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Docker Agility in Cloud: Introducing Oracle Container Cloud Service Emin Askerov IMC Cloud & MW Consultant February, 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.

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Program Agenda

Containers: what is it and why do we need them?

Docker Containers Short Overview

DevOps and Containers

Introducing Oracle Container Cloud: Docker Agility in Cloud

Container Cloud Service Concepts and Key Terminology

Summary

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Program Agenda






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What are Containers? Why use them?

• 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)

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

Developers care because:

• 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)

IT cares because: • 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

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Containers – Explosive Adoption

4B+ Docker Container Downloads 78%

Planning to use Docker containers to build new microservices applications

90% Using Docker for apps in development

Docker is the fastest growing enterprise DevOps tool with >2/3 enterprises using or planning to use it

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SOURCES: DOCKER.COM; THE EVOLUTION OF THE MODERN SOFTWARE SUPPLY CHAIN, DOCKER SURVEY 2016; RIGHTSCALE 2016 STATE OF THE CLOUD REPORT


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

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Key Container Use Cases

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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)


Program Agenda






Summary

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What is Docker?

• It’s an improved, user-friendly Linux Container technology

• Easy, human readable mechanism to build containers images based on recepies, 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 “lightweighter” virtualization technology

• Runs on Linux, Windows, and Mac OS X – Soon on Solaris too, work being done by Oracle engineers

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

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Isn’t a Container Just Like a VM? NO! Key differences

Harder to over-subscribe physical hardware resources like CPU and memory

Utilization

Very easy to get to 100% consume physical hardware resources. Can easily move containers off of hosts when the hosts become too utilized

Performance Heavy weight – must often go through abstraction layers to access physical hardware resources

Lightweight – a container is just an operating system process. 100% native access to all physical hardware resources

Must use configuration management tool to apply updates. Or must update every single gold image and then re-deploy

Updates Can apply diffs to container images, or most often, the image is quickly rebuilt and container re-deployed

Can be automated with 3rd-party tools (Chef/Puppet/etc), but takes a lot of time. Snapshots are bigger compared to Container images.

Image Creation

Same options as VMs + can also declaratively construct one using native, 1st class Dockerfile format.

VMs Containers

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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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Docker Images

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• Containers have writeable file system

• Recipes, the Dockerfiles, can be easily shared

• Container as code • Images have layered file

systems • Images can be extended • Images can be shared as

binary files

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Start Using Containers

Docker

Hardware

Operating System

bins/libs

Container0

bins/libs

apps

Container1

apps

Docker

CLI REST Dockerfile

volumes

• #1 value – app packaging

• Containers help deploying Microservices-like architecture

– Higher density

– Easy to start/stop

– Portability

• Containers are lightweight, just like microservices themselves

• Containers can run in VMs too

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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

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Why IT Cares About Docker Containers?


What are the Benefits and Use Cases with Docker Containers?

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






Program Agenda






Summary

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DevOps: The Old Battle

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Who is at fault? Who to blame?

It's not my machines, it's your code!

It's not my code, it's your machines! Target roles may

now include: Developers Architects Operations DevOps


What are some of the buzzwords around DevOps?

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Continuous Integration

Agile Development vs. Agile Delivery

Continuous Delivery

Containers/Docker

IDEs & Coding Build (Scripting) CI/CD


Traditional Continuous Integration

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Developers


Continuous Integration with Docker • CI Server builds Docker image and pushes image to a Docker Registry

• Image deployed in next SDLC region

24 Oracle Confidential – Restricted


Program Agenda






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Introducing Oracle Container Cloud Service

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Key Benefits

Enables developers to get started and deploy containers quickly, DevOps teams with Docker management, visibility and control.

Integrates with Continuous Integration & Deployment Pipelines to automate new releases.

Supports polyglot development, open source software and microservice architectures

Building & maintaining Docker environments & management is complex, costly and time consuming

Lack of example container applications and best practices to get started

Enterprises need Docker management from dev/test through to production

What Problems Does it Solve?

Hosted container service allows customers to deploy and run their own Docker containers

Management and controls to orchestrate container placement and policies What is It?

Copyright © 2015, Oracle and/or its affiliates. All rights reserved. | 27

Oracle Container Cloud Service

Managing 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

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1. Easy Onboarding and Use

• Intuitive complete UI for Developers and DevOps teams

• Quickstart Wizards for rapid setup

• Dashboards give at a glance operational views

• Docker Compatible (Docker Engine and tooling like Docker Compose)

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2. Example Application Stacks

• Example “Stacks” enable quick customer ramp without complex orchestration

• Service Discovery Built-In to enable multi-host app deployments

• Complete functioning examples: – Load Balancing

– Logging

– Monitoring

– Open Source (WordPress, Redis, others)

– WebLogic Multi-Host

Load Balancer

Admin Server

Managed Server

Managed Server

Managed Server

Query

Multi-Host WebLogic Stack with Load balancer

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Copyright © 2015, Oracle and/or its affiliates. All rights reserved. | 31 Copyright © 2016, Oracle and/or its affiliates. All rights reserved. | 31

3. Part of Rich App Dev Portfolio Unique in Blending Traditional, Cloud Native and Low Code with End to End PaaS

Oracle Platform for Cloud Application Development

Compute (VM, Bare Metal)

COMMON SERVICES

Developer Cloud (CICD)

Identity APM/Log Analytics

API Management

INTEGRATION SERVICES

DATA SERVICES Database NoSQL MySQL

Integration SOA

BACK-END SERVICES

Mobile Application Container

Java

EE SDKs

(3rd Party, JET)

App Builder

FRONT-END TOOLING

Network Storage

Infrastructure as a Service

Internet of Things

Functions

F(x)

Container Cloud (Docker, Orchestration)


Oracle Cloud and Docker Containers

Container CS Compute CS Application Container CS

DIY Container Management

Oracle Managed Container Service

Docker-based Cloud Polyglot Platform

IaaS CaaS PaaS

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Program Agenda






Summary

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Container CS Provides This 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

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Key OCCS Terminology

OCCS Concept Description

Resource Pools Resource pools are a way to organize hosts and combine them into isolated groups of compute resources

Hosts Hosts (or ‘worker nodes’) are the Oracle Compute virtual machines (VMs) managed by Oracle Container Cloud Service on which you deploy services and stacks to run Docker containers.

Service A service is a template for how to run a container from a single image and associated Docker runtime information (e.g. mapped ports, storage volumes etc…)

Stack A Stack is a template for how to run a multi-service (container) based application (e.g. an “ELK” stack). It is very similar (and compatible with) Docker Compose format.

Deployment One or more running containers that have been created from deploying a Service or a Stack


• Hosts are Oracle Compute VMs managed by OCCS

• Used for deploying services and stacks to run Docker containers

• OCCS has one manager node, and a number of worker nodes (hosts)

• Manager node orchestrates the deployment of Docker containers to the worker nodes

• Worker node runs an OCCS agent to communicate Docker status to and from the manager node

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Oracle Container Cloud: Hosts


• Resource pools - are a way to organize hosts and combine them into isolated groups of compute resources.

• Enable you to manage your Docker environment more effectively by deploying services and stacks efficiently across multiple hosts

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Oracle Container Cloud: Resource Pools


• Service comprises all of the necessary configuration for running a Docker image as a container on a host

• High-level configuration objects that you can create, deploy, and manage using OCCS

• Set of instructions to follow to deploy a running container

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Oracle Container Cloud: Services


• Stack comprises all of the necessary configuration for running a set of services as Docker containers in a coordinated way and managed as a single entity

• For instance, might be one or more web server containers and a DB container

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Oracle Container Cloud: Stack


• Deployment comprises a service or stack in which Docker containers are managed, deployed, and scaled according to a set of defined orchestration rules

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Oracle Container Cloud: Deployment


Services and Stacks

Service Editor Stack Editor


Program Agenda






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• Docker Compatible (Docker Engine, Docker Compose)

Convert between Docker run, UI, YAML

• One Click Deploy (of example application stacks)

• Registry Integration (connect to public & private registries such as Docker Hub)

• Build CI/CD Pipelines (via “WebHooks”)

• Service Discovery – Built in to enable multi-container cross host deployments

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Container CS Key Features

Cloud & Container Native Enterprise Operations

Ready Collaboration Built-In

• Operations Dashboards

Key health/performance stats & container logs

• Container Health Checks (port ping for container processes)

• Service Scaling (scale out services via UI or API)

• Orchestration & Scheduling Policies (least CPU/Memory, tag based placement, others)

• Self-Healing Deployments (maintain the desired state of a deployed multi-container app)

• Elegant Interface - “Quickstart” Wizards to get users started

• Best Practices Included (example stacks covering monitoring, logging, load balancing)

Run & Deploy Oracle Certified Docker images

• API Ready – Drive common container operations and deployments via REST API

• Resource Pools (partition compute resources across dev, test, staging etc…


Demonstration Deploying and managing container infrastructure in Oracle Container Cloud Service Emin Askerov IMC Cloud & MW Consultant February, 2017

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TRY: cloud.oracle.com/container

VISIT: cloud.oracle.com/container

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