Author Archive: Saheetha Shameer

I'm working as a Senior System Administrator. I'm quick learner and have a slight inclination towards following the current and emerging trends in the industry.

My hobbies include hearing music, playing strategy computer games, reading and gardening. I also have a high passion for experimenting with various culinary delights :)

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6 Best Password Manager Tools for Linux

Today majority of Internet users are exposed to cyber attacks, not because they aren't using any best security measures, but because they are using weak passwords to secure their accounts. Passwords are your last resort of defense against online threats. Even though, we can hardly control data breaches, it is still important to maintain strong […]

September 6, 2016 | By
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How to Install Rocket Chat on Ubuntu 16.04 with Docker

Rocket.Chat is a Web Chat Server, developed in JavaScript. It is an open source messaging APP built with Meteor fullstack framework. It is a great solution for communities and companies who need to host their own private chat service or for developers who're planning to build and evolve their own chat platforms. There are several features […]

August 29, 2016 | By in OPEN SOURCE TOOLS
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Install WordPress on Docker LEMP Stack with Letsencrypt SSL

WordPress is an opensource software, which you can use to create your beautiful website, blog, or app. Hundreds of community volunteers has built this core software. And there are thousands of plugins and themes available for this to transform your website into the one in your imagination. In this article, I'm explaining on how to […]

August 17, 2016 | By in DEVOPS
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Securely Download Files using Https from Nginx Docker Containers

As  system administrators, we have situations where we need to download large files such as backup files, database backups, emails, log files etc securely between our servers. Usually we use SFTP, SSH or SCP for this purposes. But these processes slow down comparatively, when it comes to a remote backup download. In this article, I'm explaining a […]

August 10, 2016 | By in SECURITY
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How to Monitor Docker Containers using Grafana on Ubuntu

Grafana is an open source feature rich metrics dashboard. It is very useful for visualizing large-scale measurement data. It provides a powerful and elegant way to create, share, and explore data and dashboards from your disparate metric databases. It supports a wide variety of graphing options for ultimate flexibility. Furthermore, it supports many different storage backends for your […]

August 3, 2016 | By in MONITORING
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How to Install Visual Studio Code 1.3 on Ubuntu 16.04

Visual Studio Code is a lightweight, free and open source software. It provides developers with new choice of tooling, one which combines with simplicity and the streamline experiences with the code editor with more features. It is a powerful source code editor which runs on your desktop environment, available for OS like for Windows, OS X and Linux. […]

August 1, 2016 | By
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Install and Configure Git on Ubuntu 16.04

Git is an open source, distributed, version control system designed to handle every type of projects from small to big with speed and efficiency. It is easy to learn and has a low memory consumption with lightning speed performance. It surpasses several other SCM tools like Subversion, CVS, Perforce and ClearCase with features like cheap local […]

July 18, 2016 | By
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How to Install Go on Ubuntu Linux and CentOS

GO is a general purpose system programming language which means that you can build wide variety of application using it. It is purely an open source language developed by Google. It has cross platform, which supports all major operating systems. Go source code is compared to a binary executable or library, this results in a very […]

July 6, 2016 | By
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How to Add Host and Manage Services in Icinga2

In my previous article, I've explained how to install and configure an Icinga2 with Icinga Web2 interface. Now it's time to introduce some hosts to our monitoring system.  Unlike Nagios, we can add the hosts automatically to the Icinga2 systems. The configuration is quite simple and easy compared to other monitoring systems. As stated before,  the […]

July 1, 2016 | By in MONITORING
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How to Install Icinga2 on Ubuntu 16.04

ICINGA2 is an open source monitoring system which checks the availability of your network resources, services, notifies users of outages and generates performance data for reporting. It is an advanced form of Nagios and it has a better web interface compared to it. It is developed with a much user-friendly web interface with more options and it is more […]

June 29, 2016 | By in MONITORING
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How to Install FFMPEG on CentOS 7

FFMPEG is a major multimedia framework, able to decode, encode, transcode, mux, demux, stream, filter and play various audio and video files in different formats.  FFMPEG is a very fast video and audio converter that can also grab from a live audio/video source. It can also convert between arbitrary sample rates and re-size video on […]

June 28, 2016 | By
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How to Setup Postfix Mail Server on Ubuntu 16.04 (Dovecot - MySQL)

Generally, all mailservers consist of three main components: MTA, MDA and MUA.  Each components plays a specific role in the process of moving and managing email messages and is important for ensuring proper email delivery.  Hence, setting up a Mail server is a difficult process involving the proper configuration of these components. The best way is to […]

June 22, 2016 | By
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How to Run Single-Node Cassandra Cluster in Ubuntu 16.04

Apache Cassandra is a open source distributed, high performance, extremely scalable and fault tolerant post-relational database solution. It can serve as both real-time data store for online/transactional applications, and as read-intensive database for business intelligence systems. Relational DB Vs Cassandra Relational database systems handles moderate incoming data velocity and fetches data from one or few locations. […]

June 15, 2016 | By
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How to Run Puppet on Container Infrastructure using Docker

Docker is an Opensource Container based technology. It is giving us a workflow around containers which is much easy to use. Docker separates application from underlying operating system using container technology, similar to how Virtual Machines separate the operating system from underlying hardware. Docker Container Vs Virtual Machines The Virtual Machines includes applications, necessary binaries […]

June 13, 2016 | By
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