PLNOG16: Network architectures for cloud-native applications, Nicolai van der Smagt

1. Networking cloud-native applications :: PLNOG 16
Nicolai van der Smagt
Cloud Solutions Architect

2. We are Infradata
We are backed by a multi-billion euro private equity group
We value innovation and best-of-breed
We are headquartered in the Netherlands
We are a high growth SP integrator
We have customers around the globe
We are highly skilled people

3. What are cloud-native applications?

4. First platform: Mainframe computing

5. Second platform: Client - Server computing

6. Third platform:
Cloud computing

7. Cloud-native apps are 3rd platform apps –
Container-based delivery
Containers Virtual Machines

8. Cloud-native apps are 3rd platform apps –
Microservices application architecture
Web
Server
Web
Server
Web
Server
Data-
base
Data-
base
Data-
base
Content
DNS
Load
Balance
Session
Store
Authen-
tication
Licen-
sing
Web Tier
App Tier
Database Tier
3rd platform – microservices2nd platform – monolithic arch

9. Cloud-native apps are 3rd platform apps –
Fault tolerant applications on fragile infrastructure
Web
server
Web
server
Web
server
Load
balancer
Web
Server
Web
Server
Web
Server
Web
server
Web
server
Web
server
Load
balancer
Web
Server
Web
Server
Web
Server
Web
server
Web
server
Web
server
Load
balancer
Web
Server
Web
Server
Web
Server
1/18 = 5% loss of capacity and
any active connections

10. Cloud-native apps are 3rd platform apps –
Ephemeral application infrastructure –
automated, agile scaling
Web
Server
Web
Server
Web
Server
Data-
base
Data-
base
Data-
base
Content
DNS
Load
Balance
Session
Store
Authen-
tication
Licen-
sing
Data-
base
Data-
base
Web
Server
Web
Server
Web
Server
Web
Server
COMPUTE
NODE 1
COMPUTE
NODE 2
COMPUTE
NODE 3

11. Cloud infrastructure –
Hardware commoditization
HP DL-380
Dell R730
SuperMicro SuperServer 6000
Cisco UCS M240
X86
Lenovo X240
Fujitsu RX2540
Oracle X5-2z
Huawei RH2285

12. Cloud infrastructure –
Virtualization

13. WAN
Cloud networking –
Architecture / fabrics
VM
ESX
VM
ESX
VM
KVM
SRV
VM
KVM
VM
KVM
VM
KVM
VM
ESX
SRV
VM
ESX
VM
ESX
VM
ESX
Overlay
⌉ L3 virtual networks
⌉ Active/Active
⌉ Independent
Endpoints
⌉ ESX
⌉ KVM
⌉ Bare metal
⌉ Routers
⌉ …

14. Underlay fabric
⌉ Built on proven tech (mini
version of Internet)
⌉ L3 (IP) only
⌉ Ultra simple
⌉ Load-balancing via ECMP
⌉ Fast convergence via BGP
⌉ Fine-grained EBGP policies
⌉ Linear scaling
⌉ Fault tolerance
CORE
ACCESS
AGGREGATION
COMPUTE
SPINE
LEAF

15. Overlay fabric
L3 Network
L3 Network
Physical Topology Logical Topologies
⌉ Enables multi-tenancy
⌉ Distributed routing
⌉ Distributed security
⌉ Software-defined
⌉ Enables infrastructure-as-code
⌉ Signalled with XMPP/BGP/OF
Router/
Firewall
L3 Network L3 Network

16. Data Center infrastructure orchestration
Openstack architecture

17. Data Center infrastructure orchestration
Kubernetes architecture

18. Running legacy and cloud-native together

19. Kubernetes + Openstack networking using Opencontrail

20. Kubernetes + Openstack networking using Opencontrail
Control plane:
Opencontrail,
Openstack,
Kubernetes

21. Kubernetes + Openstack networking using Opencontrail
Data plane:
Opencontrail
vRouters

22. Kubernetes + Openstack networking using Opencontrail
Data plane:
Opencontrail
vRouters
L3 Gateways

23. Signaling

24. Signaling: BGP

25. Signaling: XMPP

26. Signaling: REST

27. Kubernetes + Openstack networking using Opencontrail

28. Kubernetes + Openstack networking using Opencontrail

29. Kubernetes + Openstack networking using Opencontrail
Tunnel encaps:
MPLS over GRE
(RFC4023)

30. Kubernetes + Openstack networking using Opencontrail
Tunnel encaps:
MPLS over GRE
(RFC4023)
MPLS over UDP
VXLAN

31. Kubernetes + Openstack networking using Opencontrail
Tunnel encaps:
MPLS over GRE
(RFC4023)
MPLS over UDP
VXLAN

32. Kubernetes + Openstack networking using Opencontrail
Tunnel encaps:
MPLS over GRE
(RFC4023)
MPLS over UDP
VXLAN

33. Overlay fabric
L3 Network
L3 Network
Router/
Firewall
L3 Network L3 Network
Physical Topology Logical Topologies
Seamless connection of BMS (legacy systems), VMs
(Openstack or vSphere) and containers (Kubernetes)

34. nicolai@infradata.eu
@NicolaivdSmagt