Tuesday 29 November 2022

How to Install Open VMware Tools on CentOS 7

VMware Tools are very important role plays when working with VMware Player, VMware Workstation Pro, VMware ESXi or vSphere. If VMware Tools are installed on a guest, it will report back the guest information to the VMware hypervisor like guest’s IP address, CPU usage, disk usage, memory usage etc. Installing VMware Tools on a Linux machine quit easy. In this article, RPM based installation performed on CentOS 7 and related packages are available in its defaults repository.

Tuesday 15 November 2022

How to Fix – ‘Error: Unable to find a match: iperf’ on CentOS 8

Mostly the above message through the system when its package or binary not available on CentOS 8 default repositories. Its binary not available in CentOS 8  BaseOS and AppSteam repositories but it can be installed from EPEL Repository. 

Monday 14 November 2022

How to Fix – ‘ifconfig Command Not Found’ on CentOS 8

The network command line tool ‘ifconfig’ is not available on CentOS 8 minimal installation. Ifconfig command is part of net-tools package and it can be installed from CentOS 8 default BaseOS repository on CentOS 8

Friday 11 November 2022

How to Maintain Specific Number of Kernel Packages on CentOS 8

Sometime due to less space on /boot partition need remove old kernel packages once new/updated kernel installed. The “installonly_limit” option in /etc/dnf/dnf.conf is used to maintain the number of kernel available. By default, the limit is set to 3 kernels in CentOS 8.

Wednesday 9 November 2022

How to Change Machine ID after Cloning a VM on CentOS 7

A Machine ID is a unique hexadecimal, 32-character, lowercase code of the local system that is set during installation and represents an individual machine ID over the network.

Thursday 3 November 2022

How to Install KSH (Korn Shell) Shell on CentOS 8

KSH (Korn Shell) is a shell programming language, which is upward compatible with 'sh' (Bourne Shell). KSH was developed by David Korn at Bell Labs in 1980s. KSH is quite popular and used by most of the Linux System Admins to automate daily tasks on Linux/Unix like operating systems. You can install ksh on CentOS 8 using its AppSteam repository.

How to Configure Local YUM repository on CentOS 8 using Installation ISO Image

YUM (YellowDog Updater Modified) is a package management tool for RPM based Linux system that helps to install, uninstall, and update packages local and other client machines over the network. YUM resolve all dependency and install the package with all dependencies. CentOS 8 has two repositories BaseOS and AppStream and they are different from each other. BaseOS repository provides packages which are useful for an operating system and AppStream provides software packages such as databases and dependencies.

Wednesday 2 November 2022

How to Install SNMP Tool on CentOS 7

Monitor Routers, Firewalls and Linux Servers agentless, with the support of SNMP (Simple Network Management Protocol) tool. It is an internet protocol that can retrieve the operational statistics from the devices remotely. Its binary available in CentOS 7.