linuxkathirvel

MAC Address Generator - Sequential

for x in {252..255};do for y in {0..255};do for z in {0..255};do printf "52:54:00:%X:%X:%X\n" $x $y $z;done;done;done >> MAC.list

linuxkathirvel

Network script for RHEL 7.4/ Oracle Enterprise Linux 7.4

Edit '/etc/sysconfig/network-scripts/ifcfg-eth0'

These three lines are important

DEVICE=eth0
BOOTPROTO=dhcp
ONBOOT=yes

Below is sample

linuxkathirvel

How to install Oracle Enterprise Linux 7.4?

Oracle's downloading script downloads many ISOs around 14.1GB totally. I tried 'Oracle Linux Release 7 Update 4 Boot ISO image for x86 (64 bit) (461.0MB)' and 'Oracle Linux Release 7 Update 4 source DVD 1(3.4GB)' ISOs. The first one was given 'Error setting up base repository' and second one is not booting. So, download the below image and use it to install.

Download below ISO image from the Oracle site

V921569-01.iso(4.6GB)
Oracle Linux Release 7 Update 4 for x86 (64 bit)
SHA-1: A855783F4CD8BDD17B785591A21746EDA7ABF476
SHA-256: F2E11A2FCEBA8E285490C8DF7C2172336CC23EB4BAB95924B98D1029DCE7EB0B

linuxkathirvel

How do I get user IP address in django?

def get_client_ip(request):
    x_forwarded_for = request.META.get('HTTP_X_FORWARDED_FOR')
    if x_forwarded_for:
        ip = x_forwarded_for.split(',')[0]
    else:
        ip = request.META.get('REMOTE_ADDR')
    return ip

linuxkathirvel

How can I change the screen position of krunner in KDE Plasma 5.x?

https://superuser.com/questions/906983/how-can-i-change-the-screen-position-of-krunner-in-kde-plasma-5-x

linuxkathirvel

How to make CGroupsV1 as default in Fedora 31?

CGroupsV2 as default in Fedora 31 Server. We change it and can assign CGroupV1 as default using the below line in kernel command line.

systemd.unified_cgroup_hierarchy=0

Steps

sudo vim /etc/default/grub
# Add 'systemd.unified_cgroup_hierarchy=0' in kernel command line. It will look like below

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Serialize Django ORM objects in JSON format

Use natural_key() function in models.py

use_natural_foreign_keys=True in serializer object as below

models.py

class Book(models.Model):
    name = models.CharField()
    price = models.FloatField()
 

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Kill Gunicorn worker process

ps aux | grep gunicorn | awk '{print $2;}' | xargs kill -9 2>/dev/null

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Django+Gunicorn daemon in Fedora 31 Service

Create /etc/systemd/system/gunicorn-django-app.service file with below content

[Unit]
Description=gunicorn daemon
After=network.target

[Service]
User=username
Group=groupname

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How to Deploy Django application in Fedora 31 with NGINX and Gunicorn?

Disable SELinux in Fedora

sudo setenforce 0
# To disable permenently
Change SELINUX value to 'disabled' in '/etc/sysconfig/selinux' file

Install Gunicorn

source venv/bin/activate