Instance Live Migration in OpenStack using CLI

Dear friend, in this tutorial we will see Instance Live Migration in OpenStack using CLI. Instance Migration will be needed when we need to migrate our running instance from one host to another host without any network break. For more details you can see OpenStack site. Click here Suppose if our one compute node is failing to provide compute services… Read moreInstance Live Migration in OpenStack using CLI

OpenStack Queens deployment using packstack on single VM

Dear friends, in this tutorial we will see OpenStack Queens deployment using packstack on single VM. Packstack is a command-line utility tools that rapidly deploys OpenStack. Packstack deployments are intended only for POC-type testing environments and are not suitable for production. Prerequisites Update /etc/hosts file We need to be configured /etc/hosts file according to our hostname and IP like below:-… Read moreOpenStack Queens deployment using packstack on single VM

How to Create and Configure Self-Signed SSL Certificates

In this tutorial we will see how to create and configure self-signed SSL certificates for apache on Linux? What is Self-singed SSL certificates and why we need Self-signed SSL certificates? What is Self-Signed SSL Certificate? Self-signed certificate is an identity certificate that is signed by the same entity whose identity it certifies. This term has nothing to do with the… Read moreHow to Create and Configure Self-Signed SSL Certificates

Ifconfig command not found in CentOS 7 and RHEL 7

Dear friend, today we will see how to resolve the issue “ifconfig command not found” in CentOS 7and RHEL 7. When we have installed CentOS 7 and RHEL 7 with minimal server option, then ifconfig command will not be running, this because net-tools package is not installed by default with minimal server option. If you wan this command in your… Read moreIfconfig command not found in CentOS 7 and RHEL 7

Ansible installation and configuration on CentOS 7

In this tutorial, we will see ansible installation and configuration on CentOS 7. We will also see how to manage node through ansible? So let’s start ansible installation and configuration on CentOS 7 and manage node from ansible tools. First off all we should know what is ansible? What is ansible? Ansible is a free and open source configuration and… Read moreAnsible installation and configuration on CentOS 7