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

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Web Server

Install and configure Apache Tomcat 8.5 on RHEL & CentOS7

Posted on: December 6, 2018March 7, 2022

Apache Tomcat is an open-source technology, which licensed under Apache License version 2. Basically to understand what the use of Tomcat it’s a simple HTTP server used for Java Servlet, JavaServer Pages, Java Expression Language.

Linux Administration

Install Oracle Java JDK on RHEL 7/CentOS 7

Posted on: December 5, 2018March 7, 2022

Java used in every device across the production and development environment, Java lets you develop and deploy Java applications on desktops and servers.

Ubuntu Linux

How to install Android Studio 3.2.1 on Ubuntu 16.04 LTS/17.10/18.04 LTS

Posted on: December 3, 2018March 7, 2022

Introduction Hello, fellow Android enthusiasts, you can install “Android Studio” on Ubuntu 16.04/17.10/18.04 by not just one method we have multiple ways to install it. Android Studio is […]

How to attach a Docker volume to the container
Cloud & Containerization

How to attach a Docker volume to the container

Posted on: November 6, 2018March 6, 2022

how to attach a persistent volume in a docker container. If we don’t have separate storage the data will not persist once the container is no longer up and running.

How to manage Docker containers
Cloud & Containerization

How to manage Docker containers

Posted on: November 2, 2018March 6, 2022

How to manage Docker containers by stopping, resuming, killing and removing. Removing Docker images required docker stop then we can remove them.

How to expose the docker network
Cloud & Containerization

How to expose the docker network

Posted on: October 29, 2018March 6, 2022

Connect with Docker containers and expose the docker network to know the IP address and ports. Launch a container using the specific forward IP address.

How to search for docker images and launch a container
Cloud & Containerization

How to search for docker images and launch a container

Posted on: October 27, 2018March 6, 2022

How to launch a Docker container by searching for a docker images in docker registry. By the following pull and launch a docker container from command line.

Creating our 1st DNS zones and DNS record in IPA Server
Identity Server

Creating our 1st DNS zones and DNS record in IPA Server

Posted on: October 26, 2018March 6, 2022

Creating DNS zones in Red Hat IDM server or IPA server. And create DNS records in the zone for a forward lookup and reverse lookup.

Installing Docker on Red Hat Enterprise Linux and CentOS Linux 7
Cloud & Containerization

Installing Docker on Red Hat Enterprise Linux and CentOS Linux 7

Posted on: October 22, 2018March 6, 2022

Docker is an open-source software which helps to set up with Container as a service CaaS. It will covert the operating system as a virtualization platform.

Change systemd network interface name ensxx to eth0
Linux Administration

Change systemd network interface name ensxx to eth0

Posted on: October 16, 2018March 6, 2022

Changing systemd network interface name (ensxx) in RHEL and CentOS to a legacy naming convention eth0.

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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