Labeling Partitions with LABEL and PARTLABEL

So working on a system that had incorrect partitioning configured.¬† In /etc/fstab the partitions were configured with: PARTLABEL=data1 /data1 ext4 defaults 0 0 PARTLABEL=data2 /data2 ext4 defaults 0 0 but the partitions did not have PARTLABELS set.... » More

Cloudera Hue User Password Reset

I needed to access the Hue file browser service¬† and for my version of cloudera this was: cd /opt/cloudera/parcels/CDH-5.7.6-1.cdh5.7.6.p0.6/lib/hue Run the createuser command: ./build/env/bin/hue createsuperuser Username (leave blank to use... » More

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 yum install java-1.8.0-openjdk User Create a zookeeper user groupadd... » 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: ~/.config/yakuakerc But this was possibly not the file that was being read when... » 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. sudo apt-get install flake8 python3-flake8 python3-pep8 python-pep8-naming python3-setuptools pylint3 Then on the Atom menu use: Edit > Preferences then search for atom packages such as flake8,... » 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: git clone... » 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