continuous delivery with jenkins, docker and exoscale

Continuous Delivery with Jenkins, Docker and

ExoscaleJulia Mateo

@juliamateodc@duchessswiss http://jduchess.ch/

Thursday, April 16, 15

Goal

Thursday, April 16, 15

Continuous deployment vs Continuous Delivery

• Continuous delivery : series of practices designed to ensure that code can be rapidly and safely deployed to production

• Continuous deployment is the next step of continuous delivery: Every change that passes the automated tests is deployed to production automatically

Thursday, April 16, 15

Continuous Delivery

Source : http://xebia.github.io/cd-with-docker/#/

Thursday, April 16, 15

What is Docker ?

• Open platform for developers and sysadmins to build, ship, and run distributed applications.

From https://www.docker.com/whatisdocker/

Thursday, April 16, 15

Docker vs VMs

Server

Host OS

Hypervisor

GuestOS

Guest OS

Guest OS

Guest OS

Libs/Bins

Libs/Bins

Libs/Bins

App 1 App 2 App 3 App 4

Libs/Bins

Server

Host OS

Docker Engine

Libs/Bins Libs/Bins

App 1 App 2 App 3 App 4

c1 c2 c3 c4

VM1 VM2 VM3 VM4

Thursday, April 16, 15

Containers and images

DockerImages Docker

Images

libcontainer, Union Filesystem

Centos Ubuntu

Jetty

add App.war

Container 1

OracleDB

Container 2

Read only

WritableWritable

Read only

Thursday, April 16, 15

Using Docker for Continuous Delivery

• Simple : container as deployment unit

• Fast : Only need to build/upload the ∆ image

• Robust : less scope of error than custom deployment scripts

• Other advantages : docker facilitates fast rollback

Thursday, April 16, 15

Deploy with Docker : test environment

Localhost

docker publish plugin

ssh jenkins plugin

Node 1

Node 2

Thursday, April 16, 15

Deploy with Docker : test environment

Localhost

docker publish plugin

ssh jenkins plugin

Node 1

Node 2

Container 1

Container 2

Container 3

Container 4

Container 5

Thursday, April 16, 15

The web app to deploy

Thursday, April 16, 15

Deploy with Docker : test environment

Localhost

Thursday, April 16, 15

Deploy with Docker : test environment

Localhost

Thursday, April 16, 15

Deploy with Docker : test environment

Localhost

Thursday, April 16, 15

Deploy with Docker : test environment

Localhost

Thursday, April 16, 15

Deploy with Docker : test environment

Localhost

Thursday, April 16, 15

Deploy with Docker : test environment

Localhost

docker publish plugin

Thursday, April 16, 15

Deploy with Docker : test environment

Localhost

docker publish plugin

ssh jenkins plugin

Thursday, April 16, 15

Deploy with Docker : test environment

Localhost

docker publish plugin

ssh jenkins plugin

Thursday, April 16, 15

Docker publish plugin

Thursday, April 16, 15

Using Docker into Docker

Thursday, April 16, 15

Deploy with Docker : test environment

Localhost

docker publish plugin

ssh jenkins plugin

Thursday, April 16, 15

Deploy with Docker : test environment

Localhost

docker publish plugin

ssh jenkins plugin

Thursday, April 16, 15

Docker private repository

• Add the registry’s location to the repository name : my.registry.address:port/repositoryname

Thursday, April 16, 15

Deploy with Docker : test environment

Localhost

docker publish plugin

ssh jenkins plugin

Thursday, April 16, 15

Deploy with Docker : test environment

Localhost

docker publish plugin

ssh jenkins plugin

Thursday, April 16, 15

Jenkins ssh plugin

Thursday, April 16, 15

SSH agent forward into a docker container

>> docker run --privileged=true -i -t -v $(readlink -f $SSH_AUTH_SOCK):/ssh-agent -e SSH_AUTH_SOCK=/ssh-agent -v /home/hortis/docker/jenkins:/jenkins -p 8900:8080 --link sonarMysql:sonar_mysql --link sonar:sonar --link docker-registry:docker-registry -d hortis/jenkins:latest

Thursday, April 16, 15

SSH agent forward into a docker container

>> docker run --privileged=true -i -t -v $(readlink -f $SSH_AUTH_SOCK):/ssh-agent -e SSH_AUTH_SOCK=/ssh-agent -v /home/hortis/docker/jenkins:/jenkins -p 8900:8080 --link sonarMysql:sonar_mysql --link sonar:sonar --link docker-registry:docker-registry -d hortis/jenkins:latest

Thursday, April 16, 15

Demo

Thursday, April 16, 15

Multi container apps• Link containers with alias

docker run -v /home/hortis/docker/sonar/logs:/opt/sonar/logs/ -v /home/hortis/docker/sonar/extensions:/opt/sonar/extensions -p 9000:9000 --link sonarMysql:mysql --name sonar -d hortis/sonar:latest

• Use docker compose (old Fig)

Thursday, April 16, 15

Deploying to production

• Canary releasing

• Blue Green deployment

Thursday, April 16, 15

Blue Green Deployment

DatabaseWeb app

DatabaseWeb appWeb app Database

Web app Database

Userrequests

Router

Old Version

New Version

Source : http://martinfowler.com/bliki/BlueGreenDeployment.html

Thursday, April 16, 15

Canary releasing

DatabaseWeb app

DatabaseWeb appWeb app Database

Web app Database

Userrequests

Router

Old Version

New Version

Most users95%

Some users5%

Source : http://martinfowler.com/bliki/CanaryRelease.html

Thursday, April 16, 15

Thank you !

QUESTIONS

?

Thursday, April 16, 15