Posts Tagged “high-availability”

Creating a two-node RHEL cluster with Virtual IP using CMAN and Pacemaker.

CMAN v3 is a Corsync plugin that monitors the names and number of active cluster nodes in order to deliver membership and quorum information to clients (such as the Pacemaker daemons). We are using this to have a VIP (Virtual IP) being made high available.

Written on October 6, 2015
linux ha high-availability cman pacemaker heartbeat haproxy


HA Setup - `heartbeat` for `nginx`.

Heartbeat is a daemon that provides cluster infrastructure (communication and membership) services to its clients. This allows clients to know about the presence (or disappearance!) of peer processes on other machines and to easily exchange messages with them. NGINX is a free, open-source, high-performance HTTP server and reverse proxy, as well as an IMAP/POP3 proxy server. NGINX is known for its high performance, stability, rich feature set, simple configuration, and low resource consumption.

Written on January 6, 2015
linux heartbeat nginx http httpd replication load-balancing high-availability


SpagoBI Tomcat Clustering Using `mod_jk` and `httpd` on Centos - In-Memory Session Replication.

In an earlier post we did a basic session based replication, but the session was not redundant.

Written on January 4, 2015
linux spago-bi bi tomcat http httpd replication load-balancing high-availability


Setting up `NGINX` for `HTTP` load balancing.

NGINX is a free, open-source, high-performance HTTP server and reverse proxy, as well as an IMAP/POP3 proxy server. NGINX is known for its high performance, stability, rich feature set, simple configuration, and low resource consumption.

Written on January 3, 2015
linux nginx http httpd load-balancing high-availability


httpd HA using Heartbeat.

httpd is the Apache HyperText Transfer Protocol (HTTP) server program. It is designed to be run as a standalone daemon process. When used like this it will create a pool of child processes or threads to handle requests. Heartbeat is a daemon that provides cluster infrastructure (communication and membership) services to its clients. This allows clients to know about the presence (or disappearance!) of peer processes on other machines and to easily exchange messages with them.

Written on January 3, 2015
linux heartbeat high-availability httpd http