HowTos/KVM

For the impatient, here is our simple script. We’ll explain it afterwards. This is assuming that you’re on a 192.168.1.0/24 network with no DHCP server.

#!/bin/sh

PATH=$PATH:/usr/sbin:/sbin

sudo brctl addbr br0

sudo ifconfig eth0 0.0.0.0

sudo brctl addif br0 eth0

sudo ifconfig br0 192.168.1.120 netmask 255.255.255.0 up

sudo route add -net 192.168.1.0 netmask 255.255.255.0 br0

sudo route add default gw 192.168.1.1 br0

sudo tunctl -b -u john

sudo ifconfig tap0 up

sudo brctl addif br0 tap0

export SDL_VIDEO_X11_DGAMOUSE=0

sudo iptables -I RH-Firewall-1-INPUT -i br0 -j ACCEPT

qemu-kvm ~/win2k.img -m 512 -net nic -net tap,ifname=tap0,script=no

via HowTos/KVM – CentOS Wiki.

Is VMware’s dominance of the virtualization market under threat?

But VMware has dominated the virtualization market for so many years that the massive shift found in the survey may take longer than expected, if it happens at all. The virtualization layer, primarily composed of VMware software, has so many hooks into security, backup, automation, disaster recovery and various management tools that swapping hypervisors is no simple matter, argues an analyst who read the results of the survey, but was not involved in conducting it.

via Is VMware’s dominance of the virtualization market under threat?.

And here’s the conclusion.

VMware shops are certainly kicking the tires on Hyper-V and deploying it at least in test and development scenarios, and Microsoft is trying to lay the groundwork for both small businesses and enterprises to switch from VMware to Hyper-V. If 38 percent of businesses do change primary hypervisors within the next year, the folks in Redmond are likely to be the major beneficiary.

Re-read The Partition Table Without Rebooting Linux System

partprobe command is part of GNU parted software. parted is a disk partitioning and partition resizing program. It allows you to create, destroy, resize, move and copy ext2, ext3, linux-swap, FAT, FAT32, and reiserfs partitions. It can create, resize and move Macintosh HFS partitions, as well as detect jfs, ntfs, ufs, and xfs partitions. It is useful for creating space for new operating systems, reorganising disk usage, and copying data to new hard disks.

via Re-read The Partition Table Without Rebooting Linux System.

# partprobe /dev/sdX

cPanel Inc.

cPanel is the industry leader for turning standalone servers into a fully automated point-and-click hosting platform. Tedious tasks are replaced by web interfaces and API-based calls. cPanel is designed with multiple levels of administration including admin, reseller, end user, and email-based interfaces. These multiple levels provide security, ease of use, and flexibility for everyone from the server administrator to the email account user.

via cPanel Inc..

$475/license for a single server per year.

Quagga Software Routing Suite

Quagga Software Routing Suite.

Quagga is a routing software suite, providing implementations of OSPFv2, OSPFv3, RIP v1 and v2, RIPng and BGP-4 for Unix platforms, particularly FreeBSD, Linux, Solaris and NetBSD. Quagga is a fork of GNU Zebra which was developed by Kunihiro Ishiguro. The Quagga tree aims to build a more involved community around Quagga than the current centralised model of GNU Zebra.

I’m not sure I want to support this.  This is what Cisco et al. do and they do this very well.  As a science project maybe but why would a small or medium biz need to do OSPF or RIP?  I need to think about that question for awhile.

How Can I Justify Using Red Hat When CentOS Exists? – Slashdot

How Can I Justify Using Red Hat When CentOS Exists? – Slashdot.

by Paska (801395) Alter Relationship on Sunday October 30, @05:20PM (#37888510) Homepage

CentOS’s release schedule has been really struggling recently. Release 6 was almost edging a 250 day delay over Red Hat.

CentOS have still to announce an official date for 6.1 to be released, which Red Hat released back on May 19th. There is a lot of uncertainty regarding CentOS releases and as such in my opinion makes CentOS not the ideal choice for the enterprise.

Other advantages are Red Hat’s support services and the Red Hat Network (RHN) are second to none. RHN alone is what convinced us to pony up money for licenses.

The gist of the advantages are: better support, quicker updates/security fixes, easier and centralised management of multiple servers with the only disadvantage being a price tag.

Interesting discussion about this over on Slashdot.