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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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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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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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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Docker is a container engine that uses the Linux Kernel to create the containers on top of an operating system. Which is used to create, deploy and run the applications.
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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 config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo
sudo dnf update
sudo dnf install -y docker-ce docker-ce-cli containerd.io
docker --version
sudo systemctl enable docker ; sudo systemctl start docker ; sudo systemctl status docker
sudo usermod -aG docker yourname
id testbox
docker run hello-world
docker pull ubuntu
docker images
docker run -it ubuntu
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in This Tutorial you will Learn " How To Configure Storage Server with iSCSI On Oracle Linux 9
Configure Storage Server with iSCSI.
Storage server with iSCSI on network is called iSCSI Target, Client Host that connects to iSCSI Target is called iSCSI Initiator.
+----------------------+ | +----------------------+
| [ iSCSI Target ] |192.168.1.50 | 192.168.1.40| [ iSCSI Initiator ] |
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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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Configure iSCSI Target (Targetcli) -
cat /etc/system-release ; hostname ; hostname -I ; dnf groupinstall "Development Tools" -y
dnf -y install targetcli
mkdir /var/lib/iscsi_disks
targetcli
cd backstores/fileio
create disk01 /var/lib/iscsi_disks/disk01.img 10G
cd /iscsi
create iqn.2023-03.server.testbox:dlp.target01
cd iqn.2023-03.server.testbox:dlp.target01/tpg1/luns
create /backstores/fileio/disk01
cd ../acls
create iqn.2023-03.server.testbox:node01.initiator01
cd iqn.2023-03.server.testbox:node01.initiator01
set auth userid=username
set auth password=password
exit
ss -napt | grep 3260
systemctl enable target
firewall-cmd --add-service=iscsi-target ; firewall-cmd --runtime-to-permanent
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Configure iSCSI Initiator -
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cat /etc/system-release ; hostname ; hostname -I ; dnf groupinstall "Development Tools" -y
dnf -y install iscsi-initiator-utils
nano /etc/iscsi/initiatorname.iscsi
InitiatorName=iqn.2023-03.server.testbox:node01.initiator01
nano /etc/iscsi/iscsid.conf
node.session.auth.authmethod = CHAP
node.session.auth.username = username
node.session.auth.password = password
iscsiadm -m discovery -t sendtargets -p 192.168.1.50
iscsiadm -m node -o show
systemctl restart iscsid
iscsiadm -m node --login
iscsiadm -m session -o show
cat /proc/partitions
parted --script /dev/sdc "mklabel gpt"
parted --script /dev/sdc "mkpart primary 0% 100%"
mkfs.xfs -i size=1024 -s size=4096 /dev/sdc1
mount /dev/sdc1 /mnt
df -hT
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in This Tutorial you will Learn" How To Create SSL Certificate (Self Signed) On Oracle Linux 9"
SSL stands for Secure Sockets Layer, a global standard security technology that enables encrypted communication between a web browser and a web server.
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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
cd /etc/pki/tls/certs
openssl genrsa -aes128 2048 > server.key
openssl rsa -in server.key -out server.key
openssl req -utf8 -new -key server.key -out server.csr
openssl x509 -in server.csr -out server.crt -req -signkey server.key -days 3650
chmod 600 server.key
ll server.*
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