HA Requirements

Customer Managed Applies to customer-managed instances of Alation

Applies from version 4.8 and above

System Sizing

The Primary and Secondary systems should be identically sized. Note that it is especially important that the Secondary system has the same amount of Data and Backup disk space as the Primary.

Ports information

For replication setup we need the following ports open between all servers in a cluster.

Service

Port

Purpose

postgres

5432

accounts, articles, query logs

kvstore

8088

sql text

replication-service

2022

used for signaling and file replication