AnsibleBuilding a Docker-ized Microservice In Node, Using Ansible - AnsibleFest NY 2015

Building a Docker-ized MicroserviceIn Node, Using Ansible

Irakli'Nadareishvili,'

Director'of'Strategy,'API'Academy

@inadarei

2 ©#2015#CA.#ALL#RIGHTS#RESERVED. @inadarei

Containers

Microservices

DevOps Automation

Being a Developer Has Never Been More Fun!


Microservices: The Next Big Thing…


What are Microservices?


Martin Fowler:

6 http://martinfowler.com/articles/microservices.html

“We#cannot#say#there#is#a#formal#definition#of#the#microservicesarchitectural#style,#but#we#can#attempt#to#describe#what#we#see#as#common#characteristics#for#architectures#that#fit#the#label.#�

6 ©#2015#CA.#ALL#RIGHTS#RESERVED.

EVOLUTIONARY3DESIGN

Characteristics of a Microservice Architecture per Fowler:

COMPONENTIZATION3VIA3SERVICES

ORGANIZED3AROUND3BUSINESS3CAPABILITIES

PRODUCTS,3NOT33PROJECTS

SMART3ENDPOINTS3AND3DUMB3PIPES

DECENTRALIZED3GOVERNANCE3&3DATA3MANAGEMENT

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INFRASTRUCTURE3AUTOMATION/DESIGN3FOR3FAILURE6

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In Essence:Microservice)Architectural)Style)is)an)architectural)style)where)a)complex)system)decomposed)into)a)collection)of)services)that)are:

1. Autonomous)and)independently)deployable2. Small)and)easily)replaceable.3. And)each)service)delivers)a)distinct)capability)of)the)system.

Single Responsibility Principlemeets

API-First Design


Key Benefits of MicroservicesTechnology#HeterogeneityPartitioned#Scalability#(per#microservice)Independent#DeploymentsCompose6abilityOptimized#for#Replace6ability

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We Know It Is Popular:


Microservice Architectureis complex

Uncomfortable truth:


Monolith is brittle, but has order


Microservices: High Degree of Freedom


A Lot Of Things That Can Go Wrong

Gilt.com says)they)have)~450,microservices.)

Netflix is)also)in)several,hundred.)That's)a)very)high)degree)of)freedom)– many,)many)moving)parts.


How do we afford so many servers?


Microservices Deployment Topology

Tanker1

12

34

Tanker2

12

33

Tanker3

1

23

4

Tanker4

1

34


Microservices Are Not Free Lunch


Microservices Deployment Topology

Tanker1

12

34

Tanker2

12

33

Tanker3

1

23

4

Tanker4

1

34


How Do We Know Where Everything Is?1. Hashicorp Consul – multiGdataGcenter!

(Vagrant))G https://www.consul.io/

2. CoreOS')etcdhttps://github.com/coreos/etcd

3. Kubernetes by)Googlehttp://kubernetes.io/

4. Mesos DNS)https://github.com/mesosphere/mesosGdns

5. Apache)Zookeeperhttps://zookeeper.apache.org/


Microservice Discovery Topology

Tanker1

12

34

Tanker2

12

33

Tanker3

1

23

4

Tanker4

1

34

Consul3Server3C

luster

ms1.service.consul


For#the#sake#of#this#demo#we#use#Docker NginxProxy#– lifesaver#for#local#(dev)#setups.#But#in#production,#we#would#use#separate#Nginxcluster#and#Consul#Template

Our Deployment PlanConsul#Server#Cluster#(3#servers)Consul#Clients#(2#servers#w/#Consul#Template)DNSMasq on#Consul#ServersProvision#Docker Hosts#(Tankers)Install#Node.js Microservice#from#docker.io

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http://nodebootstrap.io


github.com/apiacademy/ansible-consul-demo







DEMO TIME

Director#of#Strategy,#API#Academy

Irakli3Nadareishvili

@inadarei

@apiacademy

@cainc

Internet

AnsibleBuilding a Docker-ized Microservice In Node, Using Ansible - AnsibleFest NY 2015