OpenStack Summit Boston 2017. Presentation about OpenStack and SDN Cotnrollers (OpenContrail and OpenDaylight).

1. The Pain, the Gain
and the Lessons Learned
installation > integration > configuration > walkthrough

2. Agenda
• General
• Introductions and Credits
• What is SDN
• Benefits of SDN
• Popular SDN Controllers
• Industry Trends
• Lab Deployment Demo

3. General
What to Expect:
This is a tutorial-style presentation for beginners
No focus on specific features of any SDN Controller
Focus on integration with DevStack
Assumptions:
Basic understanding of OpenStack
Out of scope:
Vendor specifics
Protocol details (we won’t go into OpenFlow and other protocols)
Avoid discussions about why SDN or which controller is the best
Disclaimer:
We work for Ericsson but we are here as enthusiastic members of
OpenStack community and die-hard believers of development and
collaboration in and via open source

4. Konstantin Komaristy
Syed Moneeb Javed
Special thanks to:
Tim Irnich and Francois Lemarchand of Ericsson,
who have much more subject knowledge
Introductions and Credits

5. What is SDN
The Open Networking Forum (ONF) defines SDN as
follows:
“Software-Defined Networking (SDN) is an emerging
architecture that is dynamic, manageable, cost-
effective, adaptable, making it ideal for the high-
bandwidth, dynamic nature of today's applications. This
architecture decouples the network control and
forwarding functions enabling the network control to
become directly programmable and the underlying
infrastructure to be abstracted for applications and
network services. The OpenFlow protocol is a foundational
element for building SDN solutions.”

6. Traditional Networks
• Hardware-oriented
• Static in nature
• Configured manually
• Distributed control plane lacks scale
• Management plane can use proprietary
implementations

7. Traditional Networks

8. Benefits of SDN
• Centralized management and control planes
• Control and data plane can scale
independently
• Improved interoperability
• Programmability of network devices
• Ability to use commodity hardware
• Facilitate migration to software-based
networking
• Enables adoption of scalable and dynamic
applications

9. Popular SDN Controllers
 There are many SDN Controllers
https://www.sdxcentral.com/sdn/definitions/sdn-controllers/sdn-
controllers-comprehensive-list/
 One very familiar to us is Neutron
 Today we discuss:
o OpenContrail
o OpenDaylight

10. Our Mini Lab
Intel NUC5i5RYK
4 CPU, 16 GB RAM, 250 GB M.2 SSD
Ubuntu 17.04 Server 64-bit
basic system tools
virtualization host
ssh server
x11-apps
virt-manager
edit /etc/default/grub
GRUB_CMDLINE_LINUX="intel_iommu=on"
update-grub
reboot
cat /sys/module/kvm_intel/parameters/nested
Y
modinfo kvm_intel | grep nested
parm: nested:bool

11. OpenContrail Architecture Diagram

12. OpenContrail Control Flows

13. Reference: Software-Defined Networking (SDN) WITH OpenStack
OpenContrail Control Flows

14. Installation
Ubuntu 14.04.4 LTS Server 64-bit AMD
15 GB RAM, 4 CPU, 70 GB disk
minimal install, ssh server
vi /etc/default/grub
GRUB_CMDLINE_LINUX="intel_iommu=on kvm-intel.nested=1"
update-grub
reboot
cat /proc/cmdline
BOOT_IMAGE= ... ro intel_iommu=on kvm-intel.nested=1
virt-host-validate
QEMU: Checking for hardware virtualization : WARN (Only emulated CPUs are available,
performance will be significantly limited)
QEMU: Checking for device /dev/vhost-net : PASS
QEMU: Checking for device /dev/net/tun : PASS
LXC: Checking for Linux >= 2.6.26 : PASS

15. Installation
apt-get -y purge isc-dhcp-client isc-dhcp-common resolvconf
rm /etc/resolv.conf
vi /etc/resolv.conf
nameserver 192.168.1.1
search 192.168.1.1
apt-get -y install git
git clone https://github.com/Juniper/contrail-installer.git
git clone https://github.com/openstack-dev/devstack -b stable/mitaka
export CONTRAIL_DIR=/home/ubuntu/contrail-installer
export DEVSTACK_DIR=/home/ubuntu/devstack
cd contrail-installer
cp samples/localrc-all localrc
edit localrc
CONTRAIL_REPO_PROTO=https # uncomment
NB_JOBS=4 # set to number of CPU available
MULTI_TENANCY=True # add
Reference: https://github.com/Juniper/contrail-installer

16. Build OpenContrail
./contrail.sh build # 1 hour 12 minutes
./contrail.sh install # 29 minutes
./contrail.sh configure # fast
./contrail.sh start # fast

17. Build DevStack
cd ~/devstack
cp ~/contrail-installer/devstack/lib/neutron_plugins/opencontrail lib/neutron_plugins/.
cp ~/contrail-installer/devstack/samples/localrc-all localrc
edit localrc:
HOST_IP=192.168.1.129 # set to match
PHYSICAL_INTERFACE=eth0 # set to match
MULTI_TENANCY=True # add
disable_service c-sch # add
disable_service c-api # add
disable_service c-vol # add
disable_service tempest # add
./stack.sh # after 30 sec, error: “packages have unmet dependencies”
sudo apt-get -f install # force
./stack.sh # after 20 min, error: “object has no attribute '__version__' ”
edit line 29 in file /usr/local/lib/python2.7/dist-packages/openstack/session.py
from:
DEFAULT_USER_AGENT = "openstacksdk/%s" % openstack.__version__
to:
DEFAULT_USER_AGENT = "openstacksdk/%s" % openstack

18. Build DevStack
./unstack.sh # 15 sec
./stack.sh # after 30 min got error “550 Failure creating NET_ID for private”
cd ~/contrail-installer
./contrail.sh stop # 1 min
sudo reboot
cd ~/contrail-installer
./contrail.sh start
cd /opt/stack/noVNC
git checkout v0.6.0
git branch
* (detached from v0.6.0)
master
cd ~/devstack
./stack.sh # 8 min

19. DevStack Dashboard

20. OpenContrail GUI

21. And then there is ODL …

22. OpenDaylight Architecture Overview
• Microservices based architecture
• Platform Independent
• At parity with Neutron Reference
Implementation in OpenStack
Reference: *opendaylight.org

23. OpenDaylight Architecture Overview
Reference: http://5g-crosshaul.eu/wp-content/uploads/2016/10/UC3M_5tonic_SdnOdlDay_19Oct2016.pdf

24. Reference: https://wiki.opendaylight.org/images/d/d8/ODL-arch-B.pdf

25. Reference: Isaku Yamahata -- https://www.youtube.com/watch?v=I1OP8OSYb2c

26. Installation
Ubuntu 17.04 LTS Server 64-bit AMD
15 GB RAM, 4 CPU, 40 GB disk
minimal install, ssh server
apt-get -y purge isc-dhcp-client isc-dhcp-common resolvconf
rm /etc/resolv.conf
vi /etc/resolv.conf
nameserver 192.168.1.1
search 192.168.1.1
apt-get -y install git
sudo useradd -s /bin/bash -d /opt/stack -m stack
sudo echo "stack ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
sudo su - stack
git clone https://git.openstack.org/openstack-dev/devstack
cd devstack/
cp samples/local.conf .

27. Installation
edit local.conf as described here:
https://github.com/openstack/networking-odl/blob/master/devstack/README.rst
set to match:
HOST_IP=192.168.1.65
FLAT_INTERFACE=ens3
ODL_PROVIDER_MAPPINGS=${ODL_PROVIDER_MAPPINGS:-br-ex:ens8}
FLOATING_RANGE=192.168.1.96/27
PUBLIC_NETWORK_GATEWAY=192.168.1.65
pay attention to:
ODL_RELEASE=boron-0.5.3-SR3
ODL_NETVIRT_KARAF_FEATURE=odl-neutron-service,odl-restconf-all
ODL_NETVIRT_KARAF_FEATURE+=,odl-aaa-authn,odl-dlux-all
ODL_NETVIRT_KARAF_FEATURE+=,odl-mdsal-apidocs,odl-l2switch-all
ODL_NETVIRT_KARAF_FEATURE+=,odl-netvirt-openstack
ODL_NETVIRT_KARAF_FEATURE+=,odl-neutron-logger
ODL_BOOT_WAIT_URL=restconf/operational/network-topology:network-topology/
enable_service (one per line): dstat g-api g-reg key mysql n-api n-cond n-cpu n-crt n-novnc
n-sch placement-api placement-client q-dhcp q-meta q-svc rabbit tempest
disable_service (one per line): c-api c-vol c-sch

28. Installation
./stack.sh # 20 min
=========================
DevStack Component Timing
=========================
Total runtime 1187
run_process 31
test_with_retry 112
apt-get-update 3
wait_for_service 31
pip_install 167
apt-get 12
=========================
This is your host IP address: 192.168.1.65
Horizon is now available at http://192.168.1.65/dashboard
Keystone is serving at http://192.168.1.65/identity/
The default users are: admin and demo
The password: nomoresecret
DLUX is now available at http://192.168.1.65:8181/index.html
The user: admin
The password: admin

29. DevStack Dashboard

30. DLUX - Topology

31. DLUX - Nodes

32. DLUX – Yang UI

33. DLUX – Yang Visualizer

34. Our Mini Lab
sudo virsh list --all
Id Name State
---------------------------------------------------------
11 odl running
13 devstack_opencontrail running

35. Industry Trends

36. OpenContrail: Vendors/Operators

37. OpenDaylight: Vendors/Operators
Reference: https://www.opendaylight.org/membership

38. Other Useful info
• Meet the experts at OpenStack Summit
• ODL HA (Clustering):
http://docs.opendaylight.org/en/latest/getting-started-
guide/common-features/clustering.html

39. Errors running ./stack.sh
 run 'apt-get -f install' to correct unmet dependencies
 AttributeError: 'module' object has no attribute '__version__'
 Edit line 29 in the file /usr/local/lib/python2.7/dist-
packages/openstack/session.py
 sudo vi /usr/local/lib/python2.7/dist-packages/openstack/session.py
 From:
 DEFAULT_USER_AGENT = "openstacksdk/%s" %
openstack.__version__
 To:
 DEFAULT_USER_AGENT = "openstacksdk/%s" % openstack
 And start over:
 ./unstack.sh
 ./stack.sh