OpenStack Overview and Hands-on

JeSam Kimjesamkim@gmail.com

Agenda1. OpenStack Overview

2. Introducing OpenStack Project

3. OpenStack Hands-on

- Installing and Setting CentOS 7.2

- Installing RDO using Packstack

- OpenStack Administration

4. Q&A

1. OpenStack Overview• Open source software for creating private and pub-

lic clouds

1. OpenStack Overview• OpenStack History

OpenStack is developed and released around 6-month cycles. After the initial release, additional stable point releases will be released in each release series.

2. Introducing OpenStack Project

• Core Services- NOVA : Compute- NEUTRON : Networking- GLANCE : Image Service- KEYSTONE : Identity- CINDER : Block Storage- SWIFT : Object Storage

• Optional Services- HORIZON : Dashboard- CEILOMETER : Telemetry- HEAT : Orchestration- TROVE : Database- SAHARA : Elastic Map Reduce- MAGNUM : Containers- BARBICAN : Key Management- and Many More..

2. Introducing OpenStack Project

• NOVA (Compute)- Manages the lifecycle of compute instances in an OpenStack environment. Responsibilities include spawning, scheduling and decomissioning of machines on demand.

• NEUTRON (Networking)- 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.

2. Introducing OpenStack Project

• GLANCE (Image Service)- Stores and retrieves virtual machine disk images. OpenStack Compute makes use of this during instance provisioning.

• KEYSTONE (Identity)- Provides an authentication and authorization service for other OpenStack services. Pro-vides a catalog of endpoints for all OpenStack services.

• HORIZON (Dashboard)- 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.

2. Introducing OpenStack Project

• CINDER (Block Storage)- Provides persistent block storage to running instances. Its pluggable driver architecture fa-cilitates the creation and management of block storage devices.

• SWIFT (Object Storage)- 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.

2. Introducing OpenStack Project

• NEUTRON – ML2 architecture

2. Introducing OpenStack Project

• NEUTRON – ML2 Type Driver : vxlan- VXLAN allows you to create a logical network for your virtual machines across different networks. More technically speaking, you can create a layer 2 network on top of layer 3. VXLAN does this through encapsulation.VXLAN has addi -tional features over other network deployment models in terms of isolation as well as performance.

2. Introducing OpenStack Project

• NameSpace - Isolated networking stack

2. Introducing OpenStack Project

• Multi Nodes example

3. OpenStack Hands-on• Hands-on Environment (All-in-One)

Virtualization

NOVA NEUTRON CINDER

KEYSTONEHORIZON GLANCE

“VM1”10.0.0.3

“VM2”10.0.0.4

“router1”10.10.0.1

“private_network”10.0.0.0/24

br-ex ens32

ens33

192.168.0.216 (Public Network)

100.100.100.101 (Private Network)

internet

“public”172.24.4.0/24

ESXi 4.1

CentOS 7.2

br-int

br-tun

3. OpenStack Hands-on• Installing CentOS 7- minimal installation- kdump : OFF- Security : OFF- Network : ONBOOT- Root password : passw0rd

3. OpenStack Hands-on• Setting CentOS 7

- verify IP address (optional)

- setting hostname (mandatory)

- setting route (optional)

# ip addr show# vi /etc/sysconfig/network-scripts/ifcfg-ens32, ens33

....# systemctl restart network

# hostnamectl set-hostname openstack# vi /etc/hosts 127.0.0.1 openstack 100.100.100.101 openstack

# ip route# ip route del default via 100.100.100.101 dev ens33# ip route add default via 192.168.0.1 dev ens32

3. OpenStack Hands-on• Setting CentOS 7

- setting ssh (optional)

- Stop and Disable “NetworkManager”, “Firewalld” services (mandatory)

# vi /etc/ssh/sshd_configPermitRootLogin=yesPasswordAuthentication=yes

# systemctl restart sshd

# systemctl stop NetworkManager# systemctl disable NetworkManager# systemctl stop firewalld# systemctl disable firewalld# getenforce# setenforce 0# vi /etc/sysconfig/selinux

selinux=permissive

3. OpenStack Hands-on• Installing RDO using Packstack

- Installing RDO repository

- Installing packstack setup utility

# yum -y install https://repos.fedorapeople.org/repos/openstack/openstack-mitaka/rdo- release-mitaka-5.noarch.rpm# yum makecache# yum –y update

# yum -y install openstack-packstack# packstack -h

3. OpenStack Hands-on• Installing RDO using Packstack

- Generate answer-file (configuration file)

- Install OpenStack via packstack

# packstack --gen-answer-file=rdo.txt# vi rdo.txt ... CONFIG_DEFAULT_PASSWORD=openstack CONFIG_KEYSTONE_ADMIN_PW=openstack CONFIG_NEUTRON_ML2_TYPE_DRIVERS=vxlan,local,flat CONFIG_NEUTRON_ML2_TENANT_NETWORK_TYPES=vxlan CONFIG_NEUTRON_OVS_TUNNEL_IF=ens33 CONFIG_CEILOMETER_INSTALL=n CONFIG_PROVISION_DEMO_FLOATRANGE=172.24.4.0/24 ## and All HOST IP addresses change to ens33(private) ip address(100.100.100.101) ...

# packstack --answer-file=rdo.txt

3. OpenStack Hands-on• OpenStack Administration

> Create Project / User > Create Private Network/Subnet > Create Private Router > Create Instance > Access Instance via Private IP using NameSpace > Associate Floating IP > Access Instance via Floating IP > Attach Block Storage

Q & A

References• https://www.openstack.org

• https://releases.openstack.org

• http://www.cloudenablers.com/blog/configuring-vxlan-in-openstack-neutron/

• http://www.opencloudblog.com/?p=66

• OpenStack in Action - V.K. Cody Bumgradner

• OpenStack Essentials 2nd Edition – Dan Radez

• Common OpenStack Deployments – Elizabeth K. Joseph, ...

• https://www.rdoproject.org