For a single node installation of Pipelines, the PostgreSQL database is by default installed on the same node as Pipelines. It may be optionally configured as an external database.
Pipelines HA requires an external database for common use by all HA nodes.
Pipelines supports the following versions of PostgreSQL.
10.x
11.x
12.x
13.x
Pipelines uses Redis 6.2.6 and bundles a Redis package along with the installer.
RabbitMQ 3.8 is installed as part of the Pipeline installation for every node In case of HA architecture, it uses queue mirroring between the different RabbitMQ nodes. You should not use any other external RabbitMQ instance.