Ever since Mac deploys the night shift feature, I could not stop using it. For someone who needs to look at monitors for long hours, I absolutely love it. I can also do it with Linux.
Category: others
Create CSR with SANs on php
Ever tried generating CSR with SANs? It is tedious work. It involves populating an openssl config file with the additional domain names. Put it on a webapp, it does not eliminate the work, but only require minimal coding once.
AWS Application Load Balancer Request Tracing
ALB is a layer7 load balancer on AWS. It offers more features than ELB. You can find out more about it on https://aws.amazon.com/elasticloadbalancing/applicationloadbalancer/ Recently, I was asked to look into a random 504 issue with ELB. Because there is not a lot to configure on ELB and it’s pretty much a black box, I wasn’t…
GNU moreutils
Moreutils comes with additional Unix utilities. Sysadmin loves tools. Let’s see what tools are available.
Scheduled snapshot on AWS using Lambda
Check out my recent wiki page on how to schedule snapshot backups on AWS using Lambda. https://www.headdesk.me/Lambda Lambda is much more powerful then this. Using it together with S3 / SNS / SQS / etc allow deployment of business applications / workflows truly on cloud.
Copy directory in linux
Back to 101, copy a directory. This sounds trivial but there are subtle differences that can make a huge difference. I used to run this as it makes sense to me syntactically rsync -av source/* dest/ It works well BUT all the hidden directories right below source/ will not be copied. If I do any…
Divide and conquer
There are times when I need to analyse Apache’s logs. Some of them can be quite large. Here, I’ll compare several methods and see if there is a faster way of doing so.
Enable GPU acceleration on Chrome/Ubuntu
Ever feel your browser always perform slower on Linux or taking more cpu then other OS platforms? Well I did and as it turns out, I can manually enable GPU acceleration. Check out the instructions in this link. Do you have it enabled? Quickly check by opening chrome://gpu To enable it, see instructions on http://www.webupd8.org/2014/01/enable-hardware-acceleration-in-chrome.html…
Resize root disk on Azure VM
Azure hard-codes disk size and it cannot be changed during deployment. Resizing root disk on Azure is often a required task. Here is how a root disk can be resized. I learned this the hard way.
Freshness of coffee beans – huge difference?
Ever since I got my Breville 870XL, I’ve read numerous comments about how important it is to get fresh beans. Out of laziness, I usually go to the supermarket to get my coffee. There is a self-service counter in the store where I can pour the amount of beans I desire. The beans were prepared by…