RHEL family tutorials

Step by Step guide tutorial on how to install and configure FreeIPA, ipa server LDAP, kerberos, DNS and IPA client on RHEL/CentOS 7 Linux with GUI and CLI

Step-by-Step Tutorial to configure cluster fencing, stonith device in RHEL and CentOS 8 Linux. Use fence_xvm to fence KVM HA Cluster nodes. Setup pacemaker fencing.

Step by Step instructions to install Oh My Zsh on different Linux distributions such as Ubuntu, Red Hat, CentOS, Debian, OpenSuSE, Arch Linux

As you know, CentOS Linux 8 became the end of life on 31 Dec 2021. It will now continue its life as CentOS Stream 8. Many people/organizations using CentOS

Step by step instructions to install ELK Stack on Rocky Linux. Install Elasticsearch, Logstash and Kibana

In this guide, we shall setup Grafana with Prometheus on Rocky Linux 8, we will use Grafana instance on the same server so that we can visualize metrics populated by the Prometheus service.

Step-by-Step Guide to create KVM Virtual Machine using Virtual Manager in RHEL and CentOS 8 Linux. Create VM, Take Snapshot, Assign Networks using Virtual manager GUI

Step by Step instructions to install mongodb on AlmaLinux 8. Access mongodb shell, create admin user, establish a connection with mongodb server using a different client. configure firewall and selinux

Step by step instructions to install rancher on Rocky Linux 9 with screenshots.

Step by Step instructions to install R Programming Language in Rocky Linux. Download and Install specific version of R language

Step by step Guide to install Oracle Virtual Box on RHEL / CentOS 7 Linux. To install Oracle Virtual Box you need EPEL repo. Oracle Virtual 5.2 is out now

Configure network bridge using nmcli for static and dhcp ip. nmcli connection reload. nmcli onboot. nmcli network manager centos 7. nmcli con add modify

Steps to enable SSH access in linux rescue mode and configure network in rescue mode in RHEL/CentOS 7/8 with example transfer sosreport file inst.sshd=1

Create local repository using yum and dnf in RHEL 7 and 8 Fix there are no enabled repos Perform yum install without subscription. Create Offline yum repo Linux

Perform Linux patch management in RHEL 6/7/8 Linux in LIVE production environment. Identify vulnerabilities list and security updates list then apply patch

Network scripts are deprecated in Red Hat Enterprise Linux 8 and they are no longer provided by default. In Red Hat Enterprise Linux 8, to run the ifup and the ifdown scripts, NetworkManager must be running. By default …

Step by Step instructions to install and generate certs using Let's Encrypt (certbot) on Rocky Linux 9. Generate and deploy certs for Nginx and Apache server.

A firewall is a must for every server system but there are times when for debugging purpose we would like to stop and disable the firewalld service. In this

Stratis Architecture, Steps to create stratis file system with thin provision, create stratis pool, mounting stratis file system on rhel 8 linux with examples

vncserver service failed because a configured resource limit was exceeded tigervnc on RHEL 7, remove temporary files from under /tmp and /tmp/.X11-unix/.

Steps to configure bridged network in virt-manager. Virtual Machine Manager provides a graphical tool for administering virtual machines for KVM, Xen etc

Learn to configure NIC teaming on CentOS/RHEL 7 Linux node. RHEL 7 implements network teaming with a small kernel driver and a user-space daemon, teamd.

Learn to set password to protect grub2 from booting a kernel without password. in rhel 7.To set password and protect grub2 remove unrestricted in menuentry

How to exit full screen mode in qemu virt-manager for kvm hosts or get out of fullscreen. This article is validated on RHEL / CentOS 7 Linux on vnc viewer.

Understand thearchitectecture of different kinds of cluster i.e. high performance, load balancing and high availability cluster in Red Hat Linux

Configure high availability cluster, create cluster resource and troubleshoot cluster resource for a cluster on Red Hat / CentOS 7 with examples.

Configure High Availability Cluster and configure cluster resource and add behind the cluster in CentOS and Red Hat 7 Linux using pcs resource create..

Increase decrease, change tmpfs partition size in Red Hat Linux 7, /run /run/user/$PID /dev/shm /sys/fc/cgroup using fstab RuntimeDirectorySize logind.conf

How to set default boot kernel in linux? Change the default boot entry for kernel ? Boot with old kernel version ? Revert to previous kernel version ?

How to install configure two node cluster in linux on centos rhel 7 using vmware virtualbox corosync-quorumtool two_node wait_for_all auto_tie_breaker