1) The document discusses Dell's OpenStack architecture for enterprises, with Keith Tobin and Greg Jacobs presenting on their experience with OpenStack and Dell solutions.
2) It outlines the design goals of meeting enterprise performance expectations while providing high availability, reliability, and automatic recovery from failures.
3) The solution stack presented includes Dell servers, networking, and storage as well as OpenStack, SUSE Linux, Crowbar, Neutron, Ceph, RabbitMQ, and Percona for deployment, networking, storage, messaging, and database services.
2. Speaker Profiles
Keith Tobin
Greg Jacobs
• Dell Cloud Architect
• Dell Network Architect
• Located in the Dell Cloud Center of
Excellence in Dublin, Ireland
• 20 years working as a network
architecture and solutions specialist
• Over two decades of software,
platform and cloud development
• Network evangelist and packet head
• Organizer for OpenStack Ireland
• Loves all things OpenStack and
Cloud
2
OpenStack Architecture for the Enterprise
Services
3. Design Goals
• Design an OpenStack architecture to run both enterprise and cloud
applications
• Meet enterprise performance expectations for VM’s, networking and storage
• Zero downtime on the control layer
• No data loss in the event of a single node failure
• Must be durable, reliable and highly available
• Must automatically recover after a fault situation has been fixed
• Minimize management tasks
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OpenStack Architecture for the Enterprise
Services
4. Solution Stack
Dell Private Managed Cloud
Solution
Enstratius
Dell Multi-Cloud Manager
OpenStack
CEPH on R720
R720
C6100
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OpenStack Architecture for the Enterprise
Force10
SonicWall
Servers
Security
Cloud Services
Crowbar
SUSE Linux
Networking Physical Layer
R620
OpenStack
Titanium
Storage
Deployment
SUSE Linux
Tested Qualified Solution
SecureWorks
Managed
Services
6. Deploying OpenStack with Crowbar Is Easy
• Crowbar boots and installs from ISO on a management node (server)
• Provides user with web UI for configuration and operations management
• Discovers all potential targets (servers) automatically
• Performs hardware configuration
– BIOS configuration
– Performs updates to BIOS and firmware
• Installs OS on targets
• Deploys OpenStack from a set of configuration modules called barclamps
6
OpenStack Architecture for the Enterprise
Services
15. Neutron (Single Networking Node)
Controller 01
Controller 02
Compute 01
Compute 03
Keystone
Keystone
Nova
Nova
Glance
Glance
MySQL
MySQL
Compute 02
Compute 04
etc…
etc…
Nova
Nova
Network 01
Neutron API
L3 Agent
OVS Agent
DHCP Agent
Internet
15
OpenStack Architecture for the Enterprise
Services
16. Neutron (Separate Networking Nodes)
Controller 02
Controller 03
Compute 01
Compute 02
HAProxy
HAProxy
HAProxy
L3 Agent
L3 Agent
Quagga
Quagga
Quagga
DHCP Agent
DHCP Agent
Neutron API
Neutron API
Neutron API
OVS Agent
OVS Agent
Neutron
Scheduler
Neutron
Scheduler
Neutron
Scheduler
Other
OpenStack
Services
Other
OpenStack
Services
OpenStack
Services
Compute 03
Compute 04
L3 Agent
L3 Agent
DHCP Agent
DHCP Agent
OVS Agent
OVS Agent
Controller 01
Ect….
Other
Internet
16
OpenStack Architecture for the Enterprise
Services
20. MySQL Single Server (Normal Operation)
Application
DB Server
Data
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Openstack Architecture for the Enterprise
Services
21. MySQL Single Server (Failed)
Application
DB Server 1
(Active)
Data
21
Openstack Architecture for the Enterprise
Services
22. MySQL Single Server (Failed)
• Disadvantage
• Single point of failure
Application
DB Server 1
(Active)
Data
22
Openstack Architecture for the Enterprise
Services
24. MySQL Active/Passive Failover (Failed Node)
Active/Passive Failover (Normal Operation)
Disadvantages
• Inactive Server
• Limits scale
• Reduces the potential
workload processing
ability of the solution by
half
• Async replication has
potential for data
inconsistencies across
server nodes in fault
situations
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Openstack Architecture for the Enterprise
Application
DB Server 1
DB Server 2
DB Server 2
(Active)
(Failed)
(Passive)
(Active)
Async Replication
Data
Data
Services
26. MySQL With DRDB (Normal Operation)
Disadvantages
• Inactive server
• Limits scale
• Reduces the potential
workload processing
ability of the solution
by half
Application
DB Server 1
DB Server 2
(Failed)
Server Not Available !
Event
Data
Data
Event
Confirmed
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Openstack Architecture for the Enterprise
Services
29. MySQL Multi-Master Cluster (Failed Node)
Application
01
Application
02
Load balancer
DB
Server 1
DB
Server 2
Data
Data
DB
Server 3
Data
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Openstack Architecture for the Enterprise
Services
30. MySQL Async Replication
• No guarantee that data
will be consistent across
all nodes at any point in
time
Openstack Architecture for the Enterprise
Server N
Data
30
Server 1
Data
Services
31. MySQL Single Thread replication
Processor
C1
Openstack Architecture for the Enterprise
C3
C4
C5
31
C2
C6
C7
C8
Services
32. MySQL Multi-Master Cluster
Application
01
Disadvantages
• At any point in time there
is no guarantee that data is
in a consistent state within
the cluster
• One thread allocated for
replication tasks
Application
02
Load balancer
DB
Server 1
DB
Server 2
Data
Data
DB
Server 3
Data
32
Openstack Architecture for the Enterprise
Services
34. Percona MySQL Cluster
Capability
Synchronous Replication
Data Consistency
Parallel Applying on All Nodes
Automatic Node Provisioning
Multi-Master
34
Openstack Architecture for the Enterprise
Services
36. Data Consistency
Controller
Controller
Server
DB 1
DB 2
DB 3
Capability
Data
Data
Data
Synchronous Replication
Data Consistency
Parallel Applying on All
Nodes
At any point in time data is always
consistent across all nodes in the cluster
36
Openstack Architecture for the Enterprise
Automatic Node
Provisioning
Multi-Master
Services
37. Parallel Applying on All Nodes
Processor
C1
C2
C3
C4
C5
C6
C7
C8
Capability
Synchronous Replication
Data Consistency
Parallel Applying on All
Nodes
Automatic Node
Provisioning
Multi-Master
37
Openstack Architecture for the Enterprise
Services
38. Automatic Node Provisioning
Controller
DB 1
New Node
Controller
DB 4
Join Cluster
Data
Join Cluster
Data
Capability
Cluster
Controller
DB 2
Data
Synchronous Replication
Controller
DB 3
Data
Data Consistency
Parallel Applying on All
Nodes
Automatic Node
Provisioning
Multi-Master
38
Openstack Architecture for the Enterprise
Services
39. Multi-Master Cluster
Application
01
Application
02
Dynamic Load balancer
Capability
Controller
DB 1
Controller
DB 2
Synchronous Replication
Data Consistency
Data
Data
Controller
DB 3
Data
39
Openstack Architecture for the Enterprise
Parallel Applying on All
Nodes
Automatic Node
Provisioning
Multi-Master
Services
43. Thank you
Chat with Keith and Greg
@ the Dell booth
Keith Tobin Greg Jacobs
Cloud Architect
43
Network Architect
OpenStack Architecture for the Enterprise
Services