How to Use the PowerPoint Template - · PDF fileTitle: How to Use the PowerPoint Template...

Copyright © 2017, Oracle and/or its affiliates. All rights reserved. |

Oracle and

Faris Al-BadriOracle Sales Consulting Switzerland

Bern, September 2017


Safe Harbor Statement

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 Grundlagen

Oracle Docker Images

Oracle Container Strategie

Kubernetes Grundlagen

Oracle Container Management

Q&A

1

2

3

4

5

3

6


Multi-Dimensional Evolution of Computing

4

Development Process Application Architecture Deployment and Packaging Application Infrastructure

Waterfall Monolithic Physical Server Datacenter

Agile N-Tier Virtual Servers Hosted

DevOps Microservices Containers Cloud


The history of Unix containers

5

While Docker has been playing a key role in adoption of the Linux container technology, they did not invent the concept of containers

UNIX V7 added chroot 1979

FreeBSD Jails 2000

Linux vserver 2001

Oracle Solaris Zones 2004

openvz 2005

Process Containers 2006

cgroups in Linux Kernel (2.6.24) 2007

AIX (6.1)WPARS 2007

LCX 2008

Warden 2011

LMCTFY 2013

Docker 2013

rkt 2014

OCI 2015


Virtual Machines vs. Containers

Virtual Machines● Each virtual machine (VM)

includes the app, the necessary binaries and libraries and an entire guest operating system

Containers● Containers include the app & all of its dependencies,

but share the kernel with other containers. ● Run as an isolated process in userspace on the host OS● Not tied to any specific infrastructure – containers run

on any computer, infrastructure and cloud.

VMs

Containers

6


Linux Containers (LXC)

Oracle Confidential – Internal 7

• OS-level virtualization method for running multiple Linux systems (i.e. containers) on a single control host

• Does not provide a virtual machine, provides a virtual environment that has its own CPU, memory, block I/O, network, etc. space and the resource control mechanism

• Leverages namespaces and cgroups from Linux kernel

• Better isolation than chroot (not just file-level isolation)

Docker is based on LXC but focus is on easier usability for application packaging, portability and administration


Docker Architecture

8

• Client – Command line interface (CLI) for communicating with the host

• Daemon – server process that manages Docker objects

• Image – hierarchy of files build by docker

• Container- runnable instance of an image

• Registry – external storage for Images


Docker on Non-Linux?

Oracle Confidential – Internal 9

Mac OS X• Alpine Linux• Hyperkit

Windows• Hyper-V• Windows Server Containers

Linux• all native

Upcoming: LinuxKit for building portable Linux subsystems


Docker Engine

Oracle Confidential – Restricted 10

• Container execution and admin

• Uses Linux Kernel namespaces and control groups

• Namespaces provide for isolated workspace


Docker Images

• An image is a collection of files and some meta data

• Images are comprised of multiple layers, multiple layers referencing/based on another image

• Each image contains software you want to run

• Every image contains a base layer

• Docker uses a copy on write file system

• Layers are read only

11 Oracle Confidential – Restricted

Copyright © 2017, Oracle and/or its affiliates. All rights reserved. |12

Dockerfile – Text file used to create Docker images

Example Hello World Dockerfile

FROM nginx:1.10.1-alpine

Add index.html /usr/share/nginx/html/index.html

# Override the nginx start from the base container

COPY start.sh /start.sh

RUN chmod +x /start.sh

ENTRYPOINT ["/start.sh"]

Docker build image CLI example

$ docker build -t helloworld:1.0 .

NOTE: The “.” references Dockerfile in local directory

Source: https://github.com/scottsbaldwin/docker-hello-world/blob/master/Dockerfile

Copyright © 2017 Oracle and/or its affiliates. All rights reserved


Docker Images

13 Oracle Confidential – Restricted

FROM ubuntu:15.04 COPY . /app RUN make /app CMD python /app/app.py


Containers and Layers

14

• Container is a runnable instance of an Image

• Multiple containers can share the same (imutable) Image

• Container modifications can be used for building new image

• Container state is lost after stopping


Data Persistence

15

Host-based persistence per container• container-specific directory is

created with each new container• Removing a container deletes its

directory on host• Docker engine crashing on host will

make the directory unavailable

Host-based persistence shared among container• Shared data volumes outside of

Docker engine’s context• Not deleted when container

removed• Changes made to volumes are not

included in image updates


Best Practices for Builds

• Containers should be emphemeral (i.e. stateless)

• Use a .dockerignore file for excluding unnecessary file and dirs

• Avoid installing unnecessary packages

• Each container should have only on concern

• Minimize number of layers (sequencing multiple commands)

• Multi-stage builds (since Docker 17.05)

• Combining layers with “--squash” option (still experimental feature)

• Build cache

16


Docker Demo

17


Why Containers?

18

• Quickly create ready-to-run packaged applications, low cost deployment and replay

• Automate testing, integration, packaging

• Reduce / eliminate platform compatibility issues (“It works in dev!”)

• Support next gen applications (microservices)

• Improve speed and frequency of releases, reliability of deployments

• Makes app lifecycle efficient, consistent and repeatable – configure once, run many times

• Eliminate environment inconsistencies between development, test, production

• Improve production application resiliency and scale out / in on demand

A container is packaged as an entire runtime environment:the service/app plus all dependencies, libraries, & configuration files needed to run it

Portable across environments & lightweight (share the OS)

Developers care because: IT cares because:


Key Container Use Cases

19

SOURCE: THE EVOLUTION OF THE MODERN SOFTWARE SUPPLY CHAIN, DOCKER SURVEY 2016

• Developer productivity a top use case today

• Building out CI/CD pipelines

– Consistent container image moves through pipeline

– Preventing “it worked in dev” syndrome

• Application modernization and portability are also key adoption drivers (Prem <-> cloud)


Plan

Code

Build

Test

Release

Deploy

Operate

Monitor

The Docker DevOps Cycle

Seen in the DevOps Sales Play –featuring:

• Oracle Developer Cloud Service

– Now Includes Docker Image Build Function

• Oracle Container Cloud Service

– Deploy, Operate, Monitor

Dev CSContainer CS

Copyright © 2017, Oracle and/or its affiliates. All rights reserved. | 21

The New Docker Pipeline

Developer Local

App Code, Tests, Docker File

Certified Base Docker Images

Docker App ImageRegistry

Test Staging Production

Docker Management & Control

Dev CSContainer CS

Using Docker with Continuous Delivery in Oracle Cloud [CON4824]

https://static.rainfocus.com/oracle/oow16/sess/14628290041560018s2r/ppt/CON4824- OCCS-DevCS-OOW-091916.pptx




Oracle Container Cloud ServiceManaging Containers Easily on Oracle Public Cloud

Cloud & Container Native

Enterprise Operations Ready

Built-In Collaboration

• Docker Compatible

• One-Click Application Stack Deployment

• Registry Integration

• Build CI/CD Pipelines

• Operations Dashboards

• Container Health Checks

• Service Scaling

• Orchestration & Scheduling Policies

• Resource Pools for Dev, Test, Prod

• Run, Deploy Oracle Certified Docker Images

• Quickstart, Best Practices Included

• Integration REST API


Container Cloud Service Differentiation

1. Easy Onboarding and Use

2. Example Application Stacks

3. Part of Rich App Dev Portfolio

4. Planned Container Hybrid Cloud with Cloud @ Customer

23


Support for Docker Running on Oracle Linux (Doc ID 1921163.1)• Oracle support is limited to the version of Docker built by and downloaded from Oracle.

Support is not provided for the upstream binary packages downloaded from the upstream Docker site.

• Oracle support for Docker is limited to customers with either Basic or Premier Oracle Linux Support Subscriptions.

• Oracle only provides Docker server binary packages for Oracle Linux 6 and Oracle Linux 7 (x86_64). Oracle only provides support for Docker with the Unbreakable Enterprise Kernel Release 4 (UEK4), identified by a kernel version of "4.1" or newer.

• Oracle support is limited to severity 2 service requests and lower. Severity 1 service requests will not be accepted for Docker.

• Support is limited to assistance with the initial installation of Docker and subsequent configuration of Docker to enable downloading, creation and running of Dockerizedapplications.

24


Oracle Docker User Guide

25

https://docs.oracle.com/en/operating-systems/linux.html


Support for Oracle Database Running on Docker (Doc ID 2216342.1)

• Oracle plans to certify the latest versions of Oracle Database to run in Docker containers which are built and supported with Oracle Linux and UEK4 as the host.

• Additionally, Oracle will support customers running Oracle Database (single instance) in Docker containers running on Oracle Linux 7 or Red Hat Enterprise Linux 7. Docker binaries are available in the Addons channel for Oracle Linux. Details on Installation can be found in Chapter 2 of the Oracle Linux Docker Users Guide.

• Oracle Database running in a Real Application Clusters (RAC) configuration in Docker containers is NOT supported.

UPDATE (August ‘17): Oracle RAC for Docker early adaptors announced

26

https://docs.oracle.com/cd/E52668_01/E75728/html/index.html


Oracle Database Images from GitHub

https://github.com/oracle/docker-images/tree/master/OracleDatabase

27

• Oracle DB 12cR2 (12.2.0.1) EE /SE

• Oracle DB 12cR1 (12.1.0.2) EE / SE

• Oracle DB 11gR2 (11.2.0.2) XE


Oracle Database Images from Docker Store

https://store.docker.com/search?q=oracle&source=verified&type=image

28


Oracle Database Images from Oracle Registry

https://container-registry.oracle.com

29


Licensing

Question:

Is Docker an approved hard partitioning technology?

Answer:

No, neither Docker nor Kubernetes nor Docker Swarm are approved hard partitioning technologies. If used to deploy Oracle software all nodes within the cluster will have to be licensed.

30


Oracle Cloud and Docker Containers

Container CSCompute CS Application Container CS

DIY Container Management

Oracle Managed Container Service

Docker-based Cloud Polyglot Platform

IaaS CaaS PaaS

31Copyright © 2017 Oracle and/or its affiliates. All rights reserved


Example Stacks

32

OCCS Default Instance

Additional Stacks on Oracle Github


Oracle Container Cloud Service Architecture

33

OCCS Manager Node

OCCS Worker Node OCCS Worker Node OCCS Worker Node

Image Registry (Public/Private)SSH Access / Console UI / REST API

OCCS Instance


Container CS Provides Out of the Box Functionality

● Create Instances as Needed

● Define Resource Pools

● Add Private Registries

● 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


Packaging / Pricing

35


Cloud Service Size / Price Examples

36

ContainerCloudServiceInstanceSizeExamples Small Medium Large ExtraLarge

WorkerNodes* 1 3 10 100

ManagerNode(1requiredforeverycloudinstance) 1 1 1 1

OCPUsperWorkerNode 1 2 2 4

TotalOCPUs 2 7 21 401

Metered-0.1344USDperOCPUperhour $0.27 $0.94 $2.82 $53.89

Non-Metered-75USDperOCPUpermonth $150.00 $525.00 $1,575.00 $30,075.00

*WorkerNodesaresynonymouswiththetermsalsousedtodescribeDockerHosts,CloudServersandComputeVMs


Demo

Customer Website: https://cloud.oracle.com/Container

https://cloud.oracle.com/container

https://cloud.oracle.com/Container

https://cloud.oracle.com/container


Kubernetes

• Open Source Container Deployment & Management platform started by Google, and part of the CNCF

• Significant community growth and adoption; 1000+ contributors on Github

• Heavy focus on production and operations• Rapid release cadence and feature

expansion• Powerful, language independent platform

for microservices deployment

https://www.cncf.io/


Kubernetes Architecture

podnollocated group of containers that share an IP, namespace, storage volume

kubeletnode agent, responsible for running state of containers in pods

kube-proxynetwork router running on each node

API Serverexposes the Kubernetes API, front-end for the Kubernetes control plane

etcdkey-value store for persistent storage of all cluster data


Configuration

Extensive use of YAML files for configuring pods, services, replicas, …

Example:

40


Scaling

• Deployments can be scaled via configuration, by command or by autoscaling

• Handled by replication-controller, ensures pods restarts when failing

41

Command:


Deployments

• Defined via deployment declaration describing desired state of a deployment object

• Typical operations: create, update, rolling updates, roll backs, pause/resume

42


Services

• Services act a logical bridge between (dynamic) pods and others service or end-users

43

Creating a service will create an endpoint for pods:

ClusterIPvirtual IP address, only reachable from with the cluster (default)

NodePortport that is external reachable

LoadBalancerexternal to Kubernetes cluster, typically set via cloud provider


Kubernetes Networking

• Kubernetes imposes requirements to networking but does not implement these out of the box

• In Kubernetes expects pods to be able to communicate to each other regardless on which node they are running– The advantage of this model is that it removes the port mapping complexities that come from sharing

a single host IP

• Pods have their own IP address and use these addresses for communication

• Different implementation strategies depending on networking setup

44


Kubernetes Networking

• Cloud providers offer Virtual Private Cloud allowing for Kubernetes subnet which is added to the VPS routing table

• Container Network Interface (CNI)– Software that provides plugin libraries for network interfaces within containers– Popular solutions: Weave, Calico

• Overlay network– Example: Flannel

45


Flannel

46


Kubernetes in Oracle Linux 7


Oracle and Wercker

Docker-native CI/CD automation platform for Kubernetes and Microservices deployments


Oracle Expands Open Source Container Commitment

49


Questions?

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