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

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Troubleshooting

Change default kernel to boot in RHEL 8 | Easy guide

Posted on: December 13, 2020March 6, 2022

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.

Troubleshooting

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

Posted on: December 12, 2020March 6, 2022

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

Ubuntu Linux / Troubleshooting

Recovering from Ubuntu dual boot issue | Chroot Ubuntu

Posted on: December 30, 2016March 6, 2022

To recover from a windows installation first we need to boot from LiveCD of Ubuntu if you installed with system 32-bit use 32bit Live CD If 64bit use […]

  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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