INDEX

• Introduction

• Starting up with Heroku

• Develop, Create, Deploy, Launch

• Exploring more on Heroku

• Buildpacks, Process Model, Procfile, Add-ons, Pipeline, Review apps

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INTRODUCTION

ABOUT

• Cloud – PaaS

• Heroku activities

• Server Management

• Deployment and dependencies

• Scaling

• Developer activities

• Develop code

• Tell Heroku about needed dependencies

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TERMS

• Dyno and Dyno hours

• Heroku Toolbelt

• Buildpack

• Deployment

• Add-ons

• Buttons

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STARTING UP

DEVELOPING THE APPLICATION

• Node.js

• PHP

• Python

• Java

• Go

• Others or your own

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Creating a new dyno gives:

1. Unique dyno

2. Unique public URL - With app_name if specified

- Otherwise random URL

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> heroku create <app_name>

CREATING DYNO

App can be deployed through:

1. Heroku Git (default)

2. GitHub

3. Dropbox

Automatic processes:

• Detects the app

• Installs all necessary dependencies

• Creates runtime environment

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> heroku git:remote –a <app_name>

> git add .

> git commit –m “first commit message”

> git push heroku master

DEPLOYING THE APP

App can be deployed through:

1. Heroku Git

2. GitHub

3. Dropbox

Features:

• View code diffs in GitHub

• Configure deployment way• Automatic deploys

• Manual deploy

• Enable review apps for new pull request

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> git remote add origin <github repo URL>

> git add .

> git commit –m “first commit message”

> git push origin <branch_name>

DEPLOYING THE APP

App can be deployed through:

1. Heroku Git

2. GitHub

3. Dropbox

Actions:

• Dropbox folder and Heroku Git are synced

• Needs manual or forced deployment

• Collaborator’s folders also gets synced automatically

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> git push heroku master

DEPLOYING THE APP

• Launch the URL manually or through CLI

https://<app_name>.herokuapp.com

Features:

• All herokuapp domains are SSL certified

• Custom domains need its own SSL certification

• Except free dyno, all other plans have no sleep time

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> heroku open

LAUNCHING THE APP

EXPLORING MORE

• Deployed code to execute in dyno

• Heroku officially supports 11

• Automatically detects using .json file

• Multiple buildpacks allowed

Other options:

• Custom third-party buildpacks can be added

• Custom buildpacks can be created using API

• Buildpack can be specified while creating a new app

• Buildpack can be explicitly set in app.json

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> heroku buildpacks

> heroku buildpacks:set <buildpack_name/URL>

> heroku buildpacks:remove <buildpackname/URL>

> heroku buildpacks:add –index 1 <name/URL>

BUILDPACKS

• Dynos are instantiated from process type

• Contains• Web process – regular process

• Worker process – worker duty for web

• Clock process – scheduled jobs

• Dynos – vertical scalingProcess – horizontal scaling

• Application with more than one end-points make use of process types

• Scheduling processes can run in worker and main application in web process

• Can be declared in .Procfile

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> heroku ps

> heroku ps:scale web=2 worker=4 clock=1

PROCESS MODEL

• Used to declare commands to run by the dyno to start the application

• Declares the process type• Web process

• Worker process

Explanation:

• <process type>• Web

• Worker

• Clock

• <command>• Command to launch the

process

• Node / php / sh …

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<process type>: <command>

web: node server.js

PROCFILE

• Components / service built on top of Heroku core

• Third-party add-ons make developers task easier

• Available from free to various plans

Features:

• Can be shared

• Name can be aliased

• Can be destroyed

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> heroku addons:create <service_name>

> heroku addons:attach <ser_name> --as <alias>

> heroku addons:detach <alias_name>

> heroku addons:destroy <service_name>

ADD-ONS

• Group of apps sharing same code base• Review

• Development

• Staging

• Production

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> heroku plugins:install heroku-pipelines

> heroku pipelines:create –a <pipeline_name>

> heroku pipelines:add –a <pipeline_name>

> heroku pipelines:promote –r staging

PIPELINE

• Runs the code for every GitHub pull request

• Deployed in disposable app environment

• Each app has a unique public URL

• Configured as:• Automatically create apps

• Destroy after 5 days when no deploys

• Configure addons, config_vars in app.json

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REVIEW APPS

QUESTIONS & CLARIFICATIONS

THANK YOU