How To Secure Your Redis Installation on Ubuntu 14.04

Introduction Redis is an in-memory, NoSQL, key-value cache and store that can also be persisted to disk. This tutorial shows how to implement basic security for a Redis server. However, keep in mind that Redis was designed for use by trusted clients in a trusted environment, with no robust security features...

Read More

How To Install and Use Redis

About Redis Redis, developed in 2009, is a flexible, open-source, key value data store. Following in the footsteps of other NoSQL databases, such as Cassandra, CouchDB, and MongoDB, Redis allows the user to store vast amounts of data without the limits of a relational database. Additionally, it has also been compared to memcache...

Read More

Installing RabbitMQ on Ubuntu 14.04

By default, RabbitMQ packages are included in Ubuntu and Debian Linux distributions. The problem is, they are horribly outdated. You are far better off downloading the package online and installing it yourse...

Read More

PHP 5.6 on CentOS/RHEL 7.2 and 6.7 via Yum

PHP 5.6.21 has been released on PHP.net on 28th April 2016, and is also available for CentOS/RHEL 6.7 and 7.2 at Webtatic via Yum. Update 2015-08-22 – Webtatic now has released PHP 7 RC1 for CentOS/RHEL 6 and 7 PHP 5.6 adds new features such a...

Read More

How To Configure and Validate DKIM Records on Zimbra

DKIM is one of many tips for increase reputation of email server besides SPF records who has been explained on previous article. On this section, i will do generate DKIM on Zimbra and configure DKIM records on public DNS using...

Read More

How to Install MongoDB on CentOS 7

MongoDB is a NoSQL database intended for storing large amounts of data in document-oriented storage with dynamic schemas. NoSQL refers to a database with a data model other than the tabular format used in relational databases such as MySQL, PostgreSQL, and Microsoft SQL. MongoDB features include: full index support, replication,...

Read More

Best command line tools for linux performance monitoring

Sometimes a system can be slow and many reasons can be the root cause. To identify the process that is consuming memory, disk I/O or processor capacity you need to use tools to see what is happening in an operation system. There...

Read More

Disabling the GUI login mode of Redhat or CentOS servers

For disabling the GUI login mode, do the following steps Open the terminal and do the following commands as root user or sudo user. Edit /etc/inittab, ente...

Read More

How To Install the Munin Monitoring Tool on Ubuntu 14.04

Introduction Munin is a system, network, and infrastructure monitoring application that provides information in graphs through a web browser. It is designed around a client-server architecture and can be configured to monitor the machine it's installed on (the Munin master) and any number of client machines, which in...

Read More

How To Map User Location with GeoIP and ELK (Elasticsearch, Logstash, and Kibana)

Introduction IP Geolocation, the process used to determine the physical location of an IP address, can be leveraged for a variety of purposes, such as content personalization and traffic analysis. Traffic analysis by geolocation...

Read More

How To Use Kibana Dashboards and Visualizations

Introduction Kibana 4 is an analytics and visualization platform that builds on Elasticsearch to give you a better understanding of your data. In this tutorial, we will get you started with Kibana, by showing you how to use...

Read More

Adding Logstash Filters To Improve Centralized Logging

Introduction Logstash is a powerful tool for centralizing and analyzing logs, which can help to provide and overview of your environment, and to identify issues with your servers. One way to increase the effectiveness of...

Read More

How To Gather Infrastructure Metrics with Topbeat and ELK on Ubuntu 14.04

Introduction Topbeat, which is one of the several "Beats" data shippers that helps send various types of server data to an Elasticsearch instance, allows you to gather information about the CPU, memory, and process activity...

Read More

How To Install Elasticsearch, Logstash, and Kibana (ELK Stack) on Ubuntu 14.04

Introduction In this tutorial, we will go over the installation of the Elasticsearch ELK Stack on Ubuntu 14.04—that is, Elasticsearch 2.2.x, Logstash 2.2.x, and Kibana 4.4.x. We will also show you how to configure it to...

Read More

How To Install and Configure Elasticsearch on Ubuntu 14.04

Introduction Elasticsearch is a platform for distributed search and analysis of data in real time. Its popularity is due to its ease of use, powerful features, and scalability....

Read More

Installing a Comodo SSL Certificate on Zimbra Collaboration

Installing a Comodo SSL Certificate Use the article as a guide to installing a Comodo issued SSL certificate with the zmcertmgr tool or the Admin Console. Using the CLI 1. Get the bundle from Comodo in crt format, or sometimes like a zip file. Is always good call or write Comodo and obtain the proper Bundle, but you can...

Read More