main.tf

moved {
  from = module.ssh-key.tls_private_key.ssh
  to   = tls_private_key.ssh[0]
}

resource "tls_private_key" "ssh" {
  count = var.admin_username == null ? 0 : 1

  algorithm = "RSA"
  rsa_bits  = 2048
}

resource "azurerm_kubernetes_cluster" "main" {
  location                            = var.location
  name                                = "${local.cluster_name}${var.cluster_name_random_suffix ? substr(md5(uuid()), 0, 4) : ""}"
  resource_group_name                 = var.resource_group_name
  azure_policy_enabled                = var.azure_policy_enabled
  cost_analysis_enabled               = var.cost_analysis_enabled
  disk_encryption_set_id              = var.disk_encryption_set_id
  dns_prefix                          = var.prefix
  dns_prefix_private_cluster          = var.dns_prefix_private_cluster
  image_cleaner_enabled               = var.image_cleaner_enabled
  image_cleaner_interval_hours        = var.image_cleaner_interval_hours
  kubernetes_version                  = var.kubernetes_version
  local_account_disabled              = var.local_account_disabled
  node_resource_group                 = var.node_resource_group
  oidc_issuer_enabled                 = var.oidc_issuer_enabled
  open_service_mesh_enabled           = var.open_service_mesh_enabled
  private_cluster_public_fqdn_enabled = var.private_cluster_public_fqdn_enabled
  private_dns_zone_id                 = var.private_dns_zone_id
  role_based_access_control_enabled   = var.role_based_access_control_enabled
  run_command_enabled                 = var.run_command_enabled
  sku_tier                            = var.sku_tier
  support_plan                        = var.support_plan
  tags                                = var.tags
  workload_identity_enabled           = var.workload_identity_enabled

  dynamic "default_node_pool" {
    for_each = var.enable_auto_scaling == true ? [] : ["default_node_pool_manually_scaled"]

    content {
      name                         = var.agents_pool_name
      vm_size                      = var.agents_size
      enable_auto_scaling          = var.enable_auto_scaling
      enable_host_encryption       = var.enable_host_encryption
      enable_node_public_ip        = var.enable_node_public_ip
      fips_enabled                 = var.default_node_pool_fips_enabled
      max_count                    = null
      max_pods                     = var.agents_max_pods
      min_count                    = null
      node_count                   = var.agents_count
      node_labels                  = var.agents_labels
      only_critical_addons_enabled = var.only_critical_addons_enabled
      orchestrator_version         = var.orchestrator_version
      os_disk_size_gb              = var.os_disk_size_gb
      os_disk_type                 = var.os_disk_type
      os_sku                       = var.os_sku
      pod_subnet_id                = try(var.pod_subnet.id, null)
      proximity_placement_group_id = var.agents_proximity_placement_group_id
      scale_down_mode              = var.scale_down_mode
      snapshot_id                  = var.snapshot_id
      tags                         = merge(var.tags, var.agents_tags)
      temporary_name_for_rotation  = var.temporary_name_for_rotation
      type                         = var.agents_type
      ultra_ssd_enabled            = var.ultra_ssd_enabled
      vnet_subnet_id               = try(var.vnet_subnet.id, null)
      zones                        = var.agents_availability_zones

      dynamic "kubelet_config" {
        for_each = var.agents_pool_kubelet_configs

        content {
          allowed_unsafe_sysctls    = kubelet_config.value.allowed_unsafe_sysctls
          container_log_max_line    = kubelet_config.value.container_log_max_line
          container_log_max_size_mb = kubelet_config.value.container_log_max_size_mb
          cpu_cfs_quota_enabled     = kubelet_config.value.cpu_cfs_quota_enabled
          cpu_cfs_quota_period      = kubelet_config.value.cpu_cfs_quota_period
          cpu_manager_policy        = kubelet_config.value.cpu_manager_policy
          image_gc_high_threshold   = kubelet_config.value.image_gc_high_threshold
          image_gc_low_threshold    = kubelet_config.value.image_gc_low_threshold
          pod_max_pid               = kubelet_config.value.pod_max_pid
          topology_manager_policy   = kubelet_config.value.topology_manager_policy
        }
      }
      dynamic "linux_os_config" {
        for_each = var.agents_pool_linux_os_configs

        content {
          swap_file_size_mb             = linux_os_config.value.swap_file_size_mb
          transparent_huge_page_defrag  = linux_os_config.value.transparent_huge_page_defrag
          transparent_huge_page_enabled = linux_os_config.value.transparent_huge_page_enabled

          dynamic "sysctl_config" {
            for_each = linux_os_config.value.sysctl_configs == null ? [] : linux_os_config.value.sysctl_configs

            content {
              fs_aio_max_nr                      = sysctl_config.value.fs_aio_max_nr
              fs_file_max                        = sysctl_config.value.fs_file_max
              fs_inotify_max_user_watches        = sysctl_config.value.fs_inotify_max_user_watches
              fs_nr_open                         = sysctl_config.value.fs_nr_open
              kernel_threads_max                 = sysctl_config.value.kernel_threads_max
              net_core_netdev_max_backlog        = sysctl_config.value.net_core_netdev_max_backlog
              net_core_optmem_max                = sysctl_config.value.net_core_optmem_max
              net_core_rmem_default              = sysctl_config.value.net_core_rmem_default
              net_core_rmem_max                  = sysctl_config.value.net_core_rmem_max
              net_core_somaxconn                 = sysctl_config.value.net_core_somaxconn
              net_core_wmem_default              = sysctl_config.value.net_core_wmem_default
              net_core_wmem_max                  = sysctl_config.value.net_core_wmem_max
              net_ipv4_ip_local_port_range_max   = sysctl_config.value.net_ipv4_ip_local_port_range_max
              net_ipv4_ip_local_port_range_min   = sysctl_config.value.net_ipv4_ip_local_port_range_min
              net_ipv4_neigh_default_gc_thresh1  = sysctl_config.value.net_ipv4_neigh_default_gc_thresh1
              net_ipv4_neigh_default_gc_thresh2  = sysctl_config.value.net_ipv4_neigh_default_gc_thresh2
              net_ipv4_neigh_default_gc_thresh3  = sysctl_config.value.net_ipv4_neigh_default_gc_thresh3
              net_ipv4_tcp_fin_timeout           = sysctl_config.value.net_ipv4_tcp_fin_timeout
              net_ipv4_tcp_keepalive_intvl       = sysctl_config.value.net_ipv4_tcp_keepalive_intvl
              net_ipv4_tcp_keepalive_probes      = sysctl_config.value.net_ipv4_tcp_keepalive_probes
              net_ipv4_tcp_keepalive_time        = sysctl_config.value.net_ipv4_tcp_keepalive_time
              net_ipv4_tcp_max_syn_backlog       = sysctl_config.value.net_ipv4_tcp_max_syn_backlog
              net_ipv4_tcp_max_tw_buckets        = sysctl_config.value.net_ipv4_tcp_max_tw_buckets
              net_ipv4_tcp_tw_reuse              = sysctl_config.value.net_ipv4_tcp_tw_reuse
              net_netfilter_nf_conntrack_buckets = sysctl_config.value.net_netfilter_nf_conntrack_buckets
              net_netfilter_nf_conntrack_max     = sysctl_config.value.net_netfilter_nf_conntrack_max
              vm_max_map_count                   = sysctl_config.value.vm_max_map_count
              vm_swappiness                      = sysctl_config.value.vm_swappiness
              vm_vfs_cache_pressure              = sysctl_config.value.vm_vfs_cache_pressure
            }
          }
        }
      }
      dynamic "node_network_profile" {
        for_each = var.node_network_profile == null ? [] : [var.node_network_profile]

        content {
          application_security_group_ids = node_network_profile.value.application_security_group_ids
          node_public_ip_tags            = node_network_profile.value.node_public_ip_tags

          dynamic "allowed_host_ports" {
            for_each = node_network_profile.value.allowed_host_ports == null ? [] : node_network_profile.value.allowed_host_ports

            content {
              port_end   = allowed_host_ports.value.port_end
              port_start = allowed_host_ports.value.port_start
              protocol   = allowed_host_ports.value.protocol
            }
          }
        }
      }
      dynamic "upgrade_settings" {
        for_each = var.agents_pool_max_surge == null ? [] : ["upgrade_settings"]

        content {
          max_surge                     = var.agents_pool_max_surge
          drain_timeout_in_minutes      = var.agents_pool_drain_timeout_in_minutes
          node_soak_duration_in_minutes = var.agents_pool_node_soak_duration_in_minutes
        }
      }
    }
  }
  dynamic "default_node_pool" {
    for_each = var.enable_auto_scaling == true ? ["default_node_pool_auto_scaled"] : []

    content {
      name                         = var.agents_pool_name
      vm_size                      = var.agents_size
      enable_auto_scaling          = var.enable_auto_scaling
      enable_host_encryption       = var.enable_host_encryption
      enable_node_public_ip        = var.enable_node_public_ip
      fips_enabled                 = var.default_node_pool_fips_enabled
      max_count                    = var.agents_max_count
      max_pods                     = var.agents_max_pods
      min_count                    = var.agents_min_count
      node_labels                  = var.agents_labels
      only_critical_addons_enabled = var.only_critical_addons_enabled
      orchestrator_version         = var.orchestrator_version
      os_disk_size_gb              = var.os_disk_size_gb
      os_disk_type                 = var.os_disk_type
      os_sku                       = var.os_sku
      pod_subnet_id                = try(var.pod_subnet.id, null)
      proximity_placement_group_id = var.agents_proximity_placement_group_id
      scale_down_mode              = var.scale_down_mode
      snapshot_id                  = var.snapshot_id
      tags                         = merge(var.tags, var.agents_tags)
      temporary_name_for_rotation  = var.temporary_name_for_rotation
      type                         = var.agents_type
      ultra_ssd_enabled            = var.ultra_ssd_enabled
      vnet_subnet_id               = try(var.vnet_subnet.id, null)
      zones                        = var.agents_availability_zones

      dynamic "kubelet_config" {
        for_each = var.agents_pool_kubelet_configs

        content {
          allowed_unsafe_sysctls    = kubelet_config.value.allowed_unsafe_sysctls
          container_log_max_line    = kubelet_config.value.container_log_max_line
          container_log_max_size_mb = kubelet_config.value.container_log_max_size_mb
          cpu_cfs_quota_enabled     = kubelet_config.value.cpu_cfs_quota_enabled
          cpu_cfs_quota_period      = kubelet_config.value.cpu_cfs_quota_period
          cpu_manager_policy        = kubelet_config.value.cpu_manager_policy
          image_gc_high_threshold   = kubelet_config.value.image_gc_high_threshold
          image_gc_low_threshold    = kubelet_config.value.image_gc_low_threshold
          pod_max_pid               = kubelet_config.value.pod_max_pid
          topology_manager_policy   = kubelet_config.value.topology_manager_policy
        }
      }
      dynamic "linux_os_config" {
        for_each = var.agents_pool_linux_os_configs

        content {
          swap_file_size_mb             = linux_os_config.value.swap_file_size_mb
          transparent_huge_page_defrag  = linux_os_config.value.transparent_huge_page_defrag
          transparent_huge_page_enabled = linux_os_config.value.transparent_huge_page_enabled

          dynamic "sysctl_config" {
            for_each = linux_os_config.value.sysctl_configs == null ? [] : linux_os_config.value.sysctl_configs

            content {
              fs_aio_max_nr                      = sysctl_config.value.fs_aio_max_nr
              fs_file_max                        = sysctl_config.value.fs_file_max
              fs_inotify_max_user_watches        = sysctl_config.value.fs_inotify_max_user_watches
              fs_nr_open                         = sysctl_config.value.fs_nr_open
              kernel_threads_max                 = sysctl_config.value.kernel_threads_max
              net_core_netdev_max_backlog        = sysctl_config.value.net_core_netdev_max_backlog
              net_core_optmem_max                = sysctl_config.value.net_core_optmem_max
              net_core_rmem_default              = sysctl_config.value.net_core_rmem_default
              net_core_rmem_max                  = sysctl_config.value.net_core_rmem_max
              net_core_somaxconn                 = sysctl_config.value.net_core_somaxconn
              net_core_wmem_default              = sysctl_config.value.net_core_wmem_default
              net_core_wmem_max                  = sysctl_config.value.net_core_wmem_max
              net_ipv4_ip_local_port_range_max   = sysctl_config.value.net_ipv4_ip_local_port_range_max
              net_ipv4_ip_local_port_range_min   = sysctl_config.value.net_ipv4_ip_local_port_range_min
              net_ipv4_neigh_default_gc_thresh1  = sysctl_config.value.net_ipv4_neigh_default_gc_thresh1
              net_ipv4_neigh_default_gc_thresh2  = sysctl_config.value.net_ipv4_neigh_default_gc_thresh2
              net_ipv4_neigh_default_gc_thresh3  = sysctl_config.value.net_ipv4_neigh_default_gc_thresh3
              net_ipv4_tcp_fin_timeout           = sysctl_config.value.net_ipv4_tcp_fin_timeout
              net_ipv4_tcp_keepalive_intvl       = sysctl_config.value.net_ipv4_tcp_keepalive_intvl
              net_ipv4_tcp_keepalive_probes      = sysctl_config.value.net_ipv4_tcp_keepalive_probes
              net_ipv4_tcp_keepalive_time        = sysctl_config.value.net_ipv4_tcp_keepalive_time
              net_ipv4_tcp_max_syn_backlog       = sysctl_config.value.net_ipv4_tcp_max_syn_backlog
              net_ipv4_tcp_max_tw_buckets        = sysctl_config.value.net_ipv4_tcp_max_tw_buckets
              net_ipv4_tcp_tw_reuse              = sysctl_config.value.net_ipv4_tcp_tw_reuse
              net_netfilter_nf_conntrack_buckets = sysctl_config.value.net_netfilter_nf_conntrack_buckets
              net_netfilter_nf_conntrack_max     = sysctl_config.value.net_netfilter_nf_conntrack_max
              vm_max_map_count                   = sysctl_config.value.vm_max_map_count
              vm_swappiness                      = sysctl_config.value.vm_swappiness
              vm_vfs_cache_pressure              = sysctl_config.value.vm_vfs_cache_pressure
            }
          }
        }
      }
      dynamic "upgrade_settings" {
        for_each = var.agents_pool_max_surge == null ? [] : ["upgrade_settings"]

        content {
          max_surge                     = var.agents_pool_max_surge
          drain_timeout_in_minutes      = var.agents_pool_drain_timeout_in_minutes
          node_soak_duration_in_minutes = var.agents_pool_node_soak_duration_in_minutes
        }
      }
    }
  }
  dynamic "aci_connector_linux" {
    for_each = var.aci_connector_linux_enabled ? ["aci_connector_linux"] : []

    content {
      subnet_name = var.aci_connector_linux_subnet_name
    }
  }
  dynamic "api_server_access_profile" {
    for_each = var.api_server_authorized_ip_ranges != null ? [
      "api_server_access_profile"
    ] : []

    content {
      authorized_ip_ranges = var.api_server_authorized_ip_ranges
    }
  }
  dynamic "auto_scaler_profile" {
    for_each = var.auto_scaler_profile_enabled ? ["default_auto_scaler_profile"] : []

    content {
      balance_similar_node_groups      = var.auto_scaler_profile_balance_similar_node_groups
      empty_bulk_delete_max            = var.auto_scaler_profile_empty_bulk_delete_max
      expander                         = var.auto_scaler_profile_expander
      max_graceful_termination_sec     = var.auto_scaler_profile_max_graceful_termination_sec
      max_node_provisioning_time       = var.auto_scaler_profile_max_node_provisioning_time
      max_unready_nodes                = var.auto_scaler_profile_max_unready_nodes
      max_unready_percentage           = var.auto_scaler_profile_max_unready_percentage
      new_pod_scale_up_delay           = var.auto_scaler_profile_new_pod_scale_up_delay
      scale_down_delay_after_add       = var.auto_scaler_profile_scale_down_delay_after_add
      scale_down_delay_after_delete    = local.auto_scaler_profile_scale_down_delay_after_delete
      scale_down_delay_after_failure   = var.auto_scaler_profile_scale_down_delay_after_failure
      scale_down_unneeded              = var.auto_scaler_profile_scale_down_unneeded
      scale_down_unready               = var.auto_scaler_profile_scale_down_unready
      scale_down_utilization_threshold = var.auto_scaler_profile_scale_down_utilization_threshold
      scan_interval                    = var.auto_scaler_profile_scan_interval
      skip_nodes_with_local_storage    = var.auto_scaler_profile_skip_nodes_with_local_storage
      skip_nodes_with_system_pods      = var.auto_scaler_profile_skip_nodes_with_system_pods
    }
  }
  dynamic "azure_active_directory_role_based_access_control" {
    for_each = var.role_based_access_control_enabled && var.rbac_aad ? ["rbac"] : []

    content {
      admin_group_object_ids = var.rbac_aad_admin_group_object_ids
      azure_rbac_enabled     = var.rbac_aad_azure_rbac_enabled
      managed                = true
      tenant_id              = var.rbac_aad_tenant_id
    }
  }
  dynamic "confidential_computing" {
    for_each = var.confidential_computing == null ? [] : [var.confidential_computing]

    content {
      sgx_quote_helper_enabled = confidential_computing.value.sgx_quote_helper_enabled
    }
  }
  dynamic "http_proxy_config" {
    for_each = var.http_proxy_config == null ? [] : ["http_proxy_config"]

    content {
      http_proxy  = coalesce(var.http_proxy_config.http_proxy, var.http_proxy_config.https_proxy)
      https_proxy = coalesce(var.http_proxy_config.https_proxy, var.http_proxy_config.http_proxy)
      no_proxy    = var.http_proxy_config.no_proxy
      trusted_ca  = var.http_proxy_config.trusted_ca
    }
  }
  dynamic "identity" {
    for_each = var.client_id == "" || var.client_secret == "" ? ["identity"] : []

    content {
      type         = var.identity_type
      identity_ids = var.identity_ids
    }
  }
  dynamic "ingress_application_gateway" {
    for_each = local.ingress_application_gateway_enabled ? ["ingress_application_gateway"] : []

    content {
      gateway_id   = try(var.brown_field_application_gateway_for_ingress.id, null)
      gateway_name = try(var.green_field_application_gateway_for_ingress.name, null)
      subnet_cidr  = try(var.green_field_application_gateway_for_ingress.subnet_cidr, null)
      subnet_id    = try(var.green_field_application_gateway_for_ingress.subnet_id, null)
    }
  }
  dynamic "key_management_service" {
    for_each = var.kms_enabled ? ["key_management_service"] : []

    content {
      key_vault_key_id         = var.kms_key_vault_key_id
      key_vault_network_access = var.kms_key_vault_network_access
    }
  }
  dynamic "key_vault_secrets_provider" {
    for_each = var.key_vault_secrets_provider_enabled ? ["key_vault_secrets_provider"] : []

    content {
      secret_rotation_enabled  = var.secret_rotation_enabled
      secret_rotation_interval = var.secret_rotation_interval
    }
  }
  dynamic "kubelet_identity" {
    for_each = var.kubelet_identity == null ? [] : [var.kubelet_identity]

    content {
      client_id                 = kubelet_identity.value.client_id
      object_id                 = kubelet_identity.value.object_id
      user_assigned_identity_id = kubelet_identity.value.user_assigned_identity_id
    }
  }
  dynamic "linux_profile" {
    for_each = var.admin_username == null ? [] : ["linux_profile"]

    content {
      admin_username = var.admin_username

      ssh_key {
        key_data = replace(coalesce(var.public_ssh_key, tls_private_key.ssh[0].public_key_openssh), "\n", "")
      }
    }
  }
  dynamic "maintenance_window" {
    for_each = var.maintenance_window != null ? ["maintenance_window"] : []

    content {
      dynamic "allowed" {
        for_each = var.maintenance_window.allowed

        content {
          day   = allowed.value.day
          hours = allowed.value.hours
        }
      }
      dynamic "not_allowed" {
        for_each = var.maintenance_window.not_allowed

        content {
          end   = not_allowed.value.end
          start = not_allowed.value.start
        }
      }
    }
  }
  dynamic "maintenance_window_auto_upgrade" {
    for_each = var.maintenance_window_auto_upgrade == null ? [] : [var.maintenance_window_auto_upgrade]

    content {
      duration     = maintenance_window_auto_upgrade.value.duration
      frequency    = maintenance_window_auto_upgrade.value.frequency
      interval     = maintenance_window_auto_upgrade.value.interval
      day_of_month = maintenance_window_auto_upgrade.value.day_of_month
      day_of_week  = maintenance_window_auto_upgrade.value.day_of_week
      start_date   = maintenance_window_auto_upgrade.value.start_date
      start_time   = maintenance_window_auto_upgrade.value.start_time
      utc_offset   = maintenance_window_auto_upgrade.value.utc_offset
      week_index   = maintenance_window_auto_upgrade.value.week_index

      dynamic "not_allowed" {
        for_each = maintenance_window_auto_upgrade.value.not_allowed == null ? [] : maintenance_window_auto_upgrade.value.not_allowed

        content {
          end   = not_allowed.value.end
          start = not_allowed.value.start
        }
      }
    }
  }
  dynamic "maintenance_window_node_os" {
    for_each = var.maintenance_window_node_os == null ? [] : [var.maintenance_window_node_os]

    content {
      duration     = maintenance_window_node_os.value.duration
      frequency    = maintenance_window_node_os.value.frequency
      interval     = maintenance_window_node_os.value.interval
      day_of_month = maintenance_window_node_os.value.day_of_month
      day_of_week  = maintenance_window_node_os.value.day_of_week
      start_date   = maintenance_window_node_os.value.start_date
      start_time   = maintenance_window_node_os.value.start_time
      utc_offset   = maintenance_window_node_os.value.utc_offset
      week_index   = maintenance_window_node_os.value.week_index

      dynamic "not_allowed" {
        for_each = maintenance_window_node_os.value.not_allowed == null ? [] : maintenance_window_node_os.value.not_allowed

        content {
          end   = not_allowed.value.end
          start = not_allowed.value.start
        }
      }
    }
  }
  dynamic "microsoft_defender" {
    for_each = var.microsoft_defender_enabled ? ["microsoft_defender"] : []

    content {
      log_analytics_workspace_id = local.log_analytics_workspace.id
    }
  }
  dynamic "monitor_metrics" {
    for_each = var.monitor_metrics != null ? ["monitor_metrics"] : []

    content {
      annotations_allowed = var.monitor_metrics.annotations_allowed
      labels_allowed      = var.monitor_metrics.labels_allowed
    }
  }
  network_profile {
    network_plugin      = var.network_plugin
    dns_service_ip      = var.net_profile_dns_service_ip
    ebpf_data_plane     = var.ebpf_data_plane
    ip_versions         = var.network_ip_versions
    load_balancer_sku   = var.load_balancer_sku
    network_data_plane  = var.network_data_plane
    network_mode        = var.network_mode
    network_plugin_mode = var.network_plugin_mode
    network_policy      = var.network_policy
    outbound_type       = var.net_profile_outbound_type
    pod_cidr            = var.net_profile_pod_cidr
    pod_cidrs           = var.net_profile_pod_cidrs
    service_cidr        = var.net_profile_service_cidr
    service_cidrs       = var.net_profile_service_cidrs

    dynamic "load_balancer_profile" {
      for_each = var.load_balancer_profile_enabled && var.load_balancer_sku == "standard" ? [
        "load_balancer_profile"
      ] : []

      content {
        idle_timeout_in_minutes     = var.load_balancer_profile_idle_timeout_in_minutes
        managed_outbound_ip_count   = var.load_balancer_profile_managed_outbound_ip_count
        managed_outbound_ipv6_count = var.load_balancer_profile_managed_outbound_ipv6_count
        outbound_ip_address_ids     = var.load_balancer_profile_outbound_ip_address_ids
        outbound_ip_prefix_ids      = var.load_balancer_profile_outbound_ip_prefix_ids
        outbound_ports_allocated    = var.load_balancer_profile_outbound_ports_allocated
      }
    }
    dynamic "nat_gateway_profile" {
      for_each = var.nat_gateway_profile == null ? [] : [var.nat_gateway_profile]

      content {
        idle_timeout_in_minutes   = nat_gateway_profile.value.idle_timeout_in_minutes
        managed_outbound_ip_count = nat_gateway_profile.value.managed_outbound_ip_count
      }
    }
  }
  dynamic "oms_agent" {
    for_each = (var.log_analytics_workspace_enabled && var.oms_agent_enabled) ? ["oms_agent"] : []

    content {
      log_analytics_workspace_id      = local.log_analytics_workspace.id
      msi_auth_for_monitoring_enabled = var.msi_auth_for_monitoring_enabled
    }
  }
  dynamic "service_mesh_profile" {
    for_each = var.service_mesh_profile == null ? [] : ["service_mesh_profile"]

    content {
      mode                             = var.service_mesh_profile.mode
      external_ingress_gateway_enabled = var.service_mesh_profile.external_ingress_gateway_enabled
      internal_ingress_gateway_enabled = var.service_mesh_profile.internal_ingress_gateway_enabled
    }
  }
  dynamic "service_principal" {
    for_each = var.client_id != "" && var.client_secret != "" ? ["service_principal"] : []

    content {
      client_id     = var.client_id
      client_secret = var.client_secret
    }
  }
  dynamic "storage_profile" {
    for_each = var.storage_profile_enabled ? ["storage_profile"] : []

    content {
      blob_driver_enabled         = var.storage_profile_blob_driver_enabled
      disk_driver_enabled         = var.storage_profile_disk_driver_enabled
      disk_driver_version         = var.storage_profile_disk_driver_version
      file_driver_enabled         = var.storage_profile_file_driver_enabled
      snapshot_controller_enabled = var.storage_profile_snapshot_controller_enabled
    }
  }
  dynamic "web_app_routing" {
    for_each = var.web_app_routing == null ? [] : ["web_app_routing"]

    content {
      dns_zone_ids = var.web_app_routing.dns_zone_ids
    }
  }
  dynamic "workload_autoscaler_profile" {
    for_each = var.workload_autoscaler_profile == null ? [] : [var.workload_autoscaler_profile]

    content {
      keda_enabled                    = workload_autoscaler_profile.value.keda_enabled
      vertical_pod_autoscaler_enabled = workload_autoscaler_profile.value.vertical_pod_autoscaler_enabled
    }
  }

  depends_on = [
    null_resource.pool_name_keeper,
  ]

  lifecycle {
    ignore_changes = [
      http_application_routing_enabled,
      http_proxy_config[0].no_proxy,
      kubernetes_version,
      # we might have a random suffix in cluster's name so we have to ignore it here, but we've traced user supplied cluster name by `null_resource.kubernetes_cluster_name_keeper` so when the name is changed we'll recreate this resource.
      name,
    ]
    replace_triggered_by = [
      null_resource.kubernetes_cluster_name_keeper.id
    ]

    precondition {
      condition     = (var.client_id != "" && var.client_secret != "") || (var.identity_type != "")
      error_message = "Either `client_id` and `client_secret` or `identity_type` must be set."
    }
    precondition {
      # Why don't use var.identity_ids != null && length(var.identity_ids)>0 ? Because bool expression in Terraform is not short circuit so even var.identity_ids is null Terraform will still invoke length function with null and cause error. https://github.com/hashicorp/terraform/issues/24128
      condition     = (var.client_id != "" && var.client_secret != "") || (var.identity_type == "SystemAssigned") || (var.identity_ids == null ? false : length(var.identity_ids) > 0)
      error_message = "If use identity and `UserAssigned` is set, an `identity_ids` must be set as well."
    }
    precondition {
      condition     = var.identity_ids == null || var.client_id == ""
      error_message = "Cannot set both `client_id` and `identity_ids`."
    }
    precondition {
      condition     = var.cost_analysis_enabled != true || (var.sku_tier == "Standard" || var.sku_tier == "Premium")
      error_message = "`sku_tier` must be either `Standard` or `Premium` when cost analysis is enabled."
    }
    precondition {
      condition     = !(var.microsoft_defender_enabled && !var.log_analytics_workspace_enabled)
      error_message = "Enabling Microsoft Defender requires that `log_analytics_workspace_enabled` be set to true."
    }
    precondition {
      condition     = !(var.load_balancer_profile_enabled && var.load_balancer_sku != "standard")
      error_message = "Enabling load_balancer_profile requires that `load_balancer_sku` be set to `standard`"
    }
    precondition {
      condition     = local.automatic_channel_upgrade_check
      error_message = "Either disable automatic upgrades, or specify `kubernetes_version` or `orchestrator_version` only up to the minor version when using `automatic_channel_upgrade=patch`. You don't need to specify `kubernetes_version` at all when using `automatic_channel_upgrade=stable|rapid|node-image`, where `orchestrator_version` always must be set to `null`."
    }
    precondition {
      condition     = !(var.kms_enabled && var.identity_type != "UserAssigned")
      error_message = "KMS etcd encryption doesn't work with system-assigned managed identity."
    }
    precondition {
      condition     = !var.workload_identity_enabled || var.oidc_issuer_enabled
      error_message = "`oidc_issuer_enabled` must be set to `true` to enable Azure AD Workload Identity"
    }
    precondition {
      condition     = var.network_plugin_mode != "overlay" || var.network_plugin == "azure"
      error_message = "When network_plugin_mode is set to `overlay`, the network_plugin field can only be set to azure."
    }
    precondition {
      condition     = var.network_policy != "azure" || var.network_plugin == "azure"
      error_message = "network_policy must be `azure` when network_plugin is `azure`"
    }
    precondition {
      condition     = var.ebpf_data_plane != "cilium" || var.network_plugin == "azure"
      error_message = "When ebpf_data_plane is set to cilium, the network_plugin field can only be set to azure."
    }
    precondition {
      condition     = var.ebpf_data_plane != "cilium" || var.network_plugin_mode == "overlay" || var.pod_subnet != null
      error_message = "When ebpf_data_plane is set to cilium, one of either network_plugin_mode = `overlay` or pod_subnet.id must be specified."
    }
    precondition {
      condition     = can(coalesce(var.cluster_name, var.prefix, var.dns_prefix_private_cluster))
      error_message = "You must set one of `var.cluster_name`,`var.prefix`,`var.dns_prefix_private_cluster` to create `azurerm_kubernetes_cluster.main`."
    }
    precondition {
      condition     = var.automatic_channel_upgrade != "node-image" || var.node_os_channel_upgrade == "NodeImage"
      error_message = "`node_os_channel_upgrade` must be set to `NodeImage` if `automatic_channel_upgrade` has been set to `node-image`."
    }
    precondition {
      condition = (var.kubelet_identity == null) || (
      (var.client_id == "" || var.client_secret == "") && var.identity_type == "UserAssigned" && try(length(var.identity_ids), 0) > 0)
      error_message = "When `kubelet_identity` is enabled - The `type` field in the `identity` block must be set to `UserAssigned` and `identity_ids` must be set."
    }
    precondition {
      condition     = var.enable_auto_scaling != true || var.agents_type == "VirtualMachineScaleSets"
      error_message = "Autoscaling on default node pools is only supported when the Kubernetes Cluster is using Virtual Machine Scale Sets type nodes."
    }
    precondition {
      condition     = var.brown_field_application_gateway_for_ingress == null || var.green_field_application_gateway_for_ingress == null
      error_message = "Either one of `var.brown_field_application_gateway_for_ingress` or `var.green_field_application_gateway_for_ingress` must be `null`."
    }
    precondition {
      condition     = var.prefix == null || var.dns_prefix_private_cluster == null
      error_message = "Only one of `var.prefix,var.dns_prefix_private_cluster` can be specified."
    }
    precondition {
      condition     = var.dns_prefix_private_cluster == null || var.identity_type == "UserAssigned" || var.client_id != ""
      error_message = "A user assigned identity or a service principal must be used when using a custom private dns zone"
    }
    precondition {
      condition     = var.private_dns_zone_id == null ? true : (anytrue([for r in local.valid_private_dns_zone_regexs : try(regex(r, local.private_dns_zone_name) == local.private_dns_zone_name, false)]))
      error_message = "According to the [document](https://learn.microsoft.com/en-us/azure/aks/private-clusters?tabs=azure-portal#configure-a-private-dns-zone), the private DNS zone must be in one of the following format: `privatelink.<region>.azmk8s.io`, `<subzone>.privatelink.<region>.azmk8s.io`, `private.<region>.azmk8s.io`, `<subzone>.private.<region>.azmk8s.io`"
    }
  }
}

resource "null_resource" "kubernetes_cluster_name_keeper" {
  triggers = {
    name = local.cluster_name
  }
}

resource "null_resource" "kubernetes_version_keeper" {
  triggers = {
    version = var.kubernetes_version
  }
}

resource "time_sleep" "interval_before_cluster_update" {
  count = var.interval_before_cluster_update == null ? 0 : 1

  create_duration = var.interval_before_cluster_update

  depends_on = [
    azurerm_kubernetes_cluster.main,
  ]

  lifecycle {
    replace_triggered_by = [
      null_resource.kubernetes_version_keeper.id,
    ]
  }
}

resource "azapi_update_resource" "aks_cluster_post_create" {
  type = "Microsoft.ContainerService/managedClusters@2024-02-01"
  body = {
    properties = {
      kubernetesVersion = var.kubernetes_version
    }
  }
  resource_id = azurerm_kubernetes_cluster.main.id

  depends_on = [
    time_sleep.interval_before_cluster_update,
  ]

  lifecycle {
    ignore_changes       = all
    replace_triggered_by = [null_resource.kubernetes_version_keeper.id]
  }
}

resource "null_resource" "http_proxy_config_no_proxy_keeper" {
  count = can(var.http_proxy_config.no_proxy[0]) ? 1 : 0

  triggers = {
    http_proxy_no_proxy = try(join(",", try(sort(var.http_proxy_config.no_proxy), [])), "")
  }
}

resource "azapi_update_resource" "aks_cluster_http_proxy_config_no_proxy" {
  count = can(var.http_proxy_config.no_proxy[0]) ? 1 : 0

  type = "Microsoft.ContainerService/managedClusters@2024-02-01"
  body = {
    properties = {
      httpProxyConfig = {
        noProxy = var.http_proxy_config.no_proxy
      }
    }
  }
  resource_id = azurerm_kubernetes_cluster.main.id

  depends_on = [azapi_update_resource.aks_cluster_post_create]

  lifecycle {
    ignore_changes       = all
    replace_triggered_by = [null_resource.http_proxy_config_no_proxy_keeper[0].id]
  }
}