Author Archives: Jens Kuehnel

Thank you Seth Vidal, my first ansible playbook

I was shocked when I heard about Seth Vidal’s death. Of course I use yum daily, but it brought tears to my eyes, when I was reading my  “my TODO List after a install” and realized that Seth was one … Continue reading

Posted in Enterprise Linux, Fedora, Uncategorized | Tagged | 1 Comment

my TODO List after a install

I had to reinstall a couple of machines recently and I had to do the same thing more then once. So I wrote a script,and for my own future self I post it here, as reference. sed -e ‘s:ONBOOT=no:ONBOOT=yes:’ -i … Continue reading

Posted in Enterprise Linux, Fedora, Linux, Uncategorized | Tagged | 3 Comments

Be carefull when updating from RHEL6.1 to RHEL6.4

If you have a RHEL6.1 and try to update to RHEL6.4, you will get some strange errors, about missing libraries. The reason is that ldconfig will not run anymore, because /etc/ld.so.conf.d/kernel-2.6.32-* sepcifies hwcap 0 till RHEL6.1 and RHEL 6.2 and … Continue reading

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Memorymangement is harder than it is known.

After I thought I understood memory manager after all, this comes along. I have a behavior I can’t understand or explain. Let’s see if anyone can solve the puzzle. You have a machine, lets say with 8GB Ram. You only … Continue reading

Posted in Enterprise Linux, Fedora, Linux | Tagged | 6 Comments

RHEL6.4 and NX

Be careful if you update to RHEL6.4 and you are using NX. RHEL6.4 removes the  keymap.dir and this breaks NX at the moment. To fix this, simply do a touch /usr/share/X11/xkb/keymap.dir. It looks like that RedHat will not fix this, … Continue reading

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Todo after a Fedora upgrade

Even with the new fedup tool to upgrade. There are a couple of commands I use always after an upgrade. I suggest you use them too: yum distro-sync package-cleanup –problems package-cleanup –orphans rpmconf -a -fvimdiff rpmorphan Helps to keep your … Continue reading

Posted in Fedora, Linux, Uncategorized | Tagged | 1 Comment

python virtualenv

After joining my local LUG at the python workshop and because I start using more python now. Here some hints and tools that I’m using a lot lately. virtualenvwrapper Install it with pip install virualenvwrapper or yum install python-virtualenvwrapper.noarch. Create … Continue reading

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ArgoEclipse is dead and broken

If you are using ArgoUML and thought “Hey, its written with Eclipse, lets try using it inside Eclipse”. I’m pretty sure you search found ArogEclipse. Please be aware this project looks very dead. I tried to open an perfectly good … Continue reading

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Two enterprise Linux boxes are talking to each other, or not

I setup a  RedHat Enterprise Box that should serve as a httpd server for a Suse Enterprise Server zypper repository and it don’t work. Simple curl also don’t work. If you use curl -1 or curl -3 it works like … Continue reading

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For the Apple hater

I bought an IPhone for my mum this morning and had an interesting experience. Firefox on Mac showed the shop with a  “Please wait” sign, and with Safari the shop was open and ready to order. I Pressed Ctrl+Shift+r for … Continue reading

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