DON'T MISS
How to Backup and Restore XFS filesystem in RHEL 8
To backup and restore an XFS filesystem it's possible by installing xfsdump package which provides xfsdump and xfsrestore commands.
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How to Create a Thinly Provisioned Logical Volume on CentOS/RHEL/7/8
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 Volumes 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 (LVM2)
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.
How to Extend and Reduce LVM Logical Volume in Linux
How to extend and reduce LVM logical volume management in Linux Operating Systems.
How to Setup iSCSI Target and Initiator on RHEL 7.x / RHEL 8
iSCSI Storage is a block-level storage solution shares the RAW disks over the network. iSCSI target will act as a server and iSCSI initiator will act as the client.
LINUX SECURITY
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
SELinux is one of security layer in Linux which protect the directory, files, process and ports with its own labels by preventing unauthorised access.
Generate a CSR Certificate Signing Request in Linux
Generating a Certificate Signing Request (CSR) for Secure Sockets Layer (SSL) Certificate required when we need to sign with a Certificate Authority (CA).
LINUX OPERATING SYSTEMS
Step by Step Installing CentOS Linux 8 with Screenshots
CentOS Linux 8 is completely free to use and licensed under GNU GPL, It provides all features available in RHEL 8 and support available from the community.
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 25 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...
Create a Logical volume 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 Playbook to create Users and Groups in Linux
Step by step creating with a user adding ansible playbook, Automating user account creation in Linux using Ansible playbooks made easy with Ansible.
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
How to fix Grub Rescue in CentOS and RHEL 7
A fix for boot issue (Grub rescue) will be carried out by sysadmins by following few steps. A brief guide on how to recover GRUB and UEFI based servers.
Your 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...
1 stop solution for setfacl “Operation not supported” in Linux
Introduction Setfacl error: We may come across this issue in a production environment while creating with the new file...
WEB SERVERS
Install and configure Apache Tomcat 8.5 on RHEL & CentOS7
Ahmad Wamiq - 0
Apache Tomcat is an open-source technology, which licensed under Apache License version 2. Basically to understand what the use of Tomcat it's a simple HTTP server used for Java Servlet, JavaServer Pages, Java Expression Language.
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...
Setup Apache Web Server on RHEL and CentOS7
(adsbygoogle = window.adsbygoogle || ).push({}); Introduction to Apache Web Server In...
RANDOM
Automation
Install Ansible using Python installation manager pip
(adsbygoogle = window.adsbygoogle || ).push({}); What is pip?pip can be called as preferred installer...
Linux Clusters
Create a Pacemaker Cluster Resources and Resources group
Pacemaker Resources and groups are which need to be highly available across multiple nodes in a cluster to provide high-availability for any services.
Linux Variant's
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.
LATEST ARTICLES
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.
Shrink a Volume Group in Logical Volume Management (LVM2)
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.
How to Extend and Reduce LVM Logical Volume in Linux
How to extend and reduce LVM logical volume management in Linux Operating Systems.
Ansible tasks for Sysadmins with 25 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.
Forcing the from address when Postfix relays over SMTP
Forcing the from address when Postfix relays over SMTP
Setup a Linux server as IDM client to authenticate with Active Directory
Setup a Red Hat Enterprise Linux or CentOS Linux server as IDM Client to Authenticate with Active Directory using cross-forest trust.
Integrating IDM with AD (Active directory) using indirect cross-forest trust
IDM with Active Directory using Indirect cross-forest trust will help to integrate both and act as an intermediator by providing a lot of features than AD.
Docker Cheat Sheet for Sysadmins
Docker cheat sheet for sysadmins and developers will help to have a quick peek in the case for any future reference. This contains most of all docker options.
How to Connect to Amazon EC2 Remotely Using SSH
Most of the new Amazon web service (AWS) users will be stuck with permission issue while launching an EC2 instance in AWS. This will help to fix it.
MOST POPULAR
How to Backup and Restore XFS filesystem in RHEL 8
To backup and restore an XFS filesystem it's possible by installing xfsdump package which provides xfsdump and xfsrestore commands.
Create Windows Server Image for OpenStack
Create a Cloud image for OpenStack environment for windows server in QCOW2 format. This solves the purposes of running windows instance in a cloud environment.
Offline installation of cx_oracle for Python 3.x
Offline installation guide of cx_oracle for Python 2.7 and 3.x. To fulfil the requirement to connect databases which are of 11g,12c,18c and 19c.
How to fix Grub Rescue in CentOS and RHEL 7
A fix for boot issue (Grub rescue) will be carried out by sysadmins by following few steps. A brief guide on how to recover GRUB and UEFI based servers.
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