Description of the Illustration peoplesoft_single_availability_domain_ha_topology.png

This image is an architecture diagram of the deployment of a PeopleSoft application in a single availability domain while ensuring high availability.

The architecture consists of a virtual cloud network (VCN) with the bastion, load balancer, PeopleTools client, application, and database hosts placed in separate subnets of VCN in a single availability domain. The bastion host is deployed in a public subnet, and all the other instances are deployed in private subnets.

The bastion host receives requests through the dynamic routing gateway (DRG) and internet gateway. The DRG is the gateway that connects your on-premises network to your cloud network. To enable communication between the DRG and the customer-premises equipment, use IPSec VPN or Oracle Cloud Infrastructure FastConnect. To access your bastion host from the internet, set up an internet gateway (IGW). An IGW is a software-defined router that provides a path for network traffic from your VCN to the internet. You can access the instances in private subnets over port 22 through the bastion host or the DRG if you have set up an IPSec VPN tunnel between your data center and Oracle Cloud Infrastructure DRG.

The load balancer instances receive requests over port 8000 or 8443, and then send it to the web servers in the application tier. The application tier consists of two web server instances in subnet, ElasticSearch servers in another subnet, two application servers and two process scheduler servers in a third subnet. To ensure high availability, redundant instances are deployed in the application tier and all instances are active. The web servers receive application requests from the web environment, the internet and the intranet, through the load balancer. It forwards the requests to the application server. The application servers submit the SQL to database servers over port 1521. The ElasticSearch servers interacts with PeopleSoft web servers and process scheduler servers. PeopleTools client is placed in a separate subnet and it interacts with the PeopleSoft database over port 1521.