Create and deploy a scalable WordPress instance consisting of a MySQL database server, a GlusterFS distributed filesystem, Nginx web servers and an Nginx load balancer. By using user-data and droplet meta-data we will automate the deployment of our site.
While handling increased system load is a common concern, decreasing downtime and eliminating single points of failure are just as important. High availability is a quality of infrastructure design at scale that addresses these latter considerations. In this guide, we will discuss what exactly high availability means and how it can improve your infrastructure’s reliability.
Use SSL termination to reduce your SSL certificate and software management overhead on load-balanced servers. This tutorial uses an Nginx load-balancer and LAMP backends.
Heartbeat is an open source program that provides cluster infrastructure capabilities—cluster membership and messaging—to client servers, which is a critical component in a high availability (HA) server infrastructure. Heartbeat is typically used in conjunction with a cluster resource manager (CRM), such as Pacemaker, to achieve a complete HA setup. However, in this tutorial, we will demonstrate how to create a 2-node HA server setup by simply using Heartbeat and a the cloud provider Reserved IP.
High availability is a function of system design that allows an application to automatically restart or reroute work to another capable system in the event of a failure. In terms of servers, there are a few different technologies needed to set up a highly available system. …
In this article, we will go over the specific features of a high-availability application setup and discuss its components at a high level. At the end of each section, we’ll link out to additional resources on the topic to support you as you consider methodologies and best practices.
HAProxy, which stands for High Availability Proxy, is a popular open source software TCP/HTTP Load Balancer and proxying solution.
This tutorial will show you how to create a High Availability HAProxy load balancer setup on the cloud provider, with the support of a Floating IP and the Corosync/Pacemaker cluster stack. The HAProxy load balancers will each be configured to split traffic between two backend application servers. If the primary load balancer goes down, the Floating IP will be moved to the secondary load balancer automatically, allowing service to resume.
As businesses and other organizations increasingly depend on internet-based services, attention is being focused on creating reliable infrastructure that minimizes costly downtime. In this article, we will discuss three areas where improvements could lead to less downtime for your organization. These areas are monitoring and alerting, software deployments, and high availability.
On July 18th, 2016, a CGI application vulnerability, referred to as “HTTPoxy”, was disclosed. By passing an HTTP Proxy header with a request, an attacker can exploit vulnerable deployments by causing HTTP requests to backing services to be redirected to an arbitrary web…
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