Lets celebrate 25 years of DNS

Today, we can celebrate 25 years of DNS. Can we really celebrate? Is the age of /etc/hosts really over?

No, /etc/hosts will last for ever. Why?

  • DNS can only be filtered across orgs with problems
  • There are sill some /etc/hosts freaks not retired yet

From my point of view, the DNS is one of the most reliable systems, it is redundant and thus high-available by design.


Thanks to all those people that designed and operated DNS until today and in the future!

Roadmaps on the Red Hat Summit 2010 in Boston

Finally Red Hat disclosed the agenda of its summit in 2010. For more informations see http://www.redhat.com/promo/summit/2010/agenda/.


Tim Burke of Red Hat will talk about the new features of RHEL6. It sounds like the present, not the future. Does this mean I’m right with my guess that RHEL6 will be released end of June like I wrote in earlier blog article?


Count how many times the word “Roadmap” appears in the agenda. It seems to get even more interesting what Red Hat plans to do. But it is still unsure what kind of new features we can expect in RHEL6. Red Hat just disclosed some snippets of RHEL6 again, this is called Salami-Tactic.

Where is the commitment?

We (the RHEL community) are still missing a clear commitment to us as customers. Only little is known about RHEL 6

Love or hate?

Should the RHEL community love or hate Red Hat? At the end of the day I like Red Hat, they do a lot for the progress of Linux in general and Linux in enterprises in particular. Anyway: Not providing a roadmap makes me and possibly others too very angry. Such a roadmap does not need to necessarily be in detail.

Have fun! Really? Soon we will have!

Kernel questions about RHEL6, ESX support and experiences with F13a3

Still no official informations

Red Hat is still refusing any questions about the features of RHEL 6 and its Linux Kernel. However: Since Vanilla Kernel 2.6.33 vmxnet3 and pvscsi is supported. Fedora 13 Alpha 3 is shipped with a derivate of Kernel 2.6.33.

I still hope that Red Hat is switching to 2.6.33 or back-porting the VMWare code to its 2.6.32 derivative Kernel as known by RHEL 6 Alpha 3.

Experiences with F13a3 so far

Installing F13a3 on a ESX guest – with RHEL5 as “supported Guest OS”  – and enabled vmxnet “enhanced” plus pvscsci as HBA was a smooth experience. No driver disk was needed, no dirty fixes. Just selecting vmxnet3 as NIC and PVSCSCI as disk HBA. Thats the way RHEL6 should work from my point of view.


Since Red Hat released its visualization solution “RHEV”, VMWare and Red Hat are competitors. Is Red Hat willing to include ESX support in its Enterprise Products? My guess is to not to do so, but I’m open for surprises.

The goals

The goal on the long term is to switch from ESX to KVM. However, if you deployed a large ESX farm already and the management members are members of the “ESX-Church” it will be hard.

The mid-term goal is to get rid of those crappy VMWare tools. The current state of this “Tools” definitively proves that VMWare is a Windows shop and  does not take care about Linux virtualization.

Will we have fun? Depends on EMC and Red Hat….