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Linux sysadmins

Linux Sysadmins – Linux Guides, Nix Guides, Tutorials, Tips & Tricks.

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Linux Variant's

Migrate from CentOS 8.x to Rocky Linux 8.x | 1 Easy guide

Posted on: August 23, 2021March 6, 2022

An easy guide to migrate from CentOS 8 to Rocky Linux 8 with a minimal downtime for a production Server.

Linux Variant's

Step by step Rocky Linux 8.x Installation easy guide with screenshots

Posted on: July 26, 2021March 6, 2022

A simple step-by-step guide for Installing Rocky Linux 8.x with screenshots.

Identity Server / Virtualization

Integrating RHEV or Ovirt with Red Hat IDM for User Authentication | 1 Easy guide

Posted on: July 15, 2021March 6, 2022

A simple guide to Integrate RHEV Manager with Red Hat IDM or FreeIPA server for the User Authentication.

Directory Servers / Troubleshooting

Solution for IPA Error 4203: DatabaseError

Posted on: July 12, 2021March 6, 2022

Quick solution to fix the IPA error 4203 database error while adding new users from the IDM web interface.

Cloud & Containerization

Using Podman on CentOS and RHEL 8 | Easy Guide

Posted on: April 16, 2021March 6, 2022

Using Podman we can manage the containers similar to the docker command. Podman is more secure than using docker and easier the process while we moving to K8s.

pfSense Router

Setup VLAN on pfSense for Home Network | 1 Easy guide

Posted on: March 22, 2021March 6, 2022

An easy guide on how to setup VLAN on pfSense with step by step pictures. Which help to segregate your LAN network for your home which may be mixed with IoT.

Linux Administration

Setup a Linux server as a NAT router to share the Internet | 1 Easy guide

Posted on: March 18, 2021March 6, 2022

Setup a Linux Desktop/Server to act as a NAT router. A Simple step by step guide will help with getting the internet on clients servers.

Monitoring Tools

Monitoring Proxmox with InfluxDB and Grafana in 4 Easy steps

Posted on: January 14, 2021March 7, 2022

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

Database Servers

Install InfluxDB on Linux | 3 Easy steps

Posted on: January 2, 2021March 6, 2022

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

Linux Variant's

Migrating from CentOS 8 to CentOS 8 Stream

Posted on: December 31, 2020March 6, 2022

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.

Posts pagination

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  1. Gerald on Single Node OKD (OpenShift) Setup: A Fast and Easy GuideDecember 15, 2024

    Hi, in the 'Starting with Bootstrapping' step I have this error: DEBUG Still waiting for the Kubernetes API: Get "https://api.xxx.local:6443/version":…

  2. jos on How to Configure Sudo email alertMarch 4, 2022

    Hi! Some way to send commands write as root by email? Thanks!

  3. paul on Monitoring Proxmox with InfluxDB and Grafana in 4 Easy stepsMarch 1, 2022

    Tried 12966 per your example, got error "failed to import dashboard."

  4. Anonymous on Migrate existing Iptables to Nftables in RHEL8/CentOSFebruary 27, 2022

    I followed the procedures and successfully loaded some weird 8081 port configurations needed for the app, however I discovered it…

  5. sy on Install Ansible AWX on Kubernetes in 5 minutesFebruary 17, 2022

    tried many times - followed all steps but was unable to setup custom context I always get -> The connection…

Ansible (11) Apache (5) Docker (7) foreman (5) IDM Server (7) Kubernetes (14) linux commands (5) Linux networking (10) Linux Security (5) Logical Volume Management (13) OpenShift (8) Oracle Database (5) Solaris 11 (4) Solaris OS (6) VMware (5)

  • OKD Cluster (OpenShift) Installation on Bare Metal
  • Configuring HAProxy LB for OKD HA Cluster
  • Configuring DHCP Server for OKD HA Clusters
  • Configuring BIND DNS Server for OKD HA Clusters
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