Why we need to update an Image? ** Updated post ** How to update a Docker image with the new changes that we made in the container? Yeah, we all know that, the Docker image is the core part of…
Author: Arunlal Ashok
SRE at Endurance International Group. Linux lover. Like to play on Linux console. I started this blog to share and discuss Linux thoughts.
Always happy for an open discussion! Write to arun (@) crybit (dot) com.
Always happy for an open discussion! Write to arun (@) crybit (dot) com.
How to convert or concatenate integer with string variable in Python?
Convert int to str. Simple way to concatenate integer and string variables – Python. In some cases, you have to concatenate integer variables to string variables in your Python script. You can not do this by simply using the (+) sign. In…
What is a Linux container?
An intro to Linux containerisation. Basic: Containerisation helps to isolate processes. You can run your App/Services as an isolated process, running from a distinct image that provides all files necessary to support the processes. Basically Linux containers are OS level virtualisation…
Setup/configure a three node Elasticsearch cluster on CentOS 7
Elasticsearch is a widely using Search Engine and it’s other use cases are log analytics, full-text search, security intelligence, business analytics etc. It’s open source, you can set it up as a cluster on your own servers. In this article,…
Install PuppetDB on CentOS 7
What PuppetDB can do in your architecture is unbelievable… Yeah!! I started learning the Puppet since few months ago and it’s quiet interesting. And the interesting part is the PuppetDB. It’s a puppet module to store agent nodes details. That…
How to check the execution time of your bash script?
Do you have a long running bash script on your server’s cron list? And you really wanna get notified about the total execution time for your cron? Yeah, here we go! We can not find out the total execution time from…
How to kill or terminate unwanted tty/pts sessions in Linux?
Have you ever faced this situation, a lot of terminal connections to your server? Before starting, we have a brief discussion on TTY. The word tty stands for teletype terminals. Some years ago, user terminals were connected to computers’ electromechanical…