Category Archives: Linux

My talk about DevOps at Coffee and Code, Goa

By | 15th December 2018

On 13 October 2018 I had given a talk about Devops – The art of managing infrastructure at scale at a Cofee and Code event held at 91Springboard, Goa. In the talk I spoke about managing infrastructure from different perspectives – developer, Linux sysadmin, network admin and leveraging open source tools to do so. I… Read More »

Updates to blog – BGP, IPv6, TLS 1.3 and more

By | 8th December 2018

Just wanted to share a few updates about blog and life. TLS 1.3 with 0-RTT TLS 1.3 is a new standard of encryption on the web and I have implemented it! This should result in faster load times and improved security for the users. ECDSA certs are enabled too, along with RSA for better performance.… Read More »

Ultimate OpenVPN setup – inter-connecting, connecting to multiple sites at once

By | 21st May 2018

I had multiple networks scattered around different places and needed a way to link all of them together. They were as follows: Work related VPNs. There were multiple VPNs to access different parts of the internal networks. Handling multiple VPN files was very cumbersome. For convinience let’s assume we have a single network here –… Read More »

Free wildcard certs with Let’s Encrypt & DNS auth ft. Route 53

By | 17th May 2018

Everyone’s favorite SSL certificate authority Let’s Encrypt recently announced support for wildcard SSL certificates on their forum here using the ACMEv2 API. Wildcard SSL certificates still cost as much as $150-300/yr on the market. Getting them for free is a huge bonus. Install Certbot Grab the Certbot tool for issuing Let’s Encrypt signed SSL certificates.… Read More »

How to fake pings and traceroutes

By | 21st April 2017

I recently read Srijit Banerjee’s excellent article, which brought to light ugly things done by service providers to fool their customers who have grown accustomed to the ping google.com command to judge the quality of the internet. While he has strayed away from how this is done, I feel that educating people on how this… Read More »

How to fix “Not logged into Rocket League servers” error on Linux

By | 28th January 2017

Encounter the “Not logged into Rocket League servers” error while trying to get online on the Rocket League game on Linux? Here’s a fix. Rocket League needs SSL to communicate with their servers. So the first steps would be to: Make sure the system time and date is correct. I use UTC hardware clock. Make… Read More »

How to use AMDGPU driver for Southern Islands and Sea Islands card on Ubuntu Linux

By | 19th December 2016

These instructions apply only for GCN 1.0/Southern Island cards and GCN 1.1/Sea Islands cards. You can check if your card falls in this categories here. The AMDGPU driver is a newer driver for GNU/Linux and promises better performance and Vulkan support. You will need to do two steps to make it work. Userspace drivers –… Read More »