A presentation about moving SOA and WebLogic java workloads to the Oracle Cloud. First delivered by myself & Bruno Neves Alves at the UKOUG Middleware & Integration Special Interest Group in London on 28 September 2017.

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SOA & WEBLOGIC:
LIFT & SHIFT TO THE CLOUD
Simon Haslam
Bruno Neves Alves
eProseed
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Middleware & Integration SIG
28th September 2017, London

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Simon Haslam
Technical Director and Partner
CTO Group
UKOUG volunteer & speaker since 2001
Oracle ACE Director (Middleware & SOA)
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ABOUT US
Bruno Neves Alves
Technical Director and Partner
CTO Group
Presenting at UKOUG since 2014
Specializing in SOA/BPM
22 Oracle Specializations… and counting.

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AGENDA
How SOA/WebLogic on-premises compares to SOACS/JCS
Migration approaches
AppToCloud
CI/CD Pipelines with Developer Cloud Service
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COMPARING
SOA/WEBLOGIC ON-PREMISES
WITH SOACS/JCS
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(RECAP) WHAT IS JCS?
JCS:
– WebLogic Server instances, optionally Oracle Traffic Director instance(s)
– Runs on Oracle infrastructure
• Typically located in Oracle data centres but option for Oracle infra to be in your DC
– “Classic” IaaS with Shared or IP Network
– Base WebLogic (and web tier) platform is provisioned automatically
– You have to keep installation “supportable”
– Subscription based service
• Metered: pay by OCPU (Intel core) per hour or per calendar month
• Unmeted: commit to fixed number of OCPU for a year
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(RECAP) WHAT IS SOACS?
SOACS:
– SOA Suite in various flavours (SOA/OSB/B2B or MFT or Insight Analytics)
– Same as JCS though except behind on some features
• IP Networks on JCS last year, same to SOACS in August 16 release
• Oracle Stack Manager (supported JCS from start, not yet SOACS)
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TERMS (AND A FEW TOOLS!)
Deployment
• Platform to top of app
Provisioning
• Bare metal up to platform
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make
(and many, many more!)
Note: container technologies (e.g. Docker) and DevOps approach are blurring this distinction
Application
Platform
Infrastructure

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SIMPLE JCS COMPARED TO SIMPLE WLS
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• Characteristics:
– Web tier (usually)
– Single-node
– No usually shared storage
optional
OTD
Oracle Cloud software firewall
Adm
Svr
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Mgd
Svr
Reasons for having OTD, even for a single node cluster:
• Enhanced security (OTD has good track record)
• Reduces attack surface (web server cf app server)
• A cluster of 1 can be expanded online later

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MULTI-NODE JCS CF TYPICAL EDG
• Characteristics
– Load balancing & web tier
– Multi-node
– Shared storage
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MULTI-NODE JCS CF TYPICAL EDG
• Load balancing
• OTD in place of OHS
– Second node possible (identical config)
– No multi-case VRRP failover
• Shared storage
– Use JDBC for JMS and JTA
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OTD
optional
OTD
Oracle Cloud software LB
JCS has same WLS topology as EDG
except for admin server failover

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HOW DIFFERENT IS SOACS FROM JCS?
• Pretty much the same
– Underneath it (currently) fully provisions JCS then extends to SOACS
– JCS been available for longer than SOACS
• How is it different?
– Stack Manager is not yet available for SOACS
– Cloud consoles differ (e.g. patching)
– SOACS provisioning is an extra layer on top of JCS so you have fewer options during
provisioning (e.g. can’t change domain name)
• Basically the same though
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PROVISIONING CHOICES COMPARED
• On-premises
– Manual
– DIY-scripted
– General purpose tools, e.g. Puppet + orawls*
– Enterprise Manager Cloud Control MWaaS
• Cloud
– Automated via manual consoles
– Automated via REST APIs
• APIs offer orchestration options (e.g. Stack Manager, 3rd party tools)
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* See my OUGN 17 presentation
https://www.slideshare.net/Veriton/driving-devops-for-oracle-with-the-orawls-puppet-modules

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POST-PROVISIONING FOR EITHER CLOUD OR ON-PREMISES
• Security
– Certificates, security & trust
– Authentication providers
– Probably extra admin users
– VM users (SSH keys etc)
• Shared persistent stores when clustered and state in middle tier
• Next step, deployment… all app level resources, e.g. JDBC, JMS etc
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Note: DR is further work…

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MIGRATION APPROACHES
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WHAT DO WE MEAN BY “LIFT AND SHIFT”?
• Jargon
– ideally a straight transfer from one location to another
– “move” rather than upgrade/migrate/change
• Term is used loosely!
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DATABASE CONSIDERATIONS
Users with a WebLogic tier almost invariably has an
associated Database tier
– Don’t separate Application from Database over high latency links!
➢If you are moving your WebLogic tier you have to co-
ordinate this with a Database move too
➢Exception is stateless middle tiers, such as integration
products like OSB and SOA (SOA if no state)
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DB WLS
WLS
WLS

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ANALOGY
• Compare with how we upgrade on-premises systems:
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In Place
No new target env
Longer downtime
Greater risk
More complex roll-back
Less change in process possible
Side-by-side
Pre-preparation of target env
Switchover so shorter/~0 downtime
Greater cost – two sets of envs
Roll-back = switch back
Changes to topology etc easier
• Lift and shift to Oracle Cloud is comparable to side-by-side
– will almost certainly involve an upgrade or change of version
– approach determines how much of the pre-preparation advantages you have

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TOOLS
• Depends on layer you are moving
– Virtual Machine: could use Oracle Ravello if going to Oracle Cloud
• Nearest thing to true lift and shift – hosts, networks, OS stays the same to WebLogic
– Application migration tools
• AppToCloud – packages up application artefacts and configuration of resources
• Enterprise Manager Cloud Control, or Oracle Virtual Assembly Builder (deceased?),
can introspect platform and generate a model to recreate – working at IaaS layer
though
– Existing automation may already make migration tools unnecessary
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• Side-by-Side provisioning
• Smoke Testing (Connectivity, Backup/Restore, etc)
• Instance drained down
• DB Export from deprecated instance for reporting
• App Resources and Baseline Configuration (Partly
Automated)
• Automatic Deployment of latest artefacts from CI
Artefact Repo
• Final cut-over: shut down composites, switch over
backend, smoke test, switch over DNS, test, bring up
services
• Shutdown and Delete Old Instance
• Ask Oracle Support and CSM to confirm deletion
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SIDE-BY-SIDE MIGRATION EXAMPLE
SOACS 12.1.3, needed new for unmetered 12.2 &
because no SOACS 12.1 to 12.2 upgrade route
v12.2.1
v12.1.3
DBCS
DBCS

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APPTOCLOUD
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APPTOCLOUD OVERVIEW
• AppToCloud tooling released ~Autumn 2016
• Application database migration is separate
• Downloadable java-based tool that you run on your on-prem
Admin Server
• Oracle JCS can create an instance from AppToCloud output
• One-way only: On-premises App -> Oracle Cloud
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STEPS
1. Check pre-requisites (run tool to check)
2. Run health check
3. Export domain to jar file -> upload to Storage cloud
4. Create JCS instance from the file Storage cloud
5. Import app artefacts from the file in Storage cloud
6. Post configuration
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APPTOCLOUD RESTRICTIONS & CONSIDERATIONS
• JCS only
• You need to consider database carefully – various options (e.g. DataGuard) but you
typically want middle & database tiers in same DC at all times
• Your target will always be on WebLogic 12c
– Your app needs to be regression tested against 12c if still on 11g
– Even if you are on 12c JCS has specific versions/patch levels you should check
• Single WebLogic domain with only single cluster allowed in one move
– Migration from multiple source domain clusters is possible but into separate JCS instances
• Source domain cannot be JRF (except for restricted JRF) (there’s no FMW repo
migration). => Rules out SOACS. (imagine dehydration store migration though!)
• Source must be either non-MT or single global MT domain
• Source must be healthy (active deployments, health MS, etc)
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SIMON’S UPGRADE TOOL PARADOX!
“Those with most to benefit from an upgrade tool probably don’t need it!”
- me
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Many
Few
Low
App/env complexity
High
NumberofEnvironments
✓


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DEVELOPER CLOUD SERVICE
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Continuous Delivery to Cloud
Illustration by Nhan Ngo, Product Owner at Spotify on the Continuous Delivery process
described by Jez Humble and David Farley in the Continuous Delivery book

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DEVELOPER CLOUD SERVICE
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Developer

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FUNCTIONALITIES

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FUNCTIONALITIES

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BUILD PIPELINE (BUILD AND DEPLOYMENT)

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On-Prem
Servers
REUSE YOUR EXISTENT ON-PREM ASSETS ON CLOUD
IDEs Cloud
Instances
Task
Management
Code
Review
Development
Automation and Continuous
Integration
Release
Pipeline Management

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SUMMARY
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SUMMARY
• SOACS/JCS compares to well-configured on-premises SOA and WebLogic installation
– Easier, automated provisioning with pre-set sizing & topologies
– All JCS instances include FMW Infra for OPSS etc (so need a DBCS instance)
• Migration options to Cloud
– Side-by-side - clean re-deploy or use a tool
– AppToCloud offers entire domain migration including apps and resources; note cluster restriction
• CI/CD Pipelines with DevCS
– DevCS is mostly pre-integrated with JCS & SOACS
– Free with PaaS so opportunity to adopt modern tooling rather than DIY
– DevCS is easy to set up
– Reuse your existing on-premises CI assets on DevCS smoothly
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3 Membership Tiers
• Oracle ACE Director
• Oracle ACE
• Oracle ACE Associate
bit.ly/OracleACEProgram
500+ Technical Experts
Helping Peers Globally
Connect:
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@oracleace
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oracle-ace_ww@oracle.com