Z-NOMP (READY FOR TESTING)

Zclassic - Node Open Mining Portal

This is a Zclassic mining pool based off of Node Open Mining Portal.

Production Usage Notice

This is beta software. All of the following are things that can change and break an existing Z-NOMP setup: functionality of any feature, structure of configuration files and structure of redis data. If you use this software in production then DO NOT pull new code straight into production usage because it can and often will break your setup and require you to tweak things like config files or redis data.

Paid Solution

Usage of this software requires abilities with sysadmin, database admin, coin daemons, and sometimes a bit of programming. Running a production pool can literally be more work than a full-time job.

Community / Support

IRC

• Support / general discussion join: https://zclassic.herokuapp.com

If your pool uses Z-NOMP let us know and we will list your website here.

Some pools using Z-NOMP or node-stratum-module:

• //to be added

Usage

Requirements

• Coin daemon(s) (find the coin's repo and build latest version from source)
• Node.js v0.12+ (follow these installation instructions)
• Redis key-value store v2.6+ (follow these instructions)

Seriously

Those are legitimate requirements. If you use old versions of Node.js or Redis that may come with your system package manager then you will have problems. Follow the linked instructions to get the last stable versions.

Redis security warning: be sure firewall access to redis - an easy way is to include bind 127.0.0.1 in your redis.conf file. Also it's a good idea to learn about and understand software that you are using - a good place to start with redis is data persistence.

0) Setting up coin daemon

Follow the build/install instructions for your coin daemon. Your coin.conf file should end up looking something like this:

daemon=1
rpcuser=zclassicrpc
rpcpassword=securepassword
rpcport=19332

For redundancy, its recommended to have at least two daemon instances running in case one drops out-of-sync or offline, all instances will be polled for block/transaction updates and be used for submitting blocks. Creating a backup daemon involves spawning a daemon using the -datadir=/backup command-line argument which creates a new daemon instance with it's own config directory and coin.conf file. Learn about the daemon, how to use it and how it works if you want to be a good pool operator. For starters be sure to read:

• https://en.bitcoin.it/wiki/Running_bitcoind
• https://en.bitcoin.it/wiki/Data_directory
• https://en.bitcoin.it/wiki/Original_Bitcoin_client/API_Calls_list
• https://en.bitcoin.it/wiki/Difficulty

1) Downloading & Installing

Clone the repository and run npm update for all the dependencies to be installed:

sudo apt-get install build-essential libsodium-dev npm
sudo npm install n -g
sudo n 0.12
git clone https://github.com/joshuayabut/node-open-mining-portal.git z-nomp
cd z-nomp
npm update
npm install

Pool config

Take a look at the example json file inside the pool_configs directory. Rename it to zclassic.json and change the example fields to fit your setup.

Description of options:

{
    "enabled": true, //Set this to false and a pool will not be created from this config file
    "coin": "litecoin.json", //Reference to coin config file in 'coins' directory

    "address": "mi4iBXbBsydtcc5yFmsff2zCFVX4XG7qJc", //Address to where block rewards are given

    /* Block rewards go to the configured pool wallet address to later be paid out to miners,
       except for a percentage that can go to, for examples, pool operator(s) as pool fees or
       or to donations address. Addresses or hashed public keys can be used. Here is an example
       of rewards going to the main pool op, a pool co-owner, and Z-NOMP donation. */
    "rewardRecipients": {
        "n37vuNFkXfk15uFnGoVyHZ6PYQxppD3QqK": 1.5, //1.5% goes to pool op
        "mirj3LtZxbSTharhtXvotqtJXUY7ki5qfx": 0.5, //0.5% goes to a pool co-owner
    },

    "paymentProcessing": {
        "enabled": true,

        /* Every this many seconds get submitted blocks from redis, use daemon RPC to check
           their confirmation status, if confirmed then get shares from redis that contributed
           to block and send out payments. */
        "paymentInterval": 30,

        /* Minimum number of coins that a miner must earn before sending payment. Typically,
           a higher minimum means less transactions fees (you profit more) but miners see
           payments less frequently (they dislike). Opposite for a lower minimum payment. */
        "minimumPayment": 0.01,

        /* This daemon is used to send out payments. It MUST be for the daemon that owns the
           configured 'address' that receives the block rewards, otherwise the daemon will not
           be able to confirm blocks or send out payments. */
        "daemon": {
            "host": "127.0.0.1",
            "port": 19332,
            "user": "testuser",
            "password": "testpass"
        }
    },

    /* Each pool can have as many ports for your miners to connect to as you wish. Each port can
       be configured to use its own pool difficulty and variable difficulty settings. varDiff is
       optional and will only be used for the ports you configure it for. */
    "ports": {
        "3032": { //A port for your miners to connect to
            "diff": 32, //the pool difficulty for this port

            /* Variable difficulty is a feature that will automatically adjust difficulty for
               individual miners based on their hashrate in order to lower networking overhead */
            "varDiff": {
                "minDiff": 8, //Minimum difficulty
                "maxDiff": 512, //Network difficulty will be used if it is lower than this
                "targetTime": 15, //Try to get 1 share per this many seconds
                "retargetTime": 90, //Check to see if we should retarget every this many seconds
                "variancePercent": 30 //Allow time to very this % from target without retargeting
            }
        },
        "3256": { //Another port for your miners to connect to, this port does not use varDiff
            "diff": 256 //The pool difficulty
        }
    },

    /* More than one daemon instances can be setup in case one drops out-of-sync or dies. */
    "daemons": [
        {   //Main daemon instance
            "host": "127.0.0.1",
            "port": 19332,
            "user": "testuser",
            "password": "testpass"
        }
    ],

    /* This allows the pool to connect to the daemon as a node peer to receive block updates.
       It may be the most efficient way to get block updates (faster than polling, less
       intensive than blocknotify script). It requires the additional field "peerMagic" in
       the coin config. */
    "p2p": {
        "enabled": false,

        /* Host for daemon */
        "host": "127.0.0.1",

        /* Port configured for daemon (this is the actual peer port not RPC port) */
        "port": 19333,

        /* If your coin daemon is new enough (i.e. not a shitcoin) then it will support a p2p
           feature that prevents the daemon from spamming our peer node with unnecessary
           transaction data. Assume its supported but if you have problems try disabling it. */
        "disableTransactions": true
    },
    
    /* Enabled this mode and shares will be inserted into in a MySQL database. You may also want
       to use the "emitInvalidBlockHashes" option below if you require it. The config options
       "redis" and "paymentProcessing" will be ignored/unused if this is enabled. */
    "mposMode": {
        "enabled": false,
        "host": "127.0.0.1", //MySQL db host
        "port": 3306, //MySQL db port
        "user": "me", //MySQL db user
        "password": "mypass", //MySQL db password
        "database": "zcl", //MySQL db database name

        /* Checks for valid password in database when miners connect. */
        "checkPassword": true,

        /* Unregistered workers can automatically be registered (added to database) on stratum
           worker authentication if this is true. */
        "autoCreateWorker": false
    }
}

[Optional, recommended] Setting up blocknotify

1. In config.json set the port and password for blockNotifyListener
2. In your daemon conf file set the blocknotify command to use:

node [path to cli.js] [coin name in config] [block hash symbol]

Example: inside zclassic.conf add the line

blocknotify=node /home/z-nomp/scripts/cli.js blocknotify zclassic %s

Alternatively, you can use a more efficient block notify script written in pure C. Build and usage instructions are commented in scripts/blocknotify.c.

3) Start the portal

npm start

Optional enhancements for your awesome new mining pool server setup:

• Use something like forever to keep the node script running in case the master process crashes.
• Use something like redis-commander to have a nice GUI for exploring your redis database.
• Use something like logrotator to rotate log output from Z-NOMP.
• Use New Relic to monitor your Z-NOMP instance and server performance.

Upgrading Z-NOMP

When updating Z-NOMP to the latest code its important to not only git pull the latest from this repo, but to also update the node-stratum-pool and node-multi-hashing modules, and any config files that may have been changed.

• Inside your Z-NOMP directory (where the init.js script is) do git pull to get the latest Z-NOMP code.
• Remove the dependenices by deleting the node_modules directory with rm -r node_modules.
• Run npm update to force updating/reinstalling of the dependencies.
• Compare your config.json and pool_configs/coin.json configurations to the latest example ones in this repo or the ones in the setup instructions where each config field is explained. You may need to modify or add any new changes.

Credits

• Matthew Little / zone117x - developer of NOMP
• Jerry Brady / mintyfresh68 - got coin-switching fully working and developed proxy-per-algo feature
• Tony Dobbs - designs for front-end and created the NOMP logo
• LucasJones - got p2p block notify working and implemented additional hashing algos
• vekexasia - co-developer & great tester
• TheSeven - answering an absurd amount of my questions and being a very helpful gentleman
• UdjinM6 - helped implement fee withdrawal in payment processing
• Alex Petrov / sysmanalex - contributed the pure C block notify script
• svirusxxx - sponsored development of MPOS mode
• icecube45 - helping out with the repo wiki
• Fcases - ordered me a pizza <3
• Those that contributed to node-stratum-pool

License

Released under the MIT License. See LICENSE file.