# Ports Being Used in Percona Postgres HA Environment

**URL:** <https://forums.percona.com/t/ports-being-used-in-percona-postgres-ha-environment/31096>\
**Category:** Percona Distribution for PostgreSQL\
**Tags:** closed-no-reply\
**Created:** [June 19, 2024, 7:54am UTC](https://forums.percona.com/t/ports-being-used-in-percona-postgres-ha-environment/31096 "2024-06-19T07:54:54Z")\
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**Author:** ![Brand05](https://avatars.discourse-cdn.com/v4/letter/b/3be4f8/32.png) [@Brand05](https://forums.percona.com/u/Brand05)\
**Post date:** [June 19, 2024, 7:54am UTC](https://forums.percona.com/t/ports-being-used-in-percona-postgres-ha-environment/31096/1 "2024-06-19T07:54:54Z")

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I want to set up an HA Environment using Alma Linux 9 and Percona 15.7 Distribution. Is there a list of firewall ports that needs to be open especially if I want to deploy the Nodes at 2 Data Centres? I have a list of the default ports will there be any other ports that I need to make note of. PostgreSQL: The default port for PostgreSQL is 5432. This needs to be open for database connections.  
HAProxy: For HAProxy, you might have two ports open for connections:  
Port 5000 for Primary Connections (Read-Write)  
Port 5001 for Standby Connections (Read-Only).  
ETCD: ETCD commonly uses port 2379 for client communication and 2380 for server-to-server communication.  
PMM Client: The PMM Client’s default listen port is 7777. Depending on your architecture, other ports may also need to be exposed.  
Keepalived: Keepalived uses the VRRP protocol, which typically operates on IP protocol number 112.