Author: Vratislav Hutsky

Migration from OpenLDAP 2.3 to 2.4

Note: I wrote this post during Christmas break 2017, but it took me some time before I managed to give it a better form, verify the steps again and publish it. Hence some Xmas references in a text published during

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Debian buster and wake on lan

For quite some time, I used to have a low-end motherboard that didn’t support Wake on LAN. So when I left for work or holiday, I would usually leave my home PC on, because sometimes I just needed to access

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Weekend hobby – PC cleaning

This is a PC that belongs to my brother in law. He hasn’t been using it for over a year, ever since he switched to Mac, so he’d like to get rid of it. It has i5 (Sandy bridge) inside

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KVM: Cannot find any matching source devices for logical volume group vg2

I installed Centos 7 on a brand new machine about a half a year ago, and set up KVM with two data pools – one just a regular directory for old raw images, the second being an LVM volume group.

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IPv6 with gateway in a different subnet

I’ve run across this peculiar problem. I was trying to set up IPv6 on a Centos 6 machine. I thought that it would be a simple task – a couple of minutes at most – as I had done that

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Raspberry Pi – analog output noise

I got Raspberry Pi 2 as a present from my brother. It’s a nice toy, I was trying out OpenELEC, it makes for a really nice home theater in combination with a NAS on local network. The only drawback was

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Scroll emulation with Trackman Marble in Debian 9

Spending a lot of time with mouse and keyboard, I decided I would give it a try with trackball. A friend lent me Logitech Trackman Marble for a week to see if I can get used to it. The one

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header_checks and Spamassassin headers in Postfix 2.6

I’ve had this mail server of mine for some time. I was an early adopter of Gmail back then, but as years went on and it became obvious that messages were data-mined by Gmail, I eventually started running my own

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Apache and umask 002

I ran into a problem with Apache on Centos 6. For some time, I was the only person who had access to this particular machine so permissions were not a problem. However, now that somebody else is taking care of the website

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“Lazy” Synolocker

A funny thing happened to me the other day. Someone brought me a 4-bay Synology NAS which had been hit by ransomware called Synolocker. The usual scenario – the NAS was exposed to the internet, maybe not updated as regularly

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