xmr-node-proxy

Setup Instructions

Based on a clean Ubuntu 16.04 LTS minimal install

Deployment via Installer

Create a user 'nodeproxy' and assign a password (or add an SSH key. If you prefer that, you should already know how to do it)

useradd -d /home/nodeproxy -m -s /bin/bash nodeproxy
passwd nodeproxy

Add your user to /etc/sudoers, this must be done so the script can sudo up and do it's job. We suggest passwordless sudo. Suggested line: <USER> ALL=(ALL) NOPASSWD:ALL. Our sample builds use: nodeproxy ALL=(ALL) NOPASSWD:ALL

echo "nodeproxy ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers

Log in as the NON-ROOT USER you just created and run the deploy script. This is very important! This script will install the proxy to whatever user it's running under!

curl -L https://raw.githubusercontent.com/Snipa22/xmr-node-proxy/master/install.sh | bash

Once it's complete, copy example_config.json to config.json and edit as desired.
Run: source ~/.bashrc This will activate NVM and get things working for the following pm2 steps.
Once you're happy with the settings, go ahead and start all the proxy daemon, commands follow.

cd ~/xmr-node-proxy/
pm2 start proxy.js --name=proxy --log-date-format="YYYY-MM-DD HH:mm Z"
pm2 save

You can check the status of your proxy by either issuing

pm2 logs proxy

or using the pm2 monitor

pm2 monit

Known Issues

VM's with 512Mb of ram or less will need some swap space in order to compile the C extensions for node. Bignum and the CN libraries can chew some serious memory during compile. In regards to this, one of our users has put together a guide for T2.Micro servers: https://docs.google.com/document/d/1m8E4_pDwKuFo0TnWJaO13LDHqOmbL6YrzyR6FvzqGgU (Credit goes to MayDay30 for his work with this!)

If not running on an Ubuntu 16.04 system, please make sure your kernel is at least 3.2 or higher, as older versions will not work for this.

Many smaller VM's come with Ulimits set very low, we suggest looking into how to tweak the ulimits for your systems higher. In particular nofile (Number of files open) needs to be raised for high-usage instances.

If your system doesn't have AES-NI, then it will throw an error during the node-multi-hashing install, as this is AES-NI required. If this is the case, go ahead and change the following line: "multi-hashing": "git+https://github.com/Snipa22/node-multi-hashing-aesni.git", to: "multi-hashing": "git://github.com/clintar/node-multi-hashing.git#Nan-2.0", In your packages.json, then do a npm install, and it should pass.

Performance

The proxy gains a massive boost over a basic pool, by accepting that the majority of the hashes submitted /will/ not be valid, as they do not exceed the required difficulty of the pool. Due to this the proxy really doesn't bother attempting to validate the hash state and/or value until the difficulty of the share exceeds the difficulty set by the pool.

In testing, we've seen AWS T2.Micro instances taking upwards of 2k connections, with T2.Smalls taking 6k. The proxy is extremely light weight, and while there are more features on the way, it's our goal to keep the proxy as light weight as possible.

Configuration Guidelines

Please check the wiki for information on configuration

Developer Donations

The proxy comes configured for a 1% donation, this is easily toggled inside of it's configuration. If you'd like to make a one time donation, the addresses are as follows:

XMR - 44Ldv5GQQhP7K7t3ZBdZjkPA7Kg7dhHwk3ZM3RJqxxrecENSFx27Vq14NAMAd2HBvwEPUVVvydPRLcC69JCZDHLT2X5a4gr
BTC - 114DGE2jmPb5CP2RGKZn6u6xtccHhZGFmM

Installation/Configuration Assistance

If you need help installing the pool from scratch, please have your servers ready, which would be Ubuntu 16.04 servers, blank and clean, DNS records pointed. These need to be x86_64 boxes with AES-NI Available.

Installation asstiance is 4 XMR, with a 2 XMR deposit, with remainder to be paid on completion.
Configuration assistance is 2 XMR with a 1 XMR deposit, and includes debugging your proxy configurations, ensuring that everything is running, and tuning for your uses/needs.

SSH access with a sudo-enabled user will be needed for installs, preferably the user that is slated to run the pool.

Please contact Snipa at: proxy_installs@snipanet.com or via IRC on irc.freenode.net in #monero-pools

Known Working Pools

If you'd like to have your pool added, please make a pull request here, or contact Snipa on IRC!

GSI/xmr-node-proxy