Tripleo Deploy Flow

Report
Deploying Openstack with
Tripleo
Tom Howley, Dublin, May 2014
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OpenStack® Professional Services
We’re hiring…
Linux System Engineers (Galway) – all levels
Architects, System Integrators (Dublin)
hp.com/jobs
search for OpenStack Ireland
Or contact our Recruiting lead: [email protected]
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Introductions
Tom Howley
• Member of the Helion CloudOS Core
Engineering team
• Member of the HP Cloud Cinder/Bock
Engineering team
• Member of the IAAS Shared Services /
High Availability team
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I hope to cover
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HP Helion Public Cloud Deployment
Motivation for Tripleo
Tripleo Overview
Diskimage Builder
os-collect/refresh/apply-config suite
Heat and Heat templates
The Developer Experience
Current Challenges + Future Work
(Openstack Atlanta Update)
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What is Openstack?
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Lots of moving parts to install, maintain, upgrade
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We used Chef for HP Public Cloud
See http://wiki.opscode.com/display/chef/Home
Git Repo
Chef Server
Download + Apply
Cookbook Recipes
Node 1
Pull/Push
Chef files
Cookbooks,
Roles,
Environments,
Data bags,
Node Settings
Node 2
Node 3
Node 4
Management Desktop:
git + knife
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Chef
Node
Role
Recipe
Resource
Install RabbitMQ
RMQ recipe
host-0001
Configure users,
vhosts…
RabbitMQ
HA Server
Install pacemaker
HA recipe
Write corosync
conf file
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Some limitations of Chef
1. Single-node view
• Ok, there are environments – just a global set of attributes
• Tend to think in node roles
2. Lacks orchestration
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Not easy to describe inter-node dependencies
Required for install and upgrades (ideally of the rolling variety)
3. Tendency towards snowflakes
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No facility for roll-back
4. Does not do baremetal install
5. Common set of cookbooks/recipes upstream?
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Stackforge Chef repo: AT&T, IBM, Rackspace + others
but other repos do exist
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Lots of moving parts to install, maintain, upgrade
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Who in their right mind would use
Openstack to deploy Openstack?
And where does this gratuitous recursion end?
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Enter Tripleo
From https://wiki.openstack.org/wiki/TripleO#TripleO_-_OpenStack_on_OpenStack
“TripleO is a program aimed at installing, upgrading and operating OpenStack clouds
using OpenStack's own cloud facilities as the foundations - building on nova, neutron
and heat to automate fleet management at datacentre scale (and scaling down to as
few as 2 machines).”
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Tripleo Breakdown of Deployment Lifecycle
Provisioning
Software
Configuration
Nova-BM/
Ironic
diskimage
-builder
os-apply
-config
MaaS
Crowbar
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State
os-refresh
-config
Juju
~~~ Chef ~~~
Razor
~~~ Puppet ~~~
Manual
Install
Stand-alone Chef, Puppet, etc
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Orchestration
Heat
Crowbar
Tripleo Deployment
• Heat stack defines the cluster
• Heat drives the Nova API to deliver images to machines
• Virtual machines in developer test
• Bare metal Nova for CI/CD and production deployment
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Diskimage Builder Golden Images
• Images created independent of deploy with Internet access
• Encapsulate a known good set of software
• Excludes configuration and persistent state
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Deploy never needs Internet access
Equivalent of packages at cluster level
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these are placed on a separate state partition
/ is then mounted read-only
Golden image per node type
Configuration occurs at install (for invariants) or deploy time (for local config)
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Undercloud vs. Overcloud
OpenStack (KVM)
OpenStack (KVM)
OpenStack (Bare metal)
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Nova cannot reliably run two different
hypervisors in one cloud today
So we run two+ clouds:
→ the undercloud, a bare metal cloud that
runs on, and owns, all the hardware
→ the overcloud, a regular VM based cloud
running as a tenant on the bare metal
cloud
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We have cloud for users to create VMs
bm = baremetal node
oc-control bm
nova
rabbitmq
os-col/
ref/app
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© Copyright 2014 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice
oc-compute bm
glance
novacompute
mysql
heat
HP Confidential
os-col/
ref/app
We have cloud for users to create VMs
oc-control bm
nova
rabbitmq
os-col/
ref/app
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oc-compute bm
glance
novacompute
mysql
heat
HP Confidential
user
vm
os-col/
ref/app
We have cloud for users to create VMs
oc-control bm
nova
rabbitmq
os-col/
ref/app
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oc-compute bm
glance
novacompute
mysql
heat
HP Confidential
user
vm
os-col/
ref/app
user
vm
How do we bring up the user’s cloud?
undercloud bm
keystone
oc-control bm
ironic
glance
os-col/
ref/app
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nova
rabbitmq
heat
os-col/
ref/app
© Copyright 2014 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice
oc-compute bm
glance
novacompute
mysql
heat
HP Confidential
user
vm
os-col/
ref/app
user
vm
How do we bring up the undercloud?
Head Node
undercloud bm
oc-control bm
oc-compute bm
seed vm
keystone
keystone
ironic
ironic
nova
glance
novacompute
glance
glance
os-col/
ref/app
mysql
user
vm
heat
os-col/
ref/app
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rabbitmq
heat
os-col/
ref/app
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heat
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os-col/
ref/app
user
vm
So lets see Tripleo in action
And I don’t mean a demo!
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Tripleo Deploy Flow - Image build
Build the seed image
elements
ubuntu
nova
glance
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disk image
builder
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seed
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Tripleo Deploy Flow - Image build
Build undercloud and overcloud images
elements
ubuntu
nova
glance
disk image
builder
seed
undercloud
overcloudcompute
overcloudcontrol
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Tripleo Deploy Flow - Seed
Launch the Seed
Head Node
seed vm
launch
seed
kvm
keystone
ironic
glance
seedstack
json
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os-ref/
app
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heat
Tripleo Deploy Flow - Undercloud
Upload undercloud image to Glance on seed
Head Node
seed vm
keystone
undercloud
glance
os-ref/
app
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ironic
heat
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Tripleo Deploy Flow - Undercloud
Launch undercloud heat stack via heat engine on seed
Head Node
seed vm
keystone
ironic
glance
undercloud
heat template
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create undercloud heat stack
os-ref/
app
heat
© Copyright 2014 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice
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Tripleo Deploy Flow - Undercloud
Heat launches the undercloud node
Head Node
seed vm
undercloud bm
pxe boot
keystone
ironic
glance
os-col/
ref/app
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heat
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Tripleo Deploy Flow - Undercloud
Transfer undercloud image over iscsi connection
Head Node
seed vm
keystone
undercloud bm
ironic
undercloud
glance
oscollect
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heat
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Tripleo Deploy Flow - Undercloud
Reboot undercloud, os-collect reads configuration meta-data
Head Node
seed vm
keystone
undercloud bm
keystone
ironic
undercloud
glance
glance
os-col/
ref/app
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ironic
read meta data
heat
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os-col/
ref/app
heat
Tripleo Deploy Flow - Undercloud
Undercloud os-refresh/os-apply configures + launches services
Head Node
seed vm
keystone
undercloud bm
keystone
ironic
undercloud
glance
glance
os-col/
ref/app
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ironic
os-col/
ref/app
heat
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heat
Tripleo Deploy Flow - Overcloud
Upload overcloud images to Glance on undercloud
Head Node
seed vm
keystone
overcloudcompute
overcloudcontrol
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undercloud bm
keystone
ironic
undercloud
glance
glance
os-col/
ref/app
ironic
os-col/
ref/app
heat
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heat
Tripleo Deploy Flow - Overcloud
Launch overcloud heat stack via heat engine on undercloud
Head Node
seed vm
keystone
undercloud bm
keystone
ironic
undercloud
glance
glance
overcloud
heat template
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create overcloud heat stack
os-col/
ref/app
ironic
os-col/
ref/app
heat
© Copyright 2014 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice
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heat
Tripleo Deploy Flow - Overcloud
Heat launches the overcloud nodes via Nova/Ironic API
Head Node
undercloud bm
oc-control bm
pxe boot
seed vm
keystone
keystone
ironic
ironic
glance
glance
os-col/
ref/app
heat
os-col/
ref/app
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heat
© Copyright 2014 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice
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oc-compute bm
Tripleo Deploy Flow - Overcloud
Transfer overcloud images over iscsi connection
Head Node
undercloud bm
oc-control bm
oc-compute bm
seed vm
keystone
keystone
ironic
ironic
overcloudcontrol
glance
glance
os-col/
ref/app
heat
os-col/
ref/app
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overcloudcompute
heat
© Copyright 2014 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice
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Tripleo Deploy Flow - Overcloud
Reboot overcloud nodes, os-collect reads configuration meta-data
Head Node
undercloud bm
oc-control bm
oc-compute bm
seed vm
keystone
keystone
ironic
ironic
nova
glance
novacompute
glance
glance
os-col/
ref/app
mysql
heat
os-col/
ref/app
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rabbitmq
heat
os-col/
ref/app
© Copyright 2014 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice
heat
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os-col/
ref/app
Tripleo Deploy Flow - Overcloud
Overcloud os-refresh/os-apply configures + launches services
Head Node
undercloud bm
oc-control bm
oc-compute bm
seed vm
keystone
keystone
ironic
ironic
nova
glance
novacompute
glance
glance
os-col/
ref/app
mysql
heat
os-col/
ref/app
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rabbitmq
heat
os-col/
ref/app
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heat
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os-col/
ref/app
We now have a working cloud for users!
Head Node
undercloud bm
oc-control bm
oc-compute bm
seed vm
keystone
keystone
ironic
ironic
nova
glance
novacompute
glance
glance
os-col/
ref/app
mysql
heat
os-col/
ref/app
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rabbitmq
heat
os-col/
ref/app
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heat
HP Confidential
os-col/
ref/app
We now have a working cloud for users!
User creates a VM in our cloud
Head Node
undercloud bm
oc-control bm
oc-compute bm
seed vm
keystone
keystone
ironic
ironic
nova
glance
novacompute
glance
glance
os-col/
ref/app
mysql
user
vm
heat
os-col/
ref/app
39
rabbitmq
heat
os-col/
ref/app
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heat
HP Confidential
os-col/
ref/app
We now have a working cloud for users!
and another one….
Head Node
undercloud bm
oc-control bm
oc-compute bm
seed vm
keystone
keystone
ironic
ironic
nova
glance
novacompute
glance
glance
os-col/
ref/app
mysql
user
vm
heat
os-col/
ref/app
40
rabbitmq
heat
os-col/
ref/app
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heat
HP Confidential
os-col/
ref/app
user
vm
Tripleo Components
Quick review of DIB, os-collect/apply/refresh-config and Heat
© Copyright 2014 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice.
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Diskimage Builder
An image build proceeds through a set of hooks: pre-install.d, install.d, etc.
An image build is parameterised by including elements
Each element includes one or more hook files: install.d/20-rabbitmq-server
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Which are simple executable files (typically bash, some python)
Elements can depend on other elements
Handle multiple OS's by either conditional code or abstracting out a common
interface e.g. install-packages replaces yum/apt calls.
Most things get cached in ~/.cache/image-create
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Diskimage Builder
tripleo-image-elements
apache2
fedora-rdo-icehouse
keepalived
nova
pypi-openstack
bm-dnsmasq
fedora-rdo-icehouse-repository
keystone
nova-api
qpidd
boot-stack
geard
mariadb
nova-baremetal
rabbitmq-server
ceilometer
glance
mariadb-dev
nova-compute
remove-serial-console
ceilometer-agent-central
haproxy
memcached
nova-ironic
salt-master
ceilometer-agent-compute
heat
mysql
nova-kvm
salt-minion
ceilometer-agent-notification
heat-api
mysql-common
novnc
seed-stack-config
ceilometer-api
heat-cfntools
mysql-dev
ntp
snmpd
ceilometer-collector
heat-engine
mysql-mariadb-compat
openstack-clients
stackuser
check_mk-agent
horizon
mysql-migration
openstack-db
swift
cinder
hosts
nagios3
openstack-ssl
swift-proxy
cinder-api
icinga-core
network-utils
os-apply-config
swift-storage
cinder-lio
icinga-web
neutron
os-collect-config
sysctl
cinder-tgt
__init__.py
neutron-dhcp-agent
os-refresh-config
tempest
cinder-volume
iptables
neutron-network-node
os-svc-install
tripleo-cd
common-venv
ironic
neutron-openvswitch-agent
pip-and-virtualenv
tripleo-heat-templates
debian-mirror
ironic-api
neutron-ovs-cleanup
pip-manifest
tripleo-staging
devstack
ironic-conductor
neutron-server
postfix
tuskar
diskimage-builder
jenkins
nfs-server
pypi-mirror
use-ephemeral
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Diskimage Builder
Anatomy of an element
os-refresh-config
os-apply-config
install
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rabbitmq element – install section
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Diskimage Builder
To create an image using dib tool
• disk-image-create -a $(IMAGE_ARCH) -o $(IMAGE_NAME) $(IMAGE_ELEMENTS)
• disk-image-create -a i386 -o $TRIPLEO_ROOT/overcloud-compute ubuntu novacompute nova-kvm neutron-openvswitch-agent os-collect-config dhcp-allinterfaces
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Diskimage Builder
Developer/Build Machine
elements
ubuntu
diskimage builder
chroot env
cinder
rabbitmq-server
qcow images
seed
Execute:
install.d\10-supportphysical-hardware
install.d\20-rabbitmqserver
install.d\73-cinder
….
undercloud
overcloudcompute
overcloudcontrol
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os-apply-config
mustache = logic-less templates, snippet of cinder.conf sample:
[DEFAULT]
{{#cinder.verbose}}
verbose={{cinder.verbose}}
{{/cinder.verbose}}
{{#cinder.debug}}
# Print debugging output (set logging level to DEBUG instead
# of default WARNING level). (boolean value)
debug={{cinder.debug}}
{{/cinder.debug}}
auth_strategy = keystone
sql_connection={{cinder.db}}
….
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os-apply-config
This input hash:
{
“cinder”: {
“verbose”: False,
“debug”: True,
“db”: “mysql://cinder:[email protected]/cinder”
}
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os-apply-config
Produces this cinder.conf
[DEFAULT]
verbose=False
# Print debugging output (set logging level to DEBUG instead
# of default WARNING level). (boolean value)
debug=True
auth_strategy = keystone
sql_connection=mysql://cinder:[email protected]/cinder
….
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os-*-config
• os-collect-config grabs new metadata from heat
• os-refresh-config:
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•
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Quiesce fragile services
(If needed) os-apply-config applies config files
(If needed) Reboot
Ensure required services are running and/or restarted
Perform any migrations (such as seeding initial data)
Notify heat that the deploy is complete on the machine
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os-*-config
rabbitmq element (recap)
os-refresh-config
os-apply-config
install
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Heat
Orchestration Service for Openstack
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Structured declarative multi-node/multi-service orchestration
Uses templating mechanism
Controls complex group of cloud resources
Based on AWS CloudFormation
Intention to support TOSCA (Topology and Orchestration Specification for Cloud
Applications)
REST API
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Heat
Stack: Group of connected resources (VMs, Volumes, Networks, ..)
controllerConfig:
Properties:
config:
cinder:
db: mysql://cinder:[email protected]/cinder
Type: OS::Heat::StructuredConfig
controller0Deployment:
Properties:
config:
Ref: controllerConfig
server:
Ref: controller0
Type: OS::Heat::StructuredDeployment
controller0:
Properties:
flavor:
Ref: OvercloudControlFlavor
Type: OS::Nova::Server
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Heat
Launch a stack
heat stack-create overcloud
-f overcloud.yaml
-P “AdminPassword=unset”
-P ...
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Heat
And if all goes well
[email protected]:~/tripleo/tripleo-incubator/scripts# heat stack-list
+--------------------------------------+------------+-----------------+----------------------+
| id
| stack_name | stack_status
| creation_time
|
+--------------------------------------+------------+-----------------+----------------------+
| edaeb91b-8202-45cd-97d6-0c05eb4b5935 | overcloud
| CREATE_COMPLETE | 2014-05-07T15:56:04Z |
+--------------------------------------+------------+-----------------+----------------------+
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Heat
In a little more detail
[email protected]:~/tripleo/tripleo-incubator/scripts# heat resource-list overcloud
+------------------------------+--------------------------------+-----------------+----------------------+
| resource_name
| resource_type
| resource_status | updated_time
|
+------------------------------+--------------------------------+-----------------+----------------------+
| NovaCompute0
| OS::Nova::Server
| CREATE_COMPLETE | 2014-05-07T15:56:04Z |
| controllerMgmt0
| OS::Nova::Server
| CREATE_COMPLETE | 2014-05-07T15:56:05Z |
| NovaCompute1
| OS::Nova::Server
| CREATE_COMPLETE | 2014-05-07T15:56:07Z |
| NovaComputeConfig
| OS::Heat::StructuredConfig
| CREATE_COMPLETE | 2014-05-07T15:56:08Z |
| SSLConfig
| OS::Heat::StructuredConfig
| CREATE_COMPLETE | 2014-05-07T15:56:08Z |
| SwiftConfig
| OS::Heat::StructuredConfig
| CREATE_COMPLETE | 2014-05-07T15:56:08Z |
| NovaComputePassthrough
| OS::Heat::StructuredConfig
| CREATE_COMPLETE | 2014-05-07T15:56:09Z |
| controller0
| OS::Nova::Server
| CREATE_COMPLETE | 2014-05-07T15:56:09Z |
| BlockStorageConfig
| OS::Heat::StructuredConfig
| CREATE_COMPLETE | 2014-05-07T15:56:11Z |
| RabbitCookie
| OS::Heat::RandomString
| CREATE_COMPLETE | 2014-05-07T15:56:11Z |
| controllerMgmtPassthrough
| OS::Heat::StructuredConfig
| CREATE_COMPLETE | 2014-05-07T15:56:11Z |
| controllerPassthrough
| OS::Heat::StructuredConfig
| CREATE_COMPLETE | 2014-05-07T15:56:11Z |
| NovaCompute0Passthrough
| OS::Heat::StructuredDeployment | CREATE_COMPLETE | 2014-05-07T15:59:42Z |
......
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Developer Experience
Remember our Tripleo Stack?
Head Node
undercloud bm
oc-control bm
oc-compute bm
seed vm
keystone
keystone
ironic
ironic
nova
glance
novacompute
glance
glance
os-col/
ref/app
mysql
user
vm
heat
os-col/
ref/app
58
rabbitmq
heat
os-col/
ref/app
© Copyright 2014 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice
heat
HP Confidential
os-col/
ref/app
user
vm
Developer Experience
For developers, everything is virtual (and we get vms in vms!)
Dev Workstation
undercloud vm
oc-control vm
oc-compute vm
seed vm
keystone
keystone
ironic
ironic
nova
glance
novacompute
glance
glance
os-col/
ref/app
mysql
user
vm
heat
os-col/
ref/app
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rabbitmq
heat
os-col/
ref/app
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heat
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os-col/
ref/app
user
vm
Developer Experience – devtest.sh
Calls the following scripts
1.
2.
3.
4.
5.
6.
7.
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devtest_variables.sh
devtest_test.sh
devtest_ramdisk.sh
devtest_seed.sh
devtest_undercloud.sh
devtest_overcloud.sh
devtest_end.sh
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Developer Experience
Some Issues
1. devtest run takes time
• Typically about 1 hour+
• Even overcloud-only updates can take 20-30 mins
2. Now, our deploy tool has many moving parts
•
•
DIB, Heat, os-col/ref/app-config, Nova, Glance, Neutron, Cinder, Swift, …
A bug in any one can bring down a devtest run
3. Anyone find the terminology confusing?
•
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undercloud/overcloud…..and I’ve even heard “underseed” mentioned somewhere
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Developer Experience – Addressing these issues
•
•
•
•
•
•
•
•
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Speed-up (per-developer site)
Apt mirror
Pypi mirror
Squid proxy for everything else..
Repeatability/Consistency
Repeated full Tripleo deploy (VM and Baremetal) + test -> Good SHA1’s
Repeated full Tripleo deploy (VM and Baremetal) + test -> Good images
Developer can use SHA1’s and Images in devtest run
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And on the terminology
Consensus seems to be that overcloud/undercloud leads to confusion
Deploy BM Cloud (was: undercloud)
• A cloud running on baremetal that deploys baremetal machines
• Deploy KVM/LXC/Docker cloud (was: undercloud)
•
•
Production/Test/$USECASE cloud (was: overcloud)
•
•
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A cloud running on baremetal that deploys KVM/LXC/Docker containers
A cloud with its hypervisors on a Deploy BM cloud and its control plane etc on a Deploy
BM/KVM/LXC/Docker cloud
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OR…
Opinions welcome!
Deployer Cloud (was: undercloud)
• BM deployer cloud, KVM deployer cloud, Docker deployer cloud,…
• Workload Cloud (was: overcloud)
• Production workload cloud, Test workload cloud, …
•
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Current Challenges + Future work
Based on Openstack Atlanta Summit
•
•
•
•
•
•
•
•
•
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Ongoing improvements in repeatability/consistency of devtest run
Ironic (instead of Nova-BM) touted as general improvement for this and for scaling
Heat
Re-architected to be more event-driven (addresses scaling issues of polling)
Use of observer process + taskflow worker processes
Better handling of resource failures within a stack
Hooks to be written: Chef, Salt, Ansible, PowerShell
Action-aware config resource for alignment with TOSCA (e.g. suspend/resume actions) +
support for custom actions
Storing Heat Template catalogs in Glance
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Current Challenges + Future Work
Based on Openstack Atlanta Summit
General support for Upgrade story
• Still immature in this area
• Support in Tripleo for HA degraded to single state
• QuintupleO?
•
•
Support for multiple Hypervisors on one node
•
•
•
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Use Public Cloud VMs for seed, undercloud, overcloud
E.g. KVM and Ironic
Upstream CI – Baremetal?
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HP Confidential
Acknowledgements
Thanks to Robert Collins and Clint Byrum for supporting material!
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© Copyright 2014 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice
HP Confidential
OpenStack® Professional Services
Did I mention we’re hiring…
Linux System Engineers (Galway) – all levels
Architects, System Integrators (Dublin)
hp.com/jobs
search for OpenStack Ireland
Or contact our Recruiting lead: [email protected]
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HP Confidential

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