OpenStack is a set of software tools for building and managing cloud computing platforms for public and private clouds. Backed by some of the biggest companies in software development and hosting, as well as thousands of individual community members, many think that OpenStack is the future of cloud computing. OpenStack is managed by the OpenStack Foundation, a non-profit that oversees both development and community-building around the project.
And most importantly, OpenStack is open source software, which means that anyone who chooses to can access the source code, make any changes or modifications they need, and freely share these changes back out to the community at large.
Nova is the primary computing engine behind OpenStack. It is used for deploying and managing large numbers of virtual machines and other instances to handle computing tasks
Swift is a storage system for objects and files. Rather than the traditional idea of a referring to files by their location on a disk drive, developers can instead refer to a unique identifier referring to the file or piece of information and let OpenStack decide where to store this information. This makes scaling easy, as developers don’t have the worry about the capacity on a single system behind the software. It also allows the system, rather than the developer, to worry about how best to make sure that data is backed up in case of the failure of a machine or network connection.
Cinder is a block storage component, which is more analogous to the traditional notion of a computer being able to access specific locations on a disk drive. This more traditional way of accessing files might be important in scenarios in which data access speed is the most important consideration.
Neutron provides the networking capability for OpenStack. It helps to ensure that each of the components of an OpenStack deployment can communicate with one another quickly and efficiently.
Horizon is the dashboard behind OpenStack. It is the only graphical interface to OpenStack, so for users wanting to give OpenStack a try, this may be the first component they actually “see.” Developers can access all of the components of OpenStack individually through an application programming interface (API), but the dashboard provides system administrators a look at what is going on in the cloud, and to manage it as needed.
Keystone provides identity services for OpenStack. It is essentially a central list of all of the users of the OpenStack cloud, mapped against all of the services provided by the cloud, which they have permission to use. It provides multiple means of access, meaning developers can easily map their existing user access methods against Keystone.
Glance provides image services to OpenStack. In this case, “images” refers to images (or virtual copies) of hard disks. Glance allows these images to be used as templates when deploying new virtual machine instances.
Ceilometer provides telemetry services, which allow the cloud to provide billing services to individual users of the cloud. It also keeps a verifiable count of each user’s system usage of each of the various components of an OpenStack cloud. Think metering and usage reporting.
In this article we will show you quick and easy way to deploy OpenStack as PoC(Proof of Concept). We will be using RDO and CentsOS 7 for this tutorial. RDO is a community of people using and deploying OpenStack on CentOS and Red Hat Linux. We will be using packstack installation utility which is Puppet based installation utility
We will be deploying pike current pike release
1. We installed minimum CentOS 7 ON hardware system with 16GB RAM, processors with hardware virtualization extensions, and 2 network adapters
2. Disable network manager and assight static IP to one of network interfaces
systemctl disable NetworkManager systemctl stop NetworkManager systemctl enable network systemctl start network
3. Disable firewalld
Systemctl disable firewalld
4 disable selinux
Vi /etc/selinux SELINUX=disabled
5 set hostname for our openstacl poc server
hostnamectl set-hostname openstackpoc.local
9. Reboot your system after all above steps are done.
SETUP SOFTWARE REPOSITORIES
Lets download and install all necessary RDP repository
yum install -y https://rdoproject.org/repos/rdo-release.rpm yum install -y centos-release-openstack-pike
Yum install yum-utils yum-config-manager --enable openstack-pike
Run update on current packages
Yum update -y
Install packstack installer
yum install -y openstack-packstack
RUN PACKSTACK TO INSTALL OPENSTACK
Running an instance
. demo-openrc openstack flavor list openstack image list openstack network list openstack security group list
Create an instance
openstack server create --flavor m1.nano --image cirros \ --nic net-id=PROVIDER_NET_ID --security-group default \ --key-name mykey provider-instance