tecnologias oracle em docker containers on-premise e na nuvem
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Copyright © 2016, Oracle and/or its affiliates. All rights reserved. |
Tecnologias Oracle em Docker Containers: On-premise e CloudSES12234
Bruno BorgesPrincipal Product ManagerOracle Cloud
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•Bruno Borges–Product Manager / Developer Advocate–Oracle Cloud
–Twitter: @brunoborges
Speaker
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Safe Harbor StatementThe following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle’s products remains at the sole discretion of Oracle.
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Program Agenda
Docker Overview
Strategy and Positioning
Docker on Oracle Cloud
Oracle Technology on Docker
Extras
1
2
3
4
5
Copyright © 2016, Oracle and/or its affiliates. All rights reserved. |
Program Agenda
Docker Overview
Strategy and Positioning
Docker on Oracle Cloud
Oracle Technology on Docker
Extras
1
2
3
4
5
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What is Docker?And why should we care?
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Copyright © 2016, Oracle and/or its affiliates. All rights reserved. |
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• Developers care because:– Quickly create ready-to-run packaged
applications– A clean, safe, hygienic, portable runtime
environment– No missing/conflicting dependencies or
packages– Each app runs in an isolated container– Automate testing, integration, packaging– Reduce/eliminate platform compatibility
issues– Cheap/zero cost deployment, with instant
replay and reset
• Administrators care because:– Configure once, run many times– Makes app lifecycle efficient, consistent
and repeatable– Eliminate environment inconsistencies
between development, test, production– Supports segregation of duties– Improve speed and reliability of
continuous integration and deployment– Lightweight containers address
performance, costs, deployment and portability issues
So Why IT Cares About Docker? Why Adopt It?
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What are the Benefits and Use Cases with Docker?• Benefits
– Using containers allows developers and sysadmins to isolate each application, providing specific dependencies for each application
– Docker containers are tiny; they are designed to run a single application– Docker combines filesystem layers to improve re-use between containers– Cost savings on conventional virtualization due to greater density using containers
• Spin off isolated infrastructures/processes within same VM. Better consumption of resources.
• Use Cases– Application Deployment without “dependency hell” of multiple applications– Continuous Integration– Platform-as-a-Service (PaaS)– Development and Test Environment
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How does Docker works?
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Docker
Comparing Docker against LXC and Hypervisors
Hardware Hardware Hardware Hardware
Hypervisor Operating System Operating System Operating System
HypervisorVM 0
OS
bins/libs
apps
VM 1
OS
bins/libs
apps
VM 0OS
bins/libs
apps
VM 1
OS
bins/libs
apps
bins/libsContainer0
bins/libs
apps
Container1
apps
bins/libs
Container0
bins/libs
apps
Container1
apps
Hypervisor Type1 Hypervisor Type2 LXC Docker
CLI REST Dockerfile
volumes
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Docker Architecture 101• Docker Client talks to
Docker Daemon• Client can run on a
same machine or connect remotely
• Docker Registries or Hubs hold images
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Declaratively Build Containers Using Dockerfiles
# Pull from base image of Oracle Linux and install pkgs FROM oraclelinux:7
RUN yum install -y unzip java-1.7.0-openjdk-headless
RUN yum clean all
# Download and extract GlassFish RUN curl -O -L http://bit.ly/glassfish-4_1_zip
RUN unzip glassfish-4_1_zip
# Default CMD upon container execution CMD /glassfish4/bin/asadmin
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Building a container image
[bruno@orcl:~/gf-docker]$ sudo docker build -t glassfish:4.1 –f Dockerfile . Sending build context to Docker daemon Step 0 : FROM oraclelinux:7.0 ---> 5f1be1559ccf Step 1 : RUN yum install -y unzip java-1.7.0-openjdk-headles ---> Running in 7b1583feb2bc Step 2 : RUN curl –O –L http://bit.ly/glassfish-4_1_zip ---> 4abe64ef7934 Step 3 : RUN unzip glassfish-4_1_zip ---> 1ac729d9809a Step 4 : CMD /glassfish4/bin/asadmin ---> Running in 6aab421a83ff Successfully built 8f1106a1d7d0
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Creating and running a container
[bruno@orcl:~]$ sudo docker images REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE glassfish 4.1 8f1106a1d7d0 3 minutes ago 1.081 GB [bruno@orcl:~]$ sudo docker run -ti glassfish:4.1 Use "exit" to exit and "help" for online help. asadmin> start-domain Waiting for domain1 to start ..... Successfully started the domain : domain1 domain Location: /root/glassfish4/glassfish/domains/domain1 Admin Port: 4848 Command start-domain executed successfully. asadmin>
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Accessing a service/application running within a container
[bruno@orcl:~]$ sudo docker ps CONTAINER ID IMAGE CREATED STATUS
9ebf7544f8e9 glassfish:4.1 3 minutes ago Up 3 minutes
[bruno@orcl:~]$ sudo docker inspect 9ebf7544f8e9 | grep IPAddress "IPAddress": "172.17.0.8",
[bruno@orcl:~]$ firefox http://172.17.0.8:4848 [bruno@orcl:~]$ ifconfig docker0 docker0 Link encap:Ethernet HWaddr 56:84:7a:fe:97:99 inet addr:172.17.42.1 Bcast:0.0.0.0 Mask:255.255.0.0
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One Application Instance Per Container
• Running multiple instances of the same application or different applications will make scheduling very difficult
• Expose very few ports per container (preferably one)
Physical Host
Operating System
Container
App
Container
App
Just One Per Container
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Docker Ecosystem
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Docker Hub
Docker Swarm
Docker Compose
Docker Machine
Docker Cloud
Docker Registry
Docker Datacenter
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Copyright © 2016, Oracle and/or its affiliates. All rights reserved. |
Program Agenda
Docker Overview
Strategy and Positioning
Docker on Oracle Cloud
Oracle Technology on Docker
Extras
1
2
3
4
5
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Oracle Docker Support Enables Customers to Keep Investments on Our Products While Moving Forward with a New Trend
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Oracle joined OCI – Open Container Initiative• Governance structure for the
express purpose of creating industry standards around container formats and runtime.
• Customers can commit to container technologies w/o worrying on being locked up.
• Oracle joined in 2015.– blogs.oracle.com/solaris/entry/
oracle_joins_the_open_container
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Containers Are The New Virtualization TrendFour main use cases
Hardware
Operating System
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
Hardware
Operating System
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
Hardware
Operating System
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
Hardware
Operating System
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
Hardware
Operating System
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
Hardware
Operating System
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
Hardware
Operating System
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
Hardware
Operating System
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
ContainerApp
Application Packaging
Continuous Integration DIY PaaS
Infrastructure Consolidation
Neatly package applications and supporting environment in immutable, portable containers
All changes to an app are contained in one immutable container image. Container is tested and deployed as one atomic unit
Get infrastructure utilization up to 100% (vs 5-10% with VMs) due to over-subscription of resources and near bare metal performance.
Build a simple PaaS by wiring up containers to a load balancer. New code, patches, etc pushed as new immutable containers.
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Stop Manually Fixing ProblemsIn no case should an administrator fix issues by hand. Should be 100% automated
Auto-scaling will automatically launch a new container on new hardware as load dictates
Hardware FailureExample: motherboard failed
Auto-scaling will automatically launch new containers as load dictates
Network FailureExample: switch failed
Health checking should fail and the container will be culled. Auto-scaling will automatically launch a new container as load dictates
System Software FailureExample: kernel panic
Application Software FailureExample: bad file permissions
Fix the source (your application, your container, your Dockerfile, etc) and re-deploy your entire application
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Economical Incentives• Containers let customers isolate environments, processes, applications,
within the same hardware or VM without having to create another VM.• It helps reduce virtualization costs• Increased density• Speeds delivery of packaged solutions
– Container images are much smaller than traditional VMs images. – Full Guest OS is not needed.
• Speeds development cycle– Onboarding new developers is much faster with predefined development environments
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Program Agenda
Docker Overview
Strategy and Positioning
Docker and Oracle Cloud
Oracle Technology on Docker
Extras
1
2
3
4
5
Copyright © 2016, Oracle and/or its affiliates. All rights reserved. |
How Do You Deploy Containers?The emerging space of container orchestration
What Do Container Orchestration Solutions Do?• Map containers back to physical hosts,
taking into account user-defined placement rules, the utilization of each host, and the needs of each container. Can be very complex
• Set up overlay networking, firewalls, ensure network QoS, etc
• Auto-scaling• Local and external load balancers• Service registry / discovery
HostHost
HostHost
HostHost
HostHost
HostHost
Container• Inventory
Microservice
• AcmeCo• v1.2
Container• Inventory
Microservice
• AcmeCo• v1.2
Container• Inventory
Microservice
• AcmeCo• v1.2
Container• Inventory
Microservice
• AcmeCo• v1.2
Container• Inventory
Microservice
• AcmeCo• v1.2
Container• Inventory
Microservice
• AcmeCo• v1.2
Container• Inventory
Microservice
• AcmeCo• v1.2
Container• Inventory
Microservice
• AcmeCo• v1.2
Container• Inventory
Microservice
• AcmeCo• v1.2
Container
App
Container• Inventory
Microservice
• AcmeCo• v1.2
Container• Inventory
Microservice
• AcmeCo• v1.2
Container• Inventory
Microservice
• AcmeCo• v1.2
Container• Inventory
Microservice
• AcmeCo• v1.2
Container• Inventory
Microservice
• AcmeCo• v1.2
Container• Inventory
Microservice
• AcmeCo• v1.2
Container• Inventory
Microservice
• AcmeCo• v1.2
Container• Inventory
Microservice
• AcmeCo• v1.2
Container• Inventory
Microservice
• AcmeCo• v1.2
Container
App
Many Containers
HostHost
HostHost
HostHost
HostHost
HostHost
Many Hosts
Docker Swarm
Emerging space. Solutions are very early and lack any real notion of an application. Still very much infrastructure-focused
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DIY
Docker on Oracle Cloud – The Big Picture
Container CS
App. Container CS
JavaNode.js
Any container workload
PHPPythonRubyC++Go
Compute Cloud Service
• Application Container Cloud Service
• Run Cloud Native applications with ease
• Container Cloud Service
• Oracle-provided container orchestration tooling
• Compute Cloud Service
• DIY Docker orchestration
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Oracle Container Cloud ServiceProvides Out of the Box Functionality
● Define Resource Pools● Add Private Registries● Administer Users / Groups
● Edit Create New Services● Compose Application Stacks● Deploy Stacks with 1 Click
● Automated Deployment● Multi-Host, Easy Scale Out● Built in Service Discovery
● Integrated Health Checks● Unified Dashboard● Monitoring and Auditing
Configuration Management
Application Deployment
Container Orchestration
Operations Management
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Oracle Application Container Cloud Service
• Deploy Cloud Native applications with ease• Applications run on Oracle Linux inside Docker containers
– Docker image definition and container creation is abstracted from developers
• Stateless Applications– Ephemeral disk– Permanent storage through database or storage service
• Support for patching language runtimes
An open and highly available Docker container-based elastic polyglot Cloud platform
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Docker and Oracle Cloud
• Oracle Cloud provides a large spectrum of solutions for Docker based Microservices architectures
• Three Public Cloud offerings for Docker container based deployments– On Compute CS, with a DIY approach– On Container CS, with an Oracle managed and supported, Cloud Native approach– On Application Container CS, with a seamless Cloud Native application runtime
approach
• Oracle Public Cloud Machine is capable of hosting container based workloads
Summary
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Program Agenda
Docker Overview
Strategy and Positioning
Docker on Oracle Cloud
Oracle Technology on Docker
Extras
1
2
3
4
5
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• Oracle Linux– 5.11, 6.6+, 7.0+
• MySQL Server– 5.5+
• WebLogic Server– 12.1.3, 12.2.1
• Coherence– 12.2.1
• Tuxedo– 12.1.3, 12.2.2
• HTTP Server– 12.2.1
Products Currently Supported inside Docker Containers
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Oracle SolarisNot ready, but actively working on supporting Docker
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Docker on Oracle Solaris
• A native Docker on Oracle Solaris, with similar runtime characteristics as experienced on Linux, would check all of the boxes
• Planning for work to improve in these areas coincided with our noticing a considerable uptick in Docker adoption
• As with OpenStack, participate rather than reinvent• Integration with other container technologies already a goal for the Docker
project
Good timing and well-aligned
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Oracle Linux
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Oracle Linux and Docker• Docker engine binary for OL is built and maintained by OL team• Supports full container lifecycle: build, ship, distribute, and
deployment of applications• Oracle Linux Base images available
– OL 5 – 5.11– OL 6 – 6.6, 6.7– OL 7 – 7.0, 7.1, 7.2
• Support for common OL usage (i.e.: yum package manager)• Support for btrfs for Docker containers filesystems• Small image size
– ~ 70 MB download size– ~ 200MB when extracted
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Docker Binary by Oracle Linux• Binary available on YUM addons repository as docker-engine– Built from upstream sources; Internal builds available for each upstream RC– Specific PRs from upstream are built and tested– Automated QA is run as follows
• Build validation and upstream test suite• Internal validation and product test suites (e.g. MySQL)• OpenStack for Oracle Linux R2 specific test suites
• Runs on OL 6 and OL 7• Docker 1.10+ requires Unbreakable Enterprise Kernel Release 4
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Benefits of Docker on btrfs• Btrfs (B-Tree File System) originally developed at Oracle; now mainline• Copy-on-write filesystem with built-in disk and RAID management• Self-healing built-in though checksums and scrubbing• Most mature filesystem that supports Docker features/performance
– device-mapper is very, very slow– aufs is only supported on Debian/Ubuntu– overlayfs is very new/unstable
• Oracle employs primary btrfs developers
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Advantages of Docker on Oracle Linux• Runs on Oracle Linux 6
– No other EL6-derived distro can run Docker 1.9 or higher– Requires UEK4 which is provided for both OL6 and OL7
• Upstream builds on Oracle Linux 6 and 7– Upstream continuous integration includes Oracle Linux builds
• Supports btrfs in production on both OL6 and OL7– No other EL6-derived distro supports btrfs in production
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WebLogic on Docker
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Certification of WebLogic Running on DockerWLS Version JDK Version Host OS Kernel Docker Version
12.2.1 8
Oracle Linux 6 UEK 3 (3.8.13)
* 1.7+Oracle Linux 7 UEK 3 (3.8.13)
Red Hat Enterprise Linux 7 Red Hat Kernel (3.10)
12.1.3 7 / 8
Oracle Linux 6 UL 5 UEK 3 (3.8.13)
* 1.3.3+Oracle Linux 7 UEK (3.8.13)
Red Hat Enterprise Linux 7 Red Hat Kernel (3.10)
* Docker 1.10+ requires UEK4
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Support and Licensing• Support details on Support Doc ID 2017945.1• Set of Dockerfiles recipes and samples are published on GitHub
– http://github.com/oracle/docker-images/tree/master/OracleWebLogic– No binary images are provided. Customers must build their owns.– No requirement to use samples recipes and scripts from GitHub.
• No licensing change. No CPU partition.– Containers processes run on the host kernel. – Regardless of CPU constraints on containers, products must be licensed the same way
as if customer wasn't using containers at all.
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Deploying WebLogic on Docker
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Building WebLogic Docker Images• Download JDK 8 binary for Linux x64• Download WebLogic 12.2.1 Generic Installer• Write a Dockerfile extending the oraclelinux:7
Docker image.– Or use samples from GitHub
• Write a set of WLST files to create a WebLogic Domain. Tie that into a second Dockerfile to build a domain Docker image.– Or extend samples from GitHub
• Automate everything!Oracle Linux
JDK + WebLogic
WebLogic Domain
Base Image
WLSInstallImage
WLS DomainImage
EAR/WARApp Image
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Runtime Topologies for WebLogic on DockerSupported topologies for customers with different needs, operations models.
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WebLogic Domain Cluster
50
MS Container 1
NMMS
AppJMS
(A) Topology - Lightweight VM – Example Expand a Cluster: Add Managed Servers Into Domain
MS Container 2
NMMS
AppJMS
MS Container 3
NMMS
AppJMS
Admin Container
WLS Admin Server
MS Container 4
NMMS
AppJMS
MS Container 5
NMMS
AppJMS
MS Container 6
NMMS
AppJMS
# docker run –-name wlsadmin –d mywlsimage startWebLogic.sh
LBR WebTier
OHS
# docker run –-link wlsadmin:wlsadmin –d mywlsimage createServer.sh# docker run –-link wlsadmin:wlsadmin –d mywlsimage createServer.sh
Linux Host (physical/virtual server 1)
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Linux Host server 0
Domain Cluster 1
51
WLS Container 1
NMMS
AppJMS
(A) Topology - Lightweight VM – Multiple HostStarting with Docker 1.9+, containers can communicate across hosts using Overlay Network
WLS Container 2
NMMS
AppJMS
WLS Container 3
NMMS
AppJMS
Admin Container
WLS Admin Server
WLS Container 4
NMMS
AppJMS
WLS Container 5
NMMS
AppJMS
WLS Container 6
NMMS
AppJMS
Linux Host (physical/virtual server 2)Linux Host (physical/virtual server 1)
LBR Container
OHSOTD
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Artifacts Are Now Immutable Containers – Not EARs, WARsContainers can have anything in them and are highly portable
• No more installing a JVM, app server, and then deploying the artifacts to them
• Build the container once, deploy it anywhere. Can include complex environment variables, scripts, etc
• Containers should be free of state and configuration
• Containers should not assume they are able to write to a persistent local file system
Hardware
Operating System
Hypervisor
VM 1 VM 2
Legacy
Hardware
Operating System
Container 1 Container 2
Container Approach
OS
App Server
EAR/WAR
OS
App Server
EAR/WAR The Artifact You Deploy
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Linux Host 0 Linux Host 3Linux Host 1 Linux Host 2
53
(B) Topology - Containerized Apps – Single/Multi HostLoad Balancing only. There is no real clustering replication. No failover.
LBR WebTier
OHSWLSContainerized
AS
AppJMS
Domain App 0
WLSContainerized
AS
AppJMS
Domain App 0
WLSContainerized
AS
AppJMS
Domain App 0
WLSContainerized
AS
AppJMS
Domain App 1
WLSContainerized
AS
AppJMS
Domain App 1
WLSContainerized
AS
AppJMS
Domain App 1
root@host_1 # docker run –d mywlsapp0 startWebLogic.shroot@host_2 # docker run –d mywlsapp0 startWebLogic.shroot@host_3 # docker run –d mywlsapp0 startWebLogic.sh
root@host_1 # docker run –d mywlsapp1 startWebLogic.shroot@host_2 # docker run –d mywlsapp1 startWebLogic.shroot@host_3 # docker run –d mywlsapp1 startWebLogic.sh
Copyright © 2016, Oracle and/or its affiliates. All rights reserved. |
Program Agenda
Docker Overview
Strategy and Positioning
Docker on Oracle Cloud
Oracle Technology on Docker
Extras
1
2
3
4
5
Copyright © 2016, Oracle and/or its affiliates. All rights reserved. |
Recipes and Samples for Docker Images• GitHub project contains only samples and Dockerfiles (recipes) for building
images– No binaries are published. – Customers must download binaries from Oracle as usual.
• Oracle does not provide compiled Docker images for non-Open Source, commercial products on any public registry (i.e.: Docker Hub)
• Recipes and samples for Docker images on GitHub are published under CDDL+GPL dual license
Copyright © 2016, Oracle and/or its affiliates. All rights reserved. |
Other Docker Recipes Published on Oracle GitHub• Open Source / Non-commercial / Not Supported
– NoSQL Community Edition– GlassFish Application Server Open Source Edition– OpenJDK
• Recipes/Samples for Other Products– Oracle JDK (standalone)
• * not certified/supported yet
Copyright © 2016, Oracle and/or its affiliates. All rights reserved. |
Links and External Resources• Oracle WebLogic Docker Announcement
– https://blogs.oracle.com/WebLogicServer/entry/oracle_weblogic_server_12_21
• Oracle Linux Docker Announcement– https://blogs.oracle.com/linux/entry/oracle_linux_images_for_docker
• Oracle on GitHub– http://www.github.com/oracle/docker-images
• Oracle on Docker Hub– http://hub.docker.com/u/oracle
• MOS Doc.ID link– https://support.oracle.com/epmos/faces/DocumentDisplay?id=2017945.1
• FMW Virtualization Support Page– http://www.oracle.com/technetwork/middleware/ias/oracleas-supported-virtualization-089265.html
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