MongoDB Replica Set with Master-Slave Replication and Automated Failover

A replica set is a group of MongoDB database nodes used for defining database clusters with master-slave replication and automated failover. A replica set contains a single primary node, multiple secondary nodes, and an arbiter node. The primary node receives all write operations while other nodes apply operations from the primary so that all nodes have the same data set.

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Install RocketChat on an Ubuntu 14.04 VPS

install-rocketchat-on-an-ubuntu-14-04-vpsIn this blog post we will show you how to install RocketChat on an Ubuntu 14.04 VPS. RocketChat is a web chat server which runs on Node.js and MongoDB. RocketChat allows you to chat with your colleagues and friends face-to-face over audio and video, upload files, record and transmit voice messages and many more. This guide should work on other Linux VPS systems as well but was tested and written for Ubuntu 14.04 VPS.

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Install Quokka on Centos

install-quokka-on-a-centos-vpsIn this blog post we will show you how to install Quokka on a Centos VPS with Nginx and uWSGI. Quokka is open source flexible content management system based on the Flask web framework . You can use Quokka to build a web portal, publish a blog or use it as a document management system . With the existing Quokka modules you can create an e-commerce application or fundraising website. This guide should work on other Linux VPS systems as well but was tested and written for a Centos 7 VPS.

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