Starting point to build your own mining pool server

[gokudev]

Like the title suggests. I am wondering how much effort is required to build your own mining pool server. I would like to target getwork and startum protocol and support bitcoin and litecoin and as many altcoins as possible. I know there are already solutions available, but I like to build my own.

[bonesoul]

existing project will be a good start;

https://github.com/CoiniumServ/CoiniumServ
https://github.com/Crypto-Expert/stratum-mining
https://github.com/zone117x/node-open-mining-portal

[Sealed]

How do I switch my virtual machine to another pool, though?? Thank you 1,000 times.