Presentation from IBM InterConnect 2017. Abstract: This session will demonstrate how WebSphere Application Server Liberty and Docker containers make the perfect combination for development and deployment of Java-based microservices. We'll show an end-to-end workflow, starting with creating a new service with the Liberty App Accelerator, local development with the free WebSphere Developer Tools, and then deployment to IBM Containers with the Bluemix DevOps Services.

1. InterConnect
2017
WebSphere Liberty and
IBM Containers:
The Perfect Combination for
Java Microservices
Tom Banks @tom_will_banks
tom.banks@uk.ibm.com
David Currie @dcurrie
david_currie@uk.ibm.com

2. Please note
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Performance is based on measurements and projections
using standard IBM benchmarks in a controlled environment.
The actual throughput or performance that any user will
experience will vary depending upon many factors, including
considerations such as the amount of multiprogramming in
the user’s job stream, the I/O configuration, the storage
configuration, and the workload processed. Therefore, no
assurance can be given that an individual user will achieve
results similar to those stated here.

3. Agenda
Microservices Overview
Why Containers?
Why IBM Bluemix Container Service?
Why WebSphere Liberty?
Demo
Future Direction

4. Microservices
Overview

5. Application architected as a suite of:
Small, independently deployable, services
Built around business capabilities
Each running in its own process
Communicating with lightweight protocols
Microservices: A Definition
Microservice
component
Microservice
component
Microservice
component

6. Pros and Cons
Agility
Runtime scalability
Development scalability
Resilience
Technical heterogeneity
Operational complexity
DevOps skills
Service versioning
Duplicated effort
Increased latency
Fault tolerance
Eventual consistency
Service discovery
End-to-end testing

7. Microservice Premium
http://martinfowler.com/bliki/MicroservicePremium.html

8. Why Containers?

9. Container =
Isolation of virtual
machine +
Startup time and
footprint of
process
Process
PID
IPC
= Namespaces for isolation
CPU
Memory
= Control groups for resource constraint

10. The Docker Advantage
image = standardized packaging mechanism +
meta-data defining externals
layers = shorter build times +
less i/o and disk usage
API = consistent interface for handling logs,
metrics, volumes, networking, …
r/o = optional immutability
registry
server 1
FROM websphere-liberty
COPY app.war /config/dropins
Dockerfile
app.war
Image: app
Docker
Enginedocker build/run
serverwebsphere-
liberty
ubuntu
java
server
ubuntu
java
app.war
Container
server
ubuntu
java
r/w layer
app.warapp

11. Why IBM Bluemix
Container Service?

12. IBM Bluemix
Container Service
Fully-managed hosted service for building and
running containers
Private container registry pre-populated with IBM
images (including WebSphere Liberty)
Volume service for persistent storage
Overlay networking providing non-routed IP
addresses for every container and ability to bind
public IPs
Easily configure and consume services, whether
inside or outside of Bluemix
Scalable groups with integrated load balancing
and auto-recovery

13. Vulnerability Advisor
Ensure that only secure images are
deployed and that they stay secure
Growing capabilities:
July 2015: Policy Violations/
Vulnerable Packages
Nov 2015: Best Practice Improvements
Oct 2016: Security Misconfigurations
Nov 2016: Live Container Scanning
Jan 2017: Integration with IBM X-Force

14. Bluemix Open Toolchains
IBM Bluemix
Container Service
Image Build
Image
Registry

15. Preconfigured
metrics for memory,
CPU and network I/O
Search across
aggregated logs
Monitoring and Logging

16. Why WebSphere
Liberty?

17. Liberty Characteristics
Fast start-up
Minimal footprint
Liberty server package, with or without server
binaries
Simple deployment model
Compose server, application and environment
configuration
Standards based feature function required for
microservices implementation

18. Cloud-native Java
programming model
MicroProfile.io community
MicroProfile 1.0 announced at JavaOne 2016
JAX-RS / JSON-P / CDI
MicroProfile project in Eclipse Foundation
Configuration: environment specific application
configuration from multiple sources with dynamic
updates; implementation based on Netflix
Archaius
Fault Tolerance: timeout, retry, circuit breaker,
fallback and bulkhead pattern; implementation
based on Failsafe
Monitoring: application and runtime metrics
exposed via /metrics
Health Check: application health exposed via
/health
Distributed tracing: proposal for OpenTracing
with Zipkin
Security: Open ID Connect / JWT

19. Best practice is to make available
environmental configuration at deploy time
Easy to embed environment variables in
Liberty server configuration ${env.YYY}
Use Liberty configDropins folder to mount in
additional configuration files at deployment
time; supports dynamic update
Beta feature microProfileConfig-0.1 provides
Java API for application level configuration
Environmental Configuration

20. Liberty App Accelerator
http://wasdev.net/accelerate
<10
Get a Java-based
minutes
microservice that
uses Liberty built
and deployed in

21. Developer images for latest fix
pack available in IBM Bluemix
Container Service registry
latest / javaee7
webProfile6
webProfile7
microProfile
Images kept vulnerability free
Can be upgraded to production
licensed image via license JAR
from Passport Advantage
Images in Bluemix Registry

22. Getting started experience is very
simple: build an image that adds a
WAR file and then run it
Modifying the application only
requires rebuilding and
redeploying the application layer
Running an Application
FROM ibmliberty:webProfile7
COPY app.war /config/dropins/
bx ic build -t app .
bx ic run -d -p 9080 -p 9443 app
.war

23. Liberty kernel image and online
repository of features makes it
possible to build custom images
containing just the features
required by an application
‘Right size’ Images
FROM websphere-liberty:kernel
COPY server.xml /config/
RUN installUtility install --acceptLicense defaultServer

24. Free WebSphere Developer Tools
support running applications from
the Eclipse workspace on a
Liberty instance in a container
Adds REST Connector and
enables security
Provides ability to switch Liberty
server in to debug mode
WebSphere Developer Tools

25. Docker logging enables collection
of SystemOut/SystemErr
Liberty features push messages,
trace, FFDC, HTTP access and
GC logs
logstashCollector
bluemixLogCollector
Liberty dashboards for Kibana
Logging

26. Demo

27. Future Direction

28. Beta available March 20th. Service combines Docker and
Kubernetes to deliver powerful tools, an intuitive user
experience,and built-in security and isolation to enable rapid
delivery of applications all while leveraging Cloud Services
including cognitive capabilities from Watson.
www.ibm.com/cloud-computing/bluemix/containers

29. Intelligent Scheduling Automated rollouts and rollbacks Container Security & PrivacyDesign Your Own Cluster
Self-healing Horizontal scaling Leverages IBM Cloud & Watson Integrated Operational Tools
Service discovery & load balancing Secret & configuration management Simplified Cluster Management Native Kubernetes Experience
IBM Bluemix Container Service

30. Microservice Builder (Beta)
Common OSS architecture
IBM Spectrum Conductor for
Containers
x86 and Power
On Premise Focus
Customer-managed IBM-managed
Common Programming models + Tools + Runtimes
SwiftFAILSAFE
IBM Bluemix Container Service
Bluemix Cloud
Containerized Applications
> bx dev create …

31. Learn More

32. Microservices and Java
• http://wasdev.net/microservices
• http://www.redbooks.ibm.com/red
pieces/abstracts/sg248357.html

33. Play with Microservices
https://game-on.org

34. Questions?

35. Summary
Microservices Overview
Why Containers?
Why IBM Bluemix Container Service?
Why WebSphere Liberty?
Demo
Future Direction

36. Notices and disclaimers
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37. Notices and disclaimers
continued
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38. InterConnect
2017