Azure Web Apps - WordPress.com...Kudu Troubleshooting and Analysis tools available for use within Azure Web Apps ‘Buddy site' to the real Azure site Runs in same sandbox but different

Azure Web Apps~Deep Dive

About Me

Vaibhav Gujral

http://vabgujral.wordpress.com

Twitter: @vabgujral

GitHub: vabgujral

Skype: vaibhav.gujral

[email protected]

Technical architect with 11+ years of

extensive experience in designing,

architecting, developing and delivering

enterprise class applications.

Building Azure Solutions since 2010

Full Stack Developer. Key skills include

.Net technologies, AngularJS, SQL

http://vabgujral.wordpress.com/

mailto:[email protected]

Agenda -

Azure App Services Overview

Azure App Service Plans

Azure Web Apps

Overview

Deploying Web Apps

Diagnostics & Monitoring

Networking support

Scaling Web Apps

Testing Web Apps

Azure App Service

Integrated Cloud App Platform for delivering apps across cloud and mobile

devices

Runs on fully managed virtual machines

No Remote desktop support

Azure App Services include the following services

Web Apps – That scale with your business

Mobile Apps – create mobile backend services for any device

Logic app – Automate business process across SaaS and on premises

API App – Easily build and configure

Full capability set available including:

.NET, Node.js, Java, PHP, and Python

WebJobs for long running tasks

Integrated VS publish, remote debug…

CI with GitHub, BitBucket, VSO

Auto-load balance, Autoscale, Geo DR

Virtual networking and hybrid connections

Site slots for staged deployments

Earlier called as “Web Sites”

New capabilities for Mobile apps:

Webjobs for long running tasks





Supports Push notifcations

Earlier called as “Mobile Services”

New Logic Apps for easy automation

No code designer for rapid creation

Dozens of pre-built templates to get started

Out of box support for popular SaaS and on-premises

apps

Use with custom API apps of your own

Biztalk APIs for expert integration scenarios

Easily use cloud or custom APIs:

Dozens of built-in APIs for popular SaaS

An ecosystem of APIs for any need

Create and publish custom, reusable APIs

Visual Studio tooling with one click publish and

remote debugging

Automatic client SDK generation for many languages

Azure App Service

All app types are part of Azure App Service

Each one can use the features of the others

No real difference except name and icon

All app types share the same native Azure features like Resource Manager, RBAC etc.

The word app refers to the hosting resources dedicated to running a workload.

If an application is composed of a web front end and a RESTful API back end we could:

Deploy both (front end and API) to a single web app

Deploy front-end code to a web app and back-end code to an API app

Azure App Service Benefits

Multiple languages and frameworks - App Service has first-class support for

ASP.NET, Node.js, Java, PHP, and Python. PowerShell and other scripts or

executables are supported on App Service VMs.

DevOps optimization – Supports continuous integration and deployment

with Visual Studio Team Services, GitHub, or BitBucket. Promote updates

through test and staging environments. Perform A/B testing. App Service

can be managed by using Azure PowerShell or the cross-platform

command-line interface (CLI).

Global scale with high availability – Can be scaled up or out manually or automatically. Apps can be hosted anywhere in Microsoft's global

datacenter infrastructure, and the App Service SLA promises high

availability.

Azure App Service Benefits

Connections to SaaS platforms and on-premises data - Choose from more

than 50 connectors for enterprise systems (such as SAP, Siebel, and Oracle),

SaaS services (such as Salesforce and Office 365), and internet services

(such as Facebook and Twitter). Access on-premises data using Hybrid

Connections and Azure Virtual Networks.

Security and compliance - App Service is ISO, SOC, and PCI compliant.

Application templates - Choose from an extensive list of application templates in the Azure Marketplace including popular open-source

software such as WordPress, Joomla, and Drupal.

Visual Studio integration - Dedicated tools in Visual Studio streamline the

work of creating, deploying, and debugging.

App Service Plans represent the collection of physical resources used to

host applications

App Service Plans include –

Region (Central US, West US etc.)

Scale count (one, two or three instances etc.)

Instance Size (S/M/L)

SKU(Free, Shared, Basic, Standard, Premium)

All applications within Azure App Service runs in an App Service Plan

Apps in same subscription, region and resource group can share an App

Service Plan

An app can be moved between App Service plans within same resource

group and geographical regions


An app should go into a new App Service plan when:

App is resource-intensive.

App has different scaling factors from the other apps hosted in an existing

plan.

App needs resource in a different geographical region.

App needs new set of resources

You need greater control on the app

App Service plan determines the cost and not the number of apps hosted

in it.


App Service Plans can be created-

Stand-alone

As Part of the app

NOTE-

App Service plans that have no apps associated to them still incur charges

since they continue to reserve the compute capacity.

To avoid unexpected charges, when the last app hosted in an App Service

plan is deleted, the resulting empty App Service plan is also deleted.


New-AzureRmAppServicePlan

Get-AzureRmAppServicePlan

Set-AzureRmAppServicePlan

Remove-AzureRmAppServicePlan

Powershell commands for Azure App

Service Plans

Demo

Azure Web Apps

Full capability set available including:

.NET, Node.js, Java, PHP, and Python

WebJobs for long running tasks

Integrated VS publish, remote debug…





Earlier called as “Web Sites”

Azure Web Apps Pricing





Creating Azure Web App using

Command Line options

The New-AzureRmWebApp cmdlet creates an Azure Web App in a given

resource group that uses the specified App Service plan and data center.

Powershell Commands for Web Apps

New-AzureRmWebApp

Remove-AzureRmWebApp

Set-AzureRmWebApp

Restart-AzureRmWebapp

Stop-AzureRmWebapp

Get-AzureRmWebAppPublishingProfile

Reset-AzureRmWebAppPublishingProfile

Creating Azure Web App using

Command Line options

The az webapp create cmdlet creates an Azure Web App in a given

resource group that uses the specified App Service plan.

Azure CLI Commands for Web Apps

az webapp browse

az webapp create

az webapp delete

az webapp list

az webapp restart

az webapp show

az webapp start

az webapp stop

Demo

Managing Application Settings

Managing Application Settings

Custom Domains

SSL Certificates

Demo

WebJobs

Run background long running programs or scripts in the same context

Three ways of running web jobs:

On-demand

Continuously

Scheduled

Cost covered in App Service

Azure WebJobs SDK supports common tasks like image processing, queue

processing, file maintenance, sending emails etc.

WebJobs SDK includes

Nuget Packages – for decorating methods with attributes

Dashboard – provides rich monitoring & diagnostics

WebJobs

Accepted file types include:

.cmd, .bat, .exe (using windows cmd)

.ps1 (using powershell)

.sh (using bash)

.php (using php)

.py (using python)

.js (using node)

.jar (using java)

WebJobs

Demo

Deployment Slots

Deploy to a separate deployment slot instead of the default production

slot

Supported in Standard or Premium tiers

Each slot has its own app hostname

App content and configuration can be swapped between two slots

Benefits

Validation of changes before moving to production

All instances are warmed up before swapping, ensuring zero downtime

Easy swap to “last known good site”

Continuous Deployment

Kudu

Troubleshooting and Analysis tools available for use within Azure Web Apps

https://xxxxxxxx.scm.azurewebsites.net

‘Buddy site' to the real Azure site

Runs in same sandbox but different process

Provides cmd and powershell console

View Streaming logs

Download memory dump

Verify environment variables and app settings

Web jobs & functions

Web hooks and deployment hooks

https://xxxxxxxx.scm.azurewebsites.net/

Kudu

Kudu Demo

App Service Editor – currently in preview

Visual Studio Support for Web

Apps


Apps


Apps


Apps


Apps

Remote Debugging

Visual Studio supports remote debugging

Set breakpoints or manipulate memory directly

Step through code or change the code path

Not supported in Express editions of Visual Studio

Also supported by continuous web jobs and not by scheduled/on-demand

Enable Remote Debugging in Azure portal

Remote Debugging

Application Insights

Extensible Application Performance Management (APM) service for web

developers on multiple platforms

Useful in monitoring live web applications

Pulls telemetry information such as performance counters, Azure

diagnostics etc

Supports .Net, NodeJs and J2EE

Supports apps deployed on-premises or in the cloud

Very minimal impact on app performance as tracking calls are non-

blocking, batched and sent in separate thread


Application Insights is aimed at the development team, to help you understand how your app is performing and how it's being used. It monitors:

Request rates, response times, and failure rates

Dependency rates, response times, and failure rates

Exceptions

Page views and load performance

AJAX calls

User and session counts.

Performance counters

Host diagnostics from Docker or Azure.

Diagnostic trace logs

Custom events and metrics



Scaling Web Apps

Two options:

Scale Up – Increase the VM size by getting more CPU, memory, disk space etc. Can be done by changing the pricing tier of the app service plan.

Scale Out – Increase the number of instances up to a maximum of 20 instances. Application. Can be done manually or automatically based on metrics like CPU percentage and memory utilization

Further, an App Service Plan can be scaled to accommodate-

Changes in Pricing Tier

Changes in Instance Size

Changes in Instance Count

Auto Scaling Web Apps

Auto Scaling Web Apps

Allowed Metrics: Allowed Operations:

Azure Traffic Manager

Load balance among app instances deployed across regions

Uses the following algorithms

Performance (Fastest)

Weighted (Round-robin)

Priority (Failover)

DNS based load balancer where clients connect directly to the endpoints

Traffic manager is resilient to failures including the failure of entire Azure

Region

Benefits include traffic distribution and endpoint health monitoring

Traffic Manager is not a proxy or a gateway

Azure CDN

Secure, reliable content delivery with global reach

Publicly available objects can be cached like images, style sheets, documents, files, html pages and client side scripts

CDN can also be utilized for serving dynamic content like PDF reports based on user inputs

Results in low latency and faster content delivery in comparison to the content delivery from data center where application is hosted

Helpful in reduction in application load resulting in improved application performance and scalability.

Helpful in bringing costs of content delivery down

Works with Azure blob storage, web apps, virtual machine, application folder, or other HTTP/HTTPS location

Azure CDN

Azure CDN POP Locations

Web App Backup

Create app backups manually or on schedule

Backups can be restored to a snapshot of a previous state by overwriting

existing app or restoring to another app

App Service can backup the following information to an Azure storage

account and container that you have configured your app to use.

App configuration

File content

Database connected to your app

Supported in Standard and Premium tiers

Backups can be up to 10 GB of size including app and database content

Web App Cloning

Clone existing apps to a newly created app

New app can be in same region or different region

Supported only in premium tier

Following settings are not copied in to the new app:

Azure Traffic Manager settings and Auto Scale Settings

Backup schedule settings

VNET settings

App Insights

Kudu Extension

Database Content

App Service Migration Assistant

http://movemetothecloud.net

Migrate web sites from Windows and Linux servers to Azure app service

Tool creates web app + database on Azure, if required

Supports Windows Server 2003 onwards

http://movemetothecloud.net/

App Service Environment

Premium service plan option of Azure App Service

Provides a fully isolated and dedicated environment for securely running

Azure App Service apps at high scale

Ideal for application workloads requiring:

Very high scale

Isolation and secure network access

ASEs can be created within a single Azure region or span across multiple

regions making it idle for horizontal scaling

Isolated for a single customer’s applications

Always deployed in a VNet

Hybrid Connections

Based on Azure Biztalk Services

Easy and convenient way to connect the app service to on premises

resources behind firewall

VNET Integration

Allows to place Azure web apps in a non-internet route-able network

having controlled access

App Service Environment is deployed into VNET

VNET Integration gives web app access to resources in virtual network but

does not grant private access to web app from the virtual network

Private site access is only available with an ASE configured with an Internal

Load Balancer (ILB)

Use case includes connecting Azure web app to a database or a web

service running on a virtual machine in Azure Virtual Network.

Part of standard or Premium tier

Supports TCP and UDP

VNET Integration

Performance Test

Performance test web apps for free in the Azure Portal

These tests simulate user load on the app over a specific time period

Measures app's response

Testing in Production

Live-testing web app using live customer traffic

Traffic Routing – A portion of live user traffic is directed to different

deployment slots and then the app data is analyzed using App Insights or

any other tools

Supported in Standard or Premium tier

Testing requires cookies to be enabled in user’s browser

Supports advanced TiP scenarios through Powershell cmdlets

Testing in Production

Demo

Documents

Azure Web Apps - WordPress.com...Kudu Troubleshooting and Analysis tools available for use within Azure Web Apps ‘Buddy site' to the real Azure site Runs in same sandbox but different