CentOS tutorials

How to fix starting package installation process error populating transaction, anaconda is retrying faced during RHEL/CentOS 7/8 installation in Linux

Step-by-Step Tutorial to configure KVM HA Cluster using Pacemaker GUI (WEB UI) and CLI tool in RHEL and CentOS 8 Linux. Configure Virtual Floating IP, verify failover

How to configure vlan with bond using kickstart in RHEL/CentOS 7. You can configure using network --vlan or using %post section of kickstart with examples.

Use kickstart %pre script examples to perform tasks before installing the system. Use --interpreter, --log, chroot and nochroot options with %pre script RHEL/CentOS 7/8

Use kickstart post install scripts to perform tasks after installation, save logs, use interpreter with and without nochroot in RHEL and CentOS 7/8 Linux with examples

Step by step instructions to install and configure IPv6 UEFI PXE Boot using kickstart configuration file. Automate the installation over IPv6 network using dhcp6, tftp and http server

Step by step instructions to install and configure uefi pxe boot with kickstart on RHEL/CentOS 8 Linux. Configure DHCP for UEFI BIOS and automated installation

Get an overview of tuned profile tuned-adm and steps to create custom tuned profile in Red Hat or CentOS 7. List tuned profiles configure own tuned profile

Step-by-Step Tutorial to create KVM Virtual Machine using Cockpit Web Console on RHEL/CentOS 8 Linux. virtual machine creation and management with Cockpit

Steps to create stratis snapshot, restore stratis file system, remove or destroy snapshot, pools, stratis file systems using examples in RHEL 8 Linux

Steps to encrypt root partition and entire filesystem using LUKS in Linux. Encrypt volume group and physical volume with cryptsetup CentOS/RHEL 7/8 Migrate Data

Step by step guide to build ceph storage cluster in Openstack CentOS 7 Linux on virtual machine. Confiure OSD, mon using ceph-deploy tool for ceph cluster

Configure Google Authenticator with Offline two factor authentication to secure ssh, sudo and su using PAM module pam_google_authenticator.so in RHEL/CentOS 7/8

Install and configure openvpn server and openvpn client with easy-rsa 3 in centos or rhel 7 linux. Create CA, CSR certificates for openvpn server client model.

How to move directory to another partition move opt to new partition. move home to another partition. move var to new partition in RHEL/CentOS 7/8 Linux.

Configure xfs quota for user, group, projects (disk). Check and Modify XFS quota grace period. Enable and Disable XFS Quota in RHEL/CentOS 7/8 with examples

Step-by-Step Guide to setup Linux High Availability Cluster in CentOS 8 using system_id_source uname. Configure pacemaker, corosync and linux HA cluster.

Steps to configure software raid 1 mirroring in linux with and without spare disk with examples in RHEL, CentOS and other Linux distros using mdadm.

Mount filesystem in certain order during reboot one after the other using systemd unit file or /etc/fstab using RequiresMountsFor x-systemd.requires- mounts-for

In this article I will share most used Kickstart commands to automate installation in sample RHEL/CentOS 8 Kickstart example file and link to kickstart generator

This guide covers how to install Rocky Linux 8.4 on VirtualBox. Rocky Linux is the replacement of the much-loved CentOS whose support will end on December 31, 2021

Steps to create custom RHEL ISO using Cockpit Image Builder Web Console and CLI in RHEL 8 Linux. Create Live ISO, QCOW2, Amazon Machine Image, Azure Disk Img

Step by Step guide to configure high availability cluster in CentOS or Red Hat 7 using pacemaker and corosync, 3 node HA Cluster on Virtual Box or KVMs..

Steps to update kernel properly in production environment with examples. Precautions to be considered before and after you update kernel in RHEL/CentOS 7 and 8

The adcli will be using System Security Services Daemon (SSSD) to connect a CentOS/RHEL 7/8 system to Microsoft Active Directory Windows Domain

The command to restart network in RHEL or CentOS 6,7 and 8 would vary depending upon your network configuration. If you are using NetworkManager then you can simply restart NM service

KVM Tutorial. Steps to install KVM (Kernel Based Virtual Machine) in RHEL/CentOS 8 Linux. Learn about KVM Hypervisor and KVM virtualization.

PXE boot server configuration in linux step by step, kickstart linux tutorial, configure kickstart server, network based installation in linux using kickstart

Steps to extract, modify, update and rebuild initrd image in CentOS RHEL 7 and 8 ISO DVD with examples using XZ / LZMA format Update initrd with modules drivers

Configure secure logging to remote log server with rsyslog TLS certificates in CentOS/RHEL 7 Forward syslog to remote log server securely using TLS certificates