Install OpenJDK

Check for any pre-installed Java packages:

rpm -qa | grep -E 'java|jdk|gcj'

If found, remove them forcefully:

rpm -qa | grep java | xargs sudo rpm -e --nodeps

List available OpenJDK 8 packages in the yum repository:

yum list java-1.8*

Install OpenJDK 8:

sudo yum install java-1.8.0-openjdk -y

Set environment variables by editing /etc/profile:

JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk
export JAVA_HOME
PATH=$JAVA_HOME/bin:$PATH
export PATH
CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export CLASSPATH

Apply the changes:

source /etc/profile

Verify the installation:

echo $JAVA_HOME
java -version

Configure Hostname and Domain Mapping

Set the system hostname (e.g., consul) in /etc/hostname:

echo consul | sudo tee /etc/hostname

Add a entry to /etc/hosts to map the IP address to the hostname:

echo "192.168.0.101 consul" | sudo tee -a /etc/hosts

Install Python and pip

Enable the EPEL repository and install Python pip:

sudo yum install epel-release -y
sudo yum install python-pip -y

Install Apache Maven

Download and extract Maven:

curl -O https://archive.apache.org/dist/maven/maven-3/3.6.2/binaries/apache-maven-3.6.2-bin.tar.gz
sudo tar -zxvf apache-maven-3.6.2-bin.tar.gz -C /usr/local/

Configure Maven enviroment variables in /etc/profile:

MAVEN_HOME=/usr/local/apache-maven-3.6.2
export MAVEN_HOME
export PATH=$PATH:$MAVEN_HOME/bin

Reload the profile and verify:

source /etc/profile
mvn -version

Create a local repository directory and set permissions:

sudo mkdir -p /usr/local/apache-maven-3.6.2/repository
sudo chmod -R 777 /usr/local/apache-maven-3.6.2/repository

Update settings.xml to use the custom repository path:

<localRepository>/usr/local/apache-maven-3.6.2/repository</localRepository>