Step 1 - Provisioning hosts v5.6
Provisioning hosts
The first step in the process of deploying PGD is to provision and configure hosts.
You can deploy to virtual machine instances in the cloud with Linux installed, on-premises virtual machines with Linux installed, or on-premises physical hardware, also with Linux installed.
Whichever supported Linux operating system and whichever deployment platform you select, the result of provisioning a machine must be a Linux system that you can access using SSH with a user that has superuser, administrator, or sudo privileges.
Each machine provisioned must be able to make connections to any other machine you're provisioning for your cluster.
On cloud deployments, you can do this over the public network or over a VPC.
On-premises deployments must be able to connect over the local network.
Cloud provisioning guides
If you're new to cloud provisioning, these guides may provide assistance:
| Vendor | Platform | Guide |
|---|---|---|
| Amazon | AWS | Tutorial: Get started with Amazon EC2 Linux instances |
| Microsoft | Azure | Quickstart: Create a Linux virtual machine in the Azure portal |
| GCP | Create a Linux VM instance in Compute Engine |
Configuring hosts
Create an admin user
We recommend that you configure an admin user for each provisioned instance. The admin user must have superuser or sudo (to superuser) privileges. We also recommend that the admin user be configured for passwordless SSH access using certificates.
Ensure networking connectivity
With the admin user created, ensure that each machine can communicate with the other machines you're provisioning.
In particular, the PostgreSQL TCP/IP port (5444 for EDB Postgres Advanced Server, 5432 for EDB Postgres Extended and community PostgreSQL) must be open to all machines in the cluster. If you plan to deploy PGD Proxy, its port must be open to any applications that will connect to the cluster. Port 6432 is typically used for PGD Proxy.
Worked example
For this example, three hosts with Red Hat Enterprise Linux 9 were provisioned:
- host-one
- host-two
- host-three
Each is configured with an admin user named admin.
These hosts were configured in the cloud. As such, each host has both a public and private IP address.
| Name | Public IP | Private IP |
|---|---|---|
| host-one | 172.24.117.204 | 192.168.254.166 |
| host-two | 172.24.113.247 | 192.168.254.247 |
| host-three | 172.24.117.23 | 192.168.254.135 |
For the example cluster, /etc/hosts was also edited to use those private IP addresses:
192.168.254.166 host-one 192.168.254.247 host-two 192.168.254.135 host-three