How does one go about setting up a mining pool?

Question

There are already a number of mining pools out for Monero, are there instructions or software that people can use to set up their own mining pool?

Answer 1

The Monerodo OS from gingeropolous is a customized version of Ubuntu that includes Monero Core, Monero Pool Server, Nvidia mining software, various CPU mining software, and the MiniNodo Wallet server, already preinstalled and is easily configured with a simple text menu interface.

Step by step Monerodo OS instructions

Alternatively this CryptoNote pool mining software is free and open source

git clone https://github.com/zone117x/node-cryptonote-pool.git pool
cd pool
npm update

Configuration instructions can be found here

Answer 2

Edit 11/19/2017: another pool mining software has been crowdfunded. Source and instructions can be found here.

People with limited linux skills should try Monerodo, which is an ubuntu with a bunch of monero software pre-installed, including a pool software.

Otherwise, zone117x node-cryptonote-pool is a crowdfunded open source mining pool software and is the mostly used, including this popular fork

There is also this relatively recent software written in Golang.