compute.tf

## Copyright © 2021, Oracle and/or its affiliates. 
## All rights reserved. The Universal Permissive License (UPL), Version 1.0 as shown at http://oss.oracle.com/licenses/upl

data "template_file" "key_script" {
  template = file("./scripts/sshkey.tpl")
  vars = {
    ssh_public_key = tls_private_key.public_private_key_pair.public_key_openssh
  }
}

data "template_cloudinit_config" "cloud_init" {
  gzip          = true
  base64_encode = true

  part {
    filename     = "ainit.sh"
    content_type = "text/x-shellscript"
    content      = data.template_file.key_script.rendered
  }
}

# Dictionary Locals
locals {
  compute_flexible_shapes = [
    "VM.Standard.E3.Flex",
    "VM.Standard.E4.Flex",
    "VM.Standard.A1.Flex",
    "VM.Optimized3.Flex"
  ]
}

# Checks if is using Flexible Compute Shapes
locals {
  is_flexible_node_shape = contains(local.compute_flexible_shapes, var.InstanceShape)
}

resource "oci_core_instance" "tomcat-server" {
  count               = var.numberOfNodes
  availability_domain = var.availablity_domain_name == "" ? data.oci_identity_availability_domains.ADs.availability_domains[var.availablity_domain_number]["name"] : var.availablity_domain_name
  compartment_id      = var.compartment_ocid
  display_name        = "tomcat-server-${count.index}"
  fault_domain        = "FAULT-DOMAIN-${(count.index % 3) + 1}"
  shape               = var.InstanceShape

  dynamic "agent_config" {
    for_each = var.use_bastion_service ? [1] : []
    content {
      are_all_plugins_disabled = false
      is_management_disabled   = false
      is_monitoring_disabled   = false
      plugins_config {
        desired_state = "ENABLED"
        name          = "Bastion"
      }
    }
  }

  create_vnic_details {
    subnet_id        = oci_core_subnet.vcn01_subnet_app01.id
    display_name     = "primaryvnic"
    assign_public_ip = false
    nsg_ids          = [oci_core_network_security_group.SSHSecurityGroup.id, oci_core_network_security_group.APPSecurityGroup.id]
  }

  source_details {
    source_type             = "image"
    source_id               = lookup(data.oci_core_images.InstanceImageOCID.images[0], "id")
    boot_volume_size_in_gbs = "50"
  }

  provisioner "local-exec" {
    command = "sleep 240"
  }

  metadata = {
    ssh_authorized_keys = var.ssh_public_key
    user_data           = data.template_cloudinit_config.cloud_init.rendered
  }

  dynamic "shape_config" {
    for_each = local.is_flexible_node_shape ? [1] : []
    content {
      memory_in_gbs = var.InstanceFlexShapeMemory
      ocpus         = var.InstanceFlexShapeOCPUS
    }
  }

  defined_tags = { "${oci_identity_tag_namespace.ArchitectureCenterTagNamespace.name}.${oci_identity_tag.ArchitectureCenterTag.name}" = var.release }
}