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

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Cloud & Containerization / Linux Administration

Setting Up HAProxy for Kubernetes High Availability

Posted on: June 18, 2024June 18, 2024

Introduction Setting up HAProxy for Kubernetes high availability involves configuring HAProxy as a load balancer to distribute incoming traffic across multiple Kubernetes control plane nodes. HAProxy ensures redundancy […]

Linux Administration

Upgrade RHEL 7 to RHEL 8 from RedHat Satellite Server | LEAPP Upgrade

Posted on: June 14, 2022June 14, 2022

Perform a major release version upgrade for Red Hat Enterprise Linux server from a Red Hat satellite server.

Linux Administration

How to Enable SSH X11 Forwarding on a Linux Server.

Posted on: April 27, 2022May 25, 2022

how to enable SSH X11 forwarding on a Linux server.

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.

Linux Administration

Centralized Syslog server with Syslog-ng in 3 easy steps

Posted on: December 29, 2020July 5, 2022

Up and running with a centralized Syslog server using Syslog-ng. Which provides an advanced filtering and configuration support than any other logging management solution.

Linux Administration

Configure Network Teaming in RHEL/CentOS8

Posted on: May 12, 2020March 6, 2022

Network Teaming or Link Aggregation, The mechanism of the teaming is by including multiple NIC’s into one.

Linux Administration

Linux Sudo to run Privileged Commands

Posted on: March 29, 2020March 6, 2022

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.

Linux Administration

How to Backup and Restore XFS filesystem in RHEL 8

Posted on: February 4, 2020March 6, 2022

To backup and restore an XFS filesystem it’s possible by installing xfsdump package which provides xfsdump and xfsrestore commands.

Linux Administration

How to build an RPM package from Source

Posted on: November 22, 2019March 6, 2022

PRM Package, Packing an RPM may require while we need to build something from source.

Linux Administration

How to create a Linux Network Bridge on CentOS/RHEL7

Posted on: August 31, 2019March 6, 2022

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.

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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