Learn Openstack for quick deployment on Icehouse / Devstack /Packstack .

1. OPENSTACK IN 1 mins
Dawood Sayyed

2. What is Open Stack ?
• OpenStack is a free and open-source software platform for cloud
computing, mostly deployed as an infrastructure-as-a-service (IaaS).
The software platform consists of interrelated components that
control hardware pools of processing, storage, and networking
resources throughout a data center.

3. What we will do with Open-stack ?
• Single node installation
• Multi node installation
• Difference between Dev-stack and Pack-stack
• Dev-stack installation
• Pack-stack installation

4. Openstack Services
• Dashboard / Horizon
• Provides a web-based self-service portal to interact with underlying
OpenStack services, such as launching an instance, assigning IP
addresses and configuring access controls.
• Compute / Nova
• Manages the lifecycle of compute instances in an OpenStack
environment. Responsibilities include spawning, scheduling and
decommissioning of virtual machines on demand.

5. Openstack Services
• Networking / Neutron
• Enables Network-Connectivity-as-a-Service for other OpenStack
services, such as OpenStack Compute. Provides an API for users to
define networks and the attachments into them. Has a pluggable
architecture that supports many popular networking vendors and
technologies.

6. Openstack Services
• Object Storage /Swift
• Stores and retrieves arbitrary unstructured data objects via a RESTful,
HTTP based API. It is highly fault tolerant with its data replication and
scale-out architecture. Its implementation is not like a file server with
mountable directories. In this case, it writes objects and files to
multiple drives, ensuring the data is replicated across a server cluster.

7. Openstack Services
• Block Storage /Cinder
• Provides persistent block storage to running instances. Its pluggable
driver architecture facilitates the creation and management of block
storage devices.
• Image Service /Glance
• Stores and retrieves virtual machine disk images. OpenStack Compute
makes use of this during instance provisioning.

8. Openstack Services
• Telemetry / Ceilometer
• Monitors and meters the OpenStack cloud for billing, benchmarking,
scalability, and statistical purposes.
• Orchestration /Heat
• Orchestrates multiple composite cloud applications by using either
the native HOTtemplate format or the AWS CloudFormation template
format, through both an OpenStack-native REST API and a
CloudFormation-compatible Query AP

9. Single node installation on Openstack
• Single Node
• Single Node Installation runs all OpenStack services in one node
including Control, Network, Compute, Storage services.
• Networking
• It is recommended to have 2 NIC cards (eth0 and eth1) to install
OpenStack. However, for this tutorial we will use a single interface
eth0 with a static IP (192.168.100.10). We can use same IP (as eth0)
as gateway of external subnet or add virtual interface (eth0:1) with
different subnet.

10. Networking on single node Openstack
• It is recommended to have 2 NIC cards (eth0 and eth1) to install
OpenStack. However, for this tutorial we will use a single interface
eth0 with a static IP (192.168.100.10). We can use same IP (as eth0)
as gateway of external subnet or add virtual interface (eth0:1) with
different subnet
• # vi /etc/network/interfaces
• auto eth0
• iface eth0 inet static
• address 192.168.100.10
• netmask 255.255.255.0

11. Networking on single node Openstack
• gateway 192.168.100.1
• # service networking restart → if required
• # hostname <hostname>
• # echo <hostname> > /etc/hostname
• # echo ‘192.168.100.10 <hostname>’ >> /etc/hosts

12. Single node OpenStack Ubuntu Cloud Archive
Repo
• Now install the latest stable release of Openstack (Kilo/Liberty) from
Ubuntu’s cloud archive:
• # apt-get install python-software-properties
• # add-apt-repository cloud-archive:kilo
• # apt-get update
• # apt-get dist-upgrade (Optional)

13. Openstack Single node install MySQL Server
• OpenStack services require a database to store information and
supports many popular database engines including MongoDB and
PostGre. In this tutorial, we will use MySQL as database backend.
• # apt-get install python-mysqldb mysql-server
• #bind-address 192.168.100.10 (Comment out this line or change
192.168.100.10 to 0.0.0.0)

14. Openstack Single Node Install Messaging
server
• OpenStack requires a Messaging / Broker service to communicate
between its services. We will use RabbitMQ but Qpid and ZeroMQ
(0MQ) are also supported.
• # apt-get install rabbitmq-server
• It is optional to change the password in the dev environment but is
recommended in production. By default guest user is created with
password guest.
• # rabbitmqctl change_password guest <New_Pass>

15. Enable IP Forwarding
• We need to enable Packet Forwarding for networking to work, we can
opt. this to configure during Network installation.
• # vi /etc/sysctl.conf
• net.ipv4.ip_forward=1 (Uncomment this line)

16. Multinode Openstack

17. NIC Requirement for Multinode
• Networking:
• Following is the NIC card requirement for multi node installation of
OpenStack:
• Compute node
• Control node
• Network node

18. Compute Node
• Compute Node
• Two Network Interfaces:
• a. External Network: Used for External Connectivity
• b. Management Network: Used for connectivity for OpenStack nodes.

19. Control Node
• Control Node
• Two Network Interfaces:
• a. External Network: Used for External Connectivity
• b. Management Network: Used for connectivity for OpenStack nodes

20. Network Node
• Network
• Three Network Interfaces:
• a. External Network: Used for External Connectivity
• b. Management Network: Used for connectivity for OpenStack nodes
• c. Data Network: Used for connectivity between VM’s.
• Note that each network Interface must have a static IP.

21. Preparation of Control Node:
• Networking
• The control node has two Network Interfaces: One with network
connectivity (eth0), and another internal network for Management
use.
• # vi /etc/network/interfaces
auto eth0
• iface eth0 inet static
• address 192.168.100.10
• netmask 255.255.255.0

22. Preparation of Control Node
• gateway 192.168.100.1
• #Management Network
• auto eth1
• iface eth1 inet static
• address 10.0.0.10
• netmask 255.255.255.0
• gateway 10.0.0.1

23. Preparation of Control Node
• # service networking restart
• And set the hostname.

24. Multinode OpenStack Ubuntu Cloud Archive
repository
• To install OpenStack we will add the latest stable release (Codename:-
Liberty) repository.
• # apt-get install python-software-properties
• # add-apt-repository cloud-archive:Liberty
• # apt-get update
• # apt-get dist-upgrade (Optional)

25. Multinode Openstack Install MySQL server
• OpenStack services require a database to store information. We will
use MySQL as database back-end. OpenStack supports most of the
popular database engines such as mongodb, PostGre, etc.
• # apt-get install python-mysqldb mysql-server
• The next step is optional for single node installation. If we need to
add additional nodes, such as compute nodes or storage nodes,
MySQL should start on all the interfaces, as the default is only for
localhost.
• # /etc/mysql/my.cnf

26. Install MySQL server
• #bind-address 192.168.100.10 (Comment out this line or change
192.168.100.10 to 0.0.0.0)

27. Install Messaging server
• OpenStack requires a messaging/broker service to communicate
between its services. We will use RabbitMQ, but Qpid and ZeroMQ
(0MQ) are also supported
• # apt-get install rabbitmq-server
• It is optional to change the password in the dev environment,
however, it is recommended in production. By default, the guest user
is created with the password guest.
• # rabbitmqctl change_password guest &lt;New_Pass&gt;
• Now, the node is ready for OpenStack Installation.

28. Install MySQL python library.
• On network nodes we only need to install MySQL client and MySQL
Python library
• # apt-get install python-mysqldb

29. Devstack and Packstack
• DevStack is an opinionated script to quickly create an OpenStack
development environment. It can also be used to demonstrate
starting/running OpenStack services and provide examples of using
them from a command line.
• Packstack is a utility that uses Puppet modules to deploy various parts
of OpenStack on multiple pre-installed servers over SSH
automatically. Currently only Fedora, Red Hat Enterprise Linux (RHEL)
and compatible derivatives of both are supported.

30. Devstack Installation
• Select a Linux Distribution
• Only Ubuntu 14.04 (Trusty), Fedora 22 (or Fedora 23) and
CentOS/RHEL 7 are documented here. OpenStack also runs and is
packaged on other flavors of Linux such as OpenSUSE and Debian.
• Install Selected OS
• In order to correctly install all the dependencies, we assume a specific
minimal version of the supported distributions to make it as easy as
possible. We recommend using a minimal install of Ubuntu or Fedora
server in a VM if this is your first time.

31. Devstack Installation
• Download DevStack
• Git clone https://git.openstack.org/openstack-dev/devstack
• The devstack repo contains a script that installs OpenStack and
• Templates for configuration files
• Add Stack User
• Devstack should be run as a non-root user with sudo enabled
(standard logins to cloud images such as “ubuntu” or “cloud-user” are
usually fine).
• You can quickly create a separate stack user to run DevStack with

32. DevStack Installation
• Devstack/tools/create-stack-user.sh; su stack
• Cd devstack; ./stack.sh

33. PackStack Installation and Running
• Sudo yum install –y openstack-packstack
• Which packstack
• Single Node Deployment
• Packstack –install-hosts=192.168.1.0
• Multiple Node Deployment
• Packstack –install-hosts=192.168.1.0,192.168.1.1,192.168.1.2
• root@192.168.1.0’s password:

34. PackStack Installation and Running
• Packstack
• ~/.ssh/id_rsa.pub.
• Should Packstack install Glance image service.
• Should Packstack install Cinder volume service
• Should Packstack install Nova compute image service
• Should Packstack install Horizon dashboard service
• Should Packstack install Swift object storage service

35. Packstack client tools ?
• Should Packstack install Openstack client tools
• Should Packstack install NTP
• Should Packstack install Nagios to monitor openstack host