I am using Openhab cloud, a node.js app that uses redis & mongo. I have deployed 2 of these instances onto Ubuntu Linux in AWS EC2.
The App is here: [login to view URL]
Primary/Secondary. They sit behind an AWS ELB load balancer.
There is also a third server, an Ubuntu Mongo DB server.
I can successfully use 1 of the Node.JS App servers to the Mongo Server, but when I use 2 (ie I add both servers into the ELB group) I get errors (504 Gateway) and other issues.
I need someone to solve the issue and make my application highly available behind the ELB in AWS and using the external Mongo Server
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