Packstack
Derek Higgins
Senior Software Engineer
Red Hat

Packstack
A utility that uses Puppet modules to deploy
various parts of OpenStack on multiple pre-
installed servers over SSH.

RDO
a freely-available, community-supported
distribution of OpenStack that runs on Red
Hat Enterprise Linux, Fedora, and their
derivatives.

RDO
● Makes it easy to install and deploy the most up-
to-date OpenStack components.
● Packages Openstack components and versions
of their dependencies that are known to work
together.
● Provides you with installation tools to simplify
Openstack installation

Packstack
1. sudo yum install -y http://...
2. sudo yum install -y openstack-packstack
3. packstack --allinone
or
3. packstack --gen-answer-file

Overview
● Python
user interactions
parsing answerfile
generate puppet manifests
coordinate puppet tasks
● ssh (multiple hosts)
● puppet
puppet apply
- in series on each host
- multiple hosts done in parallel (where possible)
● RDO Openstack packages

Packstack Plugins
● One per component
● Responsible for
● Registering config directives
● Minimal script on hosts
● Generating puppet manifest

Nova plugin : Config Directives
{"CMD_OPTION": "novaconductor-host",
"USAGE" : "The IP address of the server on which to install the Nova Conductor service",
"PROMPT": "Enter the IP address of the Nova Conductor service",
"OPTION_LIST" : [],
"VALIDATORS": [validators.validate_ip, validators.validate_ssh],
"DEFAULT_VALUE" : utils.get_localhost_ip(),
"MASK_INPUT": False,
"LOOSE_VALIDATION": True,
"CONF_NAME" : "CONFIG_NOVA_CONDUCTOR_HOST",
"USE_DEFAULT" : False,
"NEED_CONFIRM": False,
"CONDITION" : False },

Nova plugin : Config Directives
{"CMD_OPTION": "nova-db-passwd",
"USAGE" : "The password to use for the Nova to access DB",
"PROMPT": "Enter the password for the Nova DB access",
"OPTION_LIST" : [],
"VALIDATORS": [validators.validate_not_empty],
"DEFAULT_VALUE" : uuid.uuid4().hex[:16],
"MASK_INPUT": True,
"LOOSE_VALIDATION": False,
"CONF_NAME" : "CONFIG_NOVA_DB_PW",
"USE_DEFAULT" : True,
"NEED_CONFIRM": True,
"CONDITION" : False },

Nova plugin : script
server = utils.ScriptRunner(host)
cmd = "ip addr show dev %s"
server.append(cmd % (device, device))
server.execute()

Nova plugin : puppet manifest
def createkeystonemanifest(config):
manifestfile = "%s_keystone.pp"%controller.CONF['CONFIG_KEYSTONE_HOST']
manifestdata = getManifestTemplate("keystone_nova.pp")
appendManifestFile(manifestfile, manifestdata)
class {"nova::keystone::auth":
password => "%(CONFIG_NOVA_KS_PW)s",
public_address => "%(CONFIG_NOVA_API_HOST)s",
admin_address => "%(CONFIG_NOVA_API_HOST)s",
internal_address => "%(CONFIG_NOVA_API_HOST)s",
cinder => true,
}
keystone_nova.pp

Puppet plugin : applying modules
● Copy modules and manifests to all hosts
● Apply groups of manifests in parallel
● Don't run in parallel on same hosts
● Monitor for log file
● Search log file for errors
● Continue to next group of manifests

Puppet modules used
● Stackforge Modules
● cinder glance horizon keystone neutron nova
openstack swift
● Other
● apache concat firewall inifile memcached mysql
qpid rsync ssh stdlib sysctl vlan xinetd

MySQL
● Create Users
● Create Databases
● Configure Access

Keystone
● PKI default token format
● Admin / Demo / Per Service users
● Services / Endpoints created
● Compulsory Service

Glance
● Api / Registry same host
● Populated with cirros image

Nova
● Controller / Service per Host
● 1+ nova compute hosts
● libvirt kvm / qemu
● tunes compute nodes (virtual-host profile)

Networking
● nova FlatDHCP
● nova VLAN
● Neutron
● L2 plugins
● Linuxbridge
● openvswitch
● Namespace enabled kernel

Cinder
● Backends :
● lvm/iscsi
● gluster (havana)
● nfs
● Lvm/iscsi Creates Sample 20G cinder-
volumes VG
● Volume/Scheduler/API same host only

Swift
● Single proxy
● Multiple storage hosts
● Multiple storage devices
● Configurable ring

Horizon
● Http / Https options
os-client
● Client libraries / cli's installed
● Admin and demo rc files

Nagios
● Nrpe
● Monitors
● Load
● disk usage (/var)
● Keystone
● Glance
● Nova
● Cinder
● Swift

Other
● Iptables Filters
● sebools
Coming Soon
● Heat
● Ceilometer

More Info
● Packstack --help
● http://openstack.redhat.com/
● http://openstack.redhat.com/Quickstart
● https://github.com/stackforge/packstack
● Me
● Email : derekh@redhat.com
● Twitter : @bethehokie
● Freenode : derekh