Setting up Collabora

I came across a guide to set up Collabora Online Development Edition (CODE) as a docker container, in order to enable creation and editing of office documents inside Nextcloud. Just like Google Docs, but in the own cloud.

The guide however focuses on a setup with apache as reverse proxy …

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Using RPi 3 with volkszaehler

Now that it is possible to boot from network on RPi, I wanted to have my volkszaehler Pi use this feature. However, this is only possible with RPi 3, not with 2. I therefore replaced the RPi 2 with a newer 3.

Nice thing is that RPi 3 has a …

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Network boot for RPi

Date Sun 07 August 2016 By JHF Category Linux. Tags RPi

I've read that the Raspberry-Pi-Foundation has released a new firmware for the RPi 3 not only allowing boot from USB drives but also through network (TFTP boot).

The tutorial explains the necessary steps. Interesting thing is that an initial single boot with special config is needed to toggle a switch …

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Display issues with GTK applications

After one the last package updates my GTK-based applications (especially firefox) started exhibiting display issues. Like checkboxes being present (mouse cursor is changing its shape when hovering over them) but not visible.

It turned out this was and issue with an update of the GTK package.

The fix itself is …

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Disk spinning up again and again

On my NAS I'm trying to reduce power consumption by spinning down disks when they're not used. However I noticed that after a while the disks kept on spinning up and thus kept running 24/7.

Manually shutting down the disks didn't help either, disks were up soon after.

I …

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Configuring nginx using debops ansible scripts

I started using ansible some months ago to configure my servers. As a beginner I wrote simply structured recipes, using templates with only few variables.

Recently I've been made aware of DebOps, a collection of ansible scripts for configuring nearly everything on a server.

With the move to letsencrypt certificates …

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Rkhunter cronjob errors

Saw this in my weekly rkhunter's run :

/etc/cron.weekly/rkhunter:
/usr/bin/rkhunter: 7439: [: Binary: unexpected operator
/usr/bin/rkhunter: 7439: [: Binary: unexpected operator

Was not the first time, but now I had time to investigate...

So it seems that the problem comes from using non-english locales with Ubuntu's …

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Generating certificates with let's encrypt

I've started using the new CA named let's encryptduring their closed beta back in november.

At that time, I've been using their own (python-based) client to generate test certificates on my laptop (I've never planned to run the client on my servers as I don't really like having such …

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Running tor on a raspberry pi

Came accross this article explaining how to setup and run a Tor relay node on a raspberry pi.

Actually, the node is up in running in few minutes and runs with less then 5% CPU and approx 10% memory.

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Syncthing and Android's SD card

Already some time ago a friend of mine told me about syncthing. I've been using foldersync for longer time and was quite satisfied with it. I've been using it to sync the photos from my smartphone to my NAS. This works fine in the background as soon as the smartphone …

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