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How to Set up a Kubernetes Cluster with Rancher

Rancher is an OpenSource product simplify the management of Kubernetes cluster. Rancher is just a web User Interface to manage the Kubernetes cluster.

How to Create a Thinly Provisioned Logical Volume on CentOS/RHEL

Thinly Provisioned Logical volume is one of the advanced feature available in Logical volume Management, We can provision storage more than what we have.

Migrating Logical Volume in Logical Volume Management

Migrating Logical Volume by moving the extents from a PV to another PV when a faulty disk or the size of the disk need to be larger than the current one.

Striped Logical Volume in Logical volume management (LVM)

How to create Striped Logical Volumes in Logical Volume Management to get good I/O performance by balancing the data written to disks.

Shrink a Volume Group in Logical Volume Management (LVM)

Shrink a Volume Group in logical volume management will be performed by sysadmins when the requirement in place to reduce the no of disks from a VG.

Extend and Reduce LVM Logical Volume Management in Linux

How to extend and reduce LVM logical volume management in Linux Operating Systems.

Setup an iSCSI Target Server and Initiator on RHEL 7.x / RHEL 8

iSCSI is a block level storage solution shares the RAW disks over the network. iSCSI target will act as server and iSCSI initiator will act as client.


How to Migrate Existing Iptables to Nftables in RHEL8/CentOS

Iptables can be migrated to nftables without spending time on writing it. Red Hat 8 based operating system provides translate tool to migrate the rules.

How to start using SELinux or Security Enhanced Linux

(adsbygoogle = window.adsbygoogle || ).push({}); SELinux, Most of the new Linux users will disable...

Generate a CSR Certificate Signing Request in Linux

(adsbygoogle = window.adsbygoogle || ).push({}); Introduction Generating a Certificate Signing Request...


Step by step Oracle Linux 8 Installation guide with screenshots

Step by step guide to install Oracle Linux 8 with the screenshot will explain how to perform a clean installation from scratch on Virtual or Physical servers.




Install FOG imaging solution for Linux/Windows and Mac

Fog or "Free Open-Source Ghost" is an open source piece of cake used for imaging solution licensed under GPL.

How to install and register Linux clients with Spacewalk server 2.8

In earlier guides, the server-side setup has been completed. Currently, its time to set up with our client-side installation and configuration. Initially, we need...

How to create Software channels, Repositories, Activation keys and sync in Spacewalk Server 2.8

In our previous article, we have covered with installing and configuring the spacewalk server, by following in this guide we are about to walk...

How to install Spacewalk Linux systems management on RHEL and CentOS Linux 7

A spacewalk is an Open Source Linux System Management solution provided by RedHat under GPLv2 Licence with major features like Inventory and Provisioning.


Ansible tasks for Sysadmins with examples

Ansible tasks are a set of actions, the number of tasks can be combined to form a playbook required for sysadmins in their daily routine operations.

Splunk forwarder installation using Ansible

(adsbygoogle = window.adsbygoogle || ).push({}); Splunk forwarder installation can be accomplished using Ansible. In...

Creating a Logical volume based file system using Ansible

(adsbygoogle = window.adsbygoogle || ).push({}); In our last guide, we have seen how to...

RunDeck IT automation tool step by step installation guide

RunDeck is an Open source server application to automate our daily IT tasks by replacing tools like Ansible, puppet, chef.

Ansible Playbooks – Managing Groups and User creation using Ansible

Step by step creating with a user adding ansible playbook, Automating user account creation in Linux using Ansible playbooks made easy with Ansible.


Linux Interview questions and answers for Level 1 role. Those who are looking to be an entry-level Linux admin and preparing for an interview look into it.
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You account are not allowed to access to crontab because of pam configuration.

(adsbygoogle = window.adsbygoogle || ).push({}); In today guide a simple solution for above topic...

The solution for “touch: cannot touch `test.txt’: No space left on device”

In this guide, we are about to provide a simple solution for the titled issue "No space left on device". In case we receive "No...

The solution for setfacl: “Operation not supported” in Linux Servers

We may come across this issue in a production environment while creating with the new file system. This can be resolved without...

How to clear Oracle x86 servers ILOM faulty message

Let us see how to clear the ILOM faulty messages. start the SP console using the command. # start SP/faultmgmt/shell List out all faulty messages. # fmadm faulty Repair the faulty...


Install and configure Apache Tomcat 8.5 on Red Hat7 & CentOS7

Apache Tomcat is an open source technology, which licenced under Apache License version 2. Basically to understand what the use of Tomcat its a...

How to configure logging in Apache Web server

In this guide let us see how to log any required particular logs in Apache web server. To read about Apache related topic click on...

Understanding Apache Web Server logs

(adsbygoogle = window.adsbygoogle || ).push({}); In our earlier topic, we have seen how to...

How to install Apache Web Server in Red Hat Enterprise Linux 7 and Variants

In this guide let us see how to install Apache Web Server in RHEL 7, Centos 7, Oracle Linux 7. By following we are going...


Change systemd Linux servers network interface name ensxx to eth0

(adsbygoogle = window.adsbygoogle || ).push({}); In Systemd Linux server like Red Hat Enterprise Linux 7.x, CentOS 7.x, Oracle Linux server...

Creating a HA Docker Swarm over AWS

Introduction: Hello everyone!!! Docker Swarm over AWS In this post, we will...

How to create a host’s Inventory using Ansible

(adsbygoogle = window.adsbygoogle || ).push({}); In this guide, we can see how to create...
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resolvconf: Error: /etc/resolv.conf isn’t a symlink, not doing anything

If we get this error in Ubuntu while restarting network service. Here /etc/resolv.conf is a file move it to /run/resolvconf/resolv.conf.   # sudo mv /etc/resolv.conf /run/resolvconf/resolv.conf Then create...

Chroot Ubuntu or recovering from multi boot issue (windows Installation)

To recover from a windows installation first we need to boot from LiveCD of ubuntu if you installed with system 32-bit use 32bit Live...

Apache virtual host entry to forward non-SSL to SSL for Rails application

In the rails application, if we need to forward all non-SSL traffic to SSL traffic we can use below virtual host entry. By default, rewrite...

Enable setup command in minimal installed Redhat or Centos 6 Linux

In minimum install setup, the command will not be enabled because it installed with limited packages. When we try to run "setup" command if...

Mounting Samba shares persistently during reboot

To mount a samba share during each reboot we need to interact manually. This can be automated by putting the samba share entry in...

Install and configure VNC server in CentOS 6, Red Hat 6 & Oracle Linux

Tiger VNC server will allow users to access remote servers Desktop environment. A number of concurrent users can access the server remotely using VNC server

Copy user files from Ubuntu or Debian servers to Amazon S3 bucket

If we have several Virtual private servers (VPS) and we need to back up the user data's and database's to Amazon S3...

Setting up SFTP with chroot

Instead of installing with VSFTPD package to configure the FTP service we can use the default SSH service and port 22 for secure file...

Install vsftpd with SSL/TLS in Ubuntu Server

VSFTPD with encryption will protect us from unauthorized access to our data, By using SSL certificate all plain text communication will be encrypted.

Filesystem backup using backup gem

Backup Gem is a simple backup solution for file-system backup in the small production environment to backup our Ruby environment.


How to Set up a Kubernetes Cluster with Rancher

Rancher is an OpenSource product simplify the management of Kubernetes cluster. Rancher is just a web User Interface to manage the Kubernetes cluster.

How to Install and configure Kubernetes (k8s) on Ubuntu 18.04 LTS

Kubernetes or k8s is trending Open Source container orchestration solution provides feature such as application deployment by automating, scaling etc.

How to Install and Configure Apt Cache Server On Ubuntu 18.04 LTS

Apt Cache Server available for Debian based Operating Systems and it helps to cache the packages installed with apt and saves a lot of bandwidth.

How to Create a Thinly Provisioned Logical Volume on CentOS/RHEL

Thinly Provisioned Logical volume is one of the advanced feature available in Logical volume Management, We can provision storage more than what we have.
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