haproxy-webapp-cluster

A Simple Go Web App Behind a Load Balancer (HAProxy). A Simple Go Web App Behind a Load Balancer (HAProxy). This app simply displays the name of the node executing it and the current datetime.

We use vagrant to create a cluster. The Vagrantfile creates 3 nodes (n1, n2, n3): n1 - Web App instance 1 172.20.20.11 n2 - Web App instance 2 172.20.20.12 n3 - HAProxy serving site on port :39090. This port will be forwarded to the host. 172.20.20.13 The load balancer will roundrobin between n1, n2

These nodes are connected with private network: 172.20.20.x

To build:

cd webapp/ ./build.sh cd ..

To Run:

vagrant up

To Test:

curl http://:39090/

Here is sample output: This host is n1 date: 2016-03-12 21:23:40.456791077 +0000 UTC .... This host is n2 date: 2016-03-12 21:23:41.456791077 +0000 UTC