How to create email subscription to AWS sns_topic_subscription in terraform?

[egul...@gmail.com]

Hello everyone,

Since 'email' option is NOT SUPPORTED in terraform. How does anyone handle creation of subscriptions in terraform?

In cloudformation it's just 4 lines of code and I'm surprised that this simple feature is missing here.

Any advice appreciated.


Thank you

[Dean Wilson]

On 3 October 2016 at 19:02, <egul...@gmail.com> wrote:

> Since 'email' option is NOT SUPPORTED in terraform. How does anyone handle
> creation of subscriptions in terraform?

I wrap a CloudFormation template and call that from Terraform. It
doesn't handle the "Accept Subscription" email but it does create the
subscription. The code was written for 0.6 but there's a PR that
should add support for 0.7 and data sources that I need to test.

Hope this helps,
Dean
--
Dean Wilson http://www.unixdaemon.net

[egul...@gmail.com]

Hi Dean,

I tried code from your github - tf_sns_email placeholder but 'tf plan' fails with this error:

* Resource 'aws_cloudformation_stack.sns-topic' does not have attribute 'outputs.ARN' for variable 'aws_cloudformation_stack.sns-topic.outputs.ARN'

Any suggestions?

Thank you

[Ian Duffy]

This is how we do this:

resource "aws_sns_topic" "instance-alerts" {

  name = "instance-alerts"

  provisioner "local-exec" {

    command = "aws sns subscribe --topic-arn ${self.arn} --protocol email --notification-endpoint notifi...@blah.com"

  }

}

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[egul...@gmail.com]

This is awesome!

One thing I would add is that if you have ASG & SNS Topic created already then this code will not add email subscription.
The way I fixed it is by changing the name of SNS topic then terraform replaced launch_configuration with new one and added new SNS topic with email subscription.



Thank you

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[VARUN GABA]

--topic-arn invalid parameter was what i got when tried this.. any idea ?

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[egul...@gmail.com]

How does your code look like?

[Sharmila Kale]

Thanks! It worked for me as well. Just one thing. It's not working with a comma-separated email list. And if I give an outlook email group, it does not send any subscription email to that group. Any idea?

Thanks

On Wednesday, October 5, 2016 at 10:56:06 AM UTC-5, Ian Duffy wrote:

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[Nikhil Pawar]

HI Ian ,

how do we add multiple email scubscription ?

& also not understood self.arn ( i am new to terraform ) 

Can you please explain a bit if possible 

Nikhil

 

[t...@s16.partners]

I imagine you've got this sorted by now, but for anyone else that comes across this post, this seems to work (bear in mind I'm quite new to TF).

resource "aws_sns_topic" "billing_notifications" {

name = "billing-notifications"

provisioner "local-exec" {

command = "aws sns subscribe --topic-arn ${self.arn} --protocol email --notification-endpoint ${var.emails["someone"]}"

}

provisioner "local-exec" {

command = "aws sns subscribe --topic-arn ${self.arn} --protocol email --notification-endpoint ${var.emails["esomeone_else"]}"

}

}

There may be a nicer way of handling this, but it doesn't look like TF templates have a loop or iterate function.

[t...@s16.partners]

I had an invalid TopicArn error too, but had forgot to change my AWS CLI credentials to the same ones I was using in TF. The provisioner that calls the AWS CLI command does not use the credentials in TF - it uses the ones configured against your CLI.

[Rob Coward]

How about using a null_resource with a count iterator ?

resource "aws_sns_topic" "billing_notifications" {
  name = "billing-notifications”

}

resource “null_resource” “sns_subscribe” {

depends_on = [ “aws_sns_topic.billing_notifications” ]

triggers = {

sns_topic_arn = “${aws_sns_topic.billing_notifications.arn}”

}

count = “${length(var.emails)}”

provisioner "local-exec" {
command = "aws sns subscribe --topic-arn ${aws_sns_topic.billing_notifications.arn} --protocol email --notification-endpoint ${element(var.emails, count.index)}"

}

}

Regards,

Rob Coward

rob.c...@devops-consultants.co.uk 

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