The purpose of this blog is not to go deep into coreDNS rather explain how DNS works in kubernetes, what coreDNS contains and how the corefile uses plugins. So let’s get started.
A Closer Look at coreDNS
Category: DevOps
Make Your Own Rules, ElastAlert Style
Right off the bat, I want to say that, this blog does not cover installing and configuring ElastAlert in the usual sense, i.e. working with pre-existing rules. It helps, I hope, in understanding the requirements for adding one’s own rule. Continue reading “Make Your Own Rules, ElastAlert Style”
SonarQube Custom Quality Profiles
Source code quality analysis is a basic piece of the Continuous Integration process. Along with automated tests, it is the key component to deliver reliable software without numerous bugs, security vulnerabilities, or performance spills.
There are many open source as well as commercial tools available in the market for static code analysis such as LGTM, PMD,Graudit, reshift, Codacy, and many more. One of the best static code analyzer you can find on the market is SonarQube.
IP Whitelisting Using Istio Policy On Kubernetes Microservices
Recently, we explored Preserving the Source IP address on AWS Classic Loadbalancer and Istio’s envoy using the proxy protocol in our first Part. Continuing to the second part of this series, we will look at How can we apply IP whitelisting on the Kubernetes microservices!
Problem Statement:
There are some microservices behind an internet-facing loadbalancer that we want to have limited access to, based on source IP address. This will prevent our microservices from unauthorized access.
Continue reading “IP Whitelisting Using Istio Policy On Kubernetes Microservices”
Terraforming The Better Way: Part-I
We often face complications after a certain point when we can not change the foundation layer of our code because we haven’t thought it through and didn’t plan or strategize the way of writing code in the beginning, there are certain points which should be taken under consideration similarly there are some common mistakes which we should avoid.