Friday, April 19, 2019

How to Fix Openstack Nova error “NoValidHost: No valid host was found.There are not...

I was trying to Deploy Openstack for testing inside VirtualBox and i got an error "NoValidHost: No valid host was found. There are not enough hosts available." while trying to run...

Monitor Linux System with Grafana and Telegraf

In this article, we're going to look at how to Monitor a Linux System with Grafana and Telegraf. Telegraf metrics will be stored on InfluxDB, then we can visualize...

How to run Minikube on KVM

Minikube is a tool developed to help you run a single cluster of Kubernetes on your local machine. Minikube works by starting a single node kubernetes cluster locally for purposes of development...

Configure NFSv3 and NFSv4 on CentOS 7

In this guide, I'll take you through the installation of NFSv3 and NFSv4 Server on CentOS 7. The only prerequisite for this is that you should have installed CentOS 7 server and data...

How to install and use pi-hole on Linux – A black hole for...

In this guide, we will cover the installation and usage of pi-hole on Ubuntu 18.04 / Ubuntu 16.04 / Debian and CentOS 7 system. pi-hole is a DNS sinkhole for Internet advertisements which...

How to Configure FreeIPA Client on Ubuntu 18.04 / Ubuntu 16.04 / CentOS 7

We recently covered the installation of FreeIPA Server on Ubuntu 18.04 and Ubuntu 16.04 server. In this guide, I'll show you how you can install and configure FreeIPA Client on Ubuntu...

How to Install Java 11 on CentOS 7 / Fedora 29 / Fedora 28

This article will help you to install Oracle Java 11 on CentOS 7 and Fedora 29. Java 11 is a long-term support (LTS) release. Java 11 was made available...

Install and Configure Docker Registry on CentOS 7

A Docker registry is a storage and content delivery system that holds named Docker images, available in different tagged versions. Users using Docker interact with a registry by using docker push and...

Install Ansible AWX on CentOS 7 / Fedora with Nginx Reverse Proxy and Letsencrypt

Welcome to our guide on How to Install Ansible AWX on CentOS 7 / Fedora with Nginx Reverse Proxy and Letsencrypt SSL Certificate. This installation will have http to https redirection configured...

How to Install FreeIPA Server on CentOS 7

In this guide, we'll look at how to Install FreeIPA Server on CentOS 7. Once you have FreeIPA running, your problems of having to manually manage user accounts/authentication on Linux Systems will...