Linux

• Check Available Disk

[root@testsvr01~]# lsblk
NAME          MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda             8:0    0   60G  0 disk
├─sda1          8:1    0    1G  0 part /boot
└─sda2          8:2    0   59G  0 part
  ├─rhel-root 253:0    0 35.6G  0 lvm  /
  ├─rhel-swap 253:1    0    6G  0 lvm  [SWAP]
  └─rhel-home 253:2    0 17.4G  0 lvm  /home
sdb             8:16   0  250G  0 disk
sdc             8:32   0  250G  0 disk

• List available Nginx Version

[root@testsvr01 ~]# yum module list nginx

• Create New flaskapp.service File Under /etc/systemd/system/ Directory

[root@pythonsvr01 ~]# vi /etc/systemd/system/flaskapp.service
[Unit]
Description=Flask Python Application Container
After=network.target

[Service]
Type=idle

Environment=CONFIGURATION_SETUP=config.ProductionConfig
Environment=FLASK_ENV=production

ExecStart=/bin/bash -c '/usr/bin/python3.6 /opt/flaskapp/app.py'
ExecStop=/bin/kill -15 $MAINPID

This step should have been completed upon the installation of Drupal 8 for getting PHPMailer function

Install Composer

# curl -sS https://getcomposer.org/installer | php

Move Composer binary to usr bin path

# mv composer.phar /usr/bin/composer

Check Composer Version

# composer --version

Go to Drupal root Directory and execute

Drupal Installation Directory - /var/www/html

• List available PHP Version

[root@testsvr01 ~]# yum module list php

• Install Remi Repository

[root@testsvr01 ~]# yum install http://rpms.remirepo.net/enterprise/remi-release-7.rpm

[root@testsvr01 ~]# yum -y install yum-utils

• Enable PHP 8.1 Repo

root@testsvr01 ~]# yum-config-manager --enable remi-php81

• Install PHP 

[root@testsvr01 ~]# yum install php -y

• Check Current PHP Version

[root@testsvr01 ~]# php -v
PHP 7.4.33 (cli) (built: Oct 31 2022 10:36:05) ( NTS )
Copyright (c) The PHP Group
Zend Engine v3.4.0, Copyright (c) Zend Technologies
    with Zend OPcache v7.4.33, Copyright (c), by Zend Technologies

• Install yum utils 

[root@testsvr01 yum.repos.d]# yum -y install yum-utils

[root@testsvr01 ~]# yum install banner -y

[root@testsvr01 ~]# banner learnstowin

• Check Disk IOPS using dd command in Linux

[root@testsvr01~]# dd if=/dev/zero of=/tmp/temp.img bs=2G count=1 oflag=dsync status=progress
2147479552 bytes (2.1 GB) copied, 3.478083 s, 617 MB/s
0+1 records in
0+1 records out
2147479552 bytes (2.1 GB) copied, 3.4785 s, 617 MB/s
[root@testsvr01~]#

• Create Sudo / Root Privilege  User

[root@testsvr01 ~]# useradd sysadmin -G wheel

• Add Sudo Permission in the existing  User

[root@testsvr01 ~]# usermod -aG wheel sysadmin