php/2005/06/15/upgrading_to_centos4_over_a_remote_vnc_c centos remote install via VNC command line parameters

http://www.jejik.com/articles/2008/04/benchmarking_linux_filesystems_on_software_raid_1/ notes on 3ware 9550XS vs md RAID1 for various filesystems on Linux