DON'T MISS
Recover from Starting Switch Root or corrupted Glibc
While starting the server it will not move forward after "Starting Switch Root". Step by Step let's see how to fix this issue.
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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
Install Wazuh Open Source Security Analytics
Install production-ready Wazuh OpenSource security analytics tool to monitor your critical production environment.
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.
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
Register a Linux client with Foreman
How to subscribe a client with our content management server foreman/Katello/Satellite.
Install Foreman Katello Patch Management on CentOS 7
Foreman with katello patch management is a Content Management System provides a lot of features such as provisioning, Inventory, Patch management and much more.
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...
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
Recover from Starting Switch Root or corrupted Glibc
While starting the server it will not move forward after "Starting Switch Root". Step by Step let's see how to fix this issue.
Recover from chmod 777 permission on a root filesystem
How to Recover from accidentally running chmod -R 777 / on any RPM-based Linux Operating systems.
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...
WEB SERVERS
Install and configure Apache Tomcat 8.5 on RHEL & CentOS7
Ahmad Wamiq - 2
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
Linux Administration
Create and mount filesystems in Linux
In this guide lets see how to create a different filesystem and mount it in Linux, the following steps can be followed in almost...
Linux Clusters
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.
Database Servers
Creating ASM disks using SAN disks through multipath in Oracle DB Servers
Creating ASM disks using SAN disks through multi-path by assigning an alias name to SAN disks to set up the Oracle database server.
LATEST ARTICLES
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.
How to build an RPM package from Source
PRM Package, Packing an RPM may require while we need to build something from source.
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.
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/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.
How to create a Linux Network Bridge on CentOS/RHEL7
Linux Network Bridge is a device that separates two or more network segments within one logical network and behaves like an L2 Switch but really it's not.
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 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.
MOST POPULAR
Recover from Starting Switch Root or corrupted Glibc
While starting the server it will not move forward after "Starting Switch Root". Step by Step let's see how to fix this issue.
Recover from chmod 777 permission on a root filesystem
How to Recover from accidentally running chmod -R 777 / on any RPM-based Linux Operating systems.
Linux Sudo to run Privileged Commands
Allow normal users to run any privileged commands by escalating to Sudo, by configuring Linux Sudo on any Linux os normal users are allowed to get root access.
Register a Linux client with Foreman
How to subscribe a client with our content management server foreman/Katello/Satellite.
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