Introduction I’ve been administrating kubernetes clusters but I never got the chance to actually build one from scratch until recently. There are multiple kubernetes distribution out there and mu...
haproxy part 1 load balancing a webserver
Introduction The setup is running on a single machine as a proof of concept. We can move those docker instances into individual virtual machines once we are happy with the results and actually nee...
Protect against a DDOS
How to protect against a DDOS In order to block a distributed denial of service DDOS attack you have several ways to go about it. 1) Block the requests at the reverse proxy level You can stop a ...
Network boot with pxe and ipxe
Introduction Network boot has existed since the 1980s and I never really found it important enough to ever bother. Perhaps boredom played a role here but looking back I’m glad I gave it a shot. Fi...
SSO part 3 Wireless network Access Control and VLANs
Introduction We previously set up a single sign on system with the windows active directory, unifi switches, unifi access points, authentik as the OIDC provider and freeradius. I was able to get w...
Automating our backups
Introduction If we had a top #10 in system administration, backups would have to be one of the least sexy topics. That being said you’ll count your blessings once disaster hits and you are able to...
Comptia Network+ (N10-008) course notes
Introduction And another one in the box. Learned a lot of new concepts and it was also a great way to refresh my networking knowledge. This course is given by Keith Barker on CBT nuggets. The purp...
Productivity on gnu/linux
Introduction I’ve spent long hours studying and refreshing my knowledge of linux in the past months so I feel I need to lighten up the atmosphere a bit and turn down the technical complexity. This...
Comptia Linux+ (XK0-005) course notes
Introduction This course is given by John McGovern on CBT nuggets. The purpose of this document is to summarize some of the key learnings I got from it. Linux, Partitions, Disk Overview of the b...
April's fool
Introduction Thought I would write a diary entry with my two blunders of the week. The first one is related to a ceph cluster manipulation that killed a live production server on a busy thursday m...