Mkr Fox 1200 Beginner Tutorial

Download the latest version of the Arduino IDE as the version in the Ubuntu/Mint/Debian repositories is a little old: https://www.arduino.cc/en/Main/Software At the time of writing I am using version 1.8.5 Configure Arduino IDE First we need to... » More

Zookeeper install on CentOS 7

Good concise article here on devopscube for installing zookeeper cluster. I've added some of my own bits: Firewall Disable firewalld or allow ports 2181 3888 2888 Install Java User Create a zookeeper user Install Zookeeper Download ZooKeeper... » More

Yakuake not restoring window height & width

git branch I found that Yakuake was re-opening with an 80% width and about 30% height but I prefer 100% wide and 80% high. So it looks like my settings were saving into the file: But this was possibly not the file that was being read when Yakuake started. I... » More

Tab Separated File Returns Wrong Number of Fields

Shell So we had a CSV/TSV file with tabs separating each field but one of the fields was a description field that contained spaces. When parsing this TSV file some programs interpreted the spaces as field delimiters (TSV might be a bad idea!). Input file... » More

Install Python Linters in Atom

I installed the relevant Python packages first e.g. Then on the Atom menu use: Edit > Preferences then search for atom packages such as flake8, pep8, pep257 and pylint: Then click the install button. After restarting style advice is shown... » More

Manic Miner on Linux

I was reminded about how much time I had spent as a kid playing Manic Miner on an Amstrad 464 and decided to give it a try on my current desktop (Linux Mint) so for future reference... I grabbed the code created by here: Installed a few... » More

MySQL Percona Slave Replication Change Channel Name

I had inadvertently set up slave replication using the wrong channel name - which is a minor issue except that it caused some issues with an already configured Nagios check. To 'change' the channel name I stopped the slave process, removed all the slave... » More

Mount Files Virtually via Dell iDRAC

Use fallocate to create a new 300 MB file : Create an ext4 file system within the image file: Create a mount point: mount it: Then on the Dell iDRAC use the 'Virtual Media' menu to 'Map Removable Disk...'  : Then on the host... » More

Docker jasonrivers/nagios Permissions Problem

I was running this docker image proxied via traefik but I was receiving an error message in the Nagios web interface: docker nagios Error: Could not read object configuration data And in the logs from the container: To solve the issue I connected to... » More