Guidance for Atlas Backups

variable "org_id" {
  description = "Atlas organization ID"
  type        = string
}
variable "project_name" {
  description = "Atlas project name"
  type        = string
}
variable "cluster_name" {
  description = "Atlas Cluster Name"
  type        = string
}
variable "point_in_time_utc_seconds" {
  description = "PIT in UTC"
  default     = 0
  type        = number
}

locals {
 atlas_clusters = {
    "cluster_1" = { name = "m10-aws-1e", region = "US_EAST_1" },
    "cluster_2" = { name = "m10-aws-2e", region = "US_EAST_2" },
  }
}
resource "mongodbatlas_project" "atlas-project" {
  org_id = var.org_id
  name   = var.project_name
}
resource "mongodbatlas_advanced_cluster" "automated_backup_test_cluster" {
  for_each     = local.atlas_clusters
  project_id   = mongodbatlas_project.atlas-project.id
 name         = each.value.name
  cluster_type = "REPLICASET"
 replication_specs {
    region_configs {
      electable_specs {
        instance_size = "M10"
        node_count    = 3
      }
      analytics_specs {
        instance_size = "M10"
        node_count    = 1
      }
      provider_name = "AWS"
      region_name   = each.value.region
      priority      = 7
    }
  }
  backup_enabled = true # enable cloud backup snapshots
  pit_enabled    = true
}
resource "mongodbatlas_cloud_backup_schedule" "test" {
  for_each                 = local.atlas_clusters
  project_id               = mongodbatlas_project.atlas-project.id
  cluster_name             = mongodbatlas_advanced_cluster.automated_backup_test_cluster[each.key].name
  reference_hour_of_day    = 3  # backup start hour in UTC
  reference_minute_of_hour = 45 # backup start minute in UTC
  restore_window_days      = 7  # Restore window for near-zero RPO
  copy_settings {
    cloud_provider = "AWS"
    frequencies = ["HOURLY",
      "DAILY",
      "WEEKLY",
      "MONTHLY",
      "YEARLY",
    "ON_DEMAND"]
    region_name        = "US_WEST_1"
    zone_id            = mongodbatlas_advanced_cluster.automated_backup_test_cluster[each.key].replication_specs.*.zone_id[0]
    should_copy_oplogs = true
  }
  policy_item_hourly {
    frequency_interval = 12 # backup every 12 hours, accepted values = 1, 2, 4, 6, 8, 12 -> every n hours
    retention_unit     = "days"
    retention_value    = 7  # retain for 7 days
  }
  policy_item_daily {
    frequency_interval = 1 # backup every day, accepted values = 1 -> every 1 day
    retention_unit     = "days"
   retention_value     = 7 # retain for 7 days
  }
  policy_item_weekly {
    frequency_interval = 7 # every Sunday, accepted values = 1 to 7 -> every 1=Monday,2=Tuesday,3=Wednesday,4=Thursday,5=Friday,6=Saturday,7=Sunday day of the week
    retention_unit     = "weeks"
    retention_value    = 4 # retain for 4 weeks
  }
  policy_item_monthly {
    frequency_interval = 28 # accepted values = 1 to 28 -> 1 to 28 every nth day of the month
    retention_unit  = "months"
    retention_value = 3 # retain for 3 months
  }
  depends_on = [
    mongodbatlas_advanced_cluster.automated_backup_test_cluster
  ]
}

locals {
 atlas_clusters = {
    "cluster_1" = { name = "m10-aws-1e", region = "US_EAST_1" },
    "cluster_2" = { name = "m10-aws-2e", region = "US_EAST_2" },
  }
}
resource "mongodbatlas_project" "atlas-project" {
  org_id = var.org_id
  name   = var.project_name
}
resource "mongodbatlas_advanced_cluster" "automated_backup_test_cluster" {
  for_each     = local.atlas_clusters
  project_id   = mongodbatlas_project.atlas-project.id
 name         = each.value.name
  cluster_type = "REPLICASET"
 replication_specs {
    region_configs {
      electable_specs {
        instance_size = "M10"
        node_count    = 3
      }
      analytics_specs {
        instance_size = "M10"
        node_count    = 1
      }
      provider_name = "AWS"
      region_name   = each.value.region
      priority      = 7
    }
  }
  backup_enabled = true # enable cloud backup snapshots
  pit_enabled    = true
}
resource "mongodbatlas_cloud_backup_schedule" "test" {
  for_each                 = local.atlas_clusters
  project_id               = mongodbatlas_project.atlas-project.id
  cluster_name             = mongodbatlas_advanced_cluster.automated_backup_test_cluster[each.key].name
  reference_hour_of_day    = 3  # backup start hour in UTC
  reference_minute_of_hour = 45 # backup start minute in UTC
  restore_window_days      = 7  # Restore window for near-zero RPO
  copy_settings {
    cloud_provider = "AWS"
    frequencies = ["HOURLY",
      "DAILY",
      "WEEKLY",
      "MONTHLY",
      "YEARLY",
    "ON_DEMAND"]
    region_name        = "US_WEST_1"
    zone_id            = mongodbatlas_advanced_cluster.automated_backup_test_cluster[each.key].replication_specs.*.zone_id[0]
    should_copy_oplogs = true
  }
  policy_item_daily {
    frequency_interval = 1 # backup every day, accepted values = 1 -> every 1 day
    retention_unit     = "days"
   retention_value     = 7 # retain for 7 days
  }
  policy_item_weekly {
    frequency_interval = 7 # every Sunday, accepted values = 1 to 7 -> every 1=Monday,2=Tuesday,3=Wednesday,4=Thursday,5=Friday,6=Saturday,7=Sunday day of the week
    retention_unit     = "weeks"
    retention_value    = 4 # retain for 4 weeks
  }
  policy_item_monthly {
    frequency_interval = 28 # accepted values = 1 to 28 -> 1 to 28 every nth day of the month
    # accepted values = 40 -> every last day of the month
    retention_unit  = "months"
    retention_value = 3 # retain for 3 months
  }
  depends_on = [
    mongodbatlas_advanced_cluster.automated_backup_test_cluster
  ]
}

locals {
 atlas_clusters = {
    "cluster_1" = { name = "m10-aws-1e", region = "US_EAST_1" },
    "cluster_2" = { name = "m10-aws-2e", region = "US_EAST_2" },
  }
}
resource "mongodbatlas_project" "atlas-project" {
  org_id = var.org_id
  name   = var.project_name
}
resource "mongodbatlas_advanced_cluster" "automated_backup_test_cluster" {
  for_each     = local.atlas_clusters
  project_id   = mongodbatlas_project.atlas-project.id
 name         = each.value.name
  cluster_type = "REPLICASET"
 replication_specs {
    region_configs {
      electable_specs {
        instance_size = "M10"
        node_count    = 3
      }
      analytics_specs {
        instance_size = "M10"
        node_count    = 1
      }
      provider_name = "AWS"
      region_name   = each.value.region
      priority      = 7
    }
  }
  backup_enabled = true # enable cloud backup snapshots
  pit_enabled    = true
}
resource "mongodbatlas_cloud_backup_schedule" "test" {
  for_each                 = local.atlas_clusters
  project_id               = mongodbatlas_project.atlas-project.id
  cluster_name             = mongodbatlas_advanced_cluster.automated_backup_test_cluster[each.key].name
  reference_hour_of_day    = 3  # backup start hour in UTC
  reference_minute_of_hour = 45 # backup start minute in UTC
  restore_window_days      = 7  # Restore window for near-zero RPO
  copy_settings {
    cloud_provider = "AWS"
    frequencies = ["HOURLY",
      "DAILY",
      "WEEKLY",
      "MONTHLY",
      "YEARLY",
    "ON_DEMAND"]
    region_name        = "US_WEST_1"
    zone_id            = mongodbatlas_advanced_cluster.automated_backup_test_cluster[each.key].replication_specs.*.zone_id[0]
    should_copy_oplogs = true
  }
  policy_item_daily {
    frequency_interval = 1 # backup every day, accepted values = 1 -> every 1 day
    retention_unit     = "days"
   retention_value     = 7 # retain for 7 days
  }
  policy_item_weekly {
    frequency_interval = 7 # every Sunday, accepted values = 1 to 7 -> every 1=Monday,2=Tuesday,3=Wednesday,4=Thursday,5=Friday,6=Saturday,7=Sunday day of the week
    retention_unit     = "weeks"
    retention_value    = 4 # retain for 4 weeks
  }
  policy_item_monthly {
    frequency_interval = 28 # accepted values = 1 to 28 -> 1 to 28 every nth day of the month
    # accepted values = 40 -> every last day of the month
    retention_unit  = "months"
    retention_value = 3 # retain for 3 months
  }
  depends_on = [
    mongodbatlas_advanced_cluster.automated_backup_test_cluster
  ]
}

# Create a project
resource "mongodbatlas_project" "project_test" {
  name   = var.project_name
  org_id = var.org_id
}
# Create a cluster with 3 nodes
resource "mongodbatlas_advanced_cluster" "cluster_test" {
  project_id   = mongodbatlas_project.project_test.id
  name         = var.cluster_name
  cluster_type = "REPLICASET"
  backup_enabled         = true # enable cloud provider snapshots
  pit_enabled            = true
  retain_backups_enabled = true # keep the backup snapshopts once the cluster is deleted
  replication_specs {
    region_configs {
      priority      = 7
      provider_name = "AWS"
      region_name   = "US_EAST_1"
      electable_specs {
        instance_size = "M10"
        node_count    = 3
      }
    }
  }
}
# Specify number of days to retain backup snapshots
resource "mongodbatlas_cloud_backup_snapshot" "test" {
  project_id        = mongodbatlas_advanced_cluster.cluster_test.project_id
  cluster_name      = mongodbatlas_advanced_cluster.cluster_test.name
  description       = "My description"
  retention_in_days = "1"
}
# Specify the snapshot ID to use to restore
resource "mongodbatlas_cloud_backup_snapshot_restore_job" "test" {
  count        = (var.point_in_time_utc_seconds == 0 ? 0 : 1)
  project_id   = mongodbatlas_cloud_backup_snapshot.test.project_id
  cluster_name = mongodbatlas_cloud_backup_snapshot.test.cluster_name
  snapshot_id  = mongodbatlas_cloud_backup_snapshot.test.id
  delivery_type_config {
    point_in_time             = true
    target_cluster_name       = mongodbatlas_advanced_cluster.cluster_test.name
    target_project_id         = mongodbatlas_advanced_cluster.cluster_test.project_id
    point_in_time_utc_seconds = var.point_in_time_utc_seconds
  }
}