About of Database Systems and Information Technologies
CentOS 8 New Features 1- The Cockpit (web Based Management Interface) is now available by default. 2- CentOS 8 comes with a new version of the YUM version which is based on DNF. This new version is compatible with YUM v3 (CentOS 7) 3- RPM v4.14 is distributed in CentOS 8. RPM now validates the…
Configure Windows Firewall to Allow Pings Open Windows Firewall. Right click Inbound Rules and New Rule. Select Predefined and select File and Printer Sharing (Echo Request – ICMPv4-In). Next and Finish. Your system can respond ping requests.
You can create virtual IP address with linux service. I designed the linux service to create a virtual IP address when operating system is rebooted. My System Properties Ethernet Adaptor Name : ens14025 Virtual IP : 192.168.44.55 1. Create Bash Script To Create Virtual IP Address [root@test ~]# vi /opt/scripts/virtual_ip_up.sh #!/bin/bash ifconfig ens14025:1 192.168.44.55 netmask…
If you want to delete files which are greater than given size on Linux, you can use below examples by changing as your need. Delete Files Delete files which are size more than 2 MB. and type is jgp. [root@testserver ~]# find /tmp/ -type f -size +2M -name “*.jpg” -exec rm -rf {} \; Delete…
I write a python code to check mysql service open or close. It is simple and you can change service_name parameter in the code to check another services. You can download from here check_service_status.py Below code maybe can not run because of python language format is tab structure. You can use with download original code…
You can use hostnamectl command to list and change hostname of operating system on OEL 7 or CentOS 7 version. List Hostname Status [root@localhost ~]# hostnamectl Static hostname: localhost.localdomain Icon name: computer-vm Chassis: vm Machine ID: 6f021291e2384a219e1f23ca39eadc9a Boot ID: ec195c69cfde417b88b86f4d7419cf24 Virtualization: vmware Operating System: Oracle Linux Server 7.3 CPE OS Name: cpe:/o:oracle:linux:7:3:server Kernel: Linux 4.1.12-61.1.28.el7uek.x86_64…
Changing hostname is different from RHEL 6 version in RHEL 7. You can use few method to change hostname. I will demonstrate useful and easy method that is hostnamectl command. Show Current Hostname [root@localhost ~]# hostname localhost.localdomain or [root@localhost ~]# hostnamectl status Static hostname: localhost.localdomain Icon name: computer-vm Chassis: vm Machine ID: 418f684e1a5c45c9a22f76065c732de3 Boot ID:…
What is firewalld Firewalld provides a dynamically managed firewall with support for network/firewall zones that define the trust level of network connections or interfaces. It has support for IPv4, IPv6 firewall settings, ethernet bridges and IP sets. There is a separation of runtime and permanent configuration options. It also provides an interface for services or…
Turkey is breaking step with Europe and keeping summer time through the winter. Instead of turning clocks back an hour as they do in the European Union in the autumn, Turkey will keep the clocks as they are and effectively change the country’s time zone. You have to implement new tzdata-2016g package on your systems…
EPEL (Extra Packages for Enterprise Linux) is open source and free community based repository project from Fedora team which provides 100% high quality add-on software packages for Linux distribution including RHEL (Red Hat Enterprise Linux), CentOS, and Scientific Linux. Epel project is not a part of RHEL/CentOS but it is designed for major Linux distributions…