How does FaceTime Work?

By Mathew Duggan in DevOps on

As an ex-pat living in Denmark, I use FaceTime audio a lot. Not only is it simple to use and reliable, but the sound quality is incredible. For those of you old enough to remember landlines, it reminds me of those but if you had a good headset. When we…

TIL Command to get memory usage by process in Linux

By Mathew Duggan in TIL on

If like me you are constantly trying to figure out using a combination of ps and free to see what is eating all your memory, check this out: ps -eo size,pid,user,command --sort -size | \ awk '{ hr=$1/1024 ; printf("%13.2f Mb ",hr) } { for ( x=4 ; x<…

TIL docker-compose lies to you....

By Mathew Duggan in TIL on

You, like me, might assume that when you write a docker-compose healthcheck, it does something useful with that information. So for instance you might add something like this to your docker-compose file: healthcheck: test: ["CMD", "curl", "-f", "-L", "http://localhost/website.aspx"] interval: 5s timeout: 10s retries: 2 start_period:…

This Bloomberg Story Makes No Sense

By Mathew Duggan in Programming on

Someone Is Making Something Up One of the biggest stories right now in the tech world is the bombshell dropped by Bloomberg that the biggest names in tech have been hacked. Not through a software exploit or through some gap in a firewall, but by the Chinese government infiltrating their…

MegaCLI Cheat Sheet

By Mathew Duggan in Programming on

Everyone who has worked with specific vendors servers for awhile has likely encountered megacli. This is the comman line tool to manage your RAID controller and disks. Since often I'll only end up doing this every six months or so, I usually forget the syntax and decided to write it…