Azure Migration Event - snippet

Good day All,

Welcome back!!! i was sitting on a Azure migration event session, couple of take always Jeff mentioned i thought would mention for others in case you missed the event

1. Azure extend Network - Lets assume that for some reason you need to keep the same IP's for your application now its possible to extend the on-premise Subnet to Azure so that you can keep the Application IP's if required.

2. File Server Migration - Using the Windows Server  2019 Admin center  you can now migrate Windows File Server (Starting Source can be Windows 2003) to Azure Windows 2019 File Server how cool is that.


Couple of good recorded deep dive session can be found on the link below
https://vshow.on24.com/vshow/AMVE/exhibits/AMVE_Deep_Dives

Until next one you all have a good day!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

VM and Docker difference - Part 2

Welcome back!!!!

Before we go further in the docker lets understand the difference between docker and VM.

Virtual Machine	Docker
Full OS on each VM	Application and Libraries only, share host kernel
Large Form Factor	Small Form Factor
Large Storage disk	very small storage disk
Boot time in mints	Boot time in Seconds
Snapshots are used to roll back and increase storage cost	Images layers and versioning easily helps to rollback
Horizontal scaling only possible in the cloud and a lot of prerequisites to be followed	Orchestrater like Kubernetes does all the magic under the hood and in seconds
Irrespective of OS kernel you can have any different OS flavors running VM	Containers share the host kernel so different OS flavors like Windows, Unix you cant create
Complete Isolation
Security
Monitoring
Management tools
capacity and performance management

To overcome limitations like Isolation and security Hybrid approach can be possible, Confused???
Hybrid here means you create a Virtual Machine and install run Docker inside the Virtual machines.

A lot of things still are like work in progress in terms of docker and as time progress and we are about to see quick changes pretty soon in terms of deployments

going to end here now and Until next one, you all have a good day!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

What's my next certification????

Welcome back!!!!

A couple of weeks after I did my aws sysops I was very determined that the next one will be to crack AZ 103.

As I was doing Az103 I got sidetracked and started to read docker and orchestra engine Kubernetes and I started liking it and I realized I have  completely  stopped az103

At that point, I decided that my next certification would be Kubernetes  Administrator. 

Not sure how many people watched John wick 3, a bounty on the hero and all don's chasing to kill..here the bounty would be getting certification done and getting a job and all chasing are Unix admins, developers, architects, and Wintel admins.

Wintel admins I can compete but others is a challenge? Anyone saying Naveen what you talking ..here is the stats 98%, of current docker, Kubernetes  deployment  in production  are on  Unix

So you get certification and want to work then these are the people will try to crush you down...

Knock knock anyone slept through reading and started to watch John wick then I am sorry but I guess we all got the point here.

Anyhow decided to chunk along let's see how far I go for my bounty my certification first step.

As I get along reading and gathering will share to all if anyone wants to get along or just read when free...

Before we go to Kubernetes I would be spending a lot of time on docker trying to peel every bit of it to understand, so let's get started...

The next one to start in the blog would be docker 101 coming soon...

Until then you all have a good day!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1

Docker 101 - Part 1

Welcome back!!!!

We all pretty much understand Hypervisor which basically helps you build virtualization layer on top of physical Hardware whereas Docker engine brings to you Virtualization on top of an operating system by deploying and running applications without requiring a full virtual machine for each application, hope this makes sense

Tried to put a picture probably will give you all some insight

 Not sure if anyone else had this question but when I started with Docker was confused is it not  APP-V, Citrix, VMware Horizon does the same kind of... came across this excellent article so just go over it
https://www.docker.com/blog/app-virtualization-docker/

If anyone still trying to understand the difference between VM and Container, think of something like this, VM would be like you own a full independent bungalow and you don't share with anyone and image Container as an apartment in a big residential building where you are sharing resources with others.

Below is how Docker communication architecture would look:

 All interactions are done through Docker CLI which communicates with other resources and API calls.

As part of the series, I will break up here and continue in the next part.

Hopefully, this helps someone, Until next one you all have a good day!!!!!!!!!!!!!!!!!!!!!!!

2nd AWS Certification - cracked the SYSOPS - Associate

Good day All,

Welcome back Happy New Year to All!!!!!!......

 Completed by 2nd AWS certification that is SYSOPS, as a Windows  Solution Admin guy i wanted to ensure i cover this one before moving to next Certification.

Any followers have any questions on how to? and what you need for preparation? please ping and happy to help.

All i can say is Solution Architect Associate was the base foundation and just few more topics like Cloud Formation,System Manager,RDS you should be good to go for Sysops.

As you all know i started with Azure so thinking next one Certification in next 6 months should be AZ 103

Let see how it goes and keep you guys posted and if any one have any questions you know where to find me....

Until next one you all have a Good day!!!!!!!!!!!!!!!!!

First AWS Certification

Good day All,

Welcome back, got my first AWS certification Solution Architect Associate, hopefully with more to come

Took me about close to 3 months to crack this one, sharing below the tips i used

1. enrolled for the 12 months free subscription
2. Got my self a official AWS Study guide which as examples and steps to test
3. AWS FAQ super important
4. AWS digital training and videos
5. you tube videos and blogs

If anyone is looking for any specific questions you can ping me and will happy to share more insights.. till next one you all have a good day!!!!!!!!!!!!!!!!!!!!!!!!

High Availability vs Fault tolerance - moving to cloud

Good day All,

Welcome back!!!

The other day someone asked me the difference between High Availability vs Fault tolerance in the cloud.

Administrators supporting on premises Application and Servers would just say oh High Availability is having multiple servers  and if 1 goes down still you have another server.
If Fault tolerance then some one would say oh yeah Windows cluster one node is down and another node is available to Serve Application

Lot of Admins still get confused and always use both the terms as synonymous

Lets take a example and break this down.

Assume that some one from Application team comes and tells you that my Application is critical and my requirement is i need 2 Servers for better performance and SLA is that at-least 1 Server should be up and running

Solution: In this case the most likely solution is that you will build a 2 Node cluster and both terms High Availability and Fault Tolerance are same in this case

Lets take an another example:

Application team guy comes to you and tells that my Application is critical and my requirement is that at-least 2 Servers needs to be running all the time for better performance of the application and it should be highly available as well.

Solution:  The likely solution in this case is building a 4 Node cluster with 2 Nodes as Active and 2 Nodes as Passive or 2 Node Active/ Active Cluster.

If you seen the requirement the SLA played a role in determining how you provide the solution and that differentiates the terms HA and FT.

If one of the VMware Admin reading this post probably will have a different perspective in terms of the terms HA and FT as this involves Virtual Machines

HA in terms of VMware would be If one ESX host goes down the virtual machine should be up and running in another ESX host
FT would be if Virtual machine does down another Virtual Machine should continue to Serve the Application running on the Virtual Machines.

The reason i wanted to post this now is because we are moving away from On premises to cloud and Application SLA's and cost will play a major role in building Servers and our understanding on both the terms should be very clear.

Hopefully this make sense and helps some one!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

If anyone else as any other thoughts free to reply on the post , Until next one you all have a good day!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!