Install RskJ in centos

Running the script below you will install and run the RSK node in CentOS distribution:

#!/bin/bash
## Basic Steps to setup your CentOS environment and RSKJ Node.

## Install JAVA and WGET
sudo yum install java-1.8.0-openjdk epel-release wget jq -y

## ADD RSK User & Group
sudo adduser rsk

## Create APP Directories
sudo mkdir /var/lib/rsk
sudo mkdir /var/log/rsk
sudo mkdir /etc/rsk
sudo mkdir /usr/share/rsk
sudo chown rsk:rsk /var/log/rsk/
sudo chown rsk:rsk /var/lib/rsk/

## Download Latest RSK Release
wget -q -nv -O- https://api.github.com/repos/rsksmart/rskj/releases/latest 2>/dev/null |  jq -r '.assets[]' |grep browser |cut -d ":" -f 2,3 |tr -d \" |sudo wget -qi - -O /usr/share/rsk/rsk.jar

## Download RSK Config files.

sudo wget https://raw.githubusercontent.com/rsksmart/artifacts/master/rskj-ubuntu-installer/config/testnet.conf -O /etc/rsk/testnet.conf
sudo wget https://raw.githubusercontent.com/rsksmart/artifacts/master/rskj-ubuntu-installer/config/mainnet.conf -O /etc/rsk/mainnet.conf
sudo wget https://raw.githubusercontent.com/rsksmart/artifacts/master/rskj-ubuntu-installer/config/regtest.conf -O /etc/rsk/regtest.conf
sudo wget https://raw.githubusercontent.com/rsksmart/artifacts/master/rskj-ubuntu-installer/config/logback.xml -O /etc/rsk/logback.xml

## Set Default RSK Network

sudo ln -s /etc/rsk/mainnet.conf /etc/rsk/node.conf
### sudo ln -s /etc/rsk/testnet.conf /etc/rsk/node.conf
### sudo ln -s /etc/rsk/regtest.conf /etc/rsk/node.conf

## Create RSK systemd Service

cat << EOF | sudo tee /etc/systemd/system/rsk.service
[Unit]
Description=RSK Node

[Service]
LimitNOFILE=500000
Type=simple
ExecStart=/usr/bin/java -Dlogback.configurationFile=/etc/rsk/logback.xml -Drsk.conf.file=/etc/rsk/node.conf -cp /usr/share/rsk/rsk.jar co.rsk.Start 2>&1 &
ExecStop=/bin/kill -9 $(/bin/ps -U rsk -o pid h)
PIDFile=/var/run/rsk.pid
User=rsk

[Install]
WantedBy=multi-user.target
EOF

## Enable RSK Service
sudo systemctl enable rsk.service

## Start RSK node
sudo service rsk start

By default, the node connects to MainNet. If you want to change the network read this section. If you want to change some configuration, please refer to our RSK node configuration section.