Istio - A Service Mesh for Microservices as Scale

Jan 3, 2019Download as PPTX, PDF4 likes232 views

Manage microservices on Kubernetes using the open source Istio service mesh from IBM, Google, and Lyft. In this presentation we explore the overall value and architecture of Istio and walk through key mechanisms for using Istio to drive highly secure microservices. We will also demonstrate the various features of Istio showing how to intelligently load balance traffic between services, conduct A/B tests, release canaries, and more.

Ram Vennam
IBM Cloud Kubernetes Service
@ramvennam
Istio
Connect, manage and secure
microservices at scale

Agenda
• Fundamentals
• Kubernetes Overview
• Managed Kubernetes
• Problem Statement
• Istio
• Istio Demo
• Q&A
IBM Cloud Kubernetes Service | ©2018 IBM Corporation

IBM Cloud Kubernetes Service | ©2018 IBM Corporation
An engineering approach focused on
decomposing an application into single-
function modules with well defined
interfaces which are independently
deployed and operated by a small team
who owns the entire lifecycle of the
service.
Microservices accelerate delivery by
minimizing communication and
coordination between people while
reducing the scope and risk of change.
Microservices

A standard way to package an application and
all its dependencies so that it can be moved
between environments and run without
changes.
Containers work by isolating the differences
between applications inside the container so
that everything outside the container can be
standardized.
Containers
IBM Cloud Kubernetes Service | ©2018 IBM Corporation

Why Containers Work?
Dan the Developer
Worries about what’s
“inside” the container
• His code
• His Libraries
• His Package
Manager
• His Apps
• His Data
All servers look the same
Oscar the Ops Guy
Worries about what’s
“outside” the container
• Logging
• Remote access
• Monitoring
• Network config
All containers start, stop,
copy, attach, migrate, etc.
the same way
Separation of concerns

Istio - A Service Mesh for Microservices as Scale

Allows users to define how to coordinate the
containers in the cloud when the multi-container
packaged application is deployed.
• Scheduling
• Cluster management
• Service discovery
• Provisioning
• Monitoring
• Configuration management
Container Orchestration

Intelligent Scheduling Self-healing Horizontal scaling
Service discovery & load balancing Automated rollouts and rollbacks Secret and configuration management
IBM Cloud Kubernetes Service | ©2018 IBM Corporation

Slide Title Goes Here
IBM Cloud Kubernetes Service | ©2018 IBM Corporation
Kubernetes Architecture
API
UI
CLI
Kubernetes
Master
Worker Node 1
Worker Node 2
Worker Node 3
Worker Node n
Registry
• Etcd
• API Server
• Controller Manager Server
• Scheduler Server

IBM Cloud Kubernetes Service | ©2018 IBM Corporation
Which do you prefer?

Simplified cluster
management
Extend with
IBM Cloud & Watson
Container security
& isolation
Design your
own cluster
Native open-source
experience
Integrated
operational tools
IBM Cloud Kubernetes Service | ©2018 IBM Corporation

IBM Cloud Kubernetes Service | ©2018 IBM Corporation
More things to
consider!
• Security
• Canary deployments
• A/B testing
• Circuit breaking
• Rate limiting
• Fault injection
• Policy management
Add client libraries into each
microservice?!

http://istio.io

Slide Title Goes Here
IBM Cloud Kubernetes Service | ©2018 IBM Corporation
Intelligent
Routing and
Load Balancing
Resiliency across
Languages and
Platforms
Fleet Wide Policy
Enforcement
In-Depth
Telemetry and
Reporting
Istio Features

IBM Cloud
Istio 1.0
After ~2 years of work
~200 developers
IBM, Google, VMWare, Cisco, Red Hat,
Tigera, others…
Many adapters
Many customers
Istio in Action
Istio Partners
State of Istio

How does it work?
UI Order
container
pod

IBM Cloud Kubernetes Service | ©2018 IBM Corporation
Envoy intercepts
requests
UI Order
Policy
container
pod
container
check policies

IBM Cloud Kubernetes Service | ©2018 IBM Corporation
Report telemetry data
UI Order
container
pod
container
Policy TelemetryPilot Citadel
report

IBM Cloud Kubernetes Service | ©2018 IBM Corporation
Pilot
UI Order
container
pod
container
Policy TelemetryPilot Citadel
config certs

IBM Cloud Kubernetes Service | ©2018 IBM Corporation
Istio Architecture

Istio examples
kubectl apply –f my-rule.yaml

https://istio.io/docs/examples/bookinfo/
Sample: BookInfo

IBM Cloud Kubernetes Service | ©2018 IBM Corporation
Request Routing
Canary Testing
Route user:jason to reviews:v2
Others still get reviews:v1

IBM Cloud Kubernetes Service | ©2018 IBM Corporation
Traffic Shifting
50% -> v1
50% -> v3

IBM Cloud Kubernetes Service | ©2018 IBM Corporation
Rate Limits
5000 requests per 1s
ratings: 100 requests per 1s

IBM Cloud Kubernetes Service | ©2018 IBM Corporation
Delay Injection
Inject 7 second delay

IBM Cloud Kubernetes Service | ©2018 IBM Corporation
Fault Injection
jason: Return with Error 500

IBM Cloud Kubernetes Service | ©2018 IBM Corporation
Circuit Breaking
Max 1 concurrent
connection & request

IBM Cloud Kubernetes Service | ©2018 IBM Corporation
Telemetry

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Artificial intelligence is changing how businesses operate. Companies are using AI agents to automate tasks, reduce time spent on repetitive work, and focus more on high-value activities. Noah Loul, an AI strategist and entrepreneur, has helped dozens of companies streamline their operations using smart automation. He believes AI agents aren't just tools—they're workers that take on repeatable tasks so your human team can focus on what matters. If you want to reduce time waste and increase output, AI agents are the next move.

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Want to learn practical tips for designing systems that can scale efficiently without compromising speed? Join us for a workshop where we’ll address these challenges head-on and explore how to architect low-latency systems using Rust. During this free interactive workshop oriented for developers, engineers, and architects, we’ll cover how Rust’s unique language features and the Tokio async runtime enable high-performance application development. As you explore key principles of designing low-latency systems with Rust, you will learn how to: - Create and compile a real-world app with Rust - Connect the application to ScyllaDB (NoSQL data store) - Negotiate tradeoffs related to data modeling and querying - Manage and monitor the database for consistently low latencies

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AI Changes Everything – Talk at Cardiff Metropolitan University, 29th April 2...Alan Dix

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