Year: 2023

AWS Account AWS Free tier account: for learning purposes with some services free for 12 months always free services free trails To create a free tier account Refer Here After your account is created. To login Refer Here AWS Simple Storage Service (S3) This is a blob storage service offered by AWS We can use… Continue reading AWS Classroom notes 31/Dec/2023

Docker contd Monolith All the business logic is developed as one single application In the below example the whole of ecommerce is developed as single application All the code is developed as one large code base Advantages: Convinient to build and deploy Disadvantages: Smaller changes also require downtimes All of the application should be in… Continue reading DevOps Classroom notes 31/Dec/2023

Azure Storage Account This is a service offered by Microsoft Azure to store Blobs Block Blobs: This is file (Blob) Page Blobs: This represnts virtual hard disk Append Blobs: This is used for storing logs File Share Table Storage Queue Storage Storage account has a naming convention Refer Here and the name of the storage… Continue reading Azure Classroom notes 31/Dec/2023

Infra Provisioning workshop Terraform provisioners Refer Here for official docs Possibilities with Infrastructure and deployment Virtual Machine based deployment create a ubuntu linux vm install java run springpetclinic as a service Terraform + Azure Refer Here for the template Exercise: Create a springpetclinic as a service Add variables Add workspaces Add tfvars per environment Terraform… Continue reading DevOps Classroom notes 30/Dec/2023

Cloud Storage Clouds charge for using storage (blob) as well as transfer sizes. Infrastructure Regions AZ (Availability Zone) Services Terms Redundancy: Having copies of data in various locations. SPOF (Single Point of Failure): Having one instance to store data. Durability Availability Latency Next Steps Job Roles First Steps into service.

Running an application Physical machine: Dependencies OS Softwares (java) application package Virtual machine Dependecies: Softwares application package Docker: Dependency: Docker image Story of Docker dotCloud was the organization working for PaaS products. To make the PaaS product work they have created docker docker become overnight success and dotcloud became Docker Inc Refer Here for the… Continue reading DevOps Classroom notes 30/Dec/2023

Azure Any cloud including azure hosts loads of infrastructure and they offer storage as a service. Generally storage costs are two fold size: The cost of this gets impacted by frequency of access data transfers Azure infrastructure: Refer Here Infrastructure Region: Regions with zones Regions PoP (Points of Presence) Storage Services: Storage Account Disks Snapshot… Continue reading Azure Classroom notes 30/Dec/2023

Storage Needs for an Enterprise Business Continuity & Disaster Recovery Backup and Archival storage Network Drives Disk Storage Databases Data Lakes Blob Storage ( Binary Large Object) Terms Backup: This is used for system failures and is expected to restore quickly RPO will be generally in hours to a day Archival: This is used for… Continue reading AWS Classroom notes 29/Dec/2023

Evolution of Running Applications Lets understand this by a hypotetical application ticketing platform Assumptions Users will be using browsers to access application Generation 1: Physical Machines Run the applications on Physical Servers Capex (upfront investment) and Opex (Ongoing costs) In under usage scenarios the system cannot be shared with other applications. Problem: Hardware is not… Continue reading DevOps Classroom notes 29/Dec/2023

Storage in Cloud Storage Needs in organization Backup and Recovery Needs Disk storage Single System Disks Network Disks (NAS, SAN) Databases Big Data/Data Lakes Blob Storage (Binary Large Object) Terms Backup: This refers to the solutions applied to recover quickly. The Backup will have recovery points less than one day. Is generally present in the… Continue reading Azure Classroom notes 29/Dec/2023