How to setup clustering in Postgresql?

Do I have to setup replication to have clustering setup in Postgresql? Can I not have just clustering setup in two servers.

Postgresql 9.5.0 CentOS 6.7

ps- installed postgres on two nodes following below link:

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While you will always be able to manually configure and deploy a PostgreSQL cluster on Droplets…

As of Feb 14, 2019, DigitalOcean’s Managed Databases product allows you to create managed PostgreSQL clusters quickly via the Control Panel UI or API.

For more information:

Hope you like it!

Hi kshitijajoshi , Did u find a way to set up PostgreSQL HA cluster ? If yes How to configure a 2-node HA PostgreSQL cluster which load balances the requests
(both read/write requests) from the clients?
My specifications are:
OS: Ubuntu 12.04.4 LTS
PostgreSQL 9.5
Disk Size:95GB
RAM size: 8GB

I am not a big Postgre user myself but doing a bit of searching found this. It sounds like Postgre only supports replication ( a couple types ) out of the box but there are third party utilities that allow you to create a clustered postgre environment.