Connect To An Instance In A Private Subnet on Cloud

If you ever worked with cloud and configured different subnet, there will be public and private subnet, both having a different number of servers, for the public or even private have you also wonder how to access the environment without associate the VM to Public IP, in this post I will show you how.

For the figure shows one of the simple example of that, In this post you will learn how to connect to an instance that is hosted in a private subnet

The first thing you need, install Pageant

After that, open the software and add the public key to this software , enter the password

Once you add the key, it will be appear inside the program you can close it

Now you can use putty and configure the software like the follwing, You are now connected to the instance in public subnet through agent forwarding.

From the public subnet you can simply SSH to to private subnet easily.

Cheers

Osama

Cloud Services Mapping For AWS, Azure, GCP ,OCI, IBM and Alibaba provider

This blog post is one of that kind that took much time and consume so much energy, to complete this post it took me around ten days to make sure that I will cover most of the available services and make it readable for people, Be sure the services can change while you are reading this post ; if you have any comments,or add something to this post, please send me an email – using contact us page or by comments below.

I am writing this post to share a different cloud providers services and the comparison between each one of them, this will show various naming services for each one of them.

Earlier we used to store our data to H.D.D or USB flash, Cloud Computing services have replaced such hard drive technology. Cloud Computing service is nothing but providing services like Storage, Databases, Servers, networking, and software through the Internet.

Cloud Computing is moving so fast, in 2020 the cloud now is more mature, going multi-cloud, and likely to become more focused on vertical and a sales ground war as the leading vendors battle for market share.

Notes :

  • GCP : Google Cloud Provider
  • OCI :- oracle cloud infrastructure
  • None : not meaning the services is not available necessarily by cloud provider but i didn’t look deeper into this or i didn’t use it before.

Marketplace

AWSAzureOCIGCPIBM CloudAliBaba Cloud
AWS MarketplaceAzure Marketplace Oracle Cloud MarketplaceGoogle Cloud Platform (GCP) MarketplaceIBM Marketplace Alibaba Cloud Marketplace 

AI and machine learning

AWSAzureOCIGCPIBM CloudAliBaba Cloud
SageMakerMachine LearningOCI Machine LearningGoogle Datalab Cloud AutoML (Alpha)
Cloud Machine Learning Services
Machine Learning Machine Learning Platform for AI 
Alexa Skills KitBot FrameworkOracle Digital AssistantGoogle AssistantNoneNone
Polly, TranscribeSpeech Services Bing Speech APINoneTranslation API
Speech API
NoneNone
LexSpeech ServicesOracle Chatbots Cloud Text-to-Speech DialogFlow Enterprise Edition (Beta) Natural Language APIWatson Assistant Intelligent Service Robot 
RekognitionCognitive ServicesNoneCloud Video Intelligence Vision APIVisual Recognition Image Search 
Skills KitVirtual AssistantNoneNoneNoneNone
Amazon ComprehendLanguage Understanding (LUIS)NoneCloud Text-to-Speech DialogFlow Enterprise Edition (Beta)
Natural Language API
Visual RecognitionImage Search

Big data and analytics

AWSAzureOCIGCPIBM CloudAliBaba Cloud
RedshiftSynapse Analyticsoracle autonomous data warehouseBigQueryDb2 Warehouse Alibaba MaxCompute ODPS 
Lake FormationData ShareNoneNoneNoneNone
Amazon EMRHDInsight Data Lake Storage
Oracle Big Data Service
Cloud DataProcAnalytics Engine E-MapReduce Service 

Data orchestration / ETL

AWSAzureOCIGCPIBM CloudAliBaba Cloud
Data Pipeline, GlueData Factory Data CatalogData IntegratorCloud DataPrep Cloud ComposerDataStage DataWorks  Data Integration 
Dynamo DBTable Storage, Cosmos DBNoSQL DatabaseCloud Datastore Cloud BigTableCloudant NoSQL DB  Compose for JanusGraph 
Databases for MongoDB 
Apsaradb for Mongodb  Table Store 

Analytics and visualization

AWSAzureOCIGCPIBM CloudAliBab Cloud
Kinesis AnalyticsStream Analytics
 Data Lake Analytics
Data Lake Store
Event Hub (Apache Kafka as a Service)Cloud DataflowStreaming AnalyticsNone
QuickSightPower BIData Visualization Business IntelligenceGoogle Data StudioWatson studio Data IDE 
CloudSearchCognitive SearchNoneNoneNoneNone
AthenaData Lake AnalyticsNoneBigQuerySQL QueryE-MapReduce Service

Compute

AWSAzureOCIGCPIBM CloudAliBaba Cloud
Elastic Compute Cloud (EC2) InstancesVirtual MachinesComputeCompute EngineClassic Virtual Server Alibaba ECS
BatchBatchNonePreemptible VMsIBM Cloud FunctionsBatch Compute 
Auto ScalingVirtual Machine Scale SetsAuto ScalingAuto ScalerAuto Scaling Auto Scaling 
VMware Cloud on AWSVMware by CloudSimpleNoneNoneNoneNone
Parallel ClusterCycleCloudCluster Networkingslurm gcpNoneNone
Amazon EC2 – I3.metalNoneCompute – Bare MetalNoneNoneNone
Amazon EC2 – P2, P3, G3 instancesAzure N-SeriesOracle Cloud Infrastructure Compute – GPUGoogle GPUNoneNone

Containers and container orchestrators

AWSAzureOCIGCPIBM CloudAlibaba Cloud
Elastic Container Service (ECS)Container InstancesOracle Cloud Infrastructure RegistryContainer RegistryIBM Cloud Container Registry Container Registry 
Elastic Kubernetes Service (EKS)Kubernetes Service (AKS)Container Engine for Kubernetes (OKE) Kubernetes Engine IBM Cloud Kubernetes Service Container Service for Kubernetes 
App MeshService Fabric MeshNoneGoogle Istio Service MeshNoneNone

Serverless

AWSAzureOCIGCPIBM CloudAlibaba Cloud
LambdaFunctionsOracle FunctionsGoogle Cloud FunctionsIBM Cloud Functions Function Compute 

Database

AreaAWSAzureOCIGCPIBM CloudAlibaba Cloud
Relational databaseRDSSQL Database Database for MySQL
Database for PostgreSQL
Oracle Database Cloud Service
MySQL Service 
Cloud SQL  Cloud Spanner Db2 
Db2 Hosted  Informix  Databases for PostgreSQL  Compose for MySQL(Beta
ApsaraDB for RDS MYSQL  ApsaraDB for RDS SQL Server  ApsaraDB for RDS PostgreSQL  Distributed Relational Database Service (DRDS) 
NoSQL / Document DynamoDB
SimpleDB
Amazon DocumentDB
Cosmos DBNoSQL Database Cloud Datastore  Cloud BigTable Cloudant NoSQL DB  Compose for JanusGraph  Databases for MongoDB ApsaraDB for RDS MYSQL  ApsaraDB for RDS SQL Server  ApsaraDB for RDS PostgreSQL  Distributed Relational Database Service (DRDS) 
CachingElastiCacheCache for RedisIn-memory OptionCloud MemoryStore (Beta) Informix HiTSDB (High-Performance Time Series Database) 
Database migration Database Migration ServiceDatabase Migration ServiceMigrate to the Cloud NoneLift CLI Data Transmission Service 
Relational Database Management ServiceAuroraAzure SQL Database; Azure Cosmos DB  Oracle Autonomous Transaction ProcessingCloud SQL ; Cloud SpannerCloudant NoSQL DB  Compose for JanusGraph  Databases for MongoDB Apsaradb for Mongodb  Table Store 

DevOps and application monitoring

AWSAzureOCIGCPIBM CloudAlibaba Cloud
CloudWatch,
X-Ray
AWS Cloud9  AWS Code Star 
AWS CodeBuild  CodeDeploy CodeCommit CodePipeline
Monitor Azure Boards  Azure Pipelines  Azure Repos  Azure Test Plans  Azure Artifacts  DevOpsDeveloper Cloud Service Cloud Source Repositories  Cloud Build Continuous Delivery  DevOps Insights  Globalization Pipeline None
Developer ToolsDeveloper ToolsDeveloper Cloud Service Cloud Source Repositories  Cloud Build Continuous Delivery  DevOps Insights  Globalization Pipeline None
Command Line InterfaceCLI PowerShellOCI CLICloud Shell  Cloud Console NoneAlibaba Cloud CLI 
OpsWorks (Chef-based)AutomationOracle Orchestration Cloud Service NoneNoneResource Orchestration Service 
CloudFormationResource Manager
VM extensions
Azure Automation Azure Building Blocks
Stack Manager Cloud Resource Manager  Cloud Deployment ManagerSchematics Resource Orchestration Service 

Internet of things (IoT)

AWS AzureOCIGCPIBM CloudAlibaba Cloud
IoTIoT HubInternet of Things Cloud Service Cloud IoT Core (Beta)  Google Cloud IoT Internet of Things Platform IoT Platform 
GreengrassIoT Edge Azure IoT SDKNoneNoneNoneNone
Kinesis Firehose
Kinesis Streams
Event Hubs Azure Stream Analytics Event Hub (Apache Kafka as a Service) Cloud Dataflow Streaming Analytics None
IoT Things GraphDigital TwinsNoneNoneDigital TranscodingApsaraVideo Live 
AWS IoT ButtonAzure SphereNoneNoneNoneNone

Management

AWSAzureOCIGCPIBM CloudAlibaba Cloud
Trusted AdvisorAdvisorNoneGoogle Cloud Platform Security NoneNone
Usage and Billing ReportBilling APIOracle Management ConsoleBilling API NoneAlibaba Cloud CLI 
Management ConsolePortalConsolePortal/ConsoleConsoleConsole
Application Discovery ServiceMigrate Azure Active Directory NoneNoneNoneNone
EC2 Systems ManagerMonitorOracle Management Cloud NoneNoneNone
Personal Health DashboardResource Health Azure Monitor Oracle Management Cloud NoneNoneCloud monitoring, Notification and Alerts 
CloudTrailMonitorApplication Performance Monitoring Google StackDriver  Monitoring  Logging Error Reporting  Trace  Debugger Application Performance Monitoring CloudMonitor 
Cost ExplorerCost ManagementOracle Management Cloud NoneNoneNone
CloudWatchApplication InsightsApplication Performance MonitoringGoogle StackDriver 
Monitoring 
Logging
Error Reporting 
Trace 
Debugger 
IBM Cloud Log Analysis with LogDNA CloudMonitor

Messaging and eventing

AWSAzureOCIGCPIBM CloudAlibaba Cloud
Simple Queue Service (SQS) Amazon MQ Queue Storage Service Bus Service Bus topics Service Bus relayIntegration Messaging Cloud Pub/SubEvent Steams Message Queue 
Simple Notification ServiceEvent Grid Azure Notification ServicesMessaging Firebase Cloud MessagingPush Notifications Short Message Service (SMS) 
Amazon SESMarketplace – EmailOracle Cloud Infrastructure Email DeliveryPartnersSendgrid Direct Mail 

Mobile services

AWSAzureOCIGCPIBM CloudAlibaba Cloud
Mobile HubApp Center Xamarin AppsMobile & ChatbotsCloud Mobile AppMobile FoundationNone
Mobile SDKApp Center
Azure Mobile SDK,Offline/Sync Azure DevTest Labs (Back End) Hockey App
Mobile Cloud ServiceCloud Tools for Android StudioNone
Amazon PinpointAzure Mobile EngagementNoneNoneMobile FoundationNone
CognitoApp CenterMobile Cloud Service Cloud Tools for Android StudioApp ID None
Mobile AnalyticsHockey App Mobile Cloud Service Firebase Analytics Mobile Foundation None

Networking

AreaAWSAzureOCIGCPIBM CloudAlibaba cloud
Cloud virtual networkingVirtual Private Cloud (VPC)Virtual NetworkOracle Virtual Cloud Network Virtual Private CloudIBM Cloud VPC on Classic Virtual Private Cloud 
Cross-premises connectivityAmazon VPN VPN Gateway VPN Connect Cloud VPN Classic IPSEC-VPN VPN Gateway 
DNS Managment Route 53DNSOracle DNS Cloud DNS Internet Services Alibaba Cloud DNS 
Global Traffic ManagmentAmazon Route 53 Traffic Flow Azure Traffic Manager OCI Traffic Management NoneInternet Services None
Dedicated networkDirect ConnectExpressRouteFast Connect Cloud InterConnect Direct Link Express Connect 
Load balancingElastic Load BalancingLoad BalancerOracle Load Balancer Cloud Load Balancing IBM Cloud Load Balancing Server Load Balancer 

Security, identity, and access

AWSAzureOCIGCPIBM CloudAlibaba Cloud
Identity and Access Management (IAM)Azure Active Directory
Role Based Access Control
Identity Cloud IAM Identity & Access Management Resource Access Management 
OrganizationsSubscription Management + RBAC
Policy
Management Groups
Audit NoneResource Group None
Multi-Factor AuthenticationMulti-Factor AuthenticationMulti-factor authenticationMulti-factor authenticationMulti-factor authenticationMulti-factor authentication
Directory ServiceAzure Active Directory Domain ServicesNoneNoneNoneNone
CognitoAzure Active Directory B2CMobile Cloud Service Firebase Authentication

App ID None

Encryption

AWSAzureOCIGCPIBM cloudAlibaba Cloud
Server-side encryption with Amazon S3 Key Management ServiceAzure Storage Service EncryptionNonenoneNoneNone
Key Management Service (KMS)
CloudHSM
Key VaultKey ManagementCloud Key Management Service Key Protect Key Management Service 

Firewall

AWSAzureOCIGCPIBM CloudAlibaba Cloud
Web Application FirewallWeb Application Firewall
Firewall
Web Application Firewall NoneInternet Services Web Application Firewall 

Security

AWSAzureOCIGCPIBM CloudAlibaba Cloud
InspectorSecurity CenterConfiguration and Compliance Service NoneInfrastructure Vulnerability Scan None
Certificate ManagerApp Service Certificates available on the PortalNoneCloud Key Management Service Key Protect Key Management Service 
GuardDutyAdvanced Threat ProtectionNoneNoneNoneNone
ArtifactService Trust PortalComplianceCloud Security Command Center (Alpha) NoneAlibaba Truster Center 
ShieldDDos Protection ServiceOracle Cloud Infrastructure DDoS ProtectionCloud Armor (Beta) Internet Services DDOS Pro and Basic 

Storage

AWSAzureOCIGCPIBM CloudAlibaba Cloud
Simple Storage Services (S3)Blob storageObject Storage Cloud Storage Cloud Object Storage Object Storage Service 
Elastic Block Store (EBS)managed disksBlock Storage Persistent Disk Block Storage Block Storage

Elastic File SystemFilesOCI File Storage File Store File Storage NAS File Storage 
S3 Infrequent Access (IA)Storage cool tierNoneNoneNoneNone
S3 GlacierStorage archive access tierArchive Storage Cloud Storage Object Storage-ColdVault Object Storage Archive 
BackupBackupNoneNoneNoneNone
Storage GatewayStorSimple
Storage Software Appliance NoneNoneHybrid Cloud Storage Array 
DataSyncFile SyncNoneNoneNoneNone

Bulk data transfer

AWS AzureOCIGCPIBM CloudAlibaba Cloud
Import/Export DiskImport/Export
Data Transfer Services – Hard Disk Import NoneData Transfer Service None
Import/Export c
Snowball Edge
Snowmobile
Data BoxData Transfer Services – Storage applicance import Transfer Appliance (Beta) Mass Data Migration Service Data Transport 

Web applications

AWSAzureOCIGCPIBM CloudAlibaba Cloud
Elastic BeanstalkApp ServiceApplication Container Cloud 
Java Cloud Service 
Google App engine Cloud Foundry Apps Enterprise Distributed Application Service 
API GatewayAPI ManagementAPI Platform Cloud EndpointsAPI Connect API Gateway 
CloudFrontContent Delivery NetworkNoneCloud CDN Content Delivery Network Alibaba Content Delivery Network 
Global AcceleratorFront DoorNoneNoneNoneNone
LightSailApp ServiceNoneNoneClassic Virtual Server 
Virtual Server for VPC 
Simple Application Server 

Miscellaneous

AreaAWSAzureOCIGCPIBM CloudAlibaba Cloud
Backend process logicStep FunctionsLogic AppsFunctions
App Engine IBM Cloud Functions None
Enterprise application servicesWorkMailWorkDocsOffice 365NoneG Suite
NoneNone
GamingGameLiftGameSparksPlayFabNoneNoneNoneNone
Media transcoding
Elastic TranscoderMedia ServicesNoneNoneDigital TranscodingApsaraVideo Live 
WorkflowSimple Workflow Service (SWF)Logic AppsData Integrator Cloud DataPrep (Private Beta) 
Cloud Composer (Beta) 
DataStage 
Watson Knowledge Catalog 
DataWorks
Data Integration  
HybridOutposts
Stack
Cloud At Customer Anthos NoneNone
MediaElemental MediaConvertMedia ServicesNoneNoneDigital Transcoding
ApsaraVideo Live 
Region Availability Zone (AZ)Availability Zone (AZ)Availability Domain (AD)Zonesavailability zonesZones

Disaster Recovery Services

AWSAzureOCIGCPIBM CloudAlibaba Cloud
AWS Disaster Recovery Azure Site Recovery Oracle Database Backup 
DR Site
NoneNoneAlibaba Disaster Recovery 
Hybrid Backup Recovery 

Enjoy

Cheers

Osama

OCI, AWS and Azure services in One pictures

Just quick post to show and share what services for each cloud provider, be notice that the services can be change while we are talking now, and this is not a complete list of services but it’s only shows the basic one.

OCI Services

Oracle Cloud Iinfrastructure Services

Amazon AWS

Amazon AWS services

Microsoft Azure

Cheers

Osama

Azure Resource quick guide

In gernal,

load balancer distributes traffic evenly among each system in a pool. A load balancer can help you achieve both high availability and resiliency.

Say you start by adding additional VMs, each configured identically, to each tier. The idea is to have additional systems ready, in case one goes down, or is serving too many users at the same time.

Azure Load Balancer is a load balancer service that Microsoft provides that helps take care of the maintenance for you. Load Balancer supports inbound and outbound scenarios, provides low latency and high throughput, and scales up to millions of flows for all Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) applications. You can use Load Balancer with incoming internet traffic, internal traffic across Azure services, port forwarding for specific traffic, or outbound connectivity for VMs in your virtual network.

When you manually configure typical load balancer software on a virtual machine, there’s a downside: you now have an additional system that you need to maintain. If your load balancer goes down or needs routine maintenance, you’re back to your original problem.

Azure Application Gateway

If all your traffic is HTTP, a potentially better option is to use Azure Application Gateway. Application Gateway is a load balancer designed for web applications. It uses Azure Load Balancer at the transport level (TCP) and applies sophisticated URL-based routing rules to support several advanced scenarios.

Benefits

  • Cookie affinity. Useful when you want to keep a user session on the same backend server.
  • SSL termination. Application Gateway can manage your SSL certificates and pass unencrypted traffic to the backend servers to avoid encryption/decryption overhead. It also supports full end-to-end encryption for applications that require that.
  • Web application firewall. Application gateway supports a sophisticated firewall (WAF) with detailed monitoring and logging to detect malicious attacks against your network infrastructure.
  • URL rule-based routes. Application Gateway allows you to route traffic based on URL patterns, source IP address and port to destination IP address and port. This is helpful when setting up a content delivery network.
  • Rewrite HTTP headers. You can add or remove information from the inbound and outbound HTTP headers of each request to enable important security scenarios, or scrub sensitive information such as server names.

What is a Content Delivery Network (CDN)?

A content delivery network (CDN) is a distributed network of servers that can efficiently deliver web content to users. It is a way to get content to users in their local region to minimize latency. CDN can be hosted in Azure or any other location. You can cache content at strategically placed physical nodes across the world and provide better performance to end users. Typical usage scenarios include web applications containing multimedia content, a product launch event in a particular region, or any event where you expect a high-bandwidth requirement in a region.

DNS

DNS, or Domain Name System, is a way to map user-friendly names to their IP addresses. You can think of DNS as the phonebook of the internet.

How can you make your site, which is located in the United States, load faster for users located in Europe or Asia?

network latency in azure

Latency refers to the time it takes for data to travel over the network. Latency is typically measured in milliseconds.

Compare latency to bandwidth. Bandwidth refers to the amount of data that can fit on the connection. Latency refers to the time it takes for that data to reach its destination.

One way to reduce latency is to provide exact copies of your service in more than one region, or Use Traffic Manager to route users to the closest endpoint, One answer is Azure Traffic Manager. Traffic Manager uses the DNS server that’s closest to the user to direct user traffic to a globally distributed endpoint, Traffic Manager doesn’t see the traffic that’s passed between the client and server. Rather, it directs the client web browser to a preferred endpoint. Traffic Manager can route traffic in a few different ways, such as to the endpoint with the lowest latency.

Cheers

Osama

Terraform for Oracle Cloud infrastructure

This post provide steps for downloading and installing both Terraform and the Oracle Cloud Infrastructure Terraform provider.

Terraform Overview

Terraform is “infrastructure-as-code” software that allows you to define your infrastructure resources in files that you can persist, version, and share. These files describe the steps required to provision your infrastructure and maintain its desired state; it then executes these steps and builds out the described infrastructure.

Infrastructure as Code is becoming very popular. It allows you to describe a complete blueprint of a datacentre using a high-level configuration syntax, that can be versioned and script-automated, Terraform can seamlessly work with major cloud vendors, including Oracle, AWS, MS Azure, Google, etc

Download and Install Terraform

In this section, i will show and explain how to download and install Terraform on  your laptop/PC Host Operating System, you can download using the below link :-

Terraform Download
  • After you download the terraform, Unzip the Terraform to whatever location you want to run it from. Then, add that location to your OS PATH.
    • Windows : By adding to Path –> environment variables
    • Linux : Profile –> export Path

You can check by run the CMD and check the version:-

Check Terraform commands

Download the OCI  Terraform Provider

Prerequisites:-

  • OCI User credentials that has  sufficient permission to  execute a Terraform plan.
  • Required keys and Oracle Cloud Infrastructure IDs (OCIDs).
  • The correct Terraform binary file for your operating system

Installing and Configuring the Terraform Provider

In my personal opioion about this section (The title of the section same as Oracle Documentation) I found it wrong, i worked with Terraform in different cloud vendor, AWS, Azure and OCI so Terraform will recognize it and automatically install the provider for you.

to do that, all of you have to do is create folder , then create file “variables.tf” that only contains

provider "oci" {<br>}

and run terraform command

terraform init

Now Let’s Talk small examples about OCI and Terraform, First you have to read “Creating Module” to understand the rest of this post here.

I will upload to my Github here Small Sample for OCI Terraform to allow you underatand how we can use it instead of the GUI and make it easy for you.

I upload to my github example of Terraform for OCI Proiver, In the this example i will create autonomous database but not using the GUI,

to work with Terraform, you have to understand what is the OCI Provider and the parameters of it.

The Terraform configuration resides in two files: variables.tf (which defines the provider oci) and main.tf (which defines the resource).

For more terraform examples here

Configuration File Requirements

Terraform configuration (.tf) files have specific requirements, depending on the components that are defined in the file. For example, you might have your Terraform provider defined in one file (provider.tf), your variables defined in another (variables.tf), your data sources defined in yet another.

Some of the examples for Terraform files here

Provider Definitions

The provider definition relies on variables so that the configuration file itself does not contain sensitive data. Including sensitive data creates a security risk when exchanging or sharing configuration files.

To understand more about provider read here

provider "oci" {
   tenancy_ocid = "${var.tenancy_ocid}"
   user_ocid = "${var.user_ocid}"
   fingerprint = "${var.fingerprint}"
   private_key_path = "${var.private_key_path}"
   region = "${var.region}"
}

Variable Definitions

Variables in Terraform represent parameters for Terraform modules. In variable definitions, each block configures a single input variable, and each definition can take any or all of three optional arguments:

  • Type (Optional): Defines the variable type as one of three allowed values: string, list, and map. If this argument is not used, the variable type is inferred based on default. If no default is provided, the type is assumed to be string
  • Default (Optional) : Sets the default value for the variable. If no default value is provided, the caller must provide a value or Terraform throws an error.
  • Description (Optional) : A human-readable description of the variable.

More information here

For example

variable "AD" {
    default     = "1"
    description = "Availability Domain"
}

Output Configuration

Output variables provide a means to support Terraform end-user queries. This allows users to extract meaningful data from among the potentially massive amount of data associated with a complex infrastructure.

More information here

Example

output "InstancePublicIPs" {
value = ["${oci_core_instance.TFInstance.*.public_ip}"]
}

Resource Configuration

Resources are components of your Oracle Cloud Infrastructure. These resources include everything from low-level components such as physical and virtual servers, to higher-level components such as email and database providers, your DNS record.

For more information here

One of the example :-

resource "oci_core_virtual_network" "vcn1" {
   cidr_block = "10.0.0.0/16"
   dns_label = "vcn1"
   compartment_id = "${var.compartment_ocid}"
   display_name = "vcn1"
}

Data Source Configuration

Data sources represent read-only views of existing infrastructure intended for semantic use in Terraform configurations, for example Get DB node list

data "oci_database_db_nodes" "DBNodeList" {
  compartment_id = "${var.compartment_ocid}"
  db_system_id = "${oci_database_db_system.TFDBNode.id}"
}

Another example, Gets the OCID of the first (default) vNIC


data "oci_core_vnic" "DBNodeVnic" {
  vnic_id = "${data.oci_database_db_node.DBNodeDetails.vnic_id}"
}

Follow me on GitHub here

Cheers

Osama

Apply for Oracle exam extension

As we already know oracle has been providing free exam and materials for siz track like the following till 15 May 2020: –

and because of the high demand since there are not available slot anymore, Oracle now providing extension BUT you have to apply for this

Follow this Video :-

How to ask for extension

Enjoy

Osama

Create Your First VM with Azure Cloud In different ways

To create your first server/VM on Azure cloud, you have different ways to do that :-

  • Azure Resource Manager
  • Azure PowerShell
  • Azure CLI
  • Azure REST API
  • Azure Client SDK
  • Azure VM Extensions
  • Azure Automation Services

The Azure portal is the easiest way to create resources such as VMs, i will describe each one of them,

The first way which is The Portal here, to do this it’s very simple :-

  • Click on the Create a resource option in the top-left corner of the portal page.
  • Use the Search the Marketplace search bar to find “Ubuntu Server” for example.
  • Press on Create , then new page will be open.
  • Configure the VM, by enter the name, the region, The Subscription,Availability options
  • There are several other tabs you can explore to see the settings you can influence during the VM creation. Once you’re finished exploring, click Review + create to review and validate the settings.
  • On the review screen, Azure will validate your settings. You might need to supply some additional information based on the requirements of the image creator.


This is was the first way to create the VM which is consider the easiet one also.

Azure Resource Manager

assumig you want to create a copy of a VM with the same settings. You could create a VM image, upload it to Azure, and reference it as the basis for your new VM,Azure provides you with the option to create a template from which to create an exact copy of a VM.

You can do this, after create the VM –> Setting –> export template.

Azure PowerShell

Azure PowerShell is ideal for one-off interactive tasks and/or the automation of repeated tasks, note that PowerShell is a cross-platform shell that provides services like the shell window and command parsing.

New-AzVm  -ResourceGroupName "TestResourceGroup"  -Name "test-wp1-eus-vm"  -Location "East US"  -VirtualNetworkName "test-wp1-eus-network"  -SubnetName "default"  -SecurityGroupName "test-wp1-eus-nsg"  -PublicIpAddressName "test-wp1-eus-pubip"  -OpenPorts 80,3389

Azure CLI

The Azure CLI is Microsoft’s cross-platform command-line tool for managing Azure resources such as virtual machines and disks from the command line. It’s available for macOS, Linux, and Windows, this is also found in Different cloud vendor for example For Amazon it’s called aws cli, for Oracle it’s Called OCI-CLI and Google it’s called GCP-CLI.

az vm create --resource-group TestResourceGroup --name test-wp1-eus-vm --image win2016datacenter --admin-username osama --admin-password anything

Programmatic (APIs)

This is no my expertise so i will no go deep dive with it, But we were talking about Azure CLI and powershell, you can install something called Azure REST API and start using differen programing language to deal with Azure, i did this with python for AWS using Boto3 module, i post about it before here.

The same can be done for Azure or any Cloud vendor.

Azure VM Extensions

Azure VM extensions are small applications that allow you to configure and automate tasks on Azure VMs after initial deployment. Azure VM extensions can be run with the Azure CLI, PowerShell, Azure Resource Manager templates, and the Azure portal.

Thank you

Osama Mustafa

Cloud Talk : How much my IaaS will cost on the cloud ?

When the company will move to the cloud, the biggest question to ask , how much it will cost ? there are different ways to determine your IaaS cost, but at first you need to know that PaaS and IaaS much cheapter than IaaS, Each cloud vendor having their own calculator so at least you can estimate the value for one year or understand how much it will cost ? which is good.

Azure

Let’s Start with Azure for example ( since i post a lot about it recently )

When you are estimate the price for any cloud you should take different factors in your mind such as the following :-

  • Region
  • Tier it’s free , Basic … etc
  • How will the clinet/customer pay ? monthly , Yearly , Pay as you go .. etc
  • Supprot for the cloud which option you will choose
  • The deployement princing for example in Azure Dev/test .. etc

Now Azure provides the client with real pricing calculator that allow people to estimate the cost, From here.

to use the portal you should know what services you will choose, and some esstinal information such as How many VM, Database, networking, after you add all the information the report will be generated depends on the period of paying.

But what if i want to move from On Premis to the cloud , is this tool will work ? Total Cost of Ownership or TCO from here

The TCO Calculator helps you understand the cost areas that affect your applications today, such as server hardware, software licenses, electricity, and labor by Define the following :-

  • Servers : -details of your current on-premises
  • Databases :- on-premises database infrastructure
  • Storage :- on-premises storage infrastructure
  • Networking :- on-premises environment

The Genterated report will be like this :-

Amazon

As i already mentioned each Cloud vendor having different apporach of Cloud Pricing but it’s all the same, in AWS you can access the pricing from here , also they have somthing called SIMPLE MONTHLY CALCULATOR From here.

When you generate an estimate, you can either add services directly to your estimate or create a group and add the services to your group.

The AWS Pricing Calculator is an estimation tool that provides an approximate cost of using AWS services based on the usage parameters that you specify. The AWS Pricing Calculator is not a quote tool, and does not guarantee the cost for your actual use of AWS services. The cost estimated by the AWS Pricing Calculator may vary from your actual costs for a number of reasons. Common reasons the estimate may be different from your actual cost include different thing such as Actual Usage, Region used, Change in price, Taxes ( depends on the Region ) .. etc

Oracle

From Oracle , the portal is very simple to use, you can estimate everything using this portal here from Infrastcure cost, database, Application, … etc .

Cheers

Osama

Encryption on Azure

What is encryption?

Encryption is the process of making data unreadable and unusable to unauthorized viewers. To use or read the encrypted data, it must be decrypted, which requires the use of a secret key. 

There are two different type :-

  • Symmetric encryption :– Which mean you will use same key  to encrypt and decrypt the data
  • Asymmetric encryption :– Which mean you will use different key , for example Private and public key.

both of these two type having two different ways :-

  • Encryption at rest which mean data stored in a database, or data stored in a storage account.
  • Encryption in transit which means  data actively moving from one location to another.

So, there are different type of Encryption provided by Azure:-

  • Encrypt raw storage
    • Azure Storage Service Encryption :-  encrypts your data before persisting it to Azure Managed Disks, Azure Blob storage, Azure Files, or Azure Queue storage, and decrypts the data before retrieval.
    • Encrypt virtual machine disks low-level encryption protection for data written to physical disk
  • Azure Disk Encryption : this method helps you to encruypt the actually windows or Linux disk, the best way to do this is h Azure Key Vault.
  • Encrypt databases
    • Transparent data encryption :- helps protect Azure SQL Database and Azure Data Warehouse against the threat of malicious activity. It performs real-time encryption and decryption of the database.

The best way to do this which is Azure Key Vault,  cloud service for storing your application secrets. Key Vault helps you control your applications’ secrets by keeping them in a single, why should i use it :-

  • Centralizing the solutions.
  • Securely stored secrets and keys.
  • Monitor access and use.
  • Simplified administration of application secrets.

There are also two different kind of certificate in Azure which will helps you to encrypt for example the website or application, you need to know that Certificates used in Azure are x.509 v3 and can be signed by a trusted certificate authority, or they can be self-signed.

Types of certificates

  • Service certificates are used for cloud services
  • Management certificates are used for authenticating with the management API

Service certificates

which is attached to cloud services and enable secure communication to and from the service. For example, if you deploy a web site, you would want to supply a certificate that can authenticate an exposed HTTPS endpoint. Service certificates, which are defined in your service definition, are automatically deployed to the VM that is running an instance of your role.

Management certificates

allow you to authenticate with the classic deployment model. Many programs and tools (such as Visual Studio or the Azure SDK) use these certificates to automate configuration and deployment of various Azure services. However, these types of certificates are not related to cloud services.

Be noted that you can use Azure Key Vault to store your certificates.

Cheers

Osama

Where is the DBA in the DevOps tools ?

  • Database administrator job has been changed and it’s not like before any more, In the past The DBA responsibility was limited within database which mean troubleshooting, backup , Performance tuning, high availability .. etc after few years new layer has been added to the responsibility which is application server layer for example weblogic ,Oracle embedded the weblogic with most of their products such as enterprise manager cloud, E-business suits, as i remember after three years another layer added to DBA knowledge which is virtualization and regarding to this virtualization  made the DBA life more easier and not like before, solution providing another layer of backup and server management.

However now everything has been changed and the market working under new term which is CLOUD including different vendor AWS, Azure, and Oracle, As DBA your knowledge shouldn’t stop by only Database, within cloud there is new tools that can help the DBA with their daily Job and it’s called Devops.

DBA usually review each change request to ensure that it is well thought out,They are in charge of monitoring their databases and keeping them available and high-performing, manage access to and the overall security of the platform.

Database automation frees the DBA from the bottleneck of the past that delayed application releases since there is different environment production, Pre-Production, Development or Testing, the DevOps Automation relieved of the pressures of constantly having to juggle and merge various teams’ database changes, are now free to help their organisations take bigger steps forward in ongoing innovation.

But what is the Devops ? And How can i use to make my Job Easier

DevOps is the combination of cultural philosophies, practices, and tools that increases an organization’s ability to deliver applications and services at high velocity: evolving and improving products at a faster pace than organizations using traditional software development and infrastructure management processes. This speed enables organizations to better serve their customers and compete more effectively in the market.

Benefits of DevOps
  • Speed
  • Rapid Delivery
  • Reliability
  • Scale
  • Security

DevOps Practices

  • Continuous Integration
  • Continuous Delivery
  • Microservices
  • Infrastructure as Code
  • Monitoring and Logging
  • Communication and Collaboration
DevOps practices for DBA and Data Team focus on the Tools, practices and techniques that are useful for the Data team to use for Development activities, Testing setup and execution, Collaboration techniques and Deployment tools and techniques. The aim of this site is to further the practice and help the DBA’s and Data team to use these practices to become productive and become part of the delivery team and embrace the devops movement.
DevOps Tools
  • Docker
  • Jenkins
  • Ansible
  • Puppet
  • Nagios
  • Monit
  • Behat
  • Chef
There is more tools for sure each one of these tools having it’s own purpose for example Docker is one of the powerful container solutions, A container image is a lightweight, stand-alone, executable package of a piece of software that includes everything needed to run it: code, runtime, system tools, system libraries, settings Available for both Linux and Windows based apps, containerized software will always run the same, regardless of the environment. Containers isolate software from its surroundings, for example differences between development and staging environments and help reduce conflicts between teams running different software on the same infrastructure.
Cheers
Osama Mustafa