Home - Linux Sysadmins

How to Setup Kubernetes (K8s) Cluster with Rancher

How to Set up a Kubernetes Cluster with Rancher

Babin Lonston - Modified date: September 19, 2019

How to Setup Kubernetes (K8s) Cluster on Ubuntu 18.04 LTS

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

Babin Lonston - Modified date: September 19, 2019

Docker Cheat Sheet for Sysadmins

Babin Lonston - Modified date: September 19, 2019

DON'T MISS

Linux Variant's

Step by Step Installing CentOS Linux 8 with Screenshots

Babin Lonston - Modified date: September 25, 2019 1

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

Cloud & Containerization Babin Lonston - Modified date: September 19, 2019 0

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

Cloud & Containerization Babin Lonston - Modified date: September 19, 2019 0

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

Ubuntu Linux Babin Lonston - Modified date: September 19, 2019 0

How to Create a Thinly Provisioned Logical Volume on CentOS/RHEL/7/8

Storage Servers Babin Lonston - Modified date: October 1, 2019 0

Storage Servers

How to Create a Thinly Provisioned Logical Volume on CentOS/RHEL/7/8

Babin Lonston - Modified date: October 1, 2019 0

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

Storage Servers

Migrating Logical Volume in Logical Volume Management

Babin Lonston - Modified date: September 28, 2019 1

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)

Storage Servers Babin Lonston - Modified date: October 29, 2019 1

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)

Storage Servers Babin Lonston - Modified date: September 28, 2019 0

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

Storage Servers Babin Lonston - Modified date: November 1, 2019 4

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

Storage Servers Babin Lonston - Modified date: November 1, 2019 0

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

Security

How to Migrate Existing Iptables to Nftables in RHEL8/CentOS

Babin Lonston - Modified date: September 19, 2019 0

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.

Security

How to start using SELinux or Security-Enhanced Linux

Babin Lonston - Modified date: November 1, 2019 0

SELinux is one of security layer in Linux which protect the directory, files, process and ports with its own labels by preventing unauthorised access.

Security

Generate a CSR Certificate Signing Request in Linux

Babin Lonston - Modified date: September 19, 2019 0

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

LINUX OPERATING SYSTEMS

Linux Variant's

Step by Step Installing CentOS Linux 8 with Screenshots

Babin Lonston - Modified date: September 25, 2019 1

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.

Step by step Oracle Linux 8 Installation guide with screenshots

Linux Variant's Babin Lonston - Modified date: September 19, 2019 0

Installing RedHat Enterprise Linux 8.0 with screenshots

Linux Variant's Babin Lonston - Modified date: September 19, 2019 0

Step by step Debian Linux 9 Installation guide with screenshots

Linux Variant's Babin Lonston - Modified date: September 19, 2019 0

Step by step Scientific Linux 7.5 Installation guide with screenshots

Linux Variant's Babin Lonston - Modified date: September 19, 2019 0

SYSTEM MANAGEMENT

System Management

Install FOG imaging solution for Linux/Windows and Mac

Babin Lonston - Modified date: September 19, 2019 0

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

System Management

How to install and register Linux clients with Spacewalk server 2.8

Babin Lonston - Modified date: September 19, 2019 2

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...

System Management

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

Babin Lonston - Modified date: September 19, 2019 2

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

System Management

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

Babin Lonston - Modified date: September 19, 2019 0

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

Automation Babin Lonston - Modified date: September 19, 2019 2

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

Automation Babin Lonston - Modified date: September 19, 2019 0

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

Creating a Logical volume based file system using Ansible

Automation Babin Lonston - Modified date: September 19, 2019 0

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

RunDeck IT automation tool step by step installation guide

Automation Babin Lonston - Modified date: September 19, 2019 0

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

Automation Babin Lonston - Modified date: September 19, 2019 1

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

100 Linux Interview Questions for Beginners in 2019

Babin Lonston - Modified date: September 19, 20190

Linux Interview Q&A

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

Troubleshooting

You account are not allowed to access to crontab because of pam configuration.

Babin Lonston - Modified date: September 19, 2019 0

(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”

Troubleshooting Babin Lonston - Modified date: September 19, 2019 0

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

Troubleshooting Babin Lonston - Modified date: September 19, 2019 0

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

Troubleshooting Babin Lonston - Modified date: September 19, 2019 0

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

Web Server

Install and configure Apache Tomcat 8.5 on Red Hat7 & CentOS7

Ahmad Wamiq - Modified date: August 23, 2019 0

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

Web Server Babin Lonston - Modified date: September 19, 2019 0

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

Web Server Babin Lonston - Modified date: September 19, 2019 0

(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

Web Server Babin Lonston - Modified date: September 19, 2019 0

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...

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Linux Administration

Linux System Administrator’s Guide for Centos 7, Red Hat 7 and Oracle Linux 7

Babin Lonston - Modified date: September 19, 2019 0

Linux System Administrator's Guide for Centos 7, Red Hat 7 and Oracle Linux 7 https://www.youtube.com/playlist?list=PLul5VFKIDNzlUMdP-5r5bW3d5u2sH1baf This System administration guide will start from a server build from...

Linux Administration

Using AppStream with yum in Red Hat Enterprise Linux 8

Babin Lonston - Modified date: October 18, 2019 0

AppStream and yum in Red Hat Enterprise Linux 8 helps to perform the safest way of installing packages using a module method with Streams and profiles.

Storage Servers

Creating Software RAID and Volumes on Openfiler Storage

Babin Lonston - Modified date: September 19, 2019 0

(adsbygoogle = window.adsbygoogle || ).push({}); In our previous article we have a walk through...

Database Servers

Install MongoDB Replication setup on CentOS 7 and RHEL 7

Ahmad Wamiq - Modified date: August 13, 2019

Database Servers

How to Install MongoDB 4.0.5 on CentOS7 and RedHat7

Ahmad Wamiq - Modified date: June 11, 2019

Database Servers

Creating ASM disks using SAN disks through multipath in Oracle DB Servers

Babin Lonston - Modified date: September 19, 2019

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LATEST ARTICLES

Linux Variant's

Step by Step Installing CentOS Linux 8 with Screenshots

Babin Lonston - September 25, 2019 1

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.

Cloud & Containerization

How to Set up a Kubernetes Cluster with Rancher

Babin Lonston - September 19, 2019 0

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

Cloud & Containerization

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

Babin Lonston - September 19, 2019 0

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

Ubuntu Linux

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

Babin Lonston - September 19, 2019 0

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.

Storage Servers

How to Create a Thinly Provisioned Logical Volume on CentOS/RHEL/7/8

Babin Lonston - October 1, 2019 0

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

Linux Administration

How to Create a Linux Network Bridge on CentOS/RHEL7/8

Babin Lonston - November 1, 2019 1

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.

Security

How to Migrate Existing Iptables to Nftables in RHEL8/CentOS

Babin Lonston - September 19, 2019 0

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.

Linux Administration

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

Babin Lonston - September 19, 2019 0

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.

Linux Administration

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

Babin Lonston - September 19, 2019 1

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.

Virtualization

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

Babin Lonston - September 19, 2019 0

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

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