How To Install and Configure Apache Spark on Oracle Linux 9

in This Tutorial you will Learn " How To Install and Configure Apache Spark on Oracle Linux 9"
Apache Spark is a multi-language engine for executing data engineering, data science, and machine learning on single-node machines or clusters.
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Server - Os:  Oracle Linux Server 9.0   64Bit      | IP -192.168.1.50        |Hostname - server.testbox.com
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cat /etc/system-release ; hostname ; hostname -I ; dnf groupinstall "Development Tools" -y

sudo dnf update -y ; sudo yum install java-17-openjdk java-17-openjdk-devel -y
sudo dnf -y install wget curl -y
curl -L -b "oraclelicense=a" -O https://download.oracle.com/java/17/latest/jdk-17_linux-x64_bin.rpm
sudo rpm -Uvh jdk-17_linux-x64_bin.rpm
java -version


sudo tee /etc/profile.d/java17.sh <<EOF
export JAVA_HOME=\$(dirname \$(dirname \$(readlink \$(readlink \$(which javac)))))
export PATH=\$PATH:\$JAVA_HOME/bin
export CLASSPATH=.:\$JAVA_HOME/jre/lib:\$JAVA_HOME/lib:\$JAVA_HOME/lib/tools.jar
EOF


source /etc/profile.d/java17.sh
echo $JAVA_HOME
echo $PATH
echo $CLASSPATH

curl -s https://api.github.com/repos/lampepfl/dotty/releases/latest| grep browser_download_url  | egrep '.tar.gz' | cut -d '"' -f 4 | wget -i -
tar -xf scala3-*.tar.gz
mv scala3-*/ /usr/local/share/scala


sudo tee  -a ~/.bashrc <<EOF
export SCALA_HOME=/usr/local/share/scala
export PATH=\$PATH:\$SCALA_HOME/bin
EOF


source ~/.bashrc
scala -version
cd ~/

Offcial web - https://spark.apache.org/downloads.html
curl -O https://dlcdn.apache.org/spark/spark-3.3.2/spark-3.3.2-bin-hadoop3.tgz
tar xvf spark-3.3.2-bin-hadoop3.tgz
mv spark-3.3.2-bin-hadoop3/ /usr/local/spark

sudo nano ~/.bashrc
#add this line
export PATH=$PATH:/usr/local/spark/bin

source ~/.bashrc


spark-shell
sc.version
spark.version
http://<server_ip_address>:4040
firewall-cmd --zone=public --add-port=4040/tcp --permanent ; firewall-cmd --reload
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Smalltalk is an object-oriented, dynamically typed reflective programming language.

 Smalltalk is an object-oriented, dynamically typed reflective programming language.
apt update ; apt-get install gnu-smalltalk -y
whereis gst ; which gst
gst --version

nano helloworld.st
"Hello world Program"

'Hello World!' printNl !

gst helloworld.st
Smalltalk interactive mode - gst -q
'Hello World!' printNl !
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How To Install and Configure Apache Solr on Oracle Linux 9

 in This Tutorial you will Learn " How To Install and Configure Apache Solr on Oracle Linux 9"
Apache Solr is an open source search platform built upon a Java library called Lucene.
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Server - Os:  Oracle Linux Server 9.0   64Bit      | IP -192.168.1.50        |Hostname - server.testbox.com
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cat /etc/system-release ; hostname ; hostname -I ; dnf groupinstall "Development Tools" -y
sudo dnf update -y ; sudo dnf -y install curl wget

sudo dnf install lsof java-17-openjdk  java-17-openjdk-devel -y
java -version
sudo alternatives --config java
 java -version

sudo nano  /etc/profile
export JAVA_HOME="/usr/lib/jvm/java-17-openjdk"
export PATH=$JAVA_HOME/bin:$PATH

source /etc/profile ; echo $JAVA_HOME

wget  https://www.apache.org/dyn/closer.lua/solr/solr/9.2.0/solr-9.2.0.tgz?action=download -O solr-9.2.0.tgz
tar -zxvf solr-9.2.0.tgz
cd /root/solr-9.2.0/bin
sudo ./install_solr_service.sh ~/solr-9.2.0.tgz

sudo service solr start ; sudo service solr status
sudo firewall-cmd  --permanent --add-port=8983/tcp ; sudo firewall-cmd --reload
localhost:8983
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Ruby Hello World Example- How To Write and Execute Ruby Program on Ubuntu 20.04

 Ruby is an interpreted, high-level, general-purpose programming language which supports multiple programming paradigms.

apt update ; apt-get install ruby -y
whereis ruby
which ruby

nano helloworld.rb
#!/usr/bin/ruby

# Hello world ruby program

puts "Hello World!";

ruby helloworld.rb
( or )
chmod u+x helloworld.rb
./helloworld.rb

Executing Ruby one liner - ruby -e 'puts "Hello World!\n"'

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How To Install Uninstall or Remove Anydesk on Oracle Linux 9

in This Tutorial you will Learn " How To Install Uninstall or Remove Anydesk on Oracle Linux 9  "
Anydesk is a Lightweight, secure, and fast remote desktop application distributed by Anydesk Software GmbH. Anydesk allows the System admins to access remote devices anywhere and at any time.
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Server - Os:  Oracle Linux Server 9.0   64Bit      | IP -192.168.1.50        |Hostname - server.testbox.com
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cat /etc/system-release ; hostname ; hostname -I ; dnf groupinstall "Development Tools" -y

sudo tee /etc/yum.repos.d/anydesk.repo<<EOF
[anydesk]
name=AnyDesk CentOS - stable
baseurl=http://rpm.anydesk.com/centos/8/x86_64/
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://keys.anydesk.com/repos/RPM-GPG-KEY
EOF
sudo dnf update -y ; sudo dnf install anydesk -y


#2nd method using Binary
cd Downloads
ls
sudo dnf install ./anydesk-*.el8.x86_64.rpm


Uninstall or Remove AnyDesk – Oracle Linux
sudo dnf remove anydesk -y
sudo rm -r /etc/yum.repos.d/anydesk.repo
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How To Install Flask with Gunicorn and Nginx on Oracle Linux 9

 in This Tutorial you will Learn " How To Install Flask with Gunicorn and Nginx on Oracle Linux 9"
Flask is a web application framework written in Python.
Gunicorn is a WSGI server.
NGINX is open source software for web serving, reverse proxying, caching, load balancing, media streaming, and more.
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Server - Os:  Oracle Linux Server 9.0   64Bit      | IP -192.168.1.50        |Hostname - server.testbox.com
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cat /etc/system-release ; hostname ; hostname -I ; dnf groupinstall "Development Tools" -y
sudo dnf update ;  sudo dnf install epel-release -y
sudo dnf install python3-pip python3-devel gcc -y
dnf install nginx -y
nginx -version


dnf install --assumeyes python3-pip
pip3 install virtualenv
sudo update-crypto-policies --set LEGACY
sudo reboot
sudo mkdir /sample_project && cd /sample_project
sudo chmod 777 /sample_project
virtualenv projectenv
source projectenv/bin/activate

pip3 install gunicorn flask
pip install --upgrade pip
nano  /sample_project/helloworld.py
from flask import Flask
app = Flask(__name__)

@app.route('/')
def hello_world():
    return "<h1 style='color:red'>Hello, World!</h1>"

if __name__ == '__main__':
    app.run(host='0.0.0.0')


sudo firewall-cmd --add-port=5000/tcp --permanent ; sudo firewall-cmd --reload

python helloworld.py
http://127.0.0.1:5000


nano /sample_project/wsgi.py
from helloworld import app

if __name__ == "__main__":
    app.run()

firewall-cmd --add-port=8000/tcp --permanent ; firewall-cmd --reload
python helloworld.py
http://0.0.0.0:8000
deactivate
gunicorn --bind 0.0.0.0:8000 wsgi:app
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How to install KVM on Oracle Linux 9

 in This Tutorial you will Learn " How to install KVM on Oracle Linux 9 "
Kernel-based Virtual Machine (KVM) is an open source virtualization technology built into Linux®. Specifically, KVM lets you turn Linux into a hypervisor that allows a host machine to run multiple, isolated virtual environments called guests or virtual machines (VMs).
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Server - Os:  Oracle Linux Server 9   64Bit      | IP -192.168.1.50        |Hostname - server.testbox.com
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cat /etc/system-release ; dnf groupinstall "Development Tools" -y

lscpu | grep Virtualization
sudo dnf update ; sudo dnf install qemu-kvm qemu-img libvirt virt-manager virt-install virt-viewer libvirt-client
sudo systemctl start libvirtd ; sudo systemctl enable libvirtd ; sudo systemctl status libvirtd
sudo virt-manager
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