Terraform script execution, on the basis of input parameter values - terraform-provider-gcp

I have create a terraform script for google storage bucket.
I have added multiple optional parameters to script. for which I provide values from tfvars file.
is it possible that if I provide few specific required values from tfvars & script will execute on the basis of input values & ignore rest of the properties which are not provided in tfvars.

Related

How to assign certain Terraform Variables via TFVARS file, while others via Terraform Cloud Variable sets

I currently have a dev.auto.tfavrs file with a few dozen variables and their values for my application such as:
DB_NUM_RECORDS_PER_EXECUTION = "Something here"
QUEUE_API_KEY = "Something here"
application = "My Appplication"
Application_Secret_Key = "Some Secret Key here"
All variables are defined in a variables.tf file, with the sensitive ones assigned a blank value.
I run terraform plan in this manner:
terraform apply -var-file=env/dev.auto.tfvars
(I have also qa.auto.tfvars and prod.auto.tfvars for the other environments)
I want to inject certain sensitive values to certain keys such as :
Application_Secret_Key via The Terraform Cloud Variable sets so developers don't have to.
I have added Application_Secret_Key in the TF Cloud Variable set.
but when i run the above terraform plan, Terraform Cloud is not injecting the value stored in the variable set...instead it assigns the blank value as defined in my configuration.
It is my understanding that the auto.tfvars files take precedence and over write the terraform.tfavars file in Terraform Cloud. Hence the sensitive values are Blank
I do not want to add dozens of variables in the TF Cloud Variable set...only certain sensitive ones.
Is this possible?
Thanks in advance

Terraform data dynamically using variables

I was wondering if it's possible to grab different data dynamically based on variables like so
data.terraform_remote_state.vm.outputs.vm_***var.vmname***
Or something similar? i dont have the option to redesign the outputs currently, and this would greatly lower the chance of making failure upon creating new terraform deployments
thanks!
There are Input Variables available in Terraform. These variables allow you to define inputs expected at the time of terraform apply. The values may be entered via an interactive terminal or provided in a .tfvars file.
variable "vmname" {
type = string
description = "The name of the virtual machine."
}
Then you can use them by expansion:
"data.terraform_remote_state.vm.outputs.vm_${var.vmname}"
For additional reference, see https://www.terraform.io/docs/language/values/variables.html

Why are my build pipelines replacing specific values with asterisks? - Azure DevOps

My team is working to integrate an infrastructure-as-code scanning solution into our build pipelines and we've discovered that the string "GCP" is being replaced with three asterisks when tasks are being executed in our build pipelines. This isn't unique to one task either whereas I created a bash script to execute and list our our repository and all directories that start with "GCP" are replaced by the three asterisks. The only variable set using the "GCP" value is the "system.teamProject" variable and we are not using any secret values that I know of and there are no variable groups used.
Any help would be greatly appreciated. Thanks!
Bash Asterisk Output "ls -a"
IaC Scanning Asterisk Task Failure
If you have set any secret variables in your pipeline, or have linked any variable groups that contain secret variables (include the secrets from the connected external and remote services services), generally the values of these secrets will be masked as asterisks.
When you try to print the values of the secrets to the output logs, the values will display as asterisks in the logs. If you try to output the values into a text file, the values will still display as asterisks in the file.
In addition, if a string that is not set as secret but its substrings are the values of some existing secrets in the pipeline, these substring parts may be masked as asterisks when trying to output this string.
If you do not set any secrets, for us to investigate this issue further, would you like to share us with the actual value that was masked as asterisks in the the logs? We well investigate and evaluate whether this string contains some special or sensitive characters that may be automatically identified as secrets by Azure DevOps.

How to execute a script(say python or java etc) based on the value of the property in Apache NiFi

I have a flow file containing key value pairs, will read from Kafka and send to Nifi, using Getfile I will receive the file and then using Configure Process we can extract the contents of flowfile and keep them as flowfile attributes by adding matching regex.
Now after that I need to use specific attribute(s)(which I have got in the above step) and its value(s) and compare with the particular string value or will read the corresponding property value from nifi.properties file or custom properties file.
Now based on the validity I need to execute a script using ExecuteStream Command, suppose the extracted attribute value and nifi.properties or custom properties value matches then i should execute the script.
Here the query is how to compare the property values and execute the script.

Is there a way to input variable values from outside to terraform main file?

Is there a way I can input variable values from outside to terraform main file. It can be a excel sheet or sql db. Is it possible to do so ?
What you can't currently do is point you cmdline at a db i.e. to replace a tfvars file, but what you can set up in Terraform is to use a number of different key value stores:
consul
https://www.terraform.io/intro/examples/consul.html
aws parameter store (using a resource or data)
https://www.terraform.io/docs/providers/aws/d/ssm_parameter.html
There are quite a number of other key/value stores to choose from but there's no zero code solution and you will end up with lots of these statements:
Setup a key in Consul to provide inputs
data "consul_keys" "input" {
key {
name = "size"
path = "tf_test/size"
default = "m1.small"
}
}
There are many ways to do that;
You can use a tfvars file with all your inputs and you can use one file customer, user, environment
You can pass the variables to terraform executable on the command line
You can define environment files prefixed wit TF_VAR_[variable]
You can use https://www.terraform.io/docs/providers/aws/d/ssm_parameter.html as suggested above
You can even store variables in DynamoDB or any other database
You can use Consult+Vault as well

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