Load Balancing using Ldirectord on Linux (Apache) web server Rumi, November 23, 2017 For this setup, we need four nodes (two Apache nodes and two load balancer nodes) and five IP addresses: one for each node and one virtual IP address that will be shared by the load balancer nodes and used for incoming HTTP requests. I will use the following setup here: Apache node… Continue Reading
UDP Load Balancing using PEN Rumi, January 5, 2017 First setup PEN load balancer using this document. After that, keep digging below 🙂 And that’s it, so now if we run pen we see it now has UDP support. root@penudp:~/pen-0.18.0# pen usage: pen [-C addr:port] [-X] [-b sec] [-S N] [-c N] [-e host[:port]] [-t sec] [-x N] [-w… Continue Reading
Understanding NAT, Direct Routing & Tunneling Rumi, May 3, 2016 Virtual Server via NAT The advantage of the virtual server via NAT is that real servers can run any operating system that supports TCP/IP protocol, real servers can use private Internet addresses, and only an IP address is needed for the load balancer. The disadvantage is that the scalability of… Continue Reading
PEN: HTTP Load Balancer Rumi, August 15, 2015August 15, 2015 This is performed on a CentOS 6.x 64 bit machine Install pen which is lightweight simple Load Balancing software. It is TCP protocol based, so it’s possible to balance not only HTTP but SMTP, FTP, LDAP and so on. This example is based on the environment like follows. Configure Pen… Continue Reading
Open Sourced Load Balancer Rumi, October 30, 2014 Linux Virtual Server The Linux Virtual Server Project is a project to cluster many real servers together into a highly available, high-performance virtual server. The LVS load balancer handles connections from clients and passes them on the the real servers (so-called Layer 4 switching) and can virtualize almost any TCP… Continue Reading
CentOS: Configure Piranha as Load Balancer (Direct Routing Method) Rumi, April 19, 2013 I am currently working on a web cluster project using CentOS. In this project, I have 2 web servers running on Apache and mounted the same document root to serve the HTTP content. I also have 2 servers in front of it to become the load balancer and failover to… Continue Reading
Load Balanced IIS behind ldirectord loadbalancer Rumi, February 25, 2013 Cluster Nodes Configurations (IIS6/7 Real Web Server Configuration) 1. Create text file by using Notepad and name it "check.txt" 2. Fill this file with "webserverisworking" string. 3. Move file to "C:\inetpub\wwwroot" or anywhere your web files are. If you are using Windows XP/2003 IIS web server then you should do… Continue Reading