Run CKPOOL solo This was written for a user in KanoPool's Bitcoin discord. Adapted from: https://github.com/edgycorner/CK-Pool-installation-with-Bitcoin-Core-22.0-with-fixes-on-Ubuntu-

Step 1:

sudo apt-get update

Step 2:

Installing git, build-essentials and yasm

sudo apt install git build-essential yasm sudo libtool

Enter y/yes whenever prompted for response

We will proceed with the installation of CK pool

Clone the ckpool-solo repo with this command:

git clone https://bitbucket.org/ckolivas/ckpool/src/master/

*if you get an error saying git not found or installed, run sudo apt-get install git and then run the above command

Step 3:

move into ckpool directory with following command

cd master

Step 4:

We will make a few amends to make it work with bitcoin core 22.0, since it's depreciated

nano src/bitcoin.c

Search for "JSON failed to decode GBT", you can search with ctrl+w in nano editor

We just have to replace three lines of code, which are

if (unlikely(!previousblockhash || !target || !version || !curtime || !bits || !coinbase_aux || !flags)) {
LOGERR("JSON failed to decode GBT %s %s %d %d %s %s", previousblockhash, target, version, curtime, bits, flags);
goto out;
}

with the following:

if(!flags) {
flags = calloc(1, 1);
}

if (unlikely(!previousblockhash || !target || !version || !curtime || !bits || !coinbase_aux)) {
LOGERR("JSON failed to decode GBT %s %s %d %d %s %s", previousblockhash, target, version, curtime, bits, flags);
goto out;	
 	}
	

ctlr+x then y then enter

Next, edit ckpool.h and comment out line 357:

Replace:

ckpool_t *global_ckp; 

With

//ckpool_t *global_ckp; //Commented to ignore multiple definitions error
ckpool_t &global_ckp_ref = *global_ckp;

dpkg -l pkg-config if not - sudo apt-get install pkg-config

Step 5:

Configue the package

autoreconf -i

Step 6:

Build

sudo ./autogen.sh; sudo ./configure; sudo make

Step 7:

Install ckpool so that we can call it from anywhere

sudo make install

Step 8:

Configure bitcoind rpc and set notifier

We will begin with stopping already running bitcoind

bitcoin-cli stop

Step 9:

Edit your bitcoin.conf

cd $HOME/.bitcoin/; nano bitcoin.conf

add the following lines

server=1
rpcuser=user
rpcpassword=pass
rpcallowip=127.0.0.1
rpcauth=user:somelonghashthatyoumadesecure

You also need to make sure you have rpcauth setup: https://jlopp.github.io/bitcoin-core-rpc-auth-generator/ https://github.com/bitcoin/bitcoin/blob/master/share/rpcauth/rpcauth.py

ctlr+x then y then enter

Step 10:

Set up a notifier script

sudo nano /usr/bin/notify.sh

Copy paste this

#!/bin/bash
/usr/bin/notifier -s /opt

ctrl+x then press y then enter

Step 11:

Start bitcoind again

bitcoind -daemon -blocknotify=/usr/bin/notify.sh

Step 12:

Edit ckpool.conf to replace serverurl, nodeserver, trusted with "localhost:3336"

it should look like this, where localhost is the address of your server

"serverurl" : [

        "localhost:3333"
],

"nodeserver" : [

        "localhost:3335"
	
],
"trusted" : [

        "localhost:3336"
	
]

Edit upstream url too, with localhost:3336

"upstream" : "localhost:3336"

Make sure to edit btc address in the config file, to match yours, and the notifier section.

Step 13:

Run the pool

sudo ckpool -L

Point your miner to stratum+tcp://:3333 with any username and password.

But really, don't do this. There is a high risk you'll lose a block if you get astronomically lucky and actually solve one. Mine at kano's pool: kano.is