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Monitoring Proxmox with InfluxDB and Grafana in 4 Easy steps

January 14, 2021 No Comments

A short guide for Monitoring Proxmox environment and visualizes resource utilization using InfluxDB and Grafana.

Install InfluxDB on Linux | 3 Easy steps

January 2, 2021 No Comments

Install InfluxDB on Linux servers to capture the time series formatted database from any devices. It helps to create a rich visualization graph.

Migrating from CentOS 8 to CentOS 8 Stream

December 31, 2020 1 Comment

For anyone who is developing applications to run on Red Hat Enterprise Linux 8, CentOS 8 Stream really is a blessing since you now have access to a stable operating system on which your application will eventually run.

Troubleshooting Guides

Change default kernel to boot in RHEL 8 | Easy guide

December 13, 2020 No Comments

A how-to guide to Set the default kernel in RHEL based operating system. This may be required when we are installed with multiple kernel versions in our Linux servers.

grub2-editenv: error: environment block too small | Simple Solution

December 12, 2020 No Comments

A quick guide to resolve the “grub2-editenv: error: environment block too small” error when the grubenv file size exceeds the expected 1024 bytes.

vSAN cluster UUID mismatch | 1 Quick Solution

August 16, 2020 No Comments

A quick solution to resolve vSAN cluster UUID mismatch in VMware environment.

Glibc

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.

April 1, 2020 No Comments

Linux permission

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.

March 31, 2020 1 Comment

Sudo

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.

March 29, 2020 No Comments

foreman

Register a Linux client with Foreman

How to subscribe a client with our content management server foreman/Katello/Satellite.

March 27, 2020 14 Comments

foreman

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.

March 25, 2020 17 Comments

Wazuh

Install Wazuh Open Source Security Analytics

Install production-ready Wazuh OpenSource security analytics tool to monitor your critical production environment.

March 17, 2020 2 Comments

IDM Server

Setup a FreeIPA or IDM Replica

IDM replica is the same copy of the existing master IDM server. The use of a replica is to have multiple copies of master and it can be used in different geographical location.

March 1, 2020 5 Comments

Filesystem

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.

February 4, 2020 No Comments

OpenStack

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.

January 30, 2020 No Comments

Oracle Database

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.

January 28, 2020 No Comments

Grub Rescue

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.

January 19, 2020 2 Comments