Deepak Prasad

Install multi node OpenStack on VirtualBox using Packstack using CentOS 7 VM on Windows 10 laptop. Generate and configure packstack answer file for Openstack

Step by step guide linux lvm snapshot backup and restore with examples RHEL/CentOS 7/8. Create, merge, extend, remove LVM snapshot. backup root file system

Multiple one liners SFTP commands example to copy file from remote server to local machine windows and vice versa. sftp get command examples, usage syntax

Rsync and SCP recursive examples to copy directory and contents. scp from local to remote server and scp from remote to local. copy file from ssh to local or local to ssh server

How to setup tigervnc server on CentOS 8, Different limitations with the newly released tigervnc server package, How to connect to vnc server using vncviewer from another Linux server

Step by step tutorial to install ansible on RHEL 8 or CentOS 8 Linux. Configure ansible.cfg, create static inventory and run ad-hoc commands yum install ansible

Create man page using man page template with groff. Various man page examples to create table, bullet points etc. Create user specific man page in Linux.

Dnsmasq is a lightweight, easy to configure DNS forwarder, designed to provide DNS (and optionally DHCP and TFTP) services to a small-scale network. It can serve the names of local machines which are not in the global …

Configure SSH Port forwarding tunneling between local and remote host in Linux. Example SSH session to forward port 8080 with ssh connection RHEL/CentOS

Steps to create anaconda updates.img also called as product,img with inst,updates in RHEl 7 and 8 during ISO or PXE installation Extract and rebuild updates.img

Step by Step instructions to install and configure apache from source code in Rocky Linux 8

Step by step instructions to install OWASP juice shop on kali linux using Node.js

Detailed step by step guide to rollback yum and dnf transactions on Linux server using yum history command. You can undo, redo or completely rollback the system to previous state

Configure IPv6 address using Network Manager (nmtui), CLI, Modify existing IPv6 address using nmci on Linux (RHEL / CentOS 7), Best practices for IPv6 usage

Real time sync directories, delete files, exclude files from directory sync using lsyncd with rsync and rsyncssh in RHEL/CentOS 7/8 Linux with examples.

Step by Step instructions to capture SSH and SSHD strace logs with DEBUG and VERBOSE. Add timestamps to SSH and SSHD debug and strace logs

Execute SSH and add timestamp to SSH verbose logs. Store the verbose logs into a log file and add timestamp prefix to each entry of log file with while loop

[Solved} Steps to debug and fix postponed publickey error leading to SSH connection failure. You may also get ROOT LOGIN REFUSED, Failed pubkey, permission issues with SSH

beginners guide to learn and use ssh config file with example to define different SSH client arguments, There are different configuration files which can be used to define..

In this tutorial, we'll explain how you can update the values of configmaps and secrets in Kubernetes without restarting the pods.

Examples to open port in linux RHEL/CentOS 7/8 Use netstat to check port status. centos open firewall port. how to open and close ports. check if port is open

Step by step instructions to mount and unmount NFS share in Linux with examples. How to fix umount.nfs4:: device is busy

Detailed guide with list of best practices to disable Ipv6 in Linux. You can use grubby, grub2-editenv, sysctl to disable your ipv6 across Linux server

In this tutorial I will share the step by step instructions to run SSHD as non- root user in Linux platform. The same steps can be used for non privileged docker container pods and kubernetes

How to check if IPv6 is enabled or disabled in my Linux server. Check for any process listening on IPv6 socket using netstat, lsof or ss command

The security context can be used to enhance Kubernetes security for the cluster node by applying different policies for the pods and containers.

Kubernetes performs three layer of health checks using probes. You can use readiness, liveness or startup probes with tcpget, exec and httpget methods.

Customize cloud-init autoinstall user-data configuration file. Configure network, assign static IPv4, IPv6 IP address, configure SSH, create bind, change password and many more

Step by step screenshots to create LVM during installation using Red Hat or CentOS 7/8 ISO. how to create lvm in redhat linux 7 step by step

LVM stands for Logical Volume Manager which is made up of Physical Volume, Volume Group ad Logical Volume. It can be easily extended or even reduced at times