KVM or Xen
Over at Virtualization.com I asked the crowd what they planned to do when RedHat plans on finally migrating from Xen to KVM .. you can have your say too . :
SquashFS errors during FC11 install
My FC10 to FC11 yum upgrade got stuck on a zillion dependencies .. well actually libssl and mysql from Remi .. but from there it’s a whole chain of other things. So I had the great idea to go for the F11 Live CD, the LiveCD works like a charm,, only upon trying to install the live CD to my OS partition it started failing on me with a bunch of squashfs errors ,
Webbased Administration Interfaces
Dear Hardware / Appliance and any other kind of being that creates web interfaces to manage devices remotely. Pleaze keep in mind that plenty of these kind of machines are being managed from behind a ssh tunnel so people often connect to them using http://localhost:8080/ where 8080 locally is mapped e.g. via ssh to the port 80 on the remote port.
If your application does anything closely to rewriting the localhost:8080 part to localhost it will fail and I as a potential purchaser of your device wil vote against buying your stuff.
(This is specifically annoying if I want to tunnel 16 KVM/IP boxen to my localhost 8001:8016)
DRBD2, OCFS2, Unexplained crashes
I was trying to setup a dual-primary DRBD environment, with a shared disk with either OCFS2 or GFS. The environment is a Centos 5.3 with DRBD82 (but also tried with DRBD83 from testing) .
Setting up a single primary disk and running bonnie++ on it worked Setting up a dual-primary disk, only mounting it on one node (ext3) and running bonnie++ worked
When setting up ocfs2 on the /dev/drbd0 disk and mounting it on both nodes, basic functionality seemed in place but usually less than 5-10 minutes after I start bonnie++ as a test on one of the nodes , both nodes power cycle with no errors in the logfiles, just a crash.
Weird Scenes inside the Tarball, Midnight Commander woes
I was transferring an apt repository to a remote site using the tarbal I created locally. When the first machines tried to do an apt-get update from that repository they failed to getthe package list.
1. Jun 24 11:01:28 10.99.2.253 root: Failed to fetch <a href="http://10.99.0.1/repo/ntc/i386/base/pkglist.CentOsDistro" title="http://10.99.0.1/repo/ntc/i386/base/pkglist.CentOsDistro">http://10.99.0.1/repo/ntc/i386/base/pkglist.CentOsDistro</a> 404 Not Found
2. Jun 24 11:09:29 10.99.2.253 root: Err <a href="http://10.99.0.1" title="http://10.99.0.1">http://10.99.0.1</a> i386/CentOsDistro pkglist
However at first sight the appropriate files were in place
Twitter Woes
This one has been sitting in the drafts for too long, but frankly there’s not much I have to add.
Twitter is acting weird , we all know that .. but the following movie really beats everything.
Yes that’s right what you are seeing is me logging into my twitter account, checking my @krisbuytaert
messages and seeing the @vti messages and then even taking full control of their (in the mean while deleted) account.
resolv.conf problem
Collegue troubleshooting a machine that he couldn’t log into anymore
root@Validation_Radio3_Ku_VN1:~# cat /etc/shadow\
/etc/resolv.conf generated on 20090604022133 by\
/etc-ro/rc.d/resolvdotconf.pl
nameserver 192.168.104.1\
Really folks .. Everything is a fine dns problem :)
PS. Yeah yeah .. the real problem was a filesystem corrupted
Told Ya sooo
By now everybody and their neigbour has realized that indeed Everything is a funky dns problem, Frank is giving talks about it at ZooCamp, and Serge figured out the hard way the downtime of planet.geekdinner.be was due to a dns problem :)
But I told you different things before … and some of you listened others are still reinventing the wheel as we go …
Matt A. points out that the OpenBravo folks realized that one should try to build on top of Open Source projects rather than modify core code ..
ZooCamp
Last saturday was ZooCamp , also known as Barcamp Antwerp II
The location , the Antwerp Zoo, was the same as for the last CloudCamp Antwerp edition, so I was already pretty familiar with the location.
Lots of new people at ZooCamp and also a bunch of regulars..
My 4th barcamp and the 2nd where I didn’t do a presentation, I hope the fact that Inuits was sponsoring ZooCamp made up for that.. contributions can be done in different forms, and you can’t always keep coming up with new topics.
Puppet Meetup Leuven
As Teyo will be in Leuven (Belgium) next week for the training , some folks had the idea to meetup after the training for a Puppet Users Meetup.
So the plan is to meet for Drinks and Puppettalk, next week wednesday as of 20u00 in the Domus in Leuven
I hope to meet a bunch of you there !
PS. Feel free to spread the news.
PPS. There is a chances I won’t make it myselve which shouldn’t keep you folks back :)