the ramblings of a sysadmin / cyber security professional
This is a continuation of my Pi world record attempt series. Before I quit y-cruncher and start a backup, I need to know when the y-cruncher checkpoint file is modified. To accomplish this task, I use a program called incron1. incron is able to detect file/directory changes and run commands as a result. In my case, I have a bash script that is executed when the y-cruncher Checkpoint File is…
This is a continuation of my Pi world record attempt series. This blog post will talk about how I handle backups during the world record attempt. Due to the vast amount of computation storage required, implementing RAID or other types of redundant storage were not feasible. To mitigate the risk of drive failure, I decided to purchase a tape library and drive. Tape is typically more stable than…
This is a continuation of my Pi world record attempt series. Below is the script I use to remove unneeded files from drives when generating a y-cruncher backup. It’s quick and dirty, but does the job. If you neglect to remove unneeded files in between y-cruncher runs, you risk the disk running out of space and your computation failing. Anyways, I run this script right before executing the Veeam…
Before I go into the specifics of my record attempt, it is important for you to have some background information. Over the past few years I have been steadily acquiring server hardware to increase my knowledge of system administration and cyber security. This is not only for personal growth: it has also helped me immensely in my professional career. I have served in various roles including cyber…