amazon web services - Terraform throws "groupName cannot be used with the parameter subnet" or "VPC security groups may not be used for a non-VPC launch" -

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when trying figure out how configure aws_instance aws vpc following errors occur:

* error launching source instance: invalidparametercombination: parameter groupname cannot used parameter subnet     status code: 400, request id: []

or

* error launching source instance: invalidparametercombination: vpc security groups may not used non-vpc launch     status code: 400, request id: []

this due how security group associated instance.

without subnet ok associate using security group's name:

resource "aws_instance" "server" {   ...   security_groups = [ "${aws_security_group.group_name.name}" ] }

in case subnet associated cannot use name, should instead use security group's id:

security_groups = [ "${aws_security_group.group_name.id}" ] subnet_id = "${aws_subnet.subnet_name.id}"

the above assumes you've created security group named group_name, , subnet named subnet_name


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