Hello, My name is Amit - I am interested in programming, software tools, systems and infrastructure. A lot of what I explore in software makes it to my blog posts, articles, books, talks and GitHub repositories. If you would like to get an email everytime I write something new, please subscribe to my newsletter. You can contact me via email, on Twitter and on LinkedIn.
My post recent posts are below. So far, I have written about C, Fedora, Golang, Infrastructure, Python and various others.
I wanted to setup Nginx logging so that it would perform GeoIP lookup on the IPv4 address in the X-Forwarded-For header.
Here's how I went about doing it on CentOS 7.
This nginx module integrates Maxmind GeoIP2 database with the RPMs being available by getpagespeed.com.
Once I had installed …
In this post, we will see how we can use Golang to generate Terraform configuration from a TOML specification. That is, given a TOML file, like:
subnet_name = "SubnetA"
rules = [
{rule_no=101, egress = false, protocol = "tcp", rule_action = "allow", cidr_block = "127.0.0.1/32", from_port = 22, to_port = 30},
]
We will generate …
docker logs by default shows the container's
stdout and stderr logs. However, what I discovered was that the stderr logs from the container
are output to the host system's stderr as well. I was expecting everything from the container
to be on the host's stdout.
Let's see a demo. Consider …
I love working in software. Mostly things work as expected, but at times no. I changed A, how can Z be affected - after all they are all miles apart. Right? Wrong. Z can be affected. Today's story is the latest - totally unexpected, but not surprising.
We run ASP.NET …
Recently, I wrote two articles about using traefik as a reverse proxy. The first article discussed deploying a ASP.NET framework application and the second discussed deploying ASP.NET core applications.
In both cases, I demonstrated the following:
One of the …
Windows docker images can be bulky and on a server that you are deploying your application as docker images, the free disk space becomes a metric to watch out for. The following script will setup a Scheduled tasks to be run at a 7.0 PM UTC which will prune …
TLDR; If you are having trouble with docker build and ephermal port ranges, we can use iptables to solve the issue:
$ sudo iptables -t nat -I POSTROUTING -p tcp -m tcp --sport 32768:61000 -j MASQUERADE --to-ports 49152-61000
I have written previously about how things get interesting with ephermal …
When we create an AWS Code Deploy deployment group via Terraform or CloudFormation and integrate with an Auto Scaling Group, it also by default creates an initial lifecycle hook which ensuresthat a new code deployment gets triggered when a scale-out event occurs.
It is all very "magical" and it is …
I wanted to create a new SSL certificate for IIS hosted ASP.NET framework application. The key data that may make this post relevant to you are:
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