1. Ease OpenStack : Non-Containerized to Containerized

2. Introduction : -- Surya Prakash Singh (NEC Technologies India Pvt Ltd)
-- Jeffrey Zhang
(99cloud)
-- Duong Ha-Quang
(Fujitsu)

3. Agenda: Evolution of Containers Evolution of Containerized Deployment
Advantages of Containers
Why Migrate ?
Use Cases
Why Containerized with Kolla ?
Future of migration with Kolla
Containerized Analytics
Migration Feasibility
How do we containerize OpenStack
Demo
Q & A

4. Evolution of Containers:
Process Container
2006
1979
2000
2001
2004
2005
2008
2011
RKT
Container Tools
Container Security
LMCTFY
2017
2017
2017
2016
2013
2013

5. Advantages of Containerized Deployment:
Efficient CI
Compatibility and Maintainability
Simplicity and Faster Configuration
Rapid Deployment
Multi Cloud Platform
Isolation
Security
Environment Standardization and Version Control

6. Evolution of containerized deployment:
Packstack
Devstack

7. Why migrate ?

8. Use Cases
Node failure
Maintenance of cloud
Efficient resource use

9. Node Failure Storage failure Network issue Natural disaster
Heating issue on node
Natural disaster

10. Maintenance of DC
Firmware Upgrades
Hardware Upgrades
Kernel Upgrades

11. Resiliency improvement
Efficient Resource use
Cost Reduction
Resiliency improvement
VM1
VM2
VM3 VM VM
VM4
VM5
VM6 VM VM VM VM
VM1
Low network latency
VM6 VM VM VM
Retire VM
Compute Node
Transfer VM

12. Why Containerized with Kolla?
Quick OpenStack Deployment with high availability
Microservice architecture
Easy upgrades
Easy development environment
Different OpenStack releases in single environment

13. Quick OpenStack Deployment
Kolla +
Kolla-ansible

14. Micro-Service Architecture

15. Easy Development Environment
Easy Upgrade
Ocata
Pike
Queens
Easy Development Environment
Horizon
Murano
Heat
Kuryr
Zun
Horizon
Keyston
Glance
Tacker

16. Different OpenStack releases in single environment
One Cloud
Compute Node
Controller Node
Storage Node
Heat
Cinder
Nova
Neutron
Swift Object Storage
Ocata
Pike
Queens

17. Containerized Analytics
Architecture Case Study: Complexity of process migration
Easy
Normal
Difficult
Code
Single Process
Multiple Processes
Self modifying
Configuration
One file
Several Files
Anywhere in FS
Data
Saved at one place
Saved in several Places
Network
HTTP, HTTPS
TCP, UDP
IPSEC, Highly isolated
Installation
Packages, Source
Installer & Understood Configuration
Install.sh
Licensing
Open Source
Proprietary
Restrictive & Proprietary
Recoverability
Easy to Restart
Fails Sometimes
Fails often

18. Type1 Migration Feasibility :
Application on Old-infra
Application on New Infra
Possibility
Performance
Drawbacks
Case1:
Yes
Case2:
Case 1:
Depends on application
Case 2:
n-api DB
Case 1
Docker DB
n-api
Cinder-api OS
H/w OS DB
n-api
Case 2 HW
Docker VM
Hypervisor OS HW

19. Type2 Migration Feasibility :
Application on Old-infra
Application on New Infra
Possibility
Performance
Drawbacks
Case1:
Yes
Case2:
Application dependent
n-api
App2
Case 1
Docker VM
n-api
App2
Hypervisor
H/w
Case 2
n-api
App2 VM
Hypervisor OS
Docker OS HW HW

20. Type3 Migration Feasibility:
Application on Old-infra
Application on New Infra
Possibility
Performance
Drawbacks
Case1:
Yes
Case2:
Application dependent
n-api
App2
Case 1
Docker VM
App2
Hypervisor
H/w
n-api
n-api
App2
Case 2 VM
Hypervisor
H/w
Docker OS HW

21. [Assumption] Future of migration with Kolla
Live migration of services into containers
Cold migration of services into container

22. [Assumption] Non-containerized to containerized execution steps:
Stop Node
Copying Configuration/Data
Start Container of Service
Rollback

23. Non-Containerized Cloud
Flow ~ ~ ~
Docker Hub
Nova API Image
Nova Compute Image
Nova
Nova
Cinder
Nova Conductor Image
Nova Scheduler Image
Cinder
API
Volume
API
Volume
Nova API
Nova Compute
Nova API Container
Nova Compute Container
Backup
Backup
Nova Conductor
Nova Schedule
Nova Conductor Container
Nova Scheduler Container
Stop
Kolla
Start
Swift
Neutron
Swift
Neutron
Proxy
Acc
Proxy
Acc
API
L2/l3
API
L2/l3
Cont
Obj
Cont
Obj
Kolla-Migrator
Copy/Configure
Keystone
Keystone
Api DB
Api DB
Kolla-ansible
Non-Containerized Cloud
Containerized Cloud

24. Way of doing with kolla for OpenStack services:
Control Plane Services
Possible steps of doing
Network Nodes
setup of l3-ha
stop slave,start kolla slave, vrrp restores cluster
stop master, vrrp moves to kolla-based l3 agent
Ironic
copy PXE state /tftboot/ to ironic_pxe volume
Nova
Copy /var/lib/libvirt to volume/container
cgroup set for Qemu
worst case live migration
Data Plane Services
Possible steps of doing
Cinder + LVM/NFS
kill iscid/tgtd start kolla container tgtd/iscsid
Swift
Add swift container wait for rebalance (heavy)
or restart containerized node
Config migration
Possible steps of doing
Config Migration
Current config as override
update log directory
Playbook to diff existing config with kolla-ansible generated
Glance Images
Move contents of /var/lib/glance to glance/volume
Depends on backend

25. How do we Containerize OpenStack
Way of doing with kolla for OpenStack services:
Infra Services
Possible steps of doing
DB + Rabbit MQ
within same db version copy data to docker/volume
worst case backup and restore
Ceph
switch from non-containerized to containerized ceph existing .yml (with some customization may be possible)
external ceph

26. Swift Storage Container
Architecture: Containerization of OpenStack swift service
Adding to existing cloud
Proxy
Swift Cluster
Swift Storage Container
Keystone
Swift storage
Swift storage Ac
Cont Ac
Cont
Obj
Obj
Docker
Ac DB
Cont DB
Obj DB
Virtual Box OS
H/W

27. Migration of OpenStack swift service into container
Expected Operations :
1- Create an Object in non-containerized Swift cluster
2- Add a container as new node addition in swift cluster
3- Wait for rebalancing of swift cluster
4- Access the created object from in partly containerized cloud

28. Challenges Faced in swift service migration:
Heavy data traffic
AIO installation of swift into container
Applying config to Kolla-container

29. Q & A

30. Surya Prakash Singh IRC: spsurya Jeffrey Zhang IRC: Jeffrey4l
Communication
Surya Prakash Singh IRC: spsurya
Jeffrey Zhang IRC: Jeffrey4l
Duong Ha-Quang IRC: duonghq

31. Thank You !!