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Fixed names and added volume example (terraform-provider-openstack#892)
* Fixed invalid output name * Fixed reserved variable name and added output * Added template to attach,format, and mount volume * Removed wget command from provisioner * Changed units to instance_count
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‎examples/attach-format-mount-volume/README.md‎

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# Attach, format, and mount a Block Storage Volume to an Instance
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This provides a template for attaching, formating, and mounting a Block Storage Volume to an Instance.
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## Usage
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Download and install [Terraform](https://www.terraform.io/downloads.html):
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```sh
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wget -P /tmp/ https://releases.hashicorp.com/terraform/0.12.9/terraform_0.12.9_linux_amd64.zip
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unzip /tmp/terraform_0.12.9_linux_amd64.zip
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sudo mv terraform /usr/local/bin/
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terraform --version
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```
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Log in to the OpenStack dashboard, choose the project for which you want to download the OpenStack RC file, and run the following commands:
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```sh
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source ~/Downloads/PROJECT-openrc.sh
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Please enter your OpenStack Password for project PROJECT as user username:
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```
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### Initialize providers
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```sh
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terraform init
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```
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### Generate an execution plan
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```sh
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terraform plan
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# or with specific variables
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terraform plan -var 'pool=gateway' \
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-var 'flavor=m02.c02.d20' \
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-var 'volume_size=3' \
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-var 'network_name=my-network' \
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-var 'ssh_key_file=./id_rsa_os'
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```
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### Apply the plan
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```sh
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terraform apply -auto-approve
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# or with specific variables
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terraform apply -auto-approve \
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-var 'pool=gateway' \
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-var 'flavor=m02.c02.d20' \
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-var 'volume_size=3' \
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-var 'network_name=my-network' \
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-var 'ssh_key_file=./id_rsa_os'
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```
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Upon completion,the instances floating IP can be viewed in `instance_ip.txt`.
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### Destroy
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> watch the `-force` will not ask for any confirmation.
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```sh
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terraform destroy -force
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# or with specific variables
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terraform destroy -force \
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-var 'pool=gateway' \
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-var 'flavor=m02.c02.d20' \
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-var 'volume_size=3' \
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-var 'network_name=my-network' \
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-var 'ssh_key_file=./id_rsa_os'
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```

‎examples/attach-format-mount-volume/main.tf‎

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resource "openstack_compute_keypair_v2" "terraform" {
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name = "terraform"
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public_key = "${file("${var.ssh_key_file}.pub")}"
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}
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resource "openstack_compute_instance_v2" "my_instance" {
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name = "my_instance"
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image_name = "${var.image}"
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flavor_name = "${var.flavor}"
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key_pair = "${openstack_compute_keypair_v2.terraform.name}"
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security_groups = ["default"]
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network {
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name = "${var.network_name}"
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}
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}
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resource "openstack_networking_floatingip_v2" "fip" {
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pool = "${var.pool}"
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}
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resource "openstack_compute_floatingip_associate_v2" "fip" {
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instance_id = "${openstack_compute_instance_v2.my_instance.id}"
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floating_ip = "${openstack_networking_floatingip_v2.fip.address}"
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connection {
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host = "${openstack_networking_floatingip_v2.fip.address}"
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user = "${var.ssh_user_name}"
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private_key = "${file(var.ssh_key_file)}"
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}
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provisioner "local-exec" {
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command = "echo ${openstack_networking_floatingip_v2.fip.address} > instance_ip.txt"
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}
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provisioner "remote-exec" {
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inline = [
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"sudo mkfs.ext4 ${openstack_compute_volume_attach_v2.attached.device}",
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"sudo mkdir /mnt/volume",
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"sudo mount ${openstack_compute_volume_attach_v2.attached.device} /mnt/volume",
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"sudo df -h /mnt/volume",
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]
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}
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}

‎examples/attach-format-mount-volume/openrc.sample‎

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#!/usr/bin/env bash
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export OS_AUTH_URL=http://KEYSTONE.ENDPOINT.URL:5000/v3
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export OS_PROJECT_ID="42..."
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export OS_PROJECT_NAME="multivm-project"
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export OS_USER_DOMAIN_NAME="mycloud"
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export OS_PROJECT_DOMAIN_ID="23..."
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export OS_USERNAME="$USER"
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export OS_PASSWORD=$OS_PASSWORD_INPUT
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export OS_REGION_NAME="MyRegion"
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export OS_INTERFACE=public
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export OS_IDENTITY_API_VERSION=3

‎examples/attach-format-mount-volume/outputs.tf‎

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output "floating_ip" {
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value = "${openstack_networking_floatingip_v2.fip.address}"
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}
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output "volume_devices" {
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value = "${openstack_compute_volume_attach_v2.attached.device}"
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}

‎examples/attach-format-mount-volume/variables.tf‎

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variable "image" {
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default = "Ubuntu 18.04"
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}
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variable "flavor" {
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default = "m1.small"
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}
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variable "ssh_key_file" {
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default = "~/.ssh/id_rsa"
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}
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variable "volume_size" {
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default = 1
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}
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variable "ssh_user_name" {
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default = "ubuntu"
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}
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variable "pool" {
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default = "public"
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}
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variable "network_name" {
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default = "my_network"
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}
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‎examples/attach-format-mount-volume/volumes.tf‎

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resource "openstack_blockstorage_volume_v2" "volume_1" {
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name = "volume_1"
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size = "${var.volume_size}"
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}
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resource "openstack_compute_volume_attach_v2" "attached" {
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instance_id = "${openstack_compute_instance_v2.my_instance.id}"
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volume_id = "${openstack_blockstorage_volume_v2.volume_1.id}"
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# Prevent re-creation
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# lifecycle {
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# ignore_changes = ["volume_id", "instance_id"]
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# }
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}

‎examples/multiple-vm-with-floating-ip/Readme.md‎

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# or with specific variables
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terraform plan -var 'pool=gateway' \
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-var 'flavor=m02.c02.d20' \
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-var 'count=3' \
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-var 'instance_count=3' \
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-var 'network_name=my-network' \
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-var 'ssh_key_file=./id_rsa_os'
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```
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terraform apply -auto-approve \
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-var 'pool=gateway' \
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-var 'flavor=m02.c02.d20' \
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-var 'count=3' \
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-var 'instance_count=3' \
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-var 'network_name=my-network' \
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-var 'ssh_key_file=./id_rsa_os'
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```
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terraform destroy -force \
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-var 'pool=gateway' \
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-var 'flavor=m02.c02.d20' \
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-var 'count=3' \
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-var 'instance_count=3' \
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-var 'network_name=my-network' \
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-var 'ssh_key_file=./id_rsa_os'
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```

‎examples/multiple-vm-with-floating-ip/main.tf‎

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}
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resource "openstack_compute_instance_v2" "multi" {
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count = "${var.count}"
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name = "${format("${var.instance_prefix}-%02d", count.index+1)}"
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image_name = "${var.image}"
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flavor_name = "${var.flavor}"
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key_pair = "${openstack_compute_keypair_v2.terraform.name}"
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count = "${var.instance_count}"
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name = "${format("${var.instance_prefix}-%02d", count.index + 1)}"
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image_name = "${var.image}"
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flavor_name = "${var.flavor}"
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key_pair = "${openstack_compute_keypair_v2.terraform.name}"
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security_groups = ["default"]
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network {
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name = "${var.network_name}"
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}
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}
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resource "openstack_networking_floatingip_v2" "fip" {
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count = "${var.count}"
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pool = "${var.pool}"
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count = "${var.instance_count}"
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pool = "${var.pool}"
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}
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resource "openstack_compute_floatingip_associate_v2" "fip" {
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count = "${var.count}"
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count = "${var.instance_count}"
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instance_id = "${openstack_compute_instance_v2.multi.*.id[count.index]}"
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floating_ip = "${openstack_networking_floatingip_v2.fip.*.address[count.index]}"
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}

‎examples/multiple-vm-with-floating-ip/outputs.tf‎

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output "floating_ip_addresses" {
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value = "${openstack_networking_floatingip_v2.fip.*.address}"
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}

‎examples/multiple-vm-with-floating-ip/variables.tf‎

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default = "public"
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}
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variable "count" {
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variable "instance_count " {
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default = 2
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}
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