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Adding support for Metrics-based Dynamic Auto-scaling
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‎CHANGELOG.md‎

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- Add singular Availability Domain data source with related example updates
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- Support for Monitoring service
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- Adding ability to disable monitoring in instances
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- Adding support for Metrics-based Dynamic Auto-scaling
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## 3.16.0 (February 26, 2019)
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‎docs/examples/autoscaling/compute.tf‎

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resource "oci_core_instance" "TFInstance" {
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availability_domain = "${lookup(data.oci_identity_availability_domains.ADs.availability_domains[var.availability_domain - 1],"name")}"
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compartment_id = "${var.compartment_ocid}"
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display_name = "TFInstanceForInstancePool"
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shape = "${var.instance_shape}"
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create_vnic_details {
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subnet_id = "${oci_core_subnet.ExampleSubnet.id}"
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display_name = "primaryvnic"
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assign_public_ip = true
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hostname_label = "tfexampleinstance${count.index}"
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}
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source_details {
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source_type = "image"
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source_id = "${var.instance_image_ocid[var.region]}"
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}
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timeouts {
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create = "60m"
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}
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}
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resource "oci_core_instance_configuration" "TFInstanceConfiguration" {
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compartment_id = "${var.compartment_ocid}"
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display_name = "TFExampleInstanceConfiguration"
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instance_details {
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instance_type = "compute"
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launch_details {
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compartment_id = "${var.compartment_ocid}"
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ipxe_script = "ipxeScript"
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shape = "${var.instance_shape}"
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display_name = "TFExampleInstanceConfigurationLaunchDetails"
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create_vnic_details {
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assign_public_ip = true
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display_name = "TFExampleInstanceConfigurationVNIC"
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skip_source_dest_check = false
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}
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extended_metadata = {
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some_string = "stringA"
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nested_object = "{\"some_string\": \"stringB\", \"object\": {\"some_string\": \"stringC\"}}"
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}
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source_details = {
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source_type = "image"
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image_id = "${var.instance_image_ocid[var.region]}"
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}
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}
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}
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}
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resource "oci_core_instance_pool" "TFInstancePool" {
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compartment_id = "${var.compartment_ocid}"
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instance_configuration_id = "${oci_core_instance_configuration.TFInstanceConfiguration.id}"
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size = 2
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state = "RUNNING"
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display_name = "TFInstancePool"
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placement_configurations {
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availability_domain = "${lookup(data.oci_identity_availability_domains.ADs.availability_domains[var.availability_domain - 1],"name")}"
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primary_subnet_id = "${oci_core_subnet.ExampleSubnet.id}"
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}
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}
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resource "oci_auto_scaling_auto_scaling_configuration" "TFAutoScalingConfiguration" {
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compartment_id = "${var.compartment_ocid}"
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cool_down_in_seconds = "300"
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display_name = "TFAutoScalingConfiguration"
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is_enabled = "true"
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policies {
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capacity {
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initial = "4"
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max = "4"
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min = "2"
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}
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display_name = "TFPolicy"
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policy_type = "threshold"
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rules {
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action {
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type = "CHANGE_COUNT_BY"
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value = "1"
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}
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display_name = "TFScaleOutRule"
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metric {
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metric_type = "CPU_UTILIZATION"
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threshold {
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operator = "GT"
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value = "1"
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}
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}
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}
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rules {
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action {
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type = "CHANGE_COUNT_BY"
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value = "-1"
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}
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display_name = "TFScaleInRule"
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metric {
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metric_type = "CPU_UTILIZATION"
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threshold {
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operator = "LT"
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value = "1"
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}
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}
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}
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}
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auto_scaling_resources {
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id = "${oci_core_instance_pool.TFInstancePool.id}"
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type = "instancePool"
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}
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}

‎docs/examples/autoscaling/datasources.tf‎

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# Gets a list of Availability Domains
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data "oci_identity_availability_domains" "ADs" {
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compartment_id = "${var.tenancy_ocid}"
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}
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data "oci_core_instance_configuration" TFInstanceConfigurationDatasource {
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instance_configuration_id = "${oci_core_instance_configuration.TFInstanceConfiguration.id}"
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}
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data "oci_core_instance_configurations" TFInstanceConfigurationDatasources {
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compartment_id = "${var.compartment_ocid}"
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filter {
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name = "id"
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values = ["${oci_core_instance_configuration.TFInstanceConfiguration.id}"]
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}
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}
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data "oci_core_instance_pool" "TFInstancePoolDatasource" {
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instance_pool_id = "${oci_core_instance_pool.TFInstancePool.id}"
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}
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data "oci_core_instance_pools" "TFInstancePoolDatasources" {
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compartment_id = "${var.compartment_ocid}"
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display_name = "TFInstancePool"
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state = "RUNNING"
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filter {
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name = "id"
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values = ["${oci_core_instance_pool.TFInstancePool.id}"]
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}
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}
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data "oci_core_instance_pool_instances" "TFInstancePoolInstanceDatasources" {
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compartment_id = "${var.compartment_ocid}"
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instance_pool_id = "${oci_core_instance_pool.TFInstancePool.id}"
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display_name = "TFInstancePool"
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}
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data "oci_auto_scaling_auto_scaling_configuration" "TFAutoScalingConfigurationDatasource" {
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auto_scaling_configuration_id = "${oci_auto_scaling_auto_scaling_configuration.TFAutoScalingConfiguration.id}"
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}
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data "oci_auto_scaling_auto_scaling_configurations" "TFAutoScalingConfigurationDatasources" {
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compartment_id = "${var.compartment_ocid}"
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display_name = "TFAutoScalingConfiguration"
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filter {
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name = "id"
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values = ["${oci_auto_scaling_auto_scaling_configuration.TFAutoScalingConfiguration.id}"]
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}
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}

‎docs/examples/autoscaling/env-vars‎

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### Authentication details
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export TF_VAR_tenancy_ocid="<tenancy OCID>"
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export TF_VAR_user_ocid="<user OCID>"
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export TF_VAR_fingerprint="<PEM key fingerprint>"
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export TF_VAR_private_key_path="<path to the private key that matches the fingerprint above>"
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### Region
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export TF_VAR_region="<region in which to operate, example: us-ashburn-1, us-phoenix-1>"
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### Compartment
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export TF_VAR_compartment_ocid="<compartment OCID>"
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### Public/private keys used on the instance
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export TF_VAR_ssh_public_key=$(cat <path to public key>)
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export TF_VAR_ssh_private_key=$(cat <path to private key>)
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## NOTE: These are not your api keys. More info on the right keys see
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## https://docs.us-phoenix-1.oraclecloud.com/Content/Compute/Tasks/managingkeypairs.htm

‎docs/examples/autoscaling/network.tf‎

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resource "oci_core_virtual_network" "ExampleVCN" {
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cidr_block = "10.1.0.0/16"
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compartment_id = "${var.compartment_ocid}"
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display_name = "TFExampleVCN"
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dns_label = "tfexamplevcn"
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}
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resource "oci_core_subnet" "ExampleSubnet" {
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availability_domain = "${lookup(data.oci_identity_availability_domains.ADs.availability_domains[var.availability_domain - 1],"name")}"
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cidr_block = "10.1.20.0/24"
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display_name = "TFExampleSubnet"
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dns_label = "tfexamplesubnet"
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security_list_ids = ["${oci_core_virtual_network.ExampleVCN.default_security_list_id}"]
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compartment_id = "${var.compartment_ocid}"
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vcn_id = "${oci_core_virtual_network.ExampleVCN.id}"
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route_table_id = "${oci_core_route_table.ExampleRT.id}"
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dhcp_options_id = "${oci_core_virtual_network.ExampleVCN.default_dhcp_options_id}"
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}
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resource "oci_core_internet_gateway" "ExampleIG" {
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compartment_id = "${var.compartment_ocid}"
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display_name = "TFExampleIG"
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vcn_id = "${oci_core_virtual_network.ExampleVCN.id}"
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}
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resource "oci_core_route_table" "ExampleRT" {
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compartment_id = "${var.compartment_ocid}"
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vcn_id = "${oci_core_virtual_network.ExampleVCN.id}"
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display_name = "TFExampleRouteTable"
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route_rules {
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destination = "0.0.0.0/0"
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destination_type = "CIDR_BLOCK"
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network_entity_id = "${oci_core_internet_gateway.ExampleIG.id}"
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}
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}

‎docs/examples/autoscaling/provider.tf‎

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provider "oci" {
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tenancy_ocid = "${var.tenancy_ocid}"
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user_ocid = "${var.user_ocid}"
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fingerprint = "${var.fingerprint}"
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private_key_path = "${var.private_key_path}"
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region = "${var.region}"
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}

‎docs/examples/autoscaling/variables.tf‎

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variable "tenancy_ocid" {}
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variable "user_ocid" {}
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variable "fingerprint" {}
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variable "private_key_path" {}
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variable "region" {}
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variable "compartment_ocid" {}
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variable "ssh_public_key" {}
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variable "ssh_private_key" {}
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variable "instance_shape" {
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default = "VM.Standard2.1"
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}
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variable "instance_image_ocid" {
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type = "map"
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default = {
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// See https://docs.us-phoenix-1.oraclecloud.com/images/
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// Oracle-provided image "Oracle-Linux-7.5-2018.10.16-0"
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us-phoenix-1 = "ocid1.image.oc1.phx.aaaaaaaaoqj42sokaoh42l76wsyhn3k2beuntrh5maj3gmgmzeyr55zzrwwa"
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us-ashburn-1 = "ocid1.image.oc1.iad.aaaaaaaageeenzyuxgia726xur4ztaoxbxyjlxogdhreu3ngfj2gji3bayda"
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eu-frankfurt-1 = "ocid1.image.oc1.eu-frankfurt-1.aaaaaaaaitzn6tdyjer7jl34h2ujz74jwy5nkbukbh55ekp6oyzwrtfa4zma"
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uk-london-1 = "ocid1.image.oc1.uk-london-1.aaaaaaaa32voyikkkzfxyo4xbdmadc2dmvorfxxgdhpnk6dw64fa3l4jh7wa"
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}
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}
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# Choose an Availability Domain
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variable "availability_domain" {
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default = "3"
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}

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