session-25.txt

variables
data types
loops
	count based
	for each
	dynamic
functions
conditions

outputs
data sources
locals
state and remote state
interpolation

how to create multiple environments with terraform
----------------------------------

using tfvars
-------------
code is same --> resource definitions

DEV and PROD
------------
DEV, QA, PROD, UAT, etc.

default variable values to override --> tfvars

s3 backend
-------------
diff buckets for diff environments

variables
-----------
default values

db-dev, backend-dev, frontend-dev
db-prod backend-prod frontend-prod

db-dev.daws78s.online
backend-dev.daws78s.online
frontend-dev.daws78s.online

db-prod.daws78s.online
backend-prod.daws78s.online
frontend-prod.daws78s.online

daws78s.online

Project=Expense, Module=DB/frontend-dev/backend-dev Environemt=dev/prod Terraform=true

frontend-dev/frontend-prod
----------------------------

if key startswith frontend

terraform init -backend-config=prod/backend.tf

terraform plan -var-file=prod/prod.tfvars

workspace
-----------
dev, qa, prod

if dev t3.micro
if prod t3.small

terraform.workspace = dev, prod

variables and their values we should be very careful

seperate repo for dev, seperate repo for production


workspace, tfvars
-------------------
adv --> less code
dis --> should be more careful while dealing variables and tfvars. chance of doing something wrong in prod

seperate repos
------------------
adv --> clear seperation of environments
dis --> duplication of code

provisioners
-------------------
terraform we are creating instances....

1. local-exec --> where you are running terraform command i.e local
2. remote-exec --> inside remote machine

ip address into a file

ansible-playbook -i private_ips.txt web.yaml

Linux Server
-----------
terraform and ansible install
clone this code
and run there

create db, install ansible, pull db playbook confpull db playbook configure itself