oke-variables.tf

## Copyright (c) 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


# OKE Variables
## OKE Cluster Details

variable "create_new_oke_cluster" {
  default     = true
  description = "Creates a new OKE cluster, node pool and network resources"
}
variable "existent_oke_cluster_id" {
  default     = ""
  description = "Using existent OKE Cluster. Only the application and services will be provisioned. If select cluster autoscaler feature, you need to get the node pool id and enter when required"
}
variable "create_new_compartment_for_oke" {
  default     = false
  description = "Creates new compartment for OKE Nodes and OCI Services deployed.  NOTE: The creation of the compartment increases the deployment time by at least 3 minutes, and can increase by 15 minutes when destroying"
}
variable "oke_compartment_description" {
  default = "Compartment for OKE, Nodes and Services"
}
variable "cluster_options_add_ons_is_kubernetes_dashboard_enabled" {
  default = false
}
variable "cluster_options_admission_controller_options_is_pod_security_policy_enabled" {
  description = "If true: The pod security policy admission controller will use pod security policies to restrict the pods accepted into the cluster."
  default     = false
}

## OKE Visibility (Workers and Endpoint)

variable "cluster_workers_visibility" {
  default     = "Private"
  description = "The Kubernetes worker nodes that are created will be hosted in public or private subnet(s)"

  validation {
    condition     = var.cluster_workers_visibility == "Private" || var.cluster_workers_visibility == "Public"
    error_message = "Sorry, but cluster visibility can only be Private or Public."
  }
}

variable "cluster_endpoint_visibility" {
  default     = "Public"
  description = "The Kubernetes cluster that is created will be hosted on a public subnet with a public IP address auto-assigned or on a private subnet. If Private, additional configuration will be necessary to run kubectl commands"

  validation {
    condition     = var.cluster_endpoint_visibility == "Private" || var.cluster_endpoint_visibility == "Public"
    error_message = "Sorry, but cluster endpoint visibility can only be Private or Public."
  }
}

## OKE Encryption details
variable "use_encryption_from_oci_vault" {
  default     = false
  description = "By default, Oracle manages the keys that encrypts Kubernetes Secrets at Rest in Etcd, but you can choose a key from a vault that you have access to, if you want greater control over the key's lifecycle and how it's used"
}
variable "create_new_encryption_key" {
  default     = false
  description = "Creates new vault and key on OCI Vault/Key Management/KMS and assign to boot volume of the worker nodes"
}
variable "existent_encryption_key_id" {
  default     = ""
  description = "Use an existent master encryption key to encrypt boot volume and object storage bucket. NOTE: If the key resides in a different compartment or in a different tenancy, make sure you have the proper policies to access, or the provision of the worker nodes will fail"
}
variable "create_vault_policies_for_group" {
  default     = false
  description = "Creates policies to allow the user applying the stack to manage vault and keys. If you are on the Administrators group or already have the policies for a compartment, this policy is not needed. If you do not have access to allow the policy, ask your administrator to include it for you"
}
variable "user_admin_group_for_vault_policy" {
  default     = "Administrators"
  description = "User Identity Group to allow manage vault and keys. The user running the Terraform scripts or Applying the ORM Stack need to be on this group"
}

# ## OKE Autoscaler
# variable "cluster_autoscaler_enabled" {
#   default     = true
#   description = "Enables OKE cluster autoscaler. Node pools will auto scale based on the resources usage"
# }
# variable "cluster_autoscaler_min_nodes" {
#   default     = 3
#   description = "Minimum number of nodes on the node pool to be scheduled by the Kubernetes"
# }
# variable "cluster_autoscaler_max_nodes" {
#   default     = 10
#   description = "Maximum number of nodes on the node pool to be scheduled by the Kubernetes"
# }
# variable "existent_oke_nodepool_id_for_autoscaler" {
#   default     = ""
#   description = "Nodepool Id of the existent OKE to use with Cluster Autoscaler"
# }

## OKE Node Pool Details
variable "node_pool_name" {
  default     = "pool1"
  description = "Name of the node pool"
}
variable "k8s_version" {
  default     = "Latest"
  description = "Kubernetes version installed on your master and worker nodes"
}
variable "num_pool_workers" {
  default     = 3
  description = "The number of worker nodes in the node pool. If select Cluster Autoscaler, will assume the minimum number of nodes configured"
}
variable "node_pool_shape" {
  default     = "VM.Standard.E3.Flex"
  description = "A shape is a template that determines the number of OCPUs, amount of memory, and other resources allocated to a newly created instance for the Worker Node"
}
variable "node_pool_node_shape_config_ocpus" {
  default     = "1" # Only used if flex shape is selected
  description = "You can customize the number of OCPUs to a flexible shape"
}
variable "node_pool_node_shape_config_memory_in_gbs" {
  default     = "16" # Only used if flex shape is selected
  description = "You can customize the amount of memory allocated to a flexible shape"
}
variable "node_pool_boot_volume_size_in_gbs" {
  default     = "60"
  description = "Specify a custom boot volume size (in GB)"
}
variable "image_operating_system" {
  default     = "Oracle Linux"
  description = "The OS/image installed on all nodes in the node pool."
}
variable "image_operating_system_version" {
  default     = "7.9"
  description = "The OS/image version installed on all nodes in the node pool."
}
variable "generate_public_ssh_key" {
  default = true
}
variable "public_ssh_key" {
  default     = ""
  description = "In order to access your private nodes with a public SSH key you will need to set up a bastion host (a.k.a. jump box). If using public nodes, bastion is not needed. Left blank to not import keys."
}

# Network Details
## CIDRs
variable "network_cidrs" {
  type = map(string)

  default = {
    VCN-CIDR                      = "10.20.0.0/16"
    SUBNET-REGIONAL-CIDR          = "10.20.10.0/24"
    LB-SUBNET-REGIONAL-CIDR       = "10.20.20.0/24"
    ENDPOINT-SUBNET-REGIONAL-CIDR = "10.20.0.0/28"
    ALL-CIDR                      = "0.0.0.0/0"
    PODS-CIDR                     = "10.244.0.0/16"
    KUBERNETES-SERVICE-CIDR       = "10.96.0.0/16"
  }
}


# Create Dynamic Group and Policies
variable "create_dynamic_group_for_nodes_in_compartment" {
  default     = true
  description = "Creates dynamic group of Nodes in the compartment. Note: You need to have proper rights on the Tenancy. If you only have rights in a compartment, uncheck and ask you administrator to create the Dynamic Group for you"
}
variable "existent_dynamic_group_for_nodes_in_compartment" {
  default     = ""
  description = "Enter previous created Dynamic Group for the policies"
}
variable "create_compartment_policies" {
  default     = true
  description = "Creates policies that will reside on the compartment. e.g.: Policies to support Cluster Autoscaler, OCI Logging datasource on Grafana"
}
variable "create_tenancy_policies" {
  default     = true
  description = "Creates policies that need to reside on the tenancy. e.g.: Policies to support OCI Metrics datasource on Grafana"
}

# ORM Schema visual control variables
variable "show_advanced" {
  default = false
}

# App Name Locals
locals {
  app_name_normalized = substr(replace(lower(var.app_name), " ", "-"), 0, 6)
  app_name_for_db     = regex("[[:alnum:]]{1,10}", var.app_name)
}

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