Az-204 App Service Plan

Advantage of Built in authentication

.Azure App Service allows you to integrate a variety of auth capabilities into your web app or API without implementing them yourself. .It's built directly into the platform and doesn't require any particular language, SDK, security expertise, or even any code to utilize. .You can integrate with multiple login providers. For example, Azure AD, Facebook, Google, Twitter.

function app run time support are

.NET core node JS java python PowerShell core

Each App Service plan defines:

.Region (West US, East US, etc.) .Number of VM instances .Size of VM instances (Small, Medium, Large) .Pricing tier (Free, Shared, Basic, Standard, Premium, PremiumV2, PremiumV3, Isolated)

To create any azure service we need

1. Subscription 2.Region 3. Resource groups 4. OS

How to add azure configuration in web application

1. create the key vault in app configuration in azure 2. Web application add the microsoft azure configuration for .net core using npm 3. program.cs in createhostbuilder add the bindings

types of logging

Application logging web server logging deployment logging detailed error logging track logs on real time

to add TlS/ssl settings

Azure has option to create certificate and add it to site using bindings. Or upload the certificate

Deployment slots can created using

Azure portals or CLI

Languages supported by azure function are

C# Javascript Java F# python powershell

run docker containers

Docker on a VM Azure Kubernetes Service Azure Fabric Service Azure App Service

To refer Function App connection string in Visual studio created function user

Environment.EnvironmentVariable("SQLAZURECONSTR_(prefix required)+ connection string name

cloud service model

IAAS PAAS SAAS

Async methods in c# instead of out parameter we should use

IAsyncCollector

Azure function logs class in c#-tracewriter is upgraded to

ILogger

KEDA

Kubernetes Event-Driven autoscaling. helps to set autoscaling for docker container

logging can be found in ---- section of azure web application

Monitoring

Function authorization and authentication is in which section of portal? Advantages of enabling function app authorization and authentication

Networking supports all authentication and authoriztion supported by portal-like microsoft signin, facebook, google..

App Service Plan

Reserved Servers Predictable monthly cost

examples for type of deployment slots

Staging, production....

Deployment slots are only available in the

Standard and Premium plan tiers

Isolate your app into a new App Service plan when:

The app is resource-intensive. You want to scale the app independently from the other apps in the existing plan. The app needs resource in a different geographical region.

workers

The roles that host the customer workload are called

consumption pricing tiers

This tier is only available to function apps. It scales the functions dynamically depending on workload

isolated-pricing tiers

This tier runs dedicated Azure VMs on dedicated Azure Virtual Networks. It provides network isolation on top of compute isolation to your apps. It provides the maximum scale-out capabilities.

Property used to set the proxies in local, portal

WEB_HOST

Types of triggers are

actions like http requests timer message blob creation...

orchestrator function executes

activity function

authentication levels for functions are

anonymous function admin

security for azure functions

api keys indentity provider

App configuration is used

appsetting to be applied for more than one application features to turn on or turn off them

azure cli command for deployment is

az functionapp deployment source config -g MyResourcegroup -n myfunctionapp -src myZip.zip

command line command to create a configuration

az webapp config set

command line command to create a web app of type html

az webapp up --location <location> --name <appln name> --html

Azurewebjobsstorage

azure function run time uses storage connection string except http triggered functions. storage should be general purpose like blob, queues and tables

Azure function code can be in

azure portal -code region visual studio-function in azure portal will NOT have the copy of this file Azure function core tools

cors can be configured in Azure using

azure portal-react or html proj web application under api select cors and enable+ add the source api url cli-az powershell webapp cors....allowed-origin url

TLS binding minimum service plan required is

basic

Hosting containers advantages

can be hosted in on premises or in another cloud provider containers can be hosted Azure -Azure container instance(ACI) -Azure kubernetes service(AKS)

Limitations on hosting function in containers

cannot use consumption pln -Auto scaling has to be done manually

pros of server less application

cheaper, simpler and scalable

Etags in task result parameter helps to prevent

concurrency issues

function hosting models

consumption plan app service plan premium plan Docker container

Azure App Service is a

distributed system

How to validate doamin ownership

domain register site using cname map azure url to domain name click validate again in custom domain and it takes about 10 minutes

pros of azure function

eliminate repetitive boiler plate code focus on core business logic

proxies in portal

environment variable

application logging can be

file sytem-12hrlimit blob

test environment alone minimum service plan required is

free tier

two ways to access application and web server loggings are

ftp to logs url provided in log tab log stream

Azure Functions Core Tools command to start localhost

func start

when do you use query parameter

http get method

when do you get value from body of the request body raw json data

http post method

Azure function in Docker- using image

images out of the box are Azure function dotnet-c#, F# Azure function node for javascript, Azure function python

Function authorization level option in function authorization how it is authorized

in Manage section of the function portal add key at function key (only for a function) or host keys (applies to all the function in the function app) same function/host can have multiple keys-u can use it for different companies or different departments etc Each function call from VScode-pass the the key values in header or in body

Consumption plan

is serverless per second billing 1000000 executions 400000 GB

Azure functions code has

json part--saves the bindings, appsettings required, methods-get or post, run.csx part

zip deployment

kudu api Azure function core tools Azure cli

proxies in local is set in

localsettings.json

Function log error

log errors in web application level or in function log-file storage-/LogFiles/Application/Functions

Azure function can be deployed using

manually git zip

Can a function have more than one trigger

no. exactly one trigger

To add azure features in web app

npm install feature management and use it in program

to find all the possible outbound ip addresses

possibleoutboundipaddresses az webapp show --resource-group <group_name> --name <app_name> --query possibleOutboundIpAddresses --output tsv

premium plan

pre-warned instances VNet integration longer run duration

cloud deployment model

public hybrid private

bindings supported by azure function are

queue, cosmos dB blob storage service bus table storage send grid

changes to function appsettings results in

restart of functions

front ends

roles that handle incoming HTTP or HTTPS requests are called

proxies for azure functions

route incoming requests static website transforms requests and responses

if the function code is built using VS what are changes you will see in azure portal

run.csx file option does not exist function.json file has the scriptfile (dll path)and entrypoint(function name namespace) params

additional features app function

security durable functions proxies

Add custom dns name minimum service plan required is

shared

few categories of pricing tiers

shared compute dedicated compute isolated consumption

why use Azure function

speed up development Reduce cost scale automatically

to create different environment minimum service plan required is

standard

Autoscaling minimum service plan required is basic -

standard basic sacling can be upto 3 but we have to do manually

triggers used for durable function are

starter function orchestrator function( executes) activity function

logging requires

storage configured in azure

To create azure function app we have to define

subscription Resource group runtime-stack url-should be unique publish method-code or docker region storage account plan type-function permium or app service plan operating system

Azure Durable function

to execute a workflow or to run multiple methods in parllel and final function is executed only when all parllel methods/function are done retries and error handling

function apps

unit of deployment share common configuration scale together logically related

proxy-function app

use different name for each function or direct to different destination-like access blob storage add/ remove headers for requests or responses or change body uses proxies.json

application insights

useful for debugging and monitoring sites

can Azure function run on App Service plan

yes. Azure function can run on App Service plan

How to add custom domain?

you have to register a domain name outside azure like godaddy In web app select custom domain option enter the domain name and verify. Now you have to validate domain ownership using cname or txt

Advantage of checking run as package file in VS publish tag

zip file is not unzipped. It is directly used without unzipping while using the app. So it is easy to switch between different version. portal configuration section-Website_run_from_Package