Posts Categorized: Uncategorized

iDRAC 9 Set Physical Disk to Non-RAID

In the update from iDRAC 8 to iDRAC 9 it has been infuriating searching the ‘Storage’ menu only to discover that the storage is managed under ‘Configuration > Storage Configuration’  I’m convinced the user experience could be better! At the very least a link through for configuration.

Clearing old Journald Logs

Journald logs can be cleared by timescale or size as follows. Keep only 5 days worth of logs journalctl –vacuum-time=5d Retain only the past 500 MB: journalctl –vacuum-size=500M

Beginning MongoDB

MongoChef

Coming at MongoDB from a RDMS perspective (and specifically MySQL), things feel a little strange. Just sharing a few paragraphs on how I got started. Installation Installing MongoDB was easy following their instructions and using the 10gen repo for CentOS. After installation the mongo client can be used to access the server without any authentication… Read more »

MySQL dummy placeholder RPM package for MariaDB

On CentOS 7 MariaDB has (quite rightfully IMHO) replaced MySQL in the repositories however this has caused me a few problems. Since MySQL was so widely used there are other things that have MySQL as a requirement/dependency. Mainly my problem was some puppet modules that wanted the mysql-server package installed before they would proceed with… Read more »

Minecraft mcrcon and iconv for dodgy characters

I was using the mcrcon utility to retrieve performance statistics from a Minecraft server for use in Nagios: /opt/minecraft/mcrcon -c -H 192.168.1.111 -P 25575 -p “topsecret” list However the output included dodgy unrecognised � characters (see screenshot). To remove these characters from the output I converted with iconv to UTF-8 and was then able to… Read more »

CoolerMaster Hyper 212 Evo

coolermaster-hyper-212-evo

I ordered a CoolerMaster Hyper 212 Evo from Amazon for £26.50 to keep my machine a little cooler than the stock heat sink. The two heat sinks are shown below. The CoolerMaster is much bigger and could be a struggle to get in to most cases but I am very happy with the results. It… Read more »

Testing SMTP AUTH PLAIN Over TLS

TLS SMTP connection

To prepare to test a TLS connection to an SMTP server we first need to Base64 encode the Login credentials:

The result of this is:

I tried using the base64 linux command but did not get the same result or a result that would work:

Create the SMTP session with openssl rather… Read more »

Twiki Installation and Setup Overview

Twiki Installation

I am not necessarily a fan of this software as I find it a bit less than intuitive to use but I set it up on one of our CentOS servers for someone else and thought I would jot a few notes about the process. Install dependencies:

Get the software tarball (version 5.1.4 at… Read more »

Google Takeout

Google Take away

My Google Drive (Google Docs) was a mess with outdated documents and a poor folder structure so I decided to start afresh by deleting everything and building a tidier folder structure. Deleting everything presents a little problem and in steps Google Takeout – part of the Google Data Liberation Front. Google actually make it easy… Read more »