Terraform for loop, for_each loop and count - Part 6

[@newallst]

There are a lot of complicated explanations out there on how to do loops / for_each loops using Terraform. You nailed it beautifully. Thank you.

[@RahulWagh]

Glad you enjoyed it!

[@distantignition]

I want to point out that you should use count as little as possible, especially on resource creation. If you have resource A,B,C,D, that will give you resources 0,1,2,3. If B is then no longer needed, C slides into the "1" slot and D into the "2" slot. This is a huge pain. It will try to force resource recreation, which is fixable, but working around this isn't worth it. Just use for_each and reference the resource index by name. The resources need to be a set or map, but you can convert a list of strings with toset().

[@ideasystemsmexico]

I like your tutorials, well explained, good speaking and pronunciation, not long videos, thank you!

[@vettomd]

Love the way you explain by adding context and bit of concept.

[@RahulWagh]

Glad to hear that you like the terraform sessions

[@ramamt6350]

Thank you For Sharing Valuable Concepts.

[@ThinkDatahub]

Thank you for a very wonderful presentation. However, my question is, since both the for_each and count produce the same results on AWS, am interested in knowing the difference and why should I prefer one over the other? Thank you very much!

[@Masaf_YT]

Hi Rahul you are a fantastic guy that reflects on your face. my blessing all the time with you and keep making nice videos as always. welldone.

[@RahulWagh]

Cheers! Hope the sessions are useful for you

[@yogeshjagadale7385]

Excellent explanation 👍👍👌👌

[@RahulWagh]

Glad you liked it

[@HavingFunWithAvyan]

Hi Rahul, thanks but how can test the out value of the functions some times locally

[@suneeshmsuresh1092]

Simply Explained...👍👍👌👌

[@RahulWagh]

Glad you liked it

[@praveenchintu1312]

Perfectly explained!

[@RahulWagh]

Glad you think so!

[@twizzoe]

Thank you very much Rahul, I have learnt a lot from your Terraform videos. I can't wait to get to your other videos. Gracias

[@RahulWagh]

Glad to hear that

[@happylearningtricks]

learning from your videos Rahul - thanks for your videos

[@RahulWagh]

Glad to hear that

[@etpienaar]

can you use it to iterate through deploying to different regions - like aws config rule applied to multiple regions using the for loops, as there is no region id other than provider Thanks :)

[@sivarasana3641]

Great session sir

[@RahulWagh]

Keep watching

[@YouTubers-rj9xv]

Excellent teaching...love from andhra

[@RahulWagh]

Stay tuned for more upcoming similar session

[@RohitSyd]

Great explanation

[@sathishdarshanala5492]

hi rahul you have given count = length(var.user_names) iam littile confusing over here, are you calling another file which you have mentioned already as var.user_names somewhere?

[@swetham5761]

How to create two instances in two different regions? Please explain sir

[@thandepapa79]

What's the need of creating Ec2 when you are creating iam_users ? Example- Count.

[@cirishafranky]

Great post thank you. Also I found out that 'count' is a parameter of terraform, it cannot be anything else. Having this parameter in the block executes the block 'x' number of times specified in count.

[@TrollStdin]

This is a pretty good explanation, is so good I even included the link on one of my videos, please keep the good work.

[@RahulWagh]

Awesome, thank you!

[@sudheerk406]

You are Awesome man.

[@RahulWagh]

Thanks I hope you liked the terraform series

[@hasan135]

Thanks for sharing this nice video.

[@RahulWagh]

So nice of you

[@piyushbagani9244]

So Can for loop be used to create resources or it is used for output only?

[@joepinto5066]

hi, a question how to output values if we use in resource foreach example: resource "aws_subnet" "public" { for_each = var.pub_subnet vpc_id = aws_vpc.vpc.id cidr_block = each.value.cidr_block

[@RahulWagh]

You have to write the output block for that

[@praashanthkumaarpolla6252]

Hi .. i have annissue with the subnet and the error is subnet IDs should be list... I don't know what that exactly but finally I got this place to ask .. pleas please help

[@RahulWagh]

It is really hard to suggest without knowing full context

[@SPEDI1987]

Hi Rahul Please could you make video on configure vs code, terraform and aws cli on windows matchine and run all 3 commands

[@remoteXJunkie]

Hi, Thanks for the awesome explanations. Can you please tell, how we can use foreach loop to create multiple widgets in a dashboard?

[@SurajRaghunathansrjd8]

can you tell me from which site did you use to create your website sir

[@RahulWagh]

The website is developed using Hugo site generator. It is a static site not a wordpress site.

[@joe_wheat]

thank you for your knowledge sharing! You make a great work!

[@RahulWagh]

Thanks for the feedback

[@n.sudhirkumarn.sudhirkumar3127]

sir u explain good.. bt try to differentiate whats the purpose of for count why to use For If we can use COUNT try to tell also in ur next vedios in which situation we use for n in which situation we use COUNT

[@arjunt6791]

In for loop why we are using output variable values instead of input variables as you implemented in count, and for each loop...

[@RahulWagh]

Well it is just for tutorial purpose you can have your own implementation as you want

[@nguyenminh15988]

Thanks for your videos! It's really nice.

[@RahulWagh]

Glad you like them!

[@mdnishadhussain7131]

Awesome explanation! Could you please clear one doubt as all three create the same thing so when to use each? If you can tell me the actual Use Case for each then it would be a great favor. May God Bless you. Thanks once again!

[@RahulWagh]

Well the simplest use case of for_each would be the terraform dynamic block - if you havn't chcked how to create the dynamic block then please check and it will make more sense - kzbin.info/www/bejne/qV60ZqKKi7t2ldE

[@mdnishadhussain7131]

@@RahulWagh Okay..I will go through it for sure.. Thanks.

[@basavaraddychittargi3038]

Could please add video on nested for each Ex:let's say..we have list projects for each project I have to provide owner/editor role to list of user

[@RahulWagh]

I will try to add it into my todo list but can not promise any time soon

[@gk4976]

Rahul bro Can you please segregate all Kubernetes videos, actually I'm beginners in Kubernetes and your way of explaining is amazing, could you please make Kubernetes playlist videos step by steps

[@RahulWagh]

I am glad you liked the session. Here are playlist - 1. Kubernetes - kzbin.info/www/bejne/mKPMppJ7q51sqdk 2. Helm Chart - kzbin.info/www/bejne/pnmqlGttr61_otE 3. Terraform - kzbin.info/www/bejne/oHu7Z4Zrf6Z6pqs //Rahul

[@arjunt6791]

Here in for each loop, how each.value works , please explain briefly

[@RahulWagh]

each.value is just like an iteration or if you compare with other programming lang then it is a for loop

[@vinaykorrapati2967]

Amazing Videos and nice explanation. Done with the terraform videos..Requesting you to upload the CI CD pipeline stuff as well..

[@RahulWagh]

There is more to come in terrafrom as well as CI CD. But meanwhile here is one CI CD video which i could recommend to start with - kzbin.info/www/bejne/ioGwhquph65khaM

[@2mahender]

can i use for loop creating multiple ec2 instances?

[@RahulWagh]

Yes you can use for loop for ec2 instance creation

[@2mahender]

@@RahulWagh can u make once video on for loop with ec2 instances, as you have used for outputs only

[@madhurip6263]

Hi,Thanks for the awesome explanations.could you please do some videos on terraform version up gradation.

[@RahulWagh]

Yes, soon

[@SrinivasReddy-ey2oy]

why dont you explain what is the difference between booth count with list and for_each with set or map. booth operations give same output as you shown in the console. please explain difference.

[@SPEDI1987]

I did this set up but terraform plan command is not working

[@RahulWagh]

Please check your terraform installation

[@shubhamsahu1199]

bhai please explain the differnence between also?

[@pratspatel5698]

Eagerly waiting for upcoming video I planning for Terraform associate certification please advise.

[@RahulWagh]

Thanks prats for the feedback. Well I am preparing a complete series and you will be seeing many more videos on terraform in upcoming weeks. I have planned the complete terraform series but it would little time to prepare all

[@nerellaprasad1862]

i under stand your session and following you ..

[@RahulWagh]

Glad you like the sesion

[@yogeshjagadale7385]

Please make more videos on Terraform

[@RahulWagh]

Its on my calendar. You will see more terrafrom videos in upcoming weeks and months

[@aniruddhamalkar4981]

You should have explain the use of for loop for aws users. When you are doing output you can just printing the list through iteration not the actual iteration. Disappointed.