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.

Creating Software RAID and Volumes on Openfiler Storage

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LINUX SECURITY

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...

How to Safely remove a Luks encrypted disk from RedHat 6, 7 Linux and variants

In this guide, we are about to see how to safely remove a Luks encrypted disk from RedHat Enterprise Linux 6, 7 and variant...

LINUX OPERATING SYSTEMS

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SYSTEM MANAGEMENT

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.

LINUX AUTOMATION

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.
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LINUX INTERVIEWS

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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TROUBLESHOOTING

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...

WEB SERVERS

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...

RANDOM

Install Proftpd with TLS/SSL

PROFTPD use plain transfer mode. By implementing with TLS/SSL which help to secure our Proftpd with TLS/SSL by eliminating plain text transfer.

How to search for docker images and launch a container

In our last guide setting up docker on RHEL server have been covered. Let's now start to use docker by searching for existing images...

How to connect Docker containers and expose the network

This is our third article in this series. Today's guide is about how to access Docker containers after creating it, And how to expose...
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How to Configure a Network Interface on CentOS7 and RHEL7/8

Step by step guide to configure a network interface on Linux Operating Systems using command line tool nmcli. This guide applied for RHEL, CentOS & Oracle.

Rsync (Remote Sync) | 20 Rsync command with Examples in Linux

Rsync or Remote sync in Linux help to securely copy the files from any remote servers to a local server, It can be used as a poor mans Linux backup tool.

Migrating multi-writer VMware VM’s from Island cluster to vSAN cluster

Migrating Multi-writer disks of VMware VM's from Island Cluster to vSAN cluster with and without the downtime of Production.

How to Create a Resource and Resources group in the Pacemaker Cluster

Pacemaker Resources and groups are which need to be highly available across multiple nodes in a cluster to provide high-availability for any services.

How to add additional nodes to the Pacemaker Cluster

How to add additional nodes to the existing pacemaker Linux clusters. By adding nodes we can increase the resources of a cluster.

How to Manage Pacemaker Linux cluster from Web GUI

How to manage a Pacemaker Linux Cluster from web graphical interface (Pacemaker Web UI) by creating a new cluster or by adding an existing cluster.

Install and configure High Availability Linux Cluster with Pacemaker on CentOS 7.6

The Pacemaker is a high-availability cluster resource manager it will run on all the hosts which we suppose to use in the cluster to make sure our services up and running to reduce the downtime.

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.

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.

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How to Configure a Network Interface on CentOS7 and RHEL7/8

Step by step guide to configure a network interface on Linux Operating Systems using command line tool nmcli. This guide applied for RHEL, CentOS & Oracle.

Rsync (Remote Sync) | 20 Rsync command with Examples in Linux

Rsync or Remote sync in Linux help to securely copy the files from any remote servers to a local server, It can be used as a poor mans Linux backup tool.

Migrating multi-writer VMware VM’s from Island cluster to vSAN cluster

Migrating Multi-writer disks of VMware VM's from Island Cluster to vSAN cluster with and without the downtime of Production.

How to Create a Resource and Resources group in the Pacemaker Cluster

Pacemaker Resources and groups are which need to be highly available across multiple nodes in a cluster to provide high-availability for any services.
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