Docker and Containers:The Big Picture
COURSE INTRODUCTION
THE BASICS
About Me
 |
 |
 |
DevOps@RajeshKumar.XYZ
Course Objective
To bring you up to speed on what all the buzz is around Docker and containers.
Course Agenda
- What Are Containers
- What Is Docker
- Preparing to Thrive in a Container World
- What Kind of Work Will Containers Do
- Docker Hub and Other Container Registries
- Are Docker and Containers Ready for
- Production and the Enterprise
- What Is Container Orchestration All About
What Are Containers?
Setting the Scene Applications run businesses
Applications run businesses
Applications run businesses
Applications run on servers
Applications run businesses
Applications run on servers
- Procurement lead times
- Up-front capex
- Ongoing opex
- Applications run businesses
- Applications run on servers
- Procurement lead times
- Up-front capex
- Ongoing opex
- Hypervisors allow multiple apps per server
The Trouble with Hypervisors
- Applications run businesses
- Applications run on servers
- Procurement lead times
- Up-front capex
- Ongoing opex
- Hypervisors allow multiple apps per server
- Applications run businesses
- Applications run on servers
- Procurement lead times
- Up-front capex
- Ongoing opex
- Hypervisors allow multiple apps per server
- Applications run businesses
- Applications run on servers
- Procurement lead times
- Up-front capex
- Ongoing opex
- Hypervisors allow multiple apps per server
- Each OS.
- Uses CPU
- Uses RAM
- Uses disk
- May have license cost
- Requires admin time
Containers
Summary
Coming Up Next… |
Docker DockerDocker… |
|---|
What Is Docker?
Agenda
Docker Inc.
Docker Inc.
docker work
Docker Inc.
The Docker Project
- Open source
- Apache License 2.0
- All about making awesome tools that enable us to do things better
- Multiple tools in the project
Docker Engine
The Docker Project
- Open source
- Apache License 2.0
- All about making awesome tools that enable us to do things better
- Multiple tools in the project
- Some of the biggest names in the industry involved
The Docker Project
- Open source
- Apache License 2.0
- All about making awesome tools that enable us to do things better
- Multiple tools in the project
- Some of the biggest names in the industry involved
The Docker Project
- Open source
- Apache License 2.0
- All about making awesome tools that enable us to do things better
- Multiple tools in the project
- Some of the biggest names in the industry involved
The Docker Project
- Open source
- Apache License 2.0
- All about making awesome tools that enable us to do things better
- Multiple tools in the project
- Some of the biggest names in the industry involved
The Open Container Initiative
Container history….
The Open Container Initiative
The Open Container Initiative
The Open Container Initiative
The Open Container Initiative
- Lightweight governance council
- Standardize:
- Container format
- Container runtime
- Vendor neutral
- Platform neutral
- Standardize:
- Formed in June 2015
- Operates under The Linux Foundation
The Open Container Initiative
- Lightweight governance council
- Standardize:
- Container format
- Container runtime
- Vendor neutral
- Platform neutral
- Standardize:
- Formed in June 2015
- Operates under The Linux Foundation
- who?
The Open Container Initiative
Deciding on the specs of the rail tracks…. so we can concentrate on building better trains….
Summary
Coming Up Next… |
Preparing for containers… |
|---|
Preparing to Thrive in a Container World
Agenda
- Individual preparation
- Organizational preparation
Personal Preparedness
Personal Preparedness
Personal Preparedness
- Docker Deep Dive
- Integrating Docker with Devops Automated Workflows
- More to come...
Organization and Team Preparedness
Don’t do a Larry
Poo-pooed: disregarded as unnecessary and needing no response.
Accept that containers are coming.
Organization and Team Preparedness
- Accept that containers are coming
- Determine whether you already have containers hiding in your estate
Organization and Team Preparedness
- Accept that containers are coming
- Determine whether you already have containers hiding in your estate
- Start making it official
Organization and Team Preparedness
- Accept that containers are coming
- Determine whether you already have containers hiding in your estate
- Start making it official
- Don’t ignore Operations
Organization and Team Preparedness
- Orchestration tools
- Clustering tools
- Management tools
- Monitoring and logging tools
- Accept that containers are coming
- Determine whether you already have containers hiding in your estate
- Start making it official
- Don’t ignore Operations
Organization and Team Preparedness
- Accept that containers are coming
- Determine whether you already have containers hiding in your estate
- Start making it official
- Don’t ignore Operations
- Get devs and ops talking to each other
Organization and Team Preparedness
- Accept that containers are coming
- Determine whether you already have containers hiding in your estate
- Start making it official
- Don’t ignore Operations
- Get devs and ops talking to each other
- Who’s budget does this come out of?
Why Being Prepared Is so Important
https://www.datadog hc.com/docker-adoptionJ
Summary
Coming Up Next… |
How will containers impact? |
|---|
What Kind of Work Will Containers Do
Stateful vs Stateless
Stateless: Does not keep any changes or data
Stateful vs Stateless
- Stateless: Does not keep any changes or data
- Stateful: keeps changes and data
Stateful vs Stateless
Q: Are containers just for stateless apps and services?
A: Docker and containers can handle stateful and stateless workloads
- Stateless: Does not keep any changes or data
- Stateful: keeps changes and data
Containers and Modern Stateless Apps
“Hypervisors revolutionized IT.”
What are Containers module
Hypervisor Vrtualization
Hypervisor Vrtualization
We could deploy some of our legacy apps directly inside of container...
|
|
|---|
Containers and Modern Apps
Containers and Modern Apps
Containers and Modern Apps
Containers and Modern Apps
Containers and Modern Apps
Containers and Modern Apps
Containers and Modern Apps
Containers are great at modern cloud-native apps
Far superior to Virtual Machines at this
Containers and Traditional Apps
Containers and Traditional Apps
A lot of early messaging from Docker Inc. was about using containers for modern cloud-native apps
- This is where containers naturally excel
- It does not mean that containers cannot be used for traditional enterprise apps
Most Popular Official Repos on Docker Hub
Summary
Stateful workloads are becoming first-class citizens in the Docker world
Are containers just for stateless apps and services?
No! Containers do a great job with stateless and stateful
Coming Up Next… |
Docker Hub and Container Registries |
|---|
Docker Hub and Other Container Registries
Agenda
- Container Registries
- What they are
- How they work
- Why they’re sooooooo important
Container Registries
- Places to store and retrieve container images
- Docker Hub is the official Docker registry
- 3rd party registries exist
Container Registries
- Places to store and retrieve container images
- Docker Hub is the official Docker registry
- 3rd party registries exist
- Registries contain repositories
- Repositories can be public or private
Registry Security
- Are public repositories wide open to the world?
- Yes for pulling (downloading)
- No for pushing (uploading changes)
- Private repositories are not open to the world
- Private registries are available
- Run inside of your corporate network
- Docker Trusted Registry (DTR)
- Quay Enterprise
- etc.
- Docker Content
Container registries are becoming central to application infrastructure and application delivery
Summary
Summary
Coming Up Next… |
Are containers ready for production and the enterprise? |
|---|
Are Docker and Containers Ready for Production and the Enterprise
Production worthiness and enterprise worthiness are your decision
This module will help you make that decision
Offerings from Docker Inc.
Offerings from Docker Inc.
Docker Engine: > Version 1.10
- Three channels:
- Experimental
- Stable
- Commercially Supported
Offerings from Docker Inc.
Docker Engine: > Version 1.10
- Three channels:
- Experimental
- Stable
- Commercially Supported
Offerings from Docker Inc.
Docker Engine: > Version 1.10
- Three channels:
- Experimental
- Stable
- Commercially Supported
Offerings from Docker Inc.
Docker Engine: > Version 1.10
- Three channels:
- Experimental
- Stable
- Commercially Supported
Docker Swarm > Version 1.0+ Scales well
Docker Content Trust Authenticate content
Offerings from Docker Inc.
Docker Engine: > Version 1.10
- Three channels:
- Experimental
- Stable
- Commercially Supported
Docker Swarm > Version 1.0+ Scales well
Docker Content Trust Authenticate content
Docker
- (ship to the cloud)
Docker Trusted Registry
- (ship on-prem)
Tutum
- (Deploy to the cloud)
Universal Control Plane
- (Deploy on-prem)
The Wider Ecosystem
Growing rapidly
Lots of startups
Established players
Summary
Coming Up Next… |
Container Orchestration |
|---|
What Is Container Orchestration All About?
Container Orchestration - Analogy
Container Orchestration - Analogy
Container Orchestration - Analogy
Container Orchestration
Apps comprise multiple parts
Container Orchestration
- Apps comprise multiple parts
- Thousands of containers
- Hundreds of hosts
Container Orchestration
- Apps comprise multiple parts
- Thousands of containers
- Hundreds of hosts
- Orchestration:
- Defines our app
Container Orchestration
- Apps comprise multiple parts
- Thousands of containers
- Hundreds of hosts
- Orchestration:
- Defines our app
- Provisions infrastructure
- Deploys our app
- Scales our app
Container Orchestration
- Apps comprise multiple parts
- Thousands of containers
- Hundreds of hosts
- Orchestration:
- Defines our app
- Provisions infrastructure
- Deploys our app
- Scales our app
- Docker orchestration Products:
- Machine
- Compose
- Swarm
- Ecosystem orchestration products:
Container Orchestration
- Apps comprise multiple parts
- Thousands of containers
- Hundreds of hosts
- Orchestration:
- Defines our app
- Provisions infrastructure
- Deploys our app
- Scales our app
- Docker orchestration Products:
- Machine
- Compose
- Swarm
- Ecosystem orchestration products
Summary
Summary
What Next?
Unikernels
“A potential game-changing technology to watch out for in the next 3-5 years.”
Questions?
