Monero Mining with xmr-stak-cpu on Centos 7

Step-by-step instructions to install & configure xmr-stak-cpu, Xmr-stak-cpu performs much better for Monero than any other.

yum -y install epel-release
yum -y install centos-release-scl cmake3 hwloc-devel libmicrohttpd-devel openssl-devel git screen nano
yum -y install devtoolset-4-gcc*
scl enable devtoolset-4 bash
git clone https://github.com/fireice-uk/xmr-stak-cpu.git
cd xmr-stak-cpu
cmake3 .
make install

After make install runs you will need to change directories:
Then you will run xmr-stak-cpu for the first time

cd bin/ 

chmod +x xmr-stak-cpu
./xmr-stak-cpu

You will notice that after the first run you are given a notice to edit your config.txt. Follow the instructions provided and also make sure to edit the following lines in bin/config.txt:

"pool_address" : "pool.usxmrpool.com:3333",
"wallet_address" : "47TGpTWnqGzS3cQtCXoF9gYURBftv4snFdPL8Zce5VTdJwC4i2mE9jkZDWCyiDSqLYhCkhq3LQVzDC2BT6BhY6R5Qdh5hRB",
"pool_password" : "x",

After you have the config.txt edited correctly simply run xmr-stak-cpu once more.
If you run into issues related to mmap this means you need to enable hugepages. To do this type the following commands:

sysctl -w vm.nr_hugepages=128
nano /etc/sysctl.conf

At the end of the sysctl.conf file add:

vm.nr_hugepages=128

To start mining at boot:

 ln -s /<installed path>/xmr-stak-cpu/bin/xmr-stak-cpu  /etc/init.d/

 

Connection Details

There are multiple mining pool servers in various locations. Select the closest one to you in order to reduce the number of expired shares. If located in Europe we recommend using pool.minexmr.com since this will be more resilient in the event of one of our hosting providers experiencing issues.

Europe (France, Germany): pool.minexmr.com

France: fr.minexmr.com

Germany: de.minexmr.com

Canada: ca.minexmr.com

Mining Ports

Port: 4444,5555

Starting Difficulty: 15000

Description: Low range CPU/GPU

Port: 7777, 80, 443

Starting Difficulty: 35000

Description: Mid range CPU/GPU

Port: 3333

Starting Difficulty: 200000

Description: Modern High End, Nicehash, etc

Port: 6666

Starting Difficulty: 35000

Description: SSL port for Claymore

The difficulty auto adjusts on all ports, the only difference is your starting diff. All ports support keepalived. Multiple mining servers are setup with a round robin DNS, so please don't hard code IP addresses
Fixed diff: Append +DIFF to your username, min diff is 10000. eg WALLET+DIFF , WALLET.workerID+DIFF or WALLET.payID.workerID+DIFF as username.


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