THE ROUTE TOWARDS CLOUD AUTOMATION

THE ROUTE TOWARDS CLOUD AUTOMATION

SIMPLY EVERY ENGINEER’S DESIRE TO USE THE FORCE

... CLOUD ...

... AUTOMATION

SO LIKE ...

And why you should careWho am I?

Automate the Cloud at

On the internet as..

@jcrugzz

and why this mattersWhat is Nodejitsu?

We execute

untrusted user code in the cloud using a system of..

Microservices

Words that I likeVocabulary

Determinism

Computers act consistently

Non-determinismComputers begin to be affected by Quantum properties and begin to act

inconsistently.

CLOUD AUTOMATION FOR MICROSERVICES

From one we have manyMicroservices and SOA

Monolithic Web Service Collection of Microservices

From one we have manyMicroservices and SOA

Monolithic Web Service Collection of Microservices

MICROSERVICES AND SOA TURN HARD COUPLING INTO LOOSE(R) COUPLING

ONE DOES NOT SIMPLY

SCALE ... ANYTHING

Patterns for scaling service architecturesMicroservices and SOA

Monolithic Web Service

Our only choice is to replicate the WHOLE SERVICE

AGAIN ...

... AND AGAIN ...

... AND AGAIN

Patterns for scaling service architecturesMicroservices and SOA

Microservices and SOA

` When you have them separated.. You can scale ...

EACH ...

... ONE ...

... INDIVIDUALLY

YO DAWG I HEARD YOU LIKE MICROSERVICES

SO I PUT A GEOENCODING SERVICE IN A QUEUE SERVICE IN A FACEBOOK SERVICE IN A TWITTER SERVICE SO YOU CAN USE MICROSERVICES WHILE YOU USE MICROSERVICES

YO DAWG I HEARD YOU LIKE MICROSERVICES

SO I PUT A GEOENCODING SERVICE IN A QUEUE SERVICE IN A FACEBOOK SERVICE IN A TWITTER SERVICE SO YOU CAN USE MICROSERVICES WHILE YOU USE MICROSERVICES

DON’T GET CARRIED AWAY

Unix philosophy for software servicesMicroservices and SOA

Unix Philosophy

Do one thing and one thing well

Modularity and reusability

Streams!

SIMPLICTY!

"We should have some ways of connecting programs like garden hose--screw in another segment when it becomes necessary to massage data in another way. This is the way of IO also.” !—Doug McIlroy. October 11, 1964

Unix philosophy for software servicesMicroservices and SOA

Unix Philosophy

Do one thing and one thing well

Modularity and reusability

Streams!

SIMPLICTY!

"We should have some ways of connecting programs like garden hose--screw in another segment when it becomes necessary to massage data in another way. This is the way of IO also.” !—Doug McIlroy. October 11, 1964

It’s kind of like “small modules”Microservices and SOA

Node and Microservices

They go hand in hand

Products not projects - Martin Fowler

Think MODULE === Microservice

API Simplicity

Problems and illusionsMicroservices and SOA

`

Illusions?

Silver Bullet Better Availability

Easier Scaling

Eliminates SPOFProblems

You now have N number of SPOF

More moving parts

Increased surface area for failure

Overall increase in non-determinism

Problems and illusionsMicroservices and SOA

`

Illusions?

Silver Bullet Better Availability

Easier Scaling

Eliminates SPOFProblems

You now have N number of SPOF

More moving parts

Increased surface area for failure

Overall increase in non-determinism

BUT ITS ALL OK! !

Everything has tradeoffs !

Nothing is Perfect

SAY MICROSERVICES

ONE MORE TIME!

SAY MICROSERVICES

ONE MORE TIME!

BUT SERIOUSLY...

Lets Make things Complicated

Because I said so

How many services do we have?!DevOps Mania

When things go wrong

` What happens when services go down..

ONE ...

... BY ...

... ONE

YES. YES IT IS

WE HAVE MONITORING

CALM DOWN

Get all the dataMonitoring: Collect Metrics

What do we collect?ALL THE METRICS!LogsMemoryRequests

Apps

Metrics!Cluster

What if we were generating data

and not using it at all?

What are we looking atMonitoring. Next steps

Assess the data

Metrics!Cluster

StrategiesStore the dataGraphs are your friend

Apps

Find trends and bridge correlations

Data Store

“As intelligence goes up, happiness goes down. See, I made a graph. I make lots of graphs.” - Lisa Simpson

“As intelligence goes up, happiness goes down. See, I made a graph. I make lots of graphs.” - Lisa Simpson

“As intelligence goes up, happiness goes down. See, I made a graph. I make lots of graphs.” - Lisa Simpson

Act Now!

Do something!Monitoring: Now what?

Metrics!Cluster

Actions to take Fix somethingScale up/down

Apps

Remove server from pool

Data Store

Take Action

“Action” Services

BRACE YOURSELVES

IT’S STORY TIME

Lets fix thingsSSH Micro-service

Metrics!Cluster

It is all in the simplicityIdentified problemCrafted a solutionPut together the pieces to fix it

An action

SSH Service

Load Balancer

Dead App

Fix it

FIX IT! FIX IT! FIX IT!

Welcome to distributed systemsWhat’s the problem?

Metrics!Cluster

Simplicity can lack flexibilityNo built in fault tolerance to serviceUses a local queue that doesn’t scaleBut this is still all fixable

Not distributed

SSH Service

Load Balancer

Dead App

Fix it

How do they work?

Distributed Systems

Use a distributed approachHow do we fix this?

Metrics!Cluster

Scale with a particular approachMake distributed

SSH Service

Load Balancer

Dead App

Fix it

Use a distributed approachHow do we fix this?

Metrics!Cluster

Scale with a particular approachUse a proven distributed protocol (raft)Use a working module or implement itRead the white paper and test

Make distributed

SSH Service

Load Balancer

Dead App

Fix it

Leader ElectionRaft: Distrubuted Consensus

A consensus AlgorithmLog replicationLeaders, Followers, CandidatesLeader election and failover

What is Raft?

Reading white papers

PapersDistributed Systems

Yes we should read themYes they are hardReading once is just the beginningConsider it like stretching

Reading?

OMG

BUT IM OVERWHELMED

Take a deep breathDistributed Systems

SIMPLICITYStart smallImportance of modulesEverything in stages

RELAX

Demo Architecture

DOGE FOR DEMO

github.com/jcrugzz/empirenode-demo

THE END

Jarrett Cruger - @jcrugzz