Domain Partitions and Multitenancy in Oracle WebLogic Server 12c - Why It's Useful

Raastech, Inc.
2201 Cooperative Way, Suite 600
Herndon, VA 20171
+1-703-884-2223
info@raastech.com
Domain Partitions & Multitenancy in Oracle WebLogic Server 12c
Why It’s Useful
Thursday, May 18, 2017
2:45 - 3:45pm
Session 9
LL10AB

© Raastech, Inc. 2017 | All rights reserved. Slide 2 of 64@Raastech
Agenda
1. Introduction
2. Overview of Oracle WebLogic Server
3. Introducing Multitenancy
4. WebLogic Multitenancy Concepts
5. Isolation
6. Oracle Traffic Director
7. Porting Domains
8. Extending to Oracle Java Cloud Service
9. Managing Downtime
10. Summary

About Me
▪ Ahmed Aboulnaga @Ahmed_Aboulnaga
▪ 18+ years Oracle experience
▪ Oracle ACE, OCE, OCA
▪ Author, Blogger, Presenter, Tweeter

About Raastech
▪ Small systems integrator founded in 2009
▪ Headquartered in the Washington DC area
▪ Specializes in Oracle Fusion Middleware
▪ Oracle Gold Partner
▪ Oracle SOA Specialized

▪ Application servers (i.e., middleware) reside between the frontend
and the backend
▪ The mostly (but not always) host and execute web application code
and web services
Middleware
.

Oracle WebLogic Server
▪ Acquired from BEA in 2008
▪ Industry’s leading Java Enterprise Edition (Java EE) Application server
▪ Replaced Oracle Application Server
▪ Required for almost all Oracle Fusion Middleware products
▪ Provides a standard set of APIs for creating distributed Java
applications that can access a wide variety of services such as
▪ JMS, JDBC, RMI, Web Services, XML, EJB etc.
.

Current Releases
▪ Current release:
▪ Oracle WebLogic Server 12c R2 (12.2.1.2)
▪ Previous releases:
▪ Oracle WebLogic Server 12c (12.1.2 and 12.1.3)
▪ Oracle WebLogic Server 11g (10.3.5 and 10.3.6)
.

Oracle Marketing Speak – WebLogic Server
▪ “New features for lowering cost of operations, improving performance,
enhancing scalability”
▪ “Provides flexibility between on-premise and third-party clouds”
▪ “Increases developer productivity with mobile application
development and maven support”
▪ “Optimized for Oracle Exalogic Elastic Cloud”
▪ “Provides extreme cloud performance, scalability, and elasticity,
unmatched integration with Oracle’s Database 12c including multi-
tenant database support”

Understanding Oracle Fusion Middleware
▪ “Oracle Fusion Middleware” is a misleading term
▪ Used to describe middleware products such as:
▪ Business Intelligence (e.g., OBIEE)
▪ Integration (e.g., SOA Suite, OSB)
▪ WebCenter (e.g., WebCenter Content and Portal)
▪ Identity Management (e.g., Oracle Access Manager)
▪ Monitoring (e.g., OEM Cloud Control)
▪ But many times used (erroneously) to describe a single product:
▪ WebLogic Server

▪ WebLogic Server is the core foundation of all Oracle Fusion
Middleware products (and applications)
WebLogic Server: Foundation for Fusion Middleware

Docker Containers
▪ Light, extremely quick startup, increased density, portable
App
Physical Server
Host OS
Hypervisor
Guest
OS
Guest
OS
Guest
OS
bin/lib bin/libApp
App
Physical Server
Host OS
Docker Engine
bin/lib bin/lib
bin/lib
App
App
App
App

Oracle Database Multitenancy
▪ PDB = Pluggable Database
▪ Portable, increased density, isolated
▪ DBA’s love it
DB
Server
OS
bin/lib bin/libbin/lib
DB DB
Server
OS
bin/lib
DB
PDB PDB PDB

WebLogic Server Multitenancy
▪ Same concept exactly, but at the WebLogic level
▪ WebLogic Server multitenancy is achieved via domain partitions
Domain
Server
OS
bin/lib bin/libbin/lib
Domain Domain
Server
OS
bin/lib
Domain
Partition Partition Partition

Oracle Marketing Speak – Domain Partitions
▪ Consolidate “microcontainers onto an efficient, shared platform”
▪ “Improves your time to market”
▪ “Simplifies movement of workloads to and from the cloud”
▪ “Enables up to 3x hardware consolidation”
▪ “Reduces operating expenses by up to 25%”

Convincing Oracle Marketing Speak
▪ “Increased density”
▪ “Tenant isolation”
▪ “Simplified management”

WebLogic Domain Partitions
▪ New to Oracle WebLogic Server 12.2.1
▪ Think virtualization or multitenancy in WebLogic Server, similar to
pluggable databases in the Oracle Database
▪ Every domain can have 1 or more partitions, each containing its own
apps and resources

New in 12.2.1
▪ Domain Partitions
▪ Resource Groups
▪ Resource Group Templates
▪ Other new features include:
▪ Zero Down Time (ZDT) patching
▪ Via automatic orchestration, retries/rolls back on failure
▪ WebLogic multitenant live partition migration
▪ Move from one cluster to another
▪ Coherence persistence
▪ Cache data persisted to durable storage

Introducing WebLogic Domain Partitions
WebLogic Domain APP
AdminServer
BookingApp
WebLogic Domain ORD
AdminServer
OrderMgmt
WebLogic Domain NEW
AdminServer
OrderReports
JMS JDBC
JMS JDBC
Partition APP
BookingApp
JMS JDBC
Partition ORD
OrderMgmt
OrderReports
JMS JDBC

Domain Partitions
▪ A WebLogic microcontainer
▪ Can create 1 or more partitions
▪ Each partition has its own apps and resources
▪ Can start/stop each partition independently
▪ Each partition can have different security realms
▪ Can assign a different administrator for each partition

Domain Partitions Isolation Boundaries
▪ Applications and their data
▪ JNDI
▪ Security
▪ Runtime MBeans
▪ Work Managers
▪ Logging

Resource Groups
▪ Resource Group = collection of Java EE apps and resources
▪ Examples of resources:
▪ Deployments
▪ Services (JDBC, messaging, persistent stores, etc.)
▪ Targets
▪ Can override resources to customize settings

Resource Groups – Creating
▪ Navigate to Environment > Resource Groups

Resource Groups – Configuring Services

Resource Group Templates
▪ Basically templates of Resource Groups
▪ Overrides:
▪ Can create “overrides” for the resources defined in the resource group
template
▪ Example: JDBC connection information

Targeting
▪ In Pre-12.2.1, applications and resources are targeted to a managed
server or cluster
▪ Resources and applications are grouped into resource groups
▪ The resource group is targeted to a virtual target

Virtual Targets
▪ A virtual target is targeted either to a cluster or a managed server
▪ Each has its own URL mapping
▪ Each has its own separate HTTP server
▪ Which helps avoid context path clashes
http://devhost:8001/PartitionAPP/BookingApp
http://devhost:8001/PartitionORD/OrderManagement

Virtual Targets – Creating

WebLogic Domain Partitions
WebLogic Domain APP
AdminServer
WebLogic Domain NEW
AdminServer
JMS JDBC
Partition APP
JMS JDBC
JMS JDBC
Resource Group
Virtual Target
JMS JDBC
MS1 MS2
MS1 MS2

Some New Terminology
Term Explanation
Microcontainer
General term that defines encapsulated applications
and resources, resources are isolated
Domain Partition –or–
Partition
A WebLogic concept, a microcontainer, a runtime slice
of the WebLogic Domain
Virtual Target
Defines where a partition runs, either on a managed
server or a cluster
Resource Group
Created within a partition, groups resources, targeted
to a virtual target
RCM Resource Consumption Management

How to Enable Isolation
▪ Though a shared domain, partitions must provide for:
▪ Runtime isolation
▪ Security isolation
▪ Administrative isolation
▪ Data isolation
▪ Configure Resource Consumption Managers and Partition Work
Managers

Isolation Types
Isolation Type Explanation
Runtime
Policies allow for usage of heap, CPU time, and open file
descriptors
Security Each partition can have a separate security realm
Administrative Each partition can be managed by different administrators
Data
Each partition has its own dedicated data source, JMS
configuration, and Coherence runtime cache

Resource Consumption Management (RCM)
▪ Helps provide runtime isolation and protection
▪ Set the following JVM arguments to enable WebLogic RCM
-XX:+UnlockCommercialFeatures -XX:+ResourceManagement -XX:+UseG1GC

Triggers
▪ A static constraint for the allowed usage for a resource
▪ Can create boundaries for:
▪ HeapRetained
▪ CpuUtilization
▪ FileOpen
▪ If constraint exceeded, an action is performed:
▪ Notify - obvious
▪ Slow - through work manager settings
▪ Fail - reject requests
▪ Shutdown - stop partition

<domain>
.
.
<resource-management>
<resource-manager>
<heap-retained>
<trigger>
<name>UpThere_4GB</name>
<value>4096</value>
<action>notify</action>
</trigger>
<trigger>
<value>6144</value>
<action>slow</action>
</trigger>
<trigger>
<value>8192</value>
<action>shutdown</action>
</trigger>
.
.
config.xml
Partition 1
8.9 GB
Partition 3
Trigger Example (heap-retained)
Partition 2
3.7 GB
8 GB
4 GB
6 GB
2 GB
Total 30 GB JVM
6.1 GB

Oracle Traffic Director (OTD)
▪ Is a software load balancer
▪ Optional
▪ Separately licensed
▪ WebLogic Server typically fronted by OTD or hardware load balancer
▪ You must set the WebLogic Plug-in Enabled in the WLS Admin
Console
http://www.ateam-oracle.com/wls-plugin-enabled/

Oracle Traffic Director (OTD)
▪ Supports an Active-Active or Active-Passive architecture
▪ Highly recommended on Exalogic
▪ When a server is added to a cluster, traffic is automatically routed to
the new managed server
▪ When a partition is created/imported, traffic routing is automatically
added to OTD configuration

Export a Domain
▪ Can export 11g and 12c domains
▪ Export a domain:
exportDomainForPartition.sh /tmp /u01/mw/user_projects/domains/raastech
▪ Output files are:
raastech-attributes.json
raastech.zip

Import a Domain to a Partition
▪ Run these command to import the domain to a partition:
$MW_HOME/oracle_common/common/bin/wlst.sh
connect('weblogic', 'welcome1', 'http://newhost:7001');
importPartition('/tmp/raastech.zip', 'raastech', true, none);
startPartitionWait(cmo.lookupPartition("raastech"));

Confirm Application
▪ Note URI prefix
▪ Application URL on old domain:
http://devhost:8001/BookingApp
▪ Application URL on new domain partition:
http://devhost:8001/raastech/BookingApp

Introducing the Oracle Java Cloud Service (JCS)
▪ Simply… WebLogic Server on the cloud
▪ Requires the Oracle Database Cloud Service

Migrating to Oracle JCS
1. Migrate the Database
2. Configure the Oracle JCS Environment
3. Migrate the Application

Configure the Oracle JCS Environment
1. Navigate to the Oracle JCS Console
2. Launch the AdminConsole
3. Create data sources, work managers, messaging resources,
cluster, etc.

AppToCloud Healthcheck
▪ Validates on-premise domain and applications prior to moving them
to Oracle JCS
a2c-healthcheck.sh
-oh /u01/app/fmw
-adminUrl t3://devhost:7001
-adminUser weblogic
-outputDir /tmp
.

AppToCloud Export
▪ Exports on-premise domain and applications in preparation to move
them to the Oracle JCS storage container
a2c-export.sh
-oh /u01/app/fmw
-domainDir /u01/user_projects/domain/raastech
-archiveFile raastech.zip
-cloudStorageContainer Storage-Me/MyContainer
-cloudStorageUser myuser
.

AppToCloud Import
▪ Create an Oracle JCS instance with AppToCloud
1. Click Create Service
2. Select Java Cloud Service – AppToCloud
▪ Import application to service instance
1. Click AppToCloud Import
Gotchas
▪ Can only be performed on a
new and unmodified service
instance
▪ Copy AppToCloud JSON to
Oracle Storage Cloud Service
▪ Create service instance with
AppToCloud option
▪ Manually configure properties

Ways to Reduce Downtime
▪ Application:
▪ Redeploy apps
▪ Side-by-side deployment using versions (at a max of 1 previous version)
▪ Infrastructure:
▪ Rolling restarts
▪ Rolling Java patching
▪ Rolling Oracle Home patching
▪ Zero Down Time patching (ZDT)

Thoughts on WebLogic Partitions
▪ Is it really needed?
▪ Would you prefer 2 domains -or- 1 domain with 2 partitions?
▪ Patching considerations
▪ Must upgrade all apps simultaneously
▪ Segregation considerations
▪ Not performance, but rather binaries

Good Stuff
▪ Consolidation of environments
▪ Consolidate smaller or less used apps into a single environment
▪ Replication of environments
▪ Quickly provision replicas of test environments

Benefits of WebLogic Server Multitenancy
▪ Improves density and resource utilization
▪ Environment consolidation
▪ Portability
What is Shared What is Not Shared
Domain Application Data
WebLogic Server Application Configuration
JVM Application Runtime
OS

Disadvantages of WebLogic Server Multitenancy
▪ Does not support most Oracle Fusion Middleware applications
▪ Only supports Java EE applications
▪ Does not support Oracle ADF applications
▪ Does not support applications that depend on Oracle JRF
▪ Shared WebLogic Server and domain will impact upgradeability
▪ Not 100% isolated

WebLogic Microcontainers vs. Docker
▪ Both isolate packaged applications and their resources
▪ Both are portable
▪ Docker works at the OS level
▪ Microcontainers work at the WebLogic level
▪ i.e., Does not exist outside the WebLogic runtime environment
▪ WebLogic 12.2.1 is certified to run on Docker containers
▪ To create your own WebLogic Docker images

References
▪ Domain Partitions for Multi-tenancy in WebLogic Server 12.2.1
https://blogs.oracle.com/WebLogicServer/entry/domain_partitions_for_multi_tenancy
▪ Oracle Fusion Middleware Using WebLogic Server Multitenant
http://docs.oracle.com/middleware/1221/wls/WLSMT
▪ WebLogic Multitenant: Configuring Domain Partitions
https://docs.oracle.com/middleware/1221/wls/WLSMT/config_domain_part.htm#WLSMT585
▪ WebLogic Multitenant: Configuring Resource Consumption Management
https://docs.oracle.com/middleware/1221/wls/WLSMT/config_rcm.htm#WLSMT630
▪ Exporting and Importing Partitions
https://docs.oracle.com/middleware/1221/wls/WLSMT/export_import.htm#WLSMT636
▪ WebLogic Server 12.2.1 – Converting Domains to Partitions (video)
https://www.youtube.com/watch?v=D1vQJrFfz9Q
▪ Migrating a Java EE Application to Oracle Java Cloud Service (tutorial)
http://www.oracle.com/webfolder/technetwork/tutorials/obe/cloud/javaservice/JCS/jcs_migration/jcs_migration.html
▪ Checking the Health of an On-Premise WebLogic Domain
https://docs.oracle.com/en/cloud/paas/java-cloud/jscug/checking-health-premises-weblogic-domain.html
▪ Oracle Java Cloud Service – AppToCloud Tooling
http://www.oracle.com/technetwork/topics/cloud/downloads/java-cloud-apptocloud-3042466.html

Contact Information
▪ Ahmed Aboulnaga
▪ Technical Director
▪ @Ahmed_Aboulnaga
▪ ahmed.aboulnaga@raastech.com

Q&A

Domain Partitions and Multitenancy in Oracle WebLogic Server 12c - Why It's Useful

Empfohlen

Empfohlen

Weitere ähnliche Inhalte

Was ist angesagt?

Was ist angesagt? (20)

Ähnlich wie Domain Partitions and Multitenancy in Oracle WebLogic Server 12c - Why It's Useful

Ähnlich wie Domain Partitions and Multitenancy in Oracle WebLogic Server 12c - Why It's Useful (20)

Mehr von Revelation Technologies

Mehr von Revelation Technologies (10)

Kürzlich hochgeladen

Kürzlich hochgeladen (20)

Domain Partitions and Multitenancy in Oracle WebLogic Server 12c - Why It's Useful