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

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Security

Up and running with Pi-hole for Network-wide Ad Blocking

Posted on: September 11, 2023September 10, 2023

A self reference guide on up and running with Pi-hole on a Ubuntu 22.04 LTS virtual machine. System Requirement for Pi-hole Using 192.168.0.50 as IP address for Pihole […]

Security

Solution for client_loop: send disconnect: Broken pipe

Posted on: September 26, 2022September 26, 2022

Introduction While trying to SSH we may get this error “client_loop: send disconnect: Broken pipe”. The reason behind the cause is, a normal user added with a SELinux […]

Security

Auto mount LUKS Encrypted file system with Network-Bound Disk Encryption NBDE

Posted on: April 30, 2022May 25, 2022

Auto mount a encrypted file system using Network bound disk encryption NBDE.

Security

SELinux Confining Users | Protecting Linux server from Users

Posted on: April 25, 2022May 25, 2022

Protecting Linux servers from user by configuring SELinux Confining Users

Security

Import RPM Signing GPG keys on CentOS 8

Posted on: May 8, 2020March 6, 2022

GPG Keys or GNU Privacy Guard is used to making sure that we are getting the right package from a trusted repository.

Security

Install Wazuh Open Source Security Analytics

Posted on: March 17, 2020March 6, 2022

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

Security

Migrate existing Iptables to Nftables in RHEL8/CentOS

Posted on: August 28, 2019March 6, 2022

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

Posted on: June 6, 2019March 6, 2022

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

Posted on: May 11, 2019March 6, 2022

Generating a Certificate Signing Request (CSR) for Secure Sockets Layer (SSL) Certificate required when we need to sign with a Certificate Authority (CA).

Security

How to Safely remove a Luks encrypted disk from Linux

Posted on: February 7, 2018April 30, 2022

Introduction In this guide, we are about to see how to safely remove a Luks encrypted disk from Red Hat Enterprise Linux 6, 7 and variant Linux distributions. […]

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
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