Upload initial revision of Presentation to Git.

Makefile

@@ -0,0 +1,2 @@
+all:
+	asciidoc --backend slidy  presentation_txlf.asc

presentation_txlf.asc

@@ -0,0 +1,80 @@
+Implementing High Available Applications on Red Hat Enterprise Linux 7.
+======================================================================
+:author:    Julio Villarreal <juvillar@redhat.com>
+:Author Initials:   JV
+:icons:
+:website:   http://www.juliovillarreal.com
+:toc:
+:navigation:
+:backend:   slidy
+:max-width: 45em
+
+Implementing High Available Applications on RHEL 7.
+----------------------------------------------------
+=== Julio Villarreal Pelegrino, RHCA
+
+==== Senior Cloud Architect
+
+===== Cloud Practice - Red Hat, Inc.
+===== @juliovp01
+
+Agenda
+-------
+
+* 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.
+
+
+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 of failures.
+
+* Reliable crossover.
+
+* Detection of failures as they occur.
+
+=== How High Availability is implemented on RHEL 7? 
+
+*CLUSTERING!*
+
+What is Clustering? 
+-------------------
+----
+A cluster is a set of computers working together on a single task. Which task is performed, and how that task is performed, differs from cluster to cluster.
+----
+=== There are four (4) different kinds of clusters:
+High-availability clusters:: Known as an HA cluster or failover cluster, their function is to keep running services as available as they can be. You could find them in two main configurations: 
+* Active-Active (where a service runs on multiple nodes).
+* Active-Passive (where a service only runs on one node at a time).
+
+Load-balancing clusters:: All nodes run the same software and perform the same task at the same time and the requests from the clients are distributed between all the nodes.
+
+Compute clusters:: Also know as high-performance computing (HPC) cluster. In these clusters tasks are divided into smaller chunks, which then get computed on different nodes.
+
+Storage clusters:: All nodes provide a single cluster file system that will be used by clients to read and write data simultaneously.
+
+Benefits of Highly Available applications.
+------------------------------------------
+
+=== In two words: "Application resiliency".
+
+- Apply patches. 
+- Planned outages. 
+- Unplanned outages due to failures (server, software, network, storage).
+
+
+
+
+
+