Category: Openstack
Learn how to – List of OpenStack Core Services Explained
Learn how to – List of OpenStack Core Services Explained. OpenStack is an Infrastructure as a service (IaaS) cloud solution with a collection of services that interact to control storage, compute, and networking resources. As a Cloud Administrator you can use a command-line or web-based dashboard provision, control, and automate OpenStack resources. OpenStack has an …
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Learn how to – How to Add OpenStack Compute Flavors using CLI
Learn how to – How to Add OpenStack Compute Flavors using CLI. How to add flavors to openstack using cli: This is a continuation of getting started with Openstack compute platform series. Earlier in the series we looked at Adding images to Openstack Glance. What are Openstack flavors? In OpenStack, a flavor defines the compute, …
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Learn how to – Install OpenStack on Rocky Linux 8 – Configure Glance (Step 4)
Learn how to – Install OpenStack on Rocky Linux 8 – Configure Glance (Step 4). Welcome to Part 4 of our article series on the installation and configuration of OpenStack on Rocky Linux 8 servers. In Part 3 we covered the setup of Keystone service. OpenStack Image service (glance) is a service that allows cloud …
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Learn how to – Fix Openstack Nova error “NoValidHost: No valid host was found.There are not enough hosts available. “
Learn how to – Fix Openstack Nova error “NoValidHost: No valid host was found.There are not enough hosts available. “. 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 an instance with nova …
Learn how to – Install OpenStack Magnum Container Service on CentOS / Ubuntu
Learn how to – Install OpenStack Magnum Container Service on CentOS / Ubuntu. Magnum is an OpenStack API service created to help OpenStack user manage container orchestration engines such as Kubernetes, Docker Swarm, and Apache Mesos. Magnum uses Heat to orchestrate an OS image which contains Docker and Kubernetes and runs that image in either …
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Learn how to – Create and Configure Bridge Networking For KVM in Linux
Learn how to – Create and Configure Bridge Networking For KVM in Linux. In today’s guide, we will look at how to Create and Configure Bridge Networking For KVM in Linux – RHEL / CentOS / Ubuntu / Debian / Arch Linux e.t.c. Linux bridge when used in KVM, allows a Virtual Machine to Access …
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Learn how to – Installation of Three node OpenStack Queens Cluster – Part Seven
Learn how to – Installation of Three node OpenStack Queens Cluster – Part Seven. Configuring Neutron on network Node “Everyone has been made for some particular work, and the desire for that work has been put in every heart.”–Rumi Step One: Install NTP and add necessary repositories: [root@neutron ~]# yum -y install ntp Loaded plugins: …
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Learn how to – Installation of Three node OpenStack Queens Cluster – Part Two
Learn how to – Installation of Three node OpenStack Queens Cluster – Part Two. Part one of this series is Installation of Openstack three Node Cluster on CentOS 7 Installation of Glance In this second session, we are going to install glance image service. The Image service (glance) project provides a service where users can upload …
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Learn how to – Openstack Error Qemu-img: Could not open ‘/var/lib/libvirt/images/’ Permission Denied
Learn how to – Openstack Error Qemu-img: Could not open ‘/var/lib/libvirt/images/’ Permission Denied. Have you ever received an error message like below while working with Openstack and KVM?. If so, a fix is given in this brief article. Command: env LC_ALL=C LANG=C qemu-img info /var/lib/libvirt/images/asterisk.qcow2 Exit code: 1 Stdout: u” Stderr: u”qemu-img: Could not open …
Learn how to – Permission Denied While Starting VM Instance in Openstack
Learn how to – Permission Denied While Starting VM Instance in Openstack. As I was building Openstack Lab, I happen to encounter error message as it was seen on a log file from.tail -f /var/log/nova/nova-compute.log $ tail -f /var/log/nova/nova-compute.log 2016-03-21 22:05:34.283 1228 ERROR oslo_messaging.rpc.dispatcher rv = meth(*args, **kwargs) 2016-03-21 22:05:34.283 1228 ERROR oslo_messaging.rpc.dispatcher File “/usr/lib64/python2.7/site-packages/libvirt.py”, …
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