Components

https://en.wikipedia.org/wiki/OpenStack#Components

Compute (Nova)
Networking (Neutron)
Block storage (Cinder)
Identity (Keystone)
Image (Glance)
Object storage (Swift)
Dashboard (Horizon)
Orchestration (Heat)
Workflow (Mistral)
Telemetry (Ceilometer)
Database (Trove)
Elastic map reduce (Sahara)
Bare metal (Ironic)
Messaging (Zaqar)
Shared file system (Manila)
DNS (Designate)
Search (Searchlight)
Key manager (Barbican)
Container orchestration (Magnum)
Rule-based alarm actions (Aodh)

Releases

https://releases.openstack.org/

Series  Status  Initial Release Date    Next Phase  EOL Date
Queens  Under Development   scheduled       TBD
Pike    Phase I – Latest release    2017-08-30  Phase II – Maintained release on 2018-02-26 2018-09-03
Ocata   Phase II – Maintained release   2017-02-22  Phase III – Legacy release on 2018-02-26    2018-02-26
Newton  Phase II – Maintained release   2016-10-06  Phase III – Legacy release on 2017-10-09    2017-10-11
Mitaka  EOL 2016-04-07      2017-04-10
Liberty EOL 2015-10-15      2016-11-17
Kilo    EOL 2015-04-30      2016-05-02
Juno    EOL 2014-10-16      2015-12-07
Icehouse    EOL 2014-04-17      2015-07-02
Havana  EOL 2013-10-17      2014-09-30
Grizzly EOL 2013-04-04      2014-03-29
Folsom  EOL 2012-09-27      2013-11-19
Essex   EOL 2012-04-05      2013-05-06
Diablo  EOL 2011-09-22      2013-05-06
Cactus  Deprecated  2011-04-15
Bexar   Deprecated  2011-02-03
Austin  Deprecated  2010-10-21

Hardware requirements & design

https://docs.openstack.org/newton/install-guide-rdo/overview.html#example-architecture
at least two nodes (hosts):controller(2 NICs) + compute(2 NICs)
Optional services such as Block Storage and Object Storage require additional nodes.

devstack

http://docs.openstack.org/developer/devstack/guides/single-machine.html
Use of postgresql in devstack is deprecated, and will be removed during the Pike cycle

export GIT_BASE=http://github.com  # fix git clone hangs issue
export no_proxy=127.0.0.1,192.168.88.15    # don't use *; fix: Could not determine a suitable URL for the plugin

sudo useradd -s /bin/bash -d /opt/stack -m stack
echo "stack ALL=(ALL) NOPASSWD: ALL" | sudo tee /etc/sudoers.d/stack
sudo su - stack
git clone https://git.openstack.org/openstack-dev/devstack

./stack.sh:main:224     xenial|yakkety|zesty|stretch|jessie|f24|f25|f26|opensuse-42.2|opensuse-42.3|rhel7|kvmibm1

http://docs.openstack.org/developer/openstack-ansible/developer-docs/quickstart-aio.html
https://developer.rackspace.com/blog/life-without-devstack-openstack-development-with-osa/

Ubuntu conjure-up

http://conjure-up.io/docs/en/users/#getting-started

snap install conjure-up --classic
conjure-up openstack

RDO/Packstack

https://www.rdoproject.org/install/packstack/

sudo systemctl disable firewalld
sudo systemctl stop firewalld
sudo systemctl disable NetworkManager
sudo systemctl stop NetworkManager
sudo systemctl enable network
sudo systemctl start network

yum install -y centos-release-openstack-pike && \
yum update -y  && \
yum install -y openstack-packstack && \
packstack --allinone || packstack --answer-file=FILE

Instance Images

http://docs.openstack.org/image-guide/obtain-images.html
http://cdimage.debian.org/cdimage/openstack/
http://linuximages.de/openstack/arch/