What is Semaphore? Well, we need a discussion on Semaphore concept under Linux as it plays major role in a Multi Processing System. Some time we need to review the current Semaphore status on the server and need to kill unwanted/unused…
Author: Arunlal Ashok
DevOps Engineer II at Zeta Suite. Linux lover. Traveller. Father of two princesses.
Always happy for an open discussion! Write to arun ((@)) crybit ((dot)) com.
LinkedIn: https://www.linkedin.com/in/arunlal-a-18037773/
Always happy for an open discussion! Write to arun ((@)) crybit ((dot)) com.
LinkedIn: https://www.linkedin.com/in/arunlal-a-18037773/
MySQL tweaking – best practices and tips for SysAdmin
Why MySQL tweaking? We all need fast, reliable and secure environment for our online space. Almost all websites has its own databases to store its data. MySQL is one of the most widely using relational database service to manage user…
Setup/configure a three node Elasticsearch cluster on CentOS 7
Updated post: This article was published on December 2019. This is the normal way of installing Elasticsearch on Linux machines. You can follow this blog for setting up a three node Elasticsearch cluster on CentOS 8 as well. Instead of…
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…
[Solved] Bad Request This web server is running in SSL mode – Webmin – Ubuntu 12.04
Few months ago (Too long, these things happened during my initial days of work), I had faced this error while connecting to Webmin just after completing the installation. I had searched a lot and finally found one solution for this.…
How to rename an already existing screen session?
We already discussed different topics on “screen” command in our previous discussions. You can refer to our previous topics for more details on that. 1) Screen command usage 2) How to access attached screen after connection dropped? The screen command…
[Solved] Terminal not opening – Ubuntu
I was facing this problem on my PC yesterday (This is an updated post, this yesterday is long back!!). I had to use Xterm instead of Gnome Terminal. I searched a lot on Internet and finally got a solution. Error…