November 6, 2018
A while ago I stumbled upon podman, which touts itself as an alternative to
Docker. Not only does
podman not use any big fat daemons™ but it makes it rather easy to run
containers in a user-namespace, i.e. with greatly restricted privileges on your system. The fun
thing is: you are still
root within the container!
October 5, 2018
Trying to implement some sort of automatic versioning based on your git commits or tags is not as
easy as it should seem. The idea is to use a feature built into the revision control system to
modify your project files and increment version counters automatically or embed commit information
into software builds - in my case: the
--version output of Go applications built with
September 19, 2018
I am supposed to have a 500 Mbps internet line at home. Last week it really didn’t feel like that
(again). Pages would take ages to load, streams would stutter miserably or simply abort and
downloading OS updates simply timed out. So I set out to measure my actual bandwidth over a longer
period of time.
March 3, 2018
It is becoming common knowledge that you should use two-factor authentication
whenever possible. Some services allow the use of TOTP apps on your smartphone,
some only want so send you SMS codes .. and others use proprietary tokens.
January 19, 2018
Trying to install VMware ESXi on a number of Intel Bay-Trail boards apparently fails with a hanged installation right after a message like Relocating modules and starting the kernel. There’s multiple forum posts around the internet where people suggest various workarounds, which never seemed to work for me.
One suggestion which stood out to me as most promising was completely disabling the internal graphics chip and using a dicrete graphics card in the PCI Express slot.
June 29, 2017
This is an update over my earlier post about PXE booting. I’ve learned a few more things and refined some rough edges.
Update: By now I’ve learned even more. See homelab/bootstrap for an updated guide.
My Motivation is similar to the last post: I started building my homelab with virtual machines. Most of them are based on a minimal CentOS 7 installation, and as such I have a lot of very similar systems. Yes, I could probably use containers to great effect. But I prefer the separation/isolation that I get from virtual machines on ESXi.
April 6, 2017
I used KeePassX to generate a new, 24 character password with all character types enabled. This was supposed to replace the default
ADMIN/ADMIN combination for IPMI on my ESXi box. So I opened the appropriate page through a browser, navigated to
Configuration > Users and modified the ADMIN user.
It happily accepted the new password with no warning whatsoever and I logged out to test it .. oh well .. it didn’t work.
March 9, 2017
Today I set out to setup a local CentOS mirror for quicker PXE installations of my virtual machines. In the long run this will probably be superseded by a Spacewalk machine (update: discontinued on May 31, 2020) and until now netboot.xyz has served me well. For the time being I just wanted a faster alternative.