deploying an oracle database in a docker · •oracle does not provide compiled docker images for...

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Deploying an Oracle Database in a Docker Container

Sean StaceyOracle Database PMOracle Code, 2018


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The 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.


Agenda

Docker Overview

Oracle and Docker

Deploying an Oracle Database on Docker

Docker on Oracle Cloud

Extras

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4

5


What is Docker?

• A software container platform

• Originated from Linux / Linux Containers

– Also available on Windows and Mac OS X

– Solaris is coming soon

• Part of the Linux Open Container Initiative (OCI)– Part of Open Source Linux

• Editions:

– Commercial Edition (EE) – Sold by Docker Corp

– Community Edition (CE) – Part of Open Source Linux


What is Docker?

• An improved, user-friendly Linux Container technology

• Easy, human readable mechanism to build containers images based on recipes, aka Dockerfiles

• Networking, memory, CPU, and file system boundaries for processes

• Images for containers can be easily shared and extended– Container file system is layered; deltas used with copy-on-write

• Extremely fast adoption by developers

• Considered as a “light-weight” virtualization technology

An Open Platform to Build, Ship, and Run Distributed Applications


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

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bins/libs

apps

VM 0

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bins/libs

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VM 1

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bins/libs

apps

bins/libsContainer0

bins/libs

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Container1

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bins/libs

Container0

bins/libs

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Container1

apps

Hypervisor Type1 Hypervisor Type2 LXC Docker

CLI REST Dockerfile

volumes


What is Docker?

• Container: A lightweight standalone, executable piece ofsoftware that includes everything required to run it on a host

• Docker-engine: The sowftare engine running containers

• Images: Collection of software to be run as a container

• Registry: Place to store and download images

• Volumes: Place to persist data outside the container

Terminology


Docker Key Components

Source: https://docs.docker.com/engine/docker-overview/

• Docker Client talks to Docker Daemon

• Client can run on a same machine or connect remotely

• Docker Registries or Hubs hold images


Docker Key Components - Volumes

Source: https://docs.docker.com/engine/docker-overview/

• Docker Client talks to Docker Daemon

• Client can run on a same machine or connect remotely

• Docker Registries or Hubs hold images


What is Docker?

• Containers are non-persistent

– Once a container is deleted, all files inside that container are gone

• Images are immutable

– Changes to an image require a new image build

– Data to be persisted has to be stored in volumes

• Containers are spun up from images

Concepts


What is Docker?

• Allows abstraction of environments into images

• Allows creation of hierarchical images

• Supports multi-layered image registries

Concepts


DevOps and Docker…

• Abstracts virtual environment (container) creationinto simple steps:– docker create …

– docker run …

– docker rm …

• Runs directly on the Linux kernel (cgroups)– Avoids the hypervisor overhead

Why the Popularity?


• Developers benefit:– 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 benefit:

– 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

DevOps and Docker…Why the Popularity?


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


Containers Are The New Virtualization TrendFour main use cases

Hardware

Operating System

Container

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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.


Program Agenda

Docker Overview

Oracle and Docker



Extras

3

4

5

2

1


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 the worry of being locked in.

• Oracle joined in 2015.

– blogs.oracle.com/solaris/entry/oracle_joins_the_open_container

https://blogs.oracle.com/solaris/entry/oracle_joins_the_open_container


Oracle Database on Docker

• Oracle Database is fully supported on Docker

– Oracle Linux 7.3 and later

– Red Hat Enterprise Linux 7

• Oracle Database version 12.1.0.2 or later

• Oracle images on Oracle Container Registry & Docker Store

• Docker build files on GitHub

• RAC is also supported

My Oracle Support Note – Oracle Support for Database Running on Docker (Doc ID 2216342.1) -https://support.oracle.com/epmos/faces/DocumentDisplay?id=2216342.1

https://support.oracle.com/epmos/faces/DocumentDisplay?id=2216342.1


Oracle Multitenant & Docker

App B App CApp A

App A App B App C


Oracle Database on Docker

• Docker container contains single-PDB CDB

• PDB can be plugged, unplugged, etc.

• PDB can move bi-directional


Oracle on GitHubRecipes and samples for Docker Images of Oracle products and projects

https://github.com/oracle/docker-images

https://github.com/oracle/docker-images


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


https://hub.docker.com/u/oracle/

https://hub.docker.com/u/oracle/


Program Agenda

Docker Overview

Oracle and Docker



Extras

2

4

5

3

1


Install Docker in your Oracle Linux 7.4 host

# cd /etc/yum.repos.d/

# wget http://yum.oracle.com/public-yum-ol7.repo

# vi public-yum-ol7.repo

>> edit entries for ol7_latest, ol7_uekr4 and ol7_addons:

>> enabled=1

# yum install docker-engine

# systemctl start docker

# systemctl enable docker

# systemctl status docker

https://blogs.oracle.com/hlsu/install-docker-on-oracle-linux-7



Prepare the Container for deploying the Database

# yum install oracle-rdbms-server-12cR1-preinstall –y

# useradd -u 54321 -g oinstall -G dba oracle

# id oracle

# passwd oracle

# SELINUX=permissive

# reboot

# setenforce permissive

# echo "oracle ALL=(ALL) NOPASSWD: /usr/bin/docker" >> /etc/sudoers

# echo "alias docker=\"sudo /usr/bin/docker\"" >> /home/oracle/.bash_profile

# su - oracle


Pull the Oracle Database Image


Running the Oracle Database Image

Without mapping any ports.


Running the Oracle Database Image


Live Demo


Agenda

Docker Overview

Oracle and Docker



Extras

1

2

3

4

5


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


• AcmeCo• v1.2

Container


• AcmeCo• v1.2

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• AcmeCo• v1.2

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• AcmeCo• v1.2

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• AcmeCo• v1.2

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• AcmeCo• v1.2

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• AcmeCo• v1.2

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• AcmeCo• v1.2

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App

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• AcmeCo• v1.2

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• AcmeCo• v1.2

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• AcmeCo• v1.2

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• AcmeCo• v1.2

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• AcmeCo• v1.2

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• AcmeCo• v1.2

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• AcmeCo• v1.2

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• AcmeCo• v1.2

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• 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


Oracle Cloud and Docker Containers

Container CSCompute CS Application Container CS

DIY Container Management

Oracle Managed Container Orchestration

Docker-based Cloud Polyglot Platform


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


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


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


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


Agenda

Docker Overview

Oracle and Docker



Extras

1

2

3

4

5


Links and External Resources

• Oracle Docker Container Registry– https://container-registry.oracle.com/

• Oracle Linux Docker Setup – (Oracle Linux Blog: Honglin Su)– https://blogs.oracle.com/hlsu/install-docker-on-oracle-linux-7

• Oracle on GitHub– http://www.github.com/oracle/docker-images

• Oracle DB Setup on Docker – (Oracle Blog: Gerald Venzl)– https://geraldonit.com/2017/08/21/creating-an-oracle-database-docker-image/

• Oracle on Docker Hub– http://hub.docker.com/u/oracle

• MOS Oracle DB Support Policy for Docker– https://support.oracle.com/epmos/faces/DocumentDisplay?id=2216342.1

• MOS Oracle Support Policy for Docker on Linux– https://support.oracle.com/epmos/faces/DocumentDisplay?id=1921163.1

https://container-registry.oracle.com/


http://www.github.com/oracle/docker-images

https://geraldonit.com/2017/08/21/creating-an-oracle-database-docker-image/

http://hub.docker.com/u/oracle




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