Julio's Blog

High Availability and Pacemaker 101!

In this blog post, we will talk a little bit about High Availability and a little bit more about Pacemaker. Here are some of the topics of this post: Introduction to High Availability (HA) and Clustering. Benefits of Highly Available applications. How HA is implemented on Red Hat Enterprise Linux (RHEL) 7. HA requirements on RHEL 7. Demo: Building a 3 node Apache cluster. Introduction to High Availability (HA) and Clustering. What is High Availability (HA)? In IT, High Availability refers to a system or component that is continuously operational for a desirably long length of time. 3 cores principles to HA Elimination of single point... read more »

Installation and basic configuration of MariaDB on CentOS/RHEL 7.

In this post, I will show you how to install MariaDB on a CentOS/RHEL 7 machine. This task is really easy to complete and could be done in couple minutes. Installing the Software [[email protected] ~]# yum install mariadb-server Enabling and starting the service To enable the service and making it persistent across reboots: [[email protected] ~]# systemctl enable mariadb.service To start the service: [[email protected] ~]# systemctl start mariadb.service Basic MariaDB configuration Now we are going to do some basic configuration. To do this we will execute the mysql_secure_installation script. To do this run: [[email protected] ~]# mysql_secure_installation Here are some steps... read more »