Skip to main content

Azure VM

 Introduction

Azure Virtual Machines is one of several types of on-demand, scalable computing resources that Azure offers. Typically, you'll choose a virtual machine if you need more control over the computing environment than the choices such as App Service or Cloud Services offer. Azure Virtual Machines provide you with an operating system, storage, and networking capabilities and can run a wide range of applications.

Virtual machines are part of the Infrastructure as a Service (IaaS) offering. IaaS is an instant computing infrastructure, provisioned and managed over the Internet. Quickly scale up and down with demand and pay only for what you use.


Scenario

Suppose you work for a company doing consumer research and you're responsible for managing the on-premises servers. The servers you administer run all the company infrastructure, from web servers to databases. However, the hardware is aging and starting to struggle to keep up with some of the new data analysis applications being deployed to it. Rather than upgrade the hardware, the company has decided to deploy Azure virtual machines.

You are responsible for deploying the new virtual machines. Your deployment tasks will include correctly sizing the machines, selecting storage, and configuring networking.

Learning objectives

  • Create a virtual machine planning checklist.
  • Determine virtual machine locations and pricing models.
  • Determine the correct virtual machine size.
  • Configure virtual machine storage.

cloud services responsibilities


IaaS business scenarios

  • Test and development
  • Website hosting
  • High-performance computing
  • Extended Datacenter
  • Big data analysis
  • Storage, backup, and recovery
Note: Considerations for the location

  • The location can limit your available options. Each region has different hardware available and some configurations are not available in all regions.
  • There are price differences between locations. If your workload isn't bound to a specific location, it can be very cost effective to check your required configuration in multiple regions to find the lowest price.

Resizing virtual machines

Azure allows you to change the VM size when the existing size no longer meets your needs. You can resize a VM if your current hardware configuration is allowed in the new size. This provides a fully agile and elastic approach to VM management.

When you stop and deallocate the VM, you can select any size available in your region.


Note:

Be cautious when resizing production VMs. Resizing may require a restart that can cause a temporary outage or change configuration settings like the IP address.

Operating system disks


Temporary disk

Every VM contains a temporary disk, which is not a managed disk. The temporary disk provides short-term storage for applications and processes and is intended to only store data such as page or swap files. Data on the temporary disk may be lost during a maintenance event or when you redeploy a VM. During a standard reboot of the VM, the data on the temporary drive should persist. However, there are cases where the data may not persist, such as moving to a new host. Therefore, any data on the temp drive should not be data that is critical to the system.

  • On Windows virtual machines, this disk is labeled as the D: drive by default and it used for storing pagefile.sys.
  • On Linux virtual machines, the disk is typically /dev/sdb and is formatted and mounted to /mnt by the Azure Linux Agent.

Data disks

A data disk is a managed disk that's attached to a virtual machine to store application data, or other data you need to keep. The size of the virtual machine determines how many data disks you can attach to it and the type of storage you can use to host the disks.

Managed vs Unmanaged Disks.





Labels:

Comments

Post a Comment

Popular posts from this blog

Jenkins

Pre-requisites 1. Install a Webserver https://gitlab.com/Azam-devops/webserver/-/blob/main/README.md Code for index.html https://gitlab.com/Azam-devops/webserver 2. Maven Code https://gitlab.com/Azam-devops/imperial-maven-project 1. Install & configure Jenkins Automation Server on Linux Vm. 2. Go through at some of the important options in Jenkins. 3. Manage Jenkins. 4. Plugins 5. Global Tools Configuration. 6. Credentials 7. Users 8. Slave Nodes 9. Configuring CI pipeline using Gitlab. 10. Configuring standalone CICD pipeline using. 11. Automating the CICD pipeline. 12. Jenkins log 13. Introduction to Jenkins file. 14. Basic groovy syntax & file formation. 15. Launching a Pipeline using Jenkins file. 3. DevOps Architecture Description of above DevOps plan. Create Maven based source code in Gitlab. Create a Jenkins job which will execute below stages. Checkout code from Gitlab Build/compile the source code using Maven as a build tool. scan the code virtually. Test...
Post a Comment
Read more

Docker In Details

  Course Contents:- 1. Overview of Docker 2. Difference between Virtualization & Containerization 3. Installation & Configuration of Docker Runtime on Linux & Windows 4. Practice on Docker commands 5. launch a Webserver in a container 6. Launch public & official images of application like Jenkins, Nginx, DB etc.. 7. Launch a base OS Container 8. How to save changes inside the container & create a fresh image(commit) 9. How to ship image & container from one hardware to another. 10. How to remove stop/rm multiple container/images 11. Docker Registry 12. Docker Networking       Check current docker network                  Docker Network Bridge                     Docker Network Weaving                  Launch our own Docker Cluster with our defined Network             ...
Post a Comment
Read more

Ansible

  Ansible is an open-source software provisioning, configuration management, and application-deployment tool. It runs on many Unix-like systems, and can configure both Unix-like systems as well as Microsoft Windows. It includes its own declarative language to describe system configuration. Ansible was written by Michael DeHaan and acquired by Red Hat in 2015. Ansible is agentless, temporarily connecting remotely via SSH or Windows Remote Management (allowing remote PowerShell execution) to do its tasks. Platform support Control machines have to be a Linux/Unix host (for example SUSE Linux Enterprise, Red Hat Enterprise Linux, Debian, CentOS, macOS, BSD, Ubuntu, and Python 2.7 or 3.5 is required. Managed nodes, if they are Unix-like, must have Python 2.4 or later. For managed nodes with Python 2.5 or earlier, the python-simplejson package is also required. Since version 1.7, Ansible can also manage Windows nodes. In this case, native PowerShell remoting supported by the WS-Managemen...
Post a Comment
Read more

Basic Linux Commands

  Linux Command Cheat Sheet Hello All, Below are the most common commands used in a day to day life of  linux user. if you are new to linux i will recommend you to go through all of the commands.  this commands will help you to troubleshoot linux issues.   Command Description ls Lists all files and directories from present working directory ls-R Lists files in sub-directories ls-a to list down hidden files. ls-al Lists files and directories with complete details like permissions, size, owner cd or cd ~ To go back to home directory cd .. Move one level up cd To change to a particular directory cd / Move to the root directory cat > filename Creates a new file cat filename Displays the content of a file cat file...
Post a Comment
Read more

Kubernetes-Update

                                                    https://kubernetes.io/ Kubernetes (K8s)  is an open-source system for automating deployment, scaling, and management of containerized applications. It groups containers that make up an application into logical units for easy management and discovery. Kubernetes builds upon  15 years of experience of running production workloads at Google , combined with best-of-breed ideas and practices from the community. Latest Verion:-  1.19 Kubernetes Objects Kubernetes defines a set of building blocks ("primitives"), which collectively provide mechanisms that deploy, maintain, and scale applications based on CPU, memory or custom metrics. Kubernetes is loosely coupled and extensible to meet different workloads. This extensibility is provided in large part by the Kubernetes API, which is used by int...
Post a Comment
Read more