Here are the prerequisities to use HA and DR on Cisco IoT FND with Postgres:

• Deploy EnterpriseDB PostgreSQL Standard v16 with Postgres Distributed (PGD), and manage database upgrades, backup, and restore in coordination with the EDB vendor.

• Provision separate Bare Metal servers or VMs for Cisco IoT FND application servers, the EDB Witness node, and PostgreSQL data nodes, with the PGD Proxy co-located on the data nodes; do not use the standalone OVA for HA deployments.

• Deploy the solution across multiple data centers with reliable, low‑latency network connectivity, including multiple PostgreSQL data nodes and a witness node distributed across sites.

• Configure a PGD Proxy for each PostgreSQL data node and ensure reachability from all Cisco IoT FND application servers.

• Deploy two active Cisco IoT FND application servers in different data centers and enable secure REST‑based communication between them.

• Deploy a high‑availability DNS solution such as F5 GSLB with the required licenses, and configure Cisco IoT FND access using fully qualified domain names.

• Install custom JBoss web certificates on Cisco IoT FND servers to enable secure inter‑application communication and accept the defined security behavior when using self‑signed certificates.

• Run the setupCgms.sh script with high‑availability options, including configuration of PGD proxy addresses and database node details.

• Acknowledge architectural constraints and requirements, including unsupported FogD HA, InfluxDB HA, and TPS HA, adequate infrastructure capacity for large‑scale deployments, and compliance with Cisco security standards.