Sometimes we wonder, why we pay this much amount to the Cloud provider/s. While building the infrastructure, TCO is one of the critical factor. TCO means, Total Cost of Ownership. We need to do a lot of things to maintain…
Author: Arunlal Ashok
DevOps Engineer. Linux lover. Traveller.
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 add files/folders to an existing TAR archive?
Is it possible to append on existing TAR archive? Yes we can add additional files/folders to an already existing TAR archive. The ‘TAR’ saves many files together into a single tape or disk archive, and can restore individual files from the…
PromQL Wildcard Examples
Why this post? If you have Prometheus cluster as your central metrics platform for your servers and the applications, you might came across situations like, have to write custom queries for fetching the data from Prometheus or for creating custom…
How to save/backup existing iptables rules to a file – Iptables commands
Introduction Iptables or iptables rules plays an important role in server administration part. You can secure your servers by using iptables rules. Normally, if you’re maintaining the IPTables configuration file (/etc/sysconfig/iptables) you do not need to worry about this. You…
Apache Kafka Components and CLI Cheat Sheet
In event streaming technique, Kafka plays an important role. We are living in a very fast growing technological era and the analysis of our data is very important to give better user experience and build a more customer friendly business.…
Exclude a directory or multiple directories while using find command
As a Linux server administrator or DevOps engineer we need to use find command quite frequently to find a lot of stuff from the server. We can use the find command to find files and directories based on different things;…
Fetch Kubernetes node details for quick analysis of your worker nodes
What we are discussing on this blog? Hey, this is not a big thing, however, sometimes it will help a lot on troubleshooting or understand the worker configurations without logging into the AWS console. You can use the kubectl CLI…