Using data external to receive variable from bash script in terraform

Question

I want to fetch sshkey with digital ocean token with get_sshkey.sh script:

do_token=$1


curl -X GET -s -H "Authorization: Bearer ${do_token//\"}" "https://api.digitalocean.com/v2/account/keys?page=1" | jq -r --arg queryname "User's key" '.ssh_keys[] | select(.name == $queryname).public_key'

I have a declared variable of DO token var.do-token, I am trying to use $1 bash concept to pass parameter to get_sshkey.sh and run it in terraform data "external" in following:

data "external" "fetchssh" {
  program = ["sh", "/input/get_sshkey.sh `echo "var.do-token" | terraform -chdir=/input console -var-file terraform.auto.tfvars`"]

}

but get the error: Expected a comma to mark the beginning of the next item.

Any updates on this? Have the same issue.

Relyativist
– Relyativist

2021-06-12 08:40:48 +00:00
Commented Jun 12, 2021 at 8:40 — Relyativist
– Relyativist, Commented Jun 12, 2021 at 8:40

Martin Atkins · Accepted Answer · 2021-06-12 01:12:02Z

1

In order to include literal quotes in your shell command, you'll need to escape them so that Terraform can see that you don't intend to end the quoted string template:

data "external" "fetchssh" {
  program = ["sh", "/input/get_sshkey.sh `echo \"var.do-token\" | terraform -chdir=/input console -var-file terraform.auto.tfvars`"]
}

Using the external data source in Terraform to recursively run another terraform is a pretty irregular thing to do, but as long as there's such a variable defined in that configuration I suppose it could work.

answered Jun 12, 2021 at 1:12

Martin Atkins

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1 Comment

PatrickHellman Over a year ago

This returns Error: failed to execute "sh": sh: can't open '/input/get_sshkey.sh echo "var.do-token" | terraform -chdir=/input console -var-file terraform.auto.tfvars': No such file or directory, however if I run '/input/get_sshkey.sh "echo "var.do-token" | terraform -chdir=/input console -var-file terraform.auto.tfvars" separately it returns appropriate token hash: sh: "tokenhash": not found

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