The most basic configuration only requires a single EC2 instance. It is, however, highly recommended to use a load balancer (ELB) in front of the server, so you can use an SSL certificate installed there and terminate SSL traffic at the load balancer. This approach reduces the load from the server and greatly simplifies the management of the certificates. It will also allow you to not expose the Yarkon Admin Console server to the outside world, thus reducing your security concerns. If you prefer to not use an ELB, you will have to install your SSL cert on the server itself. The procedure is standard to a Unix server (the AMI is based on an Ubuntu Server 16.04 LTS).
It is recommended to start with this configuration, and only upgrade to a more complex (and usually costlier) architecture in case of a performance issue or critical business need.
To achieve the goal of high-availability, you will have to install at least two instances, in different availability zones.
In this case, a load balancer (ELB) is required. A shared database is also required, so this configuration will need access to an SQL based database. The standard configuration we use is using MySQL, but it should work just as well with other RDBMs. Currently supported are:
You can use an AWS RDS based database, or any other stand-alone database server.
Please contact us to get the full details for this type of set up.
The next step after high-availability is high-performance. Only take this step if you are sure any performance related issue is due to the load on the servers, and you confirmed that adding a server will not solve the issue.
Using a Content Delivery Network (such as AWS CloudFront) will give your end-users improved download time when they open the application in a browser.
A minor change to the server setup is required. Please contact us to get the full details for this type of set up.