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How to Created Root Privilege User in RHEL Server

How to Remove Old Kernel from RHEL Server

How to check Disk IOPS using dd command in Linux

[root@testdbsvr01~]# dnf install -y https://download.postgresql.org/pub/repos/yum/reporpms/EL-8-x86_64/pgdg-redhat-repo-latest.noarch.rpm [root@testdbsvr01~]# dnf -qy module disable postgresql [root@testdbsvr01~]# dnf install -y postgresql12-server [root@testdbsvr01~]# dnf install -y postgresql12-contrib [root@testdbsvr01~]# /usr/pgsql-12/bin/postgresql-12-setup initdb Initializing database ... OK

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

List available Nginx Version [root@testsvr01 ~]# yum module list nginx

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