Pawel Debski – SW Development and other thoughts

http://econsulting.pl/ Java, Microsoft.Net C#, TIBCO, WebMethods, Oracle, Informatica

Xen virtualisation support dropped by Red Hat 6 and therefore in CentOS 6

We are preparing the upgrade of our Linux infrastructure and… bdzionk: Xen support dropped by Red Hat 6 and therefore in CentOS 6:

Maybe it is a RedHat play or maybe Xen inherent design flaw as pointed-out below:

“Linux kernel developers say no to Xen”

http://searchenterpriselinux.techtarget.com/news/1511180/Linux-community-turning-away-from-Xen-virtualization

Linus Torvalds: “The point? Xen really is horribly badly separated out. It gets way more incestuous with other systems than it should. It’s entirely possible that this is very fundamental to both paravirtualization and to hypervisor behavior, but it doesn’t matter – it just measn that I can well see that Xen is a f*cking pain to merge. So please, Xen people, look at your track record, and look at the issues from the standpoint of somebody merging your code, rather than just from the standpoint of somebody who whines “I want my code to be merged”.”

http://lkml.indiana.edu/hypermail/linux/kernel/0906.0/00870.html

The fact is that nowadays using Xen with CentOS is pain in the a.s so we’ve decided to give KVM a try.

Apparently Xen developers started to address the issue as evidenced in http://blog.xen.org/ – despite dooming voices Xen thrives and perhaps in the future we we’ll be back to it.

Here is a nice How-to on KVM and #CentOS6:

http://www.howtoforge.com/virtualization-with-kvm-on-a-centos-6.3-server

Please be sure to read #SELinux remarks and links in the comments section of the article – leaving SELinux enabled considerably increases security of the whole installation and in my opinion this is the professional way to do it.

Apparently it is possible to use virtualisation with SELinux: 

http://www.centos.org/docs/5/html/5.2/Virtualization/chap-Virtualization-SELinux_and_virtualization.html

I wonder which one is more SELinux-friendly: KVM or XEN? Any opinions?

Finally a few additional links

For those who’d like to stick with Xen:

Comparing XEN and KVM (in Polish):

Written by Pawel Debski

2013/05/12 at 18:08

Posted in Uncategorized

Tagged with , , , ,

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