Introduction into High density deployments using Weblogic Multitenancy

1. OGh Oracle Fusion Middleware Experience 2016
Jaap Poot, 16 februari 2016
High density deployments using
Weblogic Multitenancy

2. Jaap Poot
Principal Oracle Consultant
Since feb 2013 @
Fusion Middleware
Exalogic
ODA
OVM
Linux
DBA
2
Introduction
jaap.poot@amis.nl
https://nl.linkedin.com/in/jpoot
https://technology.amis.nl/
http://www.fmwadmin.com/

3. 3
Weblogic Multitenancy
Key concepts
• Tenants
• Domain partition
• Resource Groups
• Resource Group Template
• Virtual Targets
• Deployment Scope
Oracle Traffic Director
Virtual Server 1
Managed Server/Cluster
Partition 1
Virtual
Target 1
Resource Group
App
App
JMS
Data
Source
JNDI
Partition 2
Virtual
Target 2
Resource Group
App
App
JMS
Data
Source
JNDI
Container Database
PDB 1 PDB 2
Virtual Server 2

4. 4
Weblogic Multitenancy

5. 5
Weblogic Multitenancy
Consolidation

6. 6
Weblogic Multitenancy
Consolidation
• Move from dedicated domains to Multitenant domains
• Less management of
– Hardware/VM’s
– OS
– JVM
– Domains
• Optimal use of resources
• No increase in response times
(According to Oracle)
Domain
Admin
Server
MS1
MS2
MSxx
App
Domain
Admin
Server
MS1
MS2
MSxx
App
Domain
Admin
Server
MS1
MS2
MSxx
App
Domain
Admin
Server
MS1
MS2
MSxx
Partition
App
Partition
App
Partition
App

7. Domain
Admin
Server
MS1
MS2
MSxx
App
Domain
Admin
Server
MS1
MS2
MSxx
App
Domain
Admin
Server
MS1
MS2
MSxx
App
7
Weblogic Multitenancy
Consolidation
Domain
Admin
Server
MS1
MS2
MSxx
App
Domain
Admin
Server
MS1
MS2
MSxx
App
Domain
Admin
Server
MS1
MS2
MSxx
App
Domain
Admin
Server
MS1
MS2
MSxx
App
Domain
Admin
Server
MS1
MS2
MSxx
App
Domain
Admin
Server
MS1
MS2
MSxx
App
Domain
Admin
Server
MS1
MS2
MSxx
App
Domain
Admin
Server
MS1
MS2
MSxx
App
Domain
Admin
Server
MS1
MS2
MSxx
App
Domain
Admin
Server
MS1
MS2
MSxx
Partition
App
Partition
App
Partition
App
Domain
Admin
Server
MS1
MS2
MSxx
Partition
App
Partition
App
Partition
App
Domain
Admin
Server
MS1
MS2
MSxx
Partition
App
Partition
App
Partition
App
Domain
Admin
Server
MS1
MS2
MSxx
Partition
App
Partition
App
Partition
App

8. 8
Weblogic Multitenancy
Portability for DevOps

9. 9
Weblogic Multitenancy
Portability for DevOps
• Transition apps from Dev to Production environments
• No application changes needed
• Fast startup/shutdown
• Container like packaging
• Load balancer integration
Domain
Admin
Server
MS1
MS2
MSxx
Partition
App
Partition
App
Partition
App
Production
Domain
Admin
Server
MS1
MS2
MSxx
Partition
App
Partition
App
Partition
App
Dev

10. 10
Weblogic Multitenancy
Portability for DevOps
• Export and Import Partitions
• Via FMW Control, Console, WLST or REST
• Sample WLST command
– exportPartition(partitionName, expArchPath, [includeAppsNLibs], [keyFile])
– Provide replacement attributes
• <partitionName>-attributes.json in the same directory as Partition Archive file
• Replace partition properties, JDBC, JMS, and other resources in resource groups
– importPartition(archiveFileName, [partitionName], [createNew], [keyFile])

11. Domain
Admin
Server
MS1
MS2
MSxx
Partition
App
Partition
App
Partition
App
Dev
• Transition apps from Dev to Production environments
• Without any application change or redeployment
11
Weblogic Multitenancy
Portability for DevOps
Domain
Admin
Server
MS1
MS2
MSxx
Partition
App
Partition
App
Partition
App
Domain
Admin
Server
MS1
MS2
MSxx
Partition
App
Partition
App
Partition
App
Domain
Admin
Server
MS1
MS2
MSxx
Partition
App
Partition
App
Partition
App
Export Import
Export Import
Export Import
Test
Acceptance
Production
Change attributes as needed

12. 12
Weblogic Multitenancy
Portability for DevOps
Domain
Admin
Server
MS1
MS2
MSxx
Partition
App
Partition
App
Partition
App
On premise
Domain
Admin
Server
MS1
MS2
MSxx
Partition
App
Partition
App
Partition
App
Cloud
Export -> Import to the Cloud
As soon as Oracle Java Cloud Service
provides WebLogic 12.2.x

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Weblogic Multitenancy
Isolation

14. 14
Weblogic Multitenancy
Isolation
• Memory and CPU isolation at the JVM level
– Resource Consumption Management (RCM)
– Oracle JDK 8u40
• Virtual Target per partition for application access
• Dedicated JNDI tree for resource isolation
• Workmanager per partition for thread management
• Security realm per partition possible
• Data can be segregated with PDB’s
– PDB’s are not required!
• Per-partition management
Oracle Traffic Director
Virtual Server 1
Managed Server/Cluster
Partition 1
Virtual
Target 1
Resource Group
App
App
JMS
Data
Source
JNDI
Partition 2
Virtual
Target 2
Resource Group
App
App
JMS
Data
Source
JNDI
Container Database
PDB 1 PDB 2
Virtual Server 2

15. 15
Weblogic Multitenancy
Isolation
JVM (JDK 8u40+)
Partition 1
App App JMS
Data
Source
Resource Group JNDI
Partition 2
App App JMS
Data
Source
Resource Group JNDI
Partition 3
App App JMS
Data
Source
Resource Group JNDI
Partition 4
App App JMS
Data
Source
Resource Group JNDI

16. 16
Weblogic Multitenancy
Components

17. 17
Weblogic Multitenancy
Components
Oracle Weblogic ServerOracle
Traffic Director
Oracle
Coherence
Oracle
Database
Partition 1
Virtual
Target 1
App App JMS
Data
Source
Partition 1 Pluggable
database 1
Resource Group JNDI
Partition 2
Virtual
Target 2
App App JMS
Data
Source
Partition 2 Pluggable
database 2
Resource Group JNDI

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Weblogic Multitenancy
Components Specified
• Oracle Traffic Director
– Optional
– Provides Load balancing
– Installed in separate or with WebLogic in single domain
– Creating a WebLogic MT Partition automatically creates a OTD Partition
• Virtual Target
– A virtual target can be used by only one partition or domain
– One or more virtual targets per resource group
– A virtual target can be used by many resource groups within a partition
– Route by host name and/or URI prefix and/or port number
• Domain Partition
– Portion of a WebLogic domain
– Dedicated to running application instances and resources
– Can be separately managed

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Weblogic Multitenancy
Components Specified
• Resource Groups
– Separate group of deployable applications, libraries, jms servers and queues, data
sources
– Can be derived from a Resource Group Template (See below)
– Override resource settings as needed when derived
– Create at Domain or Partition level
• Resource Group Templates
– Provides a collection of deployable resources
– Don’t have targets
– Can be referenced by multiple Resource Groups

20. 20
Resource Consumption
Management
• Resource Consumption Management is introduced in JDK 8u40
– Only with G1 Garbage collector
• Enable Resource Consumption Management
– $DOMAIN_HOME/bin/startWeblogic.sh
– #JAVA_OPTIONS="-XX:+UnlockCommercialFeatures -XX:+ResourceManagement -
XX:+UseG1GC ${SAVE_JAVA_OPTIONS}"
• Supported resources
– FileOpen: The number of open file descriptors in use by a partition
– HeapRetained: The amount of heap (in MB) retained/in use by a partition
– CpuUtilization: The percentage of CPU time utilized by a partition with respect to the
available CPU time of the WebLogic process

21. 21
Resource Consumption
Management – Policy Types
• Triggers
– Notify
• Notify system administrator that a threshold has been reached
– Slow
• Reducing the thread-usage time for the partition
– Fail
• Fails resource consumption requests – Only applicable for Open Files
– Shutdown
• Inititate shutdown of a partition
• Fair Share
– Allocate a percentage of the available resource for the partition
– All resources available when there is no contention

22. 22
Resource Consumption
Management - example

23. 23
Domain to Partition Conversion
Tool – DPCT
• Migrates a WebLogic Server Domain to a Domain Partition
• Supports version 10.3.6, 12.1.2, 12.1.3 or 12.2.1
• Archive containing the resources can be used as input for importPartition
• Create your own overrides file to adjust attributes
• DPCT is available for download from OTN
• Video demonstration by Steve Button
– https://youtu.be/D1vQJrFfz9Q

24. 24
Weblogic Multitenancy
Live Migration
• Part of Continuous availability (separate license required)
• Move running partition Resource Groups
• Eliminates application downtime for planned events
• Targets are automatically transferred by OTD

25. 25
Weblogic Multitenancy
Live Migration
Oracle
Traffic Director
Partition 1
Cluster 1
Partition 1
App App JMS
Data
Source
Resource Group JNDI
Cluster 2
Partition 1
App App JMS
Data
Source
Resource Group JNDI
1. Migrate API is called
2. Partition/Resource Group starts on
new hosts
3. Sessions are replicated to new
hosts
4. New origin server pool added to
OTD configuration
– Old pool used for sticky requests to
old pool only
– New pool used for all new requests
5. Graceful shutdown called on
partition/resource group on original
hosts
6. Virtual Target configuration updated
with new cluster only

26. 26
Weblogic Multitenancy
License information
• Oracle WebLogic Server Enterprise Edition and WebLogic Suite Options
– Oracle WebLogic Server Multitenant includes the following components:
• Oracle Traffic Director
• Oracle WebLogic Server Multitenant Domain Partitions and integrated constructs including Virtual Targets,
Resource Groups, Resource Consumption Managers
• Oracle WebLogic Coherence Grid Edition Option
– Oracle WebLogic Server Continuous Availability includes the following components:
• Oracle Traffic Director
• Oracle WebLogic Server Zero Downtime Patching
• Oracle WebLogic Server Cross Domain XA Transaction Recovery
• Oracle WebLogic Server Domain Partition Live Migration
• Oracle WebLogic Coherence Grid Edition Option
• Oracle Enterprise Manager Site Guard
• Oracle Traffic Director is NOT a separate licensed product!
http://docs.oracle.com/cd/E55108_01/doc.1213/e56762/wlsuite_options.htm#CJAIADEI

27. 27
WebLogic Multitenancy
Limitations
• WebLogic Multitenancy does not support
– Oracle Web Service Manager
– SOA Suite
– Application Development Framework (ADF)
– WebCenter
– Oracle Service Bus
– Oracle Enterprise Scheduler
– WebLogic SCA

28. 28
Roadmap

29. 29
Weblogic Multitenancy
Demo
(If time permits)

30. 30
Questions?

31. 31