{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://docs.oracle.com/en-us/iaas/schemas/compute/instance.json",
  "title": "OCI Compute Instance",
  "description": "Schema for an Oracle Cloud Infrastructure compute instance. Defines the structure of a virtual machine or bare metal instance including its shape configuration, source image details, networking, lifecycle state, and metadata.",
  "type": "object",
  "required": [
    "id",
    "compartmentId",
    "availabilityDomain",
    "shape",
    "region",
    "lifecycleState",
    "timeCreated"
  ],
  "properties": {
    "id": {
      "type": "string",
      "description": "The OCID of the instance. Oracle Cloud Identifier (OCID) is a unique identifier assigned to every OCI resource.",
      "pattern": "^ocid1\\.instance\\..+$",
      "examples": ["ocid1.instance.oc1.phx.abcdefghijklmnop"]
    },
    "compartmentId": {
      "type": "string",
      "description": "The OCID of the compartment that contains the instance. Compartments are the primary building blocks for organizing cloud resources.",
      "pattern": "^ocid1\\.compartment\\..+$"
    },
    "availabilityDomain": {
      "type": "string",
      "description": "The availability domain the instance is running in. An availability domain is one or more data centers within a region.",
      "examples": ["Uocm:PHX-AD-1", "Uocm:US-ASHBURN-AD-1"]
    },
    "faultDomain": {
      "type": "string",
      "description": "The fault domain the instance is running in. Fault domains provide anti-affinity within an availability domain.",
      "examples": ["FAULT-DOMAIN-1", "FAULT-DOMAIN-2", "FAULT-DOMAIN-3"]
    },
    "displayName": {
      "type": "string",
      "description": "A user-friendly name for the instance. Does not have to be unique and is changeable. Avoid entering confidential information.",
      "maxLength": 255
    },
    "shape": {
      "type": "string",
      "description": "The shape of the instance. The shape determines the number of CPUs, amount of memory, and other resources allocated to the instance.",
      "examples": [
        "VM.Standard.E4.Flex",
        "VM.Standard3.Flex",
        "BM.Standard3.64",
        "VM.GPU.A10.1",
        "VM.DenseIO.E4.Flex",
        "VM.Standard.A1.Flex"
      ]
    },
    "shapeConfig": {
      "$ref": "#/$defs/ShapeConfig"
    },
    "region": {
      "type": "string",
      "description": "The region that contains the availability domain the instance is running in.",
      "examples": ["us-ashburn-1", "us-phoenix-1", "eu-frankfurt-1"]
    },
    "imageId": {
      "type": "string",
      "description": "Deprecated. Use sourceDetails instead. The OCID of the image used to boot the instance.",
      "pattern": "^ocid1\\.image\\..+$",
      "deprecated": true
    },
    "sourceDetails": {
      "$ref": "#/$defs/SourceDetails"
    },
    "lifecycleState": {
      "$ref": "#/$defs/LifecycleState"
    },
    "timeCreated": {
      "type": "string",
      "format": "date-time",
      "description": "The date and time the instance was created, in RFC 3339 format."
    },
    "metadata": {
      "type": "object",
      "description": "Custom metadata key/value pairs provided for the instance. Common keys include ssh_authorized_keys for providing SSH public keys and user_data for cloud-init scripts (base64-encoded).",
      "additionalProperties": {
        "type": "string"
      },
      "properties": {
        "ssh_authorized_keys": {
          "type": "string",
          "description": "One or more SSH public keys to be included in the ~/.ssh/authorized_keys file for the default user on the instance. Separate multiple keys with newline characters."
        },
        "user_data": {
          "type": "string",
          "description": "Base64-encoded cloud-init user data script to run when the instance starts."
        }
      }
    },
    "extendedMetadata": {
      "type": "object",
      "description": "Additional metadata key/value pairs that can contain nested JSON objects.",
      "additionalProperties": true
    },
    "launchMode": {
      "type": "string",
      "description": "Specifies the configuration mode for launching VM instances.",
      "enum": ["NATIVE", "EMULATED", "PARAVIRTUALIZED", "CUSTOM"]
    },
    "launchOptions": {
      "$ref": "#/$defs/LaunchOptions"
    },
    "agentConfig": {
      "$ref": "#/$defs/AgentConfig"
    },
    "availabilityConfig": {
      "$ref": "#/$defs/AvailabilityConfig"
    },
    "platformConfig": {
      "$ref": "#/$defs/PlatformConfig"
    },
    "timeMaintenanceRebootDue": {
      "type": "string",
      "format": "date-time",
      "description": "The date and time the instance is expected to be stopped or migrated for infrastructure maintenance, if applicable."
    },
    "capacityReservationId": {
      "type": "string",
      "description": "The OCID of the compute capacity reservation this instance is launched under.",
      "pattern": "^ocid1\\.capacityreservation\\..+$"
    },
    "dedicatedVmHostId": {
      "type": "string",
      "description": "The OCID of the dedicated virtual machine host the instance is placed on.",
      "pattern": "^ocid1\\.dedicatedvmhost\\..+$"
    },
    "isCrossNumaNode": {
      "type": "boolean",
      "description": "Whether the instance spans multiple NUMA nodes."
    },
    "definedTags": {
      "$ref": "#/$defs/DefinedTags"
    },
    "freeformTags": {
      "$ref": "#/$defs/FreeformTags"
    }
  },
  "$defs": {
    "LifecycleState": {
      "type": "string",
      "description": "The lifecycle state of a compute instance. The state transitions are: PROVISIONING -> RUNNING -> STOPPING -> STOPPED -> STARTING -> RUNNING, and RUNNING -> TERMINATING -> TERMINATED.",
      "enum": [
        "MOVING",
        "PROVISIONING",
        "RUNNING",
        "STARTING",
        "STOPPING",
        "STOPPED",
        "CREATING_IMAGE",
        "TERMINATING",
        "TERMINATED"
      ]
    },
    "ShapeConfig": {
      "type": "object",
      "description": "The shape configuration of an instance. For flexible shapes, this specifies the allocated OCPUs, memory, and other resources.",
      "properties": {
        "ocpus": {
          "type": "number",
          "description": "The total number of OCPUs available to the instance.",
          "minimum": 1,
          "examples": [1, 2, 4, 8, 16, 32, 64]
        },
        "memoryInGBs": {
          "type": "number",
          "description": "The total amount of memory available to the instance, in gigabytes.",
          "minimum": 1,
          "examples": [16, 32, 64, 128, 256, 512]
        },
        "baselineOcpuUtilization": {
          "type": "string",
          "description": "The baseline OCPU utilization for a subcore burstable instance. BASELINE_1_8 means 12.5% baseline, BASELINE_1_2 means 50% baseline, BASELINE_1_1 means 100% (non-burstable).",
          "enum": ["BASELINE_1_8", "BASELINE_1_2", "BASELINE_1_1"]
        },
        "processorDescription": {
          "type": "string",
          "description": "A short description of the instance processor.",
          "examples": ["2.55 GHz AMD EPYC 7J13 (Milan)", "3.0 GHz Ampere Altra (Arm-based)"]
        },
        "networkingBandwidthInGbps": {
          "type": "number",
          "description": "The networking bandwidth available to the instance, in gigabits per second."
        },
        "maxVnicAttachments": {
          "type": "integer",
          "description": "The maximum number of VNIC attachments for the instance.",
          "minimum": 1
        },
        "gpus": {
          "type": "integer",
          "description": "The number of GPUs available to the instance.",
          "minimum": 0
        },
        "gpuDescription": {
          "type": "string",
          "description": "A short description of the instance GPU.",
          "examples": ["NVIDIA A10", "NVIDIA A100"]
        },
        "localDisks": {
          "type": "integer",
          "description": "The number of local NVMe disks available to the instance.",
          "minimum": 0
        },
        "localDisksTotalSizeInGBs": {
          "type": "number",
          "description": "The aggregate size of all local disks, in gigabytes."
        },
        "vcpus": {
          "type": "integer",
          "description": "The total number of VCPUs available. This is typically 2x the number of OCPUs.",
          "minimum": 1
        }
      }
    },
    "SourceDetails": {
      "type": "object",
      "description": "Details for the source used to launch the instance. The source is either an image or a boot volume.",
      "required": ["sourceType"],
      "properties": {
        "sourceType": {
          "type": "string",
          "description": "The source type for the instance.",
          "enum": ["image", "bootVolume"]
        },
        "imageId": {
          "type": "string",
          "description": "The OCID of the image used to boot the instance. Required when sourceType is image.",
          "pattern": "^ocid1\\.image\\..+$"
        },
        "bootVolumeId": {
          "type": "string",
          "description": "The OCID of the boot volume used to boot the instance. Required when sourceType is bootVolume.",
          "pattern": "^ocid1\\.bootvolume\\..+$"
        },
        "bootVolumeSizeInGBs": {
          "type": "integer",
          "description": "The size of the boot volume in GBs.",
          "minimum": 50,
          "maximum": 32768
        },
        "bootVolumeVpusPerGB": {
          "type": "integer",
          "description": "The number of volume performance units per GB for the boot volume. 10 = Balanced, 20 = Higher Performance, 30-120 = Ultra High Performance.",
          "minimum": 10,
          "maximum": 120,
          "default": 10
        }
      },
      "if": {
        "properties": {
          "sourceType": { "const": "image" }
        }
      },
      "then": {
        "required": ["imageId"]
      },
      "else": {
        "required": ["bootVolumeId"]
      }
    },
    "LaunchOptions": {
      "type": "object",
      "description": "Options for tuning the compatibility and performance of VM shapes.",
      "properties": {
        "bootVolumeType": {
          "type": "string",
          "description": "Emulation type for the boot volume attachment.",
          "enum": ["ISCSI", "SCSI", "IDE", "VFIO", "PARAVIRTUALIZED"]
        },
        "firmware": {
          "type": "string",
          "description": "Firmware used to boot the VM.",
          "enum": ["BIOS", "UEFI_64"]
        },
        "networkType": {
          "type": "string",
          "description": "Emulation type for the physical network interface card.",
          "enum": ["E1000", "VFIO", "PARAVIRTUALIZED"]
        },
        "remoteDataVolumeType": {
          "type": "string",
          "description": "Emulation type for remote data volume attachments.",
          "enum": ["ISCSI", "SCSI", "IDE", "VFIO", "PARAVIRTUALIZED"]
        },
        "isPvEncryptionInTransitEnabled": {
          "type": "boolean",
          "description": "Whether in-transit encryption is enabled for the volume's paravirtualized attachment."
        },
        "isConsistentVolumeNamingEnabled": {
          "type": "boolean",
          "description": "Whether consistent volume naming is enabled."
        }
      }
    },
    "AgentConfig": {
      "type": "object",
      "description": "Configuration options for the Oracle Cloud Agent software running on the instance.",
      "properties": {
        "isMonitoringDisabled": {
          "type": "boolean",
          "description": "Whether the Monitoring plugin is disabled.",
          "default": false
        },
        "isManagementDisabled": {
          "type": "boolean",
          "description": "Whether the Management plugin is disabled.",
          "default": false
        },
        "areAllPluginsDisabled": {
          "type": "boolean",
          "description": "Whether all Oracle Cloud Agent plugins are disabled.",
          "default": false
        },
        "pluginsConfig": {
          "type": "array",
          "description": "The configuration of plugins associated with this instance.",
          "items": {
            "$ref": "#/$defs/PluginConfig"
          }
        }
      }
    },
    "PluginConfig": {
      "type": "object",
      "description": "Configuration details for an Oracle Cloud Agent plugin.",
      "required": ["name", "desiredState"],
      "properties": {
        "name": {
          "type": "string",
          "description": "The plugin name.",
          "examples": [
            "Vulnerability Scanning",
            "Compute RDMA GPU Monitoring",
            "Compute Instance Monitoring",
            "Bastion",
            "Management Agent",
            "Custom Logs Monitoring",
            "Compute Instance Run Command",
            "Block Volume Management"
          ]
        },
        "desiredState": {
          "type": "string",
          "description": "Whether the plugin should be enabled or disabled.",
          "enum": ["ENABLED", "DISABLED"]
        }
      }
    },
    "AvailabilityConfig": {
      "type": "object",
      "description": "Options for VM migration during infrastructure maintenance events.",
      "properties": {
        "isLiveMigrationPreferred": {
          "type": "boolean",
          "description": "Whether live migration is the preferred option for infrastructure maintenance."
        },
        "recoveryAction": {
          "type": "string",
          "description": "The lifecycle action to take when maintenance is due. RESTORE_INSTANCE restarts the instance after maintenance. STOP_INSTANCE keeps it stopped.",
          "enum": ["RESTORE_INSTANCE", "STOP_INSTANCE"]
        }
      }
    },
    "PlatformConfig": {
      "type": "object",
      "description": "The platform configuration for the instance, including security settings like Secure Boot and TPM.",
      "properties": {
        "type": {
          "type": "string",
          "description": "The type of platform configuration.",
          "enum": [
            "AMD_MILAN_BM",
            "AMD_MILAN_BM_GPU",
            "AMD_ROME_BM",
            "AMD_ROME_BM_GPU",
            "AMD_VM",
            "GENERIC_BM",
            "INTEL_ICELAKE_BM",
            "INTEL_SKYLAKE_BM",
            "INTEL_VM"
          ]
        },
        "isSecureBootEnabled": {
          "type": "boolean",
          "description": "Whether Secure Boot is enabled on the instance."
        },
        "isTrustedPlatformModuleEnabled": {
          "type": "boolean",
          "description": "Whether the Trusted Platform Module (TPM) is enabled."
        },
        "isMeasuredBootEnabled": {
          "type": "boolean",
          "description": "Whether the Measured Boot feature is enabled."
        },
        "isMemoryEncryptionEnabled": {
          "type": "boolean",
          "description": "Whether AMD Secure Encrypted Virtualization (SEV) memory encryption is enabled."
        }
      }
    },
    "DefinedTags": {
      "type": "object",
      "description": "Defined tags for the resource. Each key is predefined and scoped to a namespace. Format: {namespace: {key: value}}.",
      "additionalProperties": {
        "type": "object",
        "additionalProperties": {
          "type": "string"
        }
      }
    },
    "FreeformTags": {
      "type": "object",
      "description": "Free-form tags for the resource. Each tag is a simple key-value pair with no predefined name, type, or namespace.",
      "additionalProperties": {
        "type": "string"
      }
    },
    "Shape": {
      "type": "object",
      "description": "A compute shape determines the resources allocated to an instance. Shapes can be fixed (predetermined resources) or flexible (configurable OCPUs and memory).",
      "required": ["shape"],
      "properties": {
        "shape": {
          "type": "string",
          "description": "The name of the shape.",
          "examples": [
            "VM.Standard.E4.Flex",
            "VM.Standard3.Flex",
            "VM.Standard.A1.Flex",
            "BM.Standard3.64",
            "VM.GPU.A10.1"
          ]
        },
        "availabilityDomain": {
          "type": "string",
          "description": "The availability domain where the shape is available. Null if available across all ADs."
        },
        "ocpus": {
          "type": "number",
          "description": "The default number of OCPUs for this shape."
        },
        "memoryInGBs": {
          "type": "number",
          "description": "The default amount of memory for this shape, in GB."
        },
        "processorDescription": {
          "type": "string",
          "description": "A short description of the processor."
        },
        "networkingBandwidthInGbps": {
          "type": "number",
          "description": "The networking bandwidth for this shape, in Gbps."
        },
        "maxVnicAttachments": {
          "type": "integer",
          "description": "The maximum number of VNICs that can be attached."
        },
        "gpus": {
          "type": "integer",
          "description": "The number of GPUs for this shape."
        },
        "gpuDescription": {
          "type": "string",
          "description": "A short description of the GPU."
        },
        "localDisks": {
          "type": "integer",
          "description": "The number of local disks for this shape."
        },
        "localDisksTotalSizeInGBs": {
          "type": "number",
          "description": "The aggregate local disk size in GB."
        },
        "isFlexible": {
          "type": "boolean",
          "description": "Whether the shape supports flexible OCPU and memory configuration."
        },
        "isBilledForStoppedInstance": {
          "type": "boolean",
          "description": "Whether billing continues when the instance is stopped."
        }
      }
    },
    "Image": {
      "type": "object",
      "description": "A boot disk image for launching compute instances. Images can be Oracle-provided platform images, custom images created from instances, or Marketplace partner images.",
      "required": [
        "id",
        "compartmentId",
        "operatingSystem",
        "operatingSystemVersion",
        "lifecycleState",
        "timeCreated"
      ],
      "properties": {
        "id": {
          "type": "string",
          "description": "The OCID of the image.",
          "pattern": "^ocid1\\.image\\..+$"
        },
        "compartmentId": {
          "type": "string",
          "description": "The OCID of the compartment containing the image."
        },
        "displayName": {
          "type": "string",
          "description": "A user-friendly name for the image."
        },
        "operatingSystem": {
          "type": "string",
          "description": "The operating system of the image.",
          "examples": ["Oracle Linux", "CentOS", "Canonical Ubuntu", "Windows"]
        },
        "operatingSystemVersion": {
          "type": "string",
          "description": "The operating system version.",
          "examples": ["8", "9", "22.04", "Server 2019 Standard"]
        },
        "lifecycleState": {
          "type": "string",
          "description": "The lifecycle state of the image.",
          "enum": [
            "PROVISIONING",
            "IMPORTING",
            "AVAILABLE",
            "EXPORTING",
            "DISABLED",
            "DELETED"
          ]
        },
        "timeCreated": {
          "type": "string",
          "format": "date-time",
          "description": "The date and time the image was created."
        },
        "baseImageId": {
          "type": "string",
          "description": "The OCID of the image originally used to create this custom image."
        },
        "sizeInMBs": {
          "type": "integer",
          "description": "The boot volume size for instances launched from this image, in MBs."
        },
        "billableSizeInGBs": {
          "type": "integer",
          "description": "The billable size of the image in GBs."
        },
        "createImageAllowed": {
          "type": "boolean",
          "description": "Whether instances from this image can create new images."
        },
        "launchMode": {
          "type": "string",
          "description": "The launch mode of instances created from this image.",
          "enum": ["NATIVE", "EMULATED", "PARAVIRTUALIZED", "CUSTOM"]
        }
      }
    }
  }
}