How to create EFS in multi availability zones using terraform?

Question

I have 2 EC2 instances in two AZ and now I need to mount the EFS in both instances. So how can I do this using terraform?

Here is my code,

resource "aws_efs_file_system" "magento-efs" {

   creation_token = "efs-demo"

   performance_mode = "generalPurpose"

   throughput_mode = "bursting"

   encrypted = "true"

 tags = {

     Name = "Magento-EFS"

   }

 }

resource "aws_efs_mount_target" "efs-mount" {

   file_system_id  = "${aws_efs_file_system.magento-efs.id}"

   subnet_id = "${aws_subnet.public_subnet.0.id}"

   security_groups = ["${aws_security_group.efs-sg.id}"]

}

Any solution for this?

Answer 1

 Here you just need to add one more mount target in a subnet in AZ, like:

resource "aws_efs_mount_target" "efs-mount-b" {

   file_system_id  = "${aws_efs_file_system.magento-efs.id}"

   subnet_id = "${aws_subnet.public_subnet.1.id}"

   security_groups = ["${aws_security_group.efs-sg.id}"]

}

 Or you can try this:

resource "aws_efs_mount_target" "efs-mount" {

   count = "length(aws_subnet.public_subnet.*.id)"

   file_system_id  = "${aws_efs_file_system.magento-efs.id}"

   subnet_id = "${element(aws_subnet.public_subnet.*.id, count.index)}"

   security_groups = ["${aws_security_group.efs-sg.id}"]

}

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