Marcel den Ouden - Home - Intersystems Benelux Symposium …...Basics: Containers and Cloud...
Transcript of Marcel den Ouden - Home - Intersystems Benelux Symposium …...Basics: Containers and Cloud...
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Basics: Containers and Cloud Deployments
Marcel den OudenSenior Sales Engineer
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I am a docker container. Where am I?
Running in a pod in a worker node on a kubernetes cluster,
on a VM in the AWS cloud.
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What is the cloud?
Somebody else’s computer?
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The Cloud / Cloud computing
Share IT resources (“computing” power) to reach economies of scale• Different business hours is Asia/Europe/Americas• Temporary need for a lot of resources (end of month report)
Use what you need, when you need it
Comparable to the electric grid
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What are containers?
Why should I care?
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Refresher – virtualization light
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Why containers
No/limited OS to manage
“Runs on my machine” – libraries/etc
Smaller footprint than OS virtualization
Advantages for development/testing
Security – expose only what is needed
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Container Orchestration - Why
Container should ideally have one function
Solutions are a combination of several containers
Example: your application + api management + SAM
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Orchestration of containers
Start with simple orchestration on your desktop:
Docker-compose
Your infrastructure defined by a YAML file
Suitable for small projects
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InterSystems Cloud Manager (ICM)
Orchestration tool by InterSystems
Both container and bare metal
Defined by a json file
Runs in a docker container!
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Container Management Platforms
Scheduling & Placement
Service Integration• Networking• Persistent Storage• Security• Monitoring• Logging
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The Platform
Kubernetes is a portable, extensible, open-source platform for managingcontainerized workloads and services, that facilitates both declarativeconfiguration and automation. It has a large, rapidly growing ecosystem.
Kubernetes services, support, and tools are widely available.
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Why Kubernetes
The most adopted container orchestration platform in the market• Available on all CSPs & on-prem• No Lock-in• One of the most successful OSS projects• Promoting cloud standardization via CNCF
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The -as-Code Evolution
Single Cloud
Single definitionSingle infrastructureSingle cloud provider
AWSIaaS API
AWS CloudFormation template
AzureIaaS API
Terraform Providers .tf
IaaS API IaaS API
GCPAWS
IaaS API IaaS API IaaS API
AWS GCP Azure
IaaS API
On-Prem
Cloud Controller Manager
Kubernetes YAML definitions
Multi Cloud
Single definitionMulti infrastructuresMulti cloud providers
Hybrid Multi Cloud
Single definitionHybrid federated
Hybrid multi cloud
Infrastructure-as-Code Platform-as-Code
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Benefits of Kubernetes
• Intelligent Scheduling
• Self Healing
• Auto Scaling
• Service Discovery
• Load Balancing
• Safer Deployments
• Application Portability
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Kubernetes Design PrinciplesScalability• Horizontal Pod scaling + CPU thresholds + LBs + operators
High Availability• Itself• Infrastructure• The app
Portability• Public cloud, on-prem, any mainstream Linux distro (VM or bare metal)
Security• Cluster namespaces, app secrets, network…
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Architecture
API server
Scheduler
Controller-manageretcd
Worker node
kubelet kube-proxy
Cont
aine
r ru
ntim
ePod
ContainerContainer
Container
Pod
Worker node
kubelet kube-proxy
Cont
aine
r ru
ntim
ePod
ContainerContainer
Container
Pod
internet
Kubernetes Master node
$ kubectl
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InterSystems IRIS Kubernetes Operator
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Kubernetes Operators
• CoreOS introduced the concept in 2016
• It performs & automate the work of a human operator• codifies domain expertise to deploy & manage an application
• Adds a new native type to Kubernetes― Custom Resource Definition (CRD) – GA with 1.16 (Sept 2019)― Extends the Kubernetes API Manager― It helps us with Domain Specific Knowledge
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Operator Patterns
• An Operator – a way to drive an app on top of Kubernetes -• Define the app
― Helps me with the domain specific knowledge with the declaration• Deploys
― Handle the spin up of all the declared application components― Applies best practices
• Manages― Maintains the application― Carries out reconciliation― Runs upgrades― Deals with failure recovery― Can scale― Can interact directly with the application
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Option 1 cloud but no containers (yet)
You are probably already doing this
“Sombody else’s VM”
No need to manage hardware
Can scale vertically
You manage from the OS level
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Option 2 containers but no cloud
Containers are often run in the cloud but you don’t have to.
Step1: Docker Desktop or Linux VM to run container locally
Why: Allow developers to try latest and greatest version
Try & get used to using Docker
Adapt a “Devops” culture
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Option 3 Containers in the cloud
Full cloud with an orchestrator
This is rapidly becoming the standard for new applications
Lot’s of new tools to learn: Docker, Kubernetes
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How can InterSystems help you?
Try it, even for free!
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What does InterSystems have to offer?
IRIS in the cloud (AWS, Azure, GCP, Tencent)
IRIS release in docker containers
Kubernetes: InterSystems IRIS Kubernetes operatorRewriting our demos to run in Kubernetes
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Thank you.