| OPSAWG | H. Asai |
| Internet-Draft | Univ. of Tokyo |
| Intended status: Standards Track | M. MacFaden |
| Expires: May 14, 2015 | VMware Inc. |
| J. Schoenwaelder | |
| Jacobs University | |
| K. Shima | |
| IIJ Innovation Institute Inc. | |
| T. Tsou | |
| Huawei Technologies (USA) | |
| Y. Sekiyanotfirstpage | |
| Univ. of Tokyo | |
| C. Zhounotfirstpage | |
| Huawei Technologies | |
| H. Esakinotfirstpage | |
| Univ. of Tokyo | |
| November 10, 2014 |
Management Information Base for Virtual Machines Controlled by a Hypervisor
draft-ietf-opsawg-vmm-mib-02
This document defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, this specifies objects for managing virtual machines controlled by a hypervisor (a.k.a. virtual machine monitor).
This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet-Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress."
This Internet-Draft will expire on May 14, 2015.
Copyright (c) 2014 IETF Trust and the persons identified as the document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License.
This document defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, this specifies objects for managing virtual machines controlled by a hypervisor (a.k.a. virtual machine monitor). A hypervisor controls multiple virtual machines on a single physical machine by allocating resources to each virtual machine using virtualization technologies. Therefore, this MIB module contains information on virtual machines and their resources controlled by a hypervisor as well as hypervisor's hardware and software information.
The design of this MIB module has been derived from enterprise specific MIB modules, namely a MIB module for managing guests of the Xen hypervisor, a MIB module for managing virtual machines controlled by the VMware hypervisor, and a MIB module using the libvirt programming interface to access different hypervisors. However, this MIB module attempts to generalize the managed objects to support other implementations of hypervisors.
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 [RFC2119].
For a detailed overview of the documents that describe the current Internet-Standard Management Framework, please refer to section 7 of RFC 3410 [RFC3410]. Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. MIB objects are generally accessed through the Simple Network Management Protocol (SNMP). Objects in the MIB are defined using the mechanisms defined in the Structure of Management Information (SMI). This memo specifies a MIB module that is compliant to the SMIv2, which is described in STD 58, RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580 [RFC2580].
This document defines a portion of MIB for the management of virtual machines controlled by a hypervisor. This MIB module consists of the managed objects related to system and software information of a hypervisor, the list of virtual machines controlled by the hypervisor, and information of virtual resources allocated to virtual machines by the hypervisor. This document specifies four specific types of virtual resources that are common to many hypervisor implementations; processors (CPUs), memory, network interfaces (NICs), and storage devices. These managed objects are independent of the families of hypervisors or operating systems running on virtual machines.
+------------------------------------------------------------------+ | +-------------------------------------------------+ | | | Virtual machine | | | | | | | | +---------+ +---------+ +---------+ +---------+ | ....... | | | | Virtual | | Virtual | | Virtual | | Virtual | | | | +-| CPU |-| memory |-| storage |-| NIC |-+ | | +---------+ +---------+ +---------+ +---------+ | | Virtual resources | | ^ | | | Allocation using virtualization technologies | | | | | +-- Physical resources ._____. | | +--------+ .--------. / \ +--^--+ | +- - - - - - - | | - /________/| - *\_______/* - | | - -+ | Hypervisor | CPU | | Memory |/ | Storage | | NIC | | | +--------+ +--------+ \_______/ +-----+ | | +-----------------------+ | | || MIB objects || | | +-----------------------+ | +------------------------------------------------------------------+
A hypervisor allocates virtual resources such as virtual CPUs, virtual memory, virtual storage devices, and virtual network interfaces to virtual machines from physical resources.
Figure 1: An example of a virtualization environment
On the common implementations of hypervisors, a hypervisor allocates virtual resources from physical resources; virtual CPUs, virtual memory, virtual storage devices, and virtual network interfaces to virtual machines as shown in Figure 1. Since the virtual resources allocated to virtual machines are managed by the hypervisor, the MIB objects are managed at a hypervisor. In case that the objects are accessed through the SNMP, an SNMP agent is launched at the hypervisor to provide access to the objects.
The objects are managed from the viewpoint of the operators of hypervisors, but not the operators of virtual machines; i.e., the objects do not take into account the actual resource utilization on each virtual machine but the resource allocation from the physical resources. For example, vmNetworkIfIndex indicates the virtual interface associated with an interface of a virtual machine at the hypervisor, and consequently, the `in' and `out' directions denote `from a virtual machine to the hypervisor' and `from the hypervisor to a virtual machine', respectively. Moreover, vmStorageAllocatedSize denotes the size allocated by the hypervisor, but not the size actually used by the operating system on the virtual machine. This means that vmStorageDefinedSize and vmStorageAllocatedSize do not take different values when the vmStorageSourceType is `block' or `raw'.
The objectives of this document are the followings: 1) This document defines the MIB objects common to many hypervisors for the management of virtual machines controlled by a hypervisor. 2) This document clarifies the relationship between other MIB modules for managing host computers and network devices.
The MIB module is organized into a group of scalars and tables. The scalars below `vmHypervisor' provide basic information about the hypervisor. The `vmTable' lists the virtual machines (guests) that are known to the hypervisor. The `vmCpuTable' provides the mapping table of virtual CPUs to virtual machines, including CPU time used by each virtual CPU. The 'vmCpuAffinityTable' provides the affinity of each virtual CPU to a physical CPU. The `vmStorageTable' provides the list of virtual storage devices and their mapping to virtual machines. In case that an entry in the `vmStorageTable' has a corresponding parent physical storage device managed in `vmStorageTable' of HOST-RESOURCES-MIB [RFC2790], the entry contains a pointer `vmStorageParent' to the physical storage device. The `vmNetworkTable' provides the list of virtual network interfaces and their mapping to virtual machines. Each entry in the `vmNetworkTable' also provides a pointer `vmNetworkIfIndex' to the corresponding entry in the `ifTable' of IF-MIB [RFC2863]. In case that an entry in the `vmNetworkTable' has a corresponding parent physical network interface managed in the `ifTable' of IF-MIB, the entry contains a pointer `vmNetworkParent' to the physical network interface.
!: Notification
+-------------+ + - - - - - - +
| finite | | transient |
| vmOperState | | vmOperState |
+-------------+ + - - - - - - +
================================================================
+--------------+ + - - - - - - - + +-------------+
| suspended |<--| suspending | | paused |
| !vmSuspended | | !vmSuspending | | !vmPaused |
+--------------+ + - - - - - - - + +-------------+
| ^ ^
| | |
v | |
+ - - - - - - + +-------------+<----------+ + - - - - - - -+
| resuming |-->| running |<-------------->| migrating |
| !vmResuming | | !vmRunning | | !vmMigrating |
+ - - - - - - + +-------------+ + - - - - - - -+
| ^ ^
| | |
| +-------------------+ |
| | |
v v v
+ - - - - - - - - + +-------------+
| shuttingdown |--------->| shutdown |
| !vmShuttingdown | | !vmShutdown |
+ - - - - - - - - + +-------------+
^ |
| v !vmDeleted
+ - - - - - -+ +------------+ + - - - - - - + (Deleted from
| blocked | | crashed | | preparing | vmTable)
| !vmBlocked | | !vmCrashed | | |
+ - - - - - -+ +------------+ + - - - - - - +
The state transition of a virtual machine
Figure 2: State transition of a virtual machine
The `vmAdminState' and `vmOperState' textual conventions define an administrative state and an operational state model for virtual machines. Events causing transitions between major operational states will cause the generation of notifications. Per virtual machine (per-VM) notifications (vmRunning, vmShutdown, vmPaused, vmSuspended, vmCrashed, vmDeleted) are generated if vmPerVMNotificationsEnabled is true(1). Bulk notifications (vmBulkRunning, vmBulkShutdown, vmBulkPaused, vmBulkSuspended, vmBulkCrashed, vmBulkDeleted) are generated if vmBulkNotificationsEnabled is true(1). The transition of `vmOperState' by the write access to `vmAdminState' and the notifications generated by the operational state changes are summarized in Figure 2. Note that the notifications shown in this figure are per-VM notifications. In the case of Bulk notifications, the prefix `vm' is replaced with 'vmBulk'.
The bulk notification mechanism is designed to reduce the number of notifications that are trapped by an SNMP manager. This is because the number of virtual machines managed by a bunch of hypervisors in a datacenter possibly becomes several thousands or more, and consequently, many notifications could be trapped if these virtual machines frequently change their administrative state. The per-VM notifications carry more detailed information, but the scalability shall be a problem. An implementation shall support both, either of, or none of per-VM notifications and bulk notifications. The notification filtering mechanism described in section 6 of RFC 3413 [RFC3413] is used by the management applications to control the notifications.
The MIB module provides a few writable objects that can be used to make non-persistent changes, e.g., changing the memory allocation or the CPU allocation. It is not the goal of this MIB module to provide a configuration interface for virtual machines since other protocols and data modeling languages are more suitable for this task.
The OID tree structure of the MIB module is shown below.
--vmMIB (1.3.6.1.2.1.yyy)
+--vmNotifications(0)
| +--vmRunning(1) [vmName, vmUUID, vmOperState]
| +--vmShuttingdown(2) [vmName, vmUUID, vmOperState]
| +--vmShutdown(3) [vmName, vmUUID, vmOperState]
| +--vmPaused(4) [vmName, vmUUID, vmOperState]
| +--vmSuspending(5) [vmName, vmUUID, vmOperState]
| +--vmSuspended(6) [vmName, vmUUID, vmOperState]
| +--vmResuming(7) [vmName, vmUUID, vmOperState]
| +--vmMigrating(8) [vmName, vmUUID, vmOperState]
| +--vmCrashed(9) [vmName, vmUUID, vmOperState]
| +--vmBlocked(10) [vmName, vmUUID, vmOperState]
| +--vmDeleted(11) [vmName, vmUUID, vmOperState, vmPersistent]
| +--vmBulkRunning(12) [vmAffectedVMs]
| +--vmBulkShutdown(13) [vmAffectedVMs]
| +--vmBulkShuttingdown(14) [vmAffectedVMs]
| +--vmBulkPaused(15) [vmAffectedVMs]
| +--vmBulkSuspending(16) [vmAffectedVMs]
| +--vmBulkSuspended(17) [vmAffectedVMs]
| +--vmBulkResuming(18) [vmName, vmUUID, vmOperState]
| +--vmBulkMigrating(19) [vmAffectedVMs]
| +--vmBulkCrashed(20) [vmAffectedVMs]
| +--vmBulkBlocked(21) [vmAffectedVMs]
| +--vmBulkDeleted(22) [vmAffectedVMs]
+--vmObjects(1)
| +--vmHypervisor(1)
| | +-- r-n SnmpAdminString vmHvSoftware(1)
| | +-- r-n SnmpAdminString vmHvVersion(2)
| | +-- r-n OBJECT IDENTIFIER vmHvObjectID(3)
| | +-- r-n TimeTicks vmHvUpTime(4)
| +-- r-n Integer32 vmNumber(2)
| +-- r-n TimeTicks vmTableLastChange(3)
| +--vmTable(4)
| | +--vmEntry(1) [vmIndex]
| | +-- --- VirtualMachineIndex vmIndex(1)
| | +-- r-n SnmpAdminString vmName(2)
| | +-- r-n UUIDorZero vmUUID(3)
| | +-- r-n SnmpAdminString vmOSType(4)
| | +-- r-n VirtualMachineAdminState
| | | vmAdminState(5)
| | +-- r-n VirtualMachineOperState
| | | vmOperState(6)
| | +-- r-n VirtualMachineAutoStart
| | | vmAutoStart(7)
| | +-- r-n VirtualMachinePersistent
| | | vmPersistent(8)
| | +-- r-n Integer32 vmCurCpuNumber(9)
| | +-- r-n Integer32 vmMinCpuNumber(10)
| | +-- r-n Integer32 vmMaxCpuNumber(11)
| | +-- r-n Integer32 vmMemUnit(12)
| | +-- r-n Integer32 vmCurMem(13)
| | +-- r-n Integer32 vmMinMem(14)
| | +-- r-n Integer32 vmMaxMem(15)
| | +-- r-n TimeTicks vmUpTime(16)
| | +-- r-n Counter64 vmCpuTime(17)
| +--vmCpuTable(5)
| | +--vmCpuEntry(1) [vmIndex, vmCpuIndex]
| | +-- --- VirtualMachineCpuIndex
| | | vmCpuIndex(1)
| | +-- r-n Counter64 vmCpuCoreTime(2)
| +--vmCpuAffinityTable(6)
| | +--vmCpuAffinityEntry(1) [vmIndex,
| | | vmCpuIndex,
| | | vmCpuPhysIndex]
| | +-- --- Integer32 vmCpuPhysIndex(1)
| | +-- r-n Integer32 vmCpuAffinity(2)
| +--vmStorageTable(7)
| | +--vmStorageEntry(1) [vmStorageVmIndex, vmStorageIndex]
| | +-- --- VirtualMachineIndexOrZero
| | | vmStorageVmIndex(1)
| | +-- --- VirtualMachineStorageIndex
| | | vmStorageIndex(2)
| | +-- r-n Integer32 vmStorageParent(3)
| | +-- r-n VirtualMachineStorageSourceType
| | | vmStorageSourceType(4)
| | +-- r-n SnmpAdminString vmStorageSourceTypeString(5)
| | +-- r-n SnmpAdminString vmStorageResourceID(6)
| | +-- r-n VirtualMachineStorageAccess
| | | vmStorageAccess(7)
| | +-- r-n VirtualMachineStorageMediaType
| | | vmStorageMediaType(8)
| | +-- r-n SnmpAdminString vmStorageMediaTypeString(9)
| | +-- r-n Integer32 vmStorageSizeUnit(10)
| | +-- r-n Integer32 vmStorageDefinedSize(11)
| | +-- r-n Integer32 vmStorageAllocatedSize(12)
| | +-- r-n Counter64 vmStorageReadIOs(13)
| | +-- r-n Counter64 vmStorageWriteIOs(14)
| | +-- r-n Counter64 vmStorageReadOctets(15)
| | +-- r-n Counter64 vmStorageWriteOctets(16)
| | +-- r-n Counter64 vmStorageReadLatency(17)
| | +-- r-n Counter64 vmStorageWriteLatency(18)
| +--vmNetworkTable(8)
| | +--vmNetworkEntry(1) [vmIndex, vmNetworkIndex]
| | +-- --- VirtualMachineNetworkIndex
| | | vmNetworkIndex(1)
| | +-- r-n InterfaceIndexOrZero vmNetworkIfIndex(2)
| | +-- r-n InterfaceIndexOrZero vmNetworkParent(3)
| | +-- r-n SnmpAdminString vmNetworkModel(4)
| | +-- r-n PhysAddress vmNetworkPhysAddress(5)
| +-- rwn TruthValue vmPerVMNotificationsEnabled(9)
| +-- rwn TruthValue vmBulkNotificationsEnabled(10)
| +-- --n VirtualMachineList vmAffectedVMs(11)
+--vmConformance(2)
+--vmCompliances(1)
| +--vmFullCompliances(1)
| +--vmReadOnlyCompliances(2)
+--vmGroups(2)
+--vmHypervisorGroup(1)
+--vmVirtualMachineGroup(2)
+--vmCpuGroup(3)
+--vmCpuAffinityGroup(4)
+--vmStorageGroup(5)
+--vmNetworkGroup(6)
+--vmPerVMNotificationOptionalGroup(7)
+--vmBulkNotificationsVariablesGroup(8)
+--vmBulkNotificationOptionalGroup(9)
HOST-RESOURCES-MIB [RFC2790] defines the MIB objects for managing host systems. Hypervisors shall implement HOST-RESOURCES-MIB. On systems implementing HOST-RESOURCES-MIB, the objects of HOST-RESOURCES-MIB indicate resources of a hypervisor. Some objects of HOST-RESOURCES-MIB shall also be used to indicate physical resources through indexes. On systems implementing HOST-RESOURCES-MIB, the `vmCpuPhysIndex' points to the processor's `hrDeviceIndex' in the `hrProcessorTable'. The `vmStorageParent' also points to the storage device's `hrStorageIndex' in the `hrStorageTable'.
HOST-RESOURCES-MIB shall be implemented on systems running on virtual machines. It enables to manage the objects related to the resources of virtual machines from the viewpoint of virtual machine operators. However, from the viewpoint of hypervisor operators, it cannot obtain the list of virtual machines controlled by a hypervisor and the relationship between physical and virtual resources. This document defines the objects of these information.
IF-MIB [RFC2863] defines the MIB objects for managing network interfaces. Both physical and virtual network interfaces are required to be contained in the `ifTable' of IF-MIB. The virtual network interfaces in the `ifTable' of IF-MIB are pointed from the `vmNetworkTable' defined in this document through a pointer `vmNetworkIfIndex'. In case that an entry in the `vmNetworkTable' has a corresponding parent physical network interface managed in the `ifTable' of IF-MIB, the entry contains a pointer `vmNetworkParent' to the physical network interface.
The objects related to virtual switches are not also included in the MIB module defined in this document though virtual switches shall be placed on a hypervisor. This is because the virtual network interfaces are the lowest abstraction of network resources allocated to a virtual machine. Instead of including the objects related to virtual switches, for example, IEEE8021-BRIDGE-MIB [IEEE8021-BRIDGE-MIB] and IEEE8021-Q-BRIDGE-MIB [IEEE8021-Q-BRIDGE-MIB] could be used.
The other objects related to virtual machines such as management IP addresses of a virtual machine are not included in this MIB module because this MIB module defines the objects common to general hypervisors but they are specific to some hypervisors. They may be included in the entLogicalTable of ENTITY-MIB [RFC6933].
VM-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE, TimeTicks,
Counter64, Integer32, mib-2
FROM SNMPv2-SMI
OBJECT-GROUP, MODULE-COMPLIANCE, NOTIFICATION-GROUP
FROM SNMPv2-CONF
TEXTUAL-CONVENTION, PhysAddress, TruthValue
FROM SNMPv2-TC
SnmpAdminString
FROM SNMP-FRAMEWORK-MIB
UUIDorZero
FROM UUID-TC-MIB
InterfaceIndexOrZero
FROM IF-MIB;
vmMIB MODULE-IDENTITY
LAST-UPDATED "201410260000Z" -- 26 October 2014
ORGANIZATION "IETF Operations and Management Area Working Group"
CONTACT-INFO
"
WG E-mail: opsawg@ietf.org
Mailing list subscription info:
https://www.ietf.org/mailman/listinfo/opsawg
Hirochika Asai
The University of Tokyo
7-3-1 Hongo
Bunkyo-ku, Tokyo 113-8656
JP
Phone: +81 3 5841 6748
Email: panda@hongo.wide.ad.jp
Michael MacFaden
VMware Inc.
Email: mrm@vmware.com
Juergen Schoenwaelder
Jacobs University
Campus Ring 1
Bremen 28759
Germany
Email: j.schoenwaelder@jacobs-university.de
Keiichi Shima
IIJ Innovation Institute Inc.
3-13 Kanda-Nishikicho
Chiyoda-ku, Tokyo 101-0054
JP
Email: keiichi@iijlab.net
Tina Tsou
Huawei Technologies (USA)
2330 Central Expressway
Santa Clara CA 95050
USA
Email: tina.tsou.zouting@huawei.com
"
DESCRIPTION
"This MIB module is for use in managing a hypervisor and
virtual machines controlled by the hypervisor. The OID
`yyy' is temporary one, and it must be assigned by IANA
when this becomes an official document.
Copyright (c) 2014 IETF Trust and the persons identified
as authors of the code. All rights reserved.
Redistribution and use in source and binary forms, with
or without modification, is permitted pursuant to, and
subject to the license terms contained in, the
Simplified BSD License set forth in Section 4.c of the
IETF Trust's Legal Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info)."
REVISION "201410260000Z" -- 26 October 2014
DESCRIPTION
"The original version of this MIB, published as
RFCXXXX."
::= { mib-2 yyy }
vmNotifications OBJECT IDENTIFIER ::= { vmMIB 0 }
vmObjects OBJECT IDENTIFIER ::= { vmMIB 1 }
vmConformance OBJECT IDENTIFIER ::= { vmMIB 2 }
-- Textual conversion definitions
--
VirtualMachineIndex ::= TEXTUAL-CONVENTION
DISPLAY-HINT "d"
STATUS current
DESCRIPTION
"A unique value, greater than zero, identifying a
virtual machine. The value for each virtual machine
must remain constant at least from one re-initialization
of the hypervisor to the next re-initialization."
SYNTAX Integer32 (1..2147483647)
VirtualMachineIndexOrZero ::= TEXTUAL-CONVENTION
DISPLAY-HINT "d"
STATUS current
DESCRIPTION
"This textual convention is an extension of the
VirtualMachineIndex convention. This extension permits
the additional value of zero. The meaning of the value
zero is object-specific and must therefore be defined as
part of the description of any object which uses this
syntax. Examples of the usage of zero might include
situations where a virtual machine is unknown, or when
none or all virtual machines need to be referenced."
SYNTAX Integer32 (0..2147483647)
VirtualMachineAdminState ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"The administrative state of a virtual machine:
running(1) The administrative state of the virtual
machine indicating the virtual machine
is currently online or should be brought
online.
suspended(2) The administrative state of the virtual
machine where its memory and CPU execution
state has been saved to persistent store
and will be restored at next running(1).
paused(3) The administrative state indicating the
virtual machine is resident in memory but
is no longer scheduled to execute by the
hypervisor.
shutdown(4) The administrative state of the virtual
machine indicating the virtual machine
is currently offline or should be taken
shutting down.
destroy(5) The administrative state of the virtual
machine indicating the virtual machine
should be forcibly shutdown. After the
destroy operation, the administrative
state should be automatically changed to
shutdown(4)."
SYNTAX INTEGER {
running(1),
suspended(2),
paused(3),
shutdown(4),
destroy(5)
}
VirtualMachineOperState ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"The operational state of a virtual machine:
unknown(1) The operational state of the virtual
machine is unknown, e.g., because the
implementation failed to obtain the state
from the hypervisor.
other(2) The operational state of the virtual
machine indicating that an operational
state is obtained from the hypervisor but
it is not a state defined in this MIB
module.
preparing(3) The operational state of the virtual
machine indicating the virtual machine is
currently in the process of preparation,
e.g., allocating and initializing virtual
storage after creating (defining) virtual
machine.
running(4) The operational state of the virtual
machine indicating the virtual machine is
currently executed but it is not in the
process of preparing(3), suspending(6),
resuming(8), migrating(10), and
shuttingdown(11).
blocked(5) The operational state of the virtual
machine indicating the execution of the
virtual machine is currently blocked,
e.g., waiting for some action of the
hypervisor to finish. This is a
transient state from/to other states.
suspending(6) The operational state of the virtual
machine indicating the virtual machine is
currently in the process of suspending
to save its memory and CPU execution
state to persistent store. This is a
transient state from running(4) to
suspended(7).
suspended(7) The operational state of the virtual
machine indicating the virtual machine is
currently suspended, which means the
memory and CPU execution state of the
virtual machine are saved to persistent
store. During this state, the virtual
machine is not scheduled to execute by
the hypervisor.
resuming(8) The operational state of the virtual
machine indicating the virtual machine is
currently in the process of resuming
to restore its memory and CPU execution
state from persistent store. This is a
transient state from suspended(7) to
running(4).
paused(9) The operational state of the virtual
machine indicating the virtual machine is
resident in memory but no longer
scheduled to execute by the hypervisor.
migrating(10) The operational state of the virtual
machine indicating the virtual machine is
currently in the process of migration
from/to another hypervisor.
shuttingdown(11)
The operational state of the virtual
machine indicating the virtual machine is
currently in the process of shutting
down. This is a transient state from
running(4) to shutdown(12).
shutdown(12) The operational state of the virtual
machine indicating the virtual machine is
down, and CPU execution is no longer
scheduled by the hypervisor and its
memory is not resident in the hypervisor.
crashed(13) The operational state of the virtual
machine indicating the virtual machine
has crashed."
SYNTAX INTEGER {
unknown(1),
other(2),
preparing(3),
running(4),
blocked(5),
suspending(6),
suspended(7),
resuming(8),
paused(9),
migrating(10),
shuttingdown(11),
shutdown(12),
crashed(13)
}
VirtualMachineAutoStart ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"The autostart configuration of a virtual machine:
unknown(1) The autostart configuration is unknown,
e.g., because the implementation failed
to obtain the autostart configuration
from the hypervisor.
enabled(2) The autostart configuration of the
virtual machine is enabled. The virtual
machine should be automatically brought
online at the next re-initialization of
the hypervisor.
disabled(3) The autostart configuration of the
virtual machine is disabled. The virtual
machine should not be automatically
brought online at the next
re-initialization of the hypervisor."
SYNTAX INTEGER {
unknown(1),
enabled(2),
disabled(3)
}
VirtualMachinePersistent ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"This value indicates whether a virtual machine has a
persistent configuration which means the virtual machine
will still exist after shutting down:
unknown(1) The persistent configuration is unknown,
e.g., because the implementation failed
to obtain the persistent configuration
from the hypervisor. (read-only)
persistent(2) The virtual machine is persistent, i.e.,
the virtual machine will exist after its
shutting down.
transient(3) The virtual machine is transient, i.e.,
the virtual machine will not exist after
its shutting down."
SYNTAX INTEGER {
unknown(1),
persistent(2),
transient(3)
}
VirtualMachineCpuIndex ::= TEXTUAL-CONVENTION
DISPLAY-HINT "d"
STATUS current
DESCRIPTION
"A unique value for each virtual machine, greater than
zero, identifying a virtual CPU assigned to a virtual
machine. The value for each virtual CPU must remain
constant at least from one re-initialization of the
hypervisor to the next re-initialization."
SYNTAX Integer32 (1..2147483647)
VirtualMachineStorageIndex ::= TEXTUAL-CONVENTION
DISPLAY-HINT "d"
STATUS current
DESCRIPTION
"A unique value for each virtual machine, greater than
zero, identifying a virtual storage device allocated to
a virtual machine. The value for each virtual storage
device must remain constant at least from one
re-initialization of the hypervisor to the next
re-initialization."
SYNTAX Integer32 (1..2147483647)
VirtualMachineStorageSourceType ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"The source type of a virtual storage device:
unknown(1) The source type is unknown, e.g., because
the implementation failed to obtain the
media type from the hypervisor.
other(2) The source type is other than those
defined in this conversion.
block(3) The source type is a block device.
raw(4) The source type is a raw-formatted file.
sparse(5) The source type is a sparse file.
network(6) The source type is a network device."
SYNTAX INTEGER {
unknown(1),
other(2),
block(3),
raw(4),
sparse(5),
network(6)
}
VirtualMachineStorageAccess ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"The access permission of a virtual storage:
readwrite(1) The virtual storage is a read-write
device.
readonly(2) The virtual storage is a read-only
device."
SYNTAX INTEGER {
readwrite(1),
readonly(2)
}
VirtualMachineStorageMediaType ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"The media type of a virtual storage device:
unknown(1) The media type is unknown, e.g., because
the implementation failed to obtain the
media type from the hypervisor.
other(2) The media type is other than those
defined in this conversion.
hardDisk(3) The media type is hard disk.
opticalDisk(4) The media type is optical disk."
SYNTAX INTEGER {
other(1),
unknown(2),
hardDisk(3),
opticalDisk(4)
}
VirtualMachineNetworkIndex ::= TEXTUAL-CONVENTION
DISPLAY-HINT "d"
STATUS current
DESCRIPTION
"A unique value for each virtual machine, greater than
zero, identifying a virtual network interface allocated
to the virtual machine. The value for each virtual
network interface must remain constant at least from one
re-initialization of the hypervisor to the next
re-initialization."
SYNTAX Integer32 (1..2147483647)
VirtualMachineList ::= TEXTUAL-CONVENTION
DISPLAY-HINT "1x"
STATUS current
DESCRIPTION
"Each octet within this value specifies a set of eight
virtual machine vmIndex, with the first octet specifying
virtual machine 1 through 8, the second octet specifying
virtual machine 9 through 16, etc. Within each octet,
the most significant bit represents the lowest numbered
vmIndex, and the least significant bit represents the
highest numbered vmIndex. Thus, each virtual machine of
the host is represented by a single bit within the value
of this object. If that bit has a value of '1', then
that virtual machine is included in the set of virtual
machines; the virtual machine is not included if its bit
has a value of '0'."
SYNTAX OCTET STRING
-- The hypervisor group
--
-- A collection of objects common to all hypervisors.
--
vmHypervisor OBJECT IDENTIFIER ::= { vmObjects 1 }
vmHvSoftware OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE (0..255))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A textual description of the hypervisor software. This
value should not include its version, and it should be
included in `vmHvVersion'."
::= { vmHypervisor 1 }
vmHvVersion OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE (0..255))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A textual description of the version of the hypervisor
software."
::= { vmHypervisor 2 }
vmHvObjectID OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The vendor's authoritative identification of the
hypervisor software contained in the entity. This value
is allocated within the SMI enterprises
subtree (1.3.6.1.4.1). Note that this is different from
sysObjectID in the SNMPv2-MIB [RFC3418] because
sysObjectID is not the identification of the hypervisor
software but the device, firmware, or management
operating system."
::= { vmHypervisor 3 }
vmHvUpTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The time (in centi-seconds) since the hypervisor was
last re-initialized. Note that this is different from
sysUpTime in the SNMPv2-MIB [RFC3418] and hrSystemUptime
in the HOST-RESOURCES-MIB [RFC2790] because sysUpTime is
the uptime of the network management portion of the
system, and hrSystemUptime is the uptime of the
management operating system but not the hypervisor
software."
::= { vmHypervisor 4 }
-- The virtual machine information
--
-- A collection of objects common to all virtual machines.
--
vmNumber OBJECT-TYPE
SYNTAX Integer32 (0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of virtual machines (regardless of their
current state) present on this hypervisor."
::= { vmObjects 2 }
vmTableLastChange OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of vmHvUpTime at the time of the last creation
or deletion of an entry in the vmTable."
::= { vmObjects 3 }
vmTable OBJECT-TYPE
SYNTAX SEQUENCE OF VmEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of virtual machine entries. The number of
entries is given by the value of vmNumber."
::= { vmObjects 4 }
vmEntry OBJECT-TYPE
SYNTAX VmEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry containing management information applicable
to a particular virtual machine."
INDEX { vmIndex }
::= { vmTable 1 }
VmEntry ::=
SEQUENCE {
vmIndex VirtualMachineIndex,
vmName SnmpAdminString,
vmUUID UUIDorZero,
vmOSType SnmpAdminString,
vmAdminState VirtualMachineAdminState,
vmOperState VirtualMachineOperState,
vmAutoStart VirtualMachineAutoStart,
vmPersistent VirtualMachinePersistent,
vmCurCpuNumber Integer32,
vmMinCpuNumber Integer32,
vmMaxCpuNumber Integer32,
vmMemUnit Integer32,
vmCurMem Integer32,
vmMinMem Integer32,
vmMaxMem Integer32,
vmUpTime TimeTicks,
vmCpuTime Counter64
}
vmIndex OBJECT-TYPE
SYNTAX VirtualMachineIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A unique value, greater than zero, identifying the
virtual machine. The value assigned to a given virtual
machine may not persist across re-initialization of the
hypervisor. A command generator must use the vmUUID to
identify a given virtual machine of interest."
::= { vmEntry 1 }
vmName OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE (0..255))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A textual name of the virtual machine."
::= { vmEntry 2 }
vmUUID OBJECT-TYPE
SYNTAX UUIDorZero
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The virtual machine's 128-bit UUID or the zero-length
string when a UUID is not available. The UUID if set
must uniquely identify a virtual machine from all other
virtual machines in an administrative region. A
zero-length octet string is returned if no UUID
information is known."
::= { vmEntry 3 }
vmOSType OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE (0..255))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A textual description containing operating system
information installed on the virtual machine. This
value corresponds to the operating system the hypervisor
assumes to be running when the virtual machine is
started. This may differ from the actual operating
system in case the virtual machine boots into a
different operating system."
::= { vmEntry 4 }
vmAdminState OBJECT-TYPE
SYNTAX VirtualMachineAdminState
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The administrative power state of the virtual machine."
::= { vmEntry 5 }
vmOperState OBJECT-TYPE
SYNTAX VirtualMachineOperState
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The operational state of the virtual machine."
::= { vmEntry 6 }
vmAutoStart OBJECT-TYPE
SYNTAX VirtualMachineAutoStart
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The autostart configuration of the virtual machine. If
this value is enable(2), the virtual machine
automatically starts at the next initialization of the
hypervisor."
::= { vmEntry 7 }
vmPersistent OBJECT-TYPE
SYNTAX VirtualMachinePersistent
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This value indicates whether the virtual machine has a
persistent configuration which means the virtual machine
will still exist after its shutdown."
::= { vmEntry 8 }
vmCurCpuNumber OBJECT-TYPE
SYNTAX Integer32 (0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of virtual CPUs currently assigned to the
virtual machine."
::= { vmEntry 9 }
vmMinCpuNumber OBJECT-TYPE
SYNTAX Integer32 (-1|0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The minimum number of virtual CPUs that are assigned to
the virtual machine when it is in a power-on state. The
value -1 indicates that there is no hard boundary for
the minimum number of virtual CPUs."
::= { vmEntry 10 }
vmMaxCpuNumber OBJECT-TYPE
SYNTAX Integer32 (-1|0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The maximum number of virtual CPUs that are assigned to
the virtual machine when it is in a power-on state. The
value -1 indicates that there is no limit."
::= { vmEntry 11 }
vmMemUnit OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The multiplication unit for vmCurMem, vmMinMem, and
vmMaxMem. For example, when this value is 1024, the
memory size unit for vmCurMem, vmMinMem, and vmMaxMem is
KiB."
::= { vmEntry 12 }
vmCurMem OBJECT-TYPE
SYNTAX Integer32 (0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The current memory size currently allocated to the
virtual memory module in the unit designated by
vmMemUnit."
::= { vmEntry 13 }
vmMinMem OBJECT-TYPE
SYNTAX Integer32 (-1|0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The minimum memory size defined to the virtual machine
in the unit designated by vmMemUnit. The value -1
indicates that there is no hard boundary for the minimum
memory size."
::= { vmEntry 14 }
vmMaxMem OBJECT-TYPE
SYNTAX Integer32 (-1|0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The maximum memory size defined to the virtual machine
in the unit designated by vmMemUnit. The value -1
indicates that there is no limit."
::= { vmEntry 15 }
vmUpTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The time (in centi-seconds) since the administrative
state of the virtual machine was last changed from
shutdown(4) to running(1)."
::= { vmEntry 16 }
vmCpuTime OBJECT-TYPE
SYNTAX Counter64
UNITS "microsecond"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total CPU time used in microsecond. If the number
of virtual CPUs is larger than 1, vmCpuTime may exceed
real time.
Discontinuities in the value of this counter can occur
at re-initialization of the hypervisor, and
administrative state (vmAdminState) changes of the
virtual machine."
::= { vmEntry 17 }
-- The virtual CPU on each virtual machines
vmCpuTable OBJECT-TYPE
SYNTAX SEQUENCE OF VmCpuEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The table of virtual CPUs provided by the hypervisor."
::= { vmObjects 5 }
vmCpuEntry OBJECT-TYPE
SYNTAX VmCpuEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry for one virtual processor assigned to a
virtual machine."
INDEX { vmIndex, vmCpuIndex }
::= { vmCpuTable 1 }
VmCpuEntry ::=
SEQUENCE {
vmCpuIndex VirtualMachineCpuIndex,
vmCpuCoreTime Counter64
}
vmCpuIndex OBJECT-TYPE
SYNTAX VirtualMachineCpuIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A unique value identifying a virtual CPU assigned to
the virtual machine."
::= { vmCpuEntry 1 }
vmCpuCoreTime OBJECT-TYPE
SYNTAX Counter64
UNITS "microsecond"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total CPU time used by this virtual CPU in
microsecond.
Discontinuities in the value of this counter can occur
at re-initialization of the hypervisor, and
administrative state (vmAdminState) changes of the
virtual machine."
::= { vmCpuEntry 2 }
-- The virtual CPU affinity on each virtual machines
vmCpuAffinityTable OBJECT-TYPE
SYNTAX SEQUENCE OF VmCpuAffinityEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of CPU affinity entries of a virtual CPU."
::= { vmObjects 6 }
vmCpuAffinityEntry OBJECT-TYPE
SYNTAX VmCpuAffinityEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry containing CPU affinity associated with a
particular virtual machine."
INDEX { vmIndex, vmCpuIndex, vmCpuPhysIndex }
::= { vmCpuAffinityTable 1 }
VmCpuAffinityEntry ::=
SEQUENCE {
vmCpuPhysIndex Integer32,
vmCpuAffinity Integer32
}
vmCpuPhysIndex OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A value identifying a physical CPU on the hypervisor.
On systems implementing the HOST-RESOURCES-MIB, the
value must be the same value that is used as the index
in the hrProcessorTable (hrDeviceIndex)."
::= { vmCpuAffinityEntry 2 }
vmCpuAffinity OBJECT-TYPE
SYNTAX INTEGER {
unknown(0), -- unknown
enable(1), -- enabled
disable(2) -- disabled
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The CPU affinity of this virtual CPU to the physical
CPU represented by `vmCpuPhysIndex'."
::= { vmCpuAffinityEntry 3 }
-- The virtual storage devices on each virtual machine. This
-- document defines some overlapped objects with hrStorage in
-- HOST-RESOURCES-MIB [RFC2790], because virtual resources shall be
-- allocated from the hypervisor's resources, which is the `host
-- resources'
vmStorageTable OBJECT-TYPE
SYNTAX SEQUENCE OF VmStorageEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The conceptual table of virtual storage devices
attached to the virtual machine."
::= { vmObjects 7 }
vmStorageEntry OBJECT-TYPE
SYNTAX VmStorageEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry for one virtual storage device attached to the
virtual machine."
INDEX { vmStorageVmIndex, vmStorageIndex }
::= { vmStorageTable 1 }
VmStorageEntry ::=
SEQUENCE {
vmStorageVmIndex VirtualMachineIndexOrZero,
vmStorageIndex VirtualMachineStorageIndex,
vmStorageParent Integer32,
vmStorageSourceType VirtualMachineStorageSourceType,
vmStorageSourceTypeString
SnmpAdminString,
vmStorageResourceID SnmpAdminString,
vmStorageAccess VirtualMachineStorageAccess,
vmStorageMediaType VirtualMachineStorageMediaType,
vmStorageMediaTypeString
SnmpAdminString,
vmStorageSizeUnit Integer32,
vmStorageDefinedSize Integer32,
vmStorageAllocatedSize Integer32,
vmStorageReadIOs Counter64,
vmStorageWriteIOs Counter64,
vmStorageReadOctets Counter64,
vmStorageWriteOctets Counter64,
vmStorageReadLatency Counter64,
vmStorageWriteLatency Counter64
}
vmStorageVmIndex OBJECT-TYPE
SYNTAX VirtualMachineIndexOrZero
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This value identifies the virtual machine (guest) this
storage device has been allocated to. The value zero
indicates that the storage device is currently not
allocated to any virtual machines."
::= { vmStorageEntry 1 }
vmStorageIndex OBJECT-TYPE
SYNTAX VirtualMachineStorageIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A unique value identifying a virtual storage device
allocated to the virtual machine."
::= { vmStorageEntry 2 }
vmStorageParent OBJECT-TYPE
SYNTAX Integer32 (0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of hrStorageIndex which is the parent (i.e.,
physical) device of this virtual device on systems
implementing the HOST-RESOURCES-MIB. The value zero
denotes this virtual device is not any child represented
in the hrStorageTable."
::= { vmStorageEntry 3 }
vmStorageSourceType OBJECT-TYPE
SYNTAX VirtualMachineStorageSourceType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The source type of the virtual storage device."
::= { vmStorageEntry 4 }
vmStorageSourceTypeString OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE (0..255))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A (detailed) textual string of the source type of the
virtual storage device. For example, this represents
the specific format name of the sparse file."
::= { vmStorageEntry 5 }
vmStorageResourceID OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE (0..255))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A textual string that represents the resource
identifier of the virtual storage. For example, this
contains the path to the disk image file that
corresponds to the virtual storage."
::= { vmStorageEntry 6 }
vmStorageAccess OBJECT-TYPE
SYNTAX VirtualMachineStorageAccess
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The access permission of the virtual storage device."
::= { vmStorageEntry 7 }
vmStorageMediaType OBJECT-TYPE
SYNTAX VirtualMachineStorageMediaType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The media type of the virtual storage device."
::= { vmStorageEntry 8 }
vmStorageMediaTypeString OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE (0..255))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A (detailed) textual string of the virtual storage
media. For example, this represents the specific driver
name of the emulated media such as `IDE' and `SCSI'."
::= { vmStorageEntry 9 }
vmStorageSizeUnit OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The multiplication unit for vmStorageDefinedSize and
vmStorageAllocatedSize. For example, when this value is
1048576, the storage size unit for vmStorageDefinedSize
and vmStorageAllocatedSize is MiB."
::= { vmStorageEntry 10 }
vmStorageDefinedSize OBJECT-TYPE
SYNTAX Integer32 (-1|0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The defined virtual storage size defined in the unit
designated by vmStorageSizeUnit. If this information is
not available, this value shall be -1."
::= { vmStorageEntry 11 }
vmStorageAllocatedSize OBJECT-TYPE
SYNTAX Integer32 (-1|0..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The storage size allocated to the virtual storage from
a physical storage in the unit designated by
vmStorageSizeUnit. When the virtual storage is block
device or raw file, this value and vmStorageDefinedSize
are supposed to equal. This value MUST NOT be different
from vmStorageDefinedSize when vmStorageSourceType is
`block' or `raw'. If this information is not available,
this value shall be -1."
::= { vmStorageEntry 12 }
vmStorageReadIOs OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of read I/O requests.
Discontinuities in the value of this counter can occur
at re-initialization of the hypervisor, and
administrative state (vmAdminState) changes of the
virtual machine."
::= { vmStorageEntry 13 }
vmStorageWriteIOs OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of write I/O requests.
Discontinuities in the value of this counter can occur
at re-initialization of the hypervisor, and
administrative state (vmAdminState) changes of the
virtual machine."
::= { vmStorageEntry 14 }
vmStorageReadOctets OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of bytes read from this device.
Discontinuities in the value of this counter can occur
at re-initialization of the hypervisor, and
administrative state (vmAdminState) changes of the
virtual machine."
::= { vmStorageEntry 15 }
vmStorageWriteOctets OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of bytes written to this device.
Discontinuities in the value of this counter can occur
at re-initialization of the hypervisor, and
administrative state (vmAdminState) changes of the
virtual machine."
::= { vmStorageEntry 16 }
vmStorageReadLatency OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of microseconds read requests have
been queued for this device.
This would typically be implemented by storing the high
precision system time stamp of when the request is
received from the virtual machine with the request, the
difference between this initial timestamp and the time
at which the requested operation has completed should be
converted to microseconds and accumulated.
Discontinuities in the value of this counter can occur at
re-initialization of the hypervisor, and administrative
state (vmAdminState) changes of the virtual machine."
::= { vmStorageEntry 17 }
vmStorageWriteLatency OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of microseconds write requests have
been queued for this device.
This would typically be implemented by storing the high
precision system time stamp of when the request is
received from the virtual machine with the request, the
difference between this initial timestamp and the time
at which the requested operation has completed should be
converted to microseconds and accumulated.
Discontinuities in the value of this counter can occur
at re-initialization of the hypervisor, and
administrative state (vmAdminState) changes of the
virtual machine."
::= { vmStorageEntry 18 }
-- The virtual network interfaces on each virtual machine.
vmNetworkTable OBJECT-TYPE
SYNTAX SEQUENCE OF VmNetworkEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The conceptual table of virtual network interfaces
attached to the virtual machine."
::= { vmObjects 8 }
vmNetworkEntry OBJECT-TYPE
SYNTAX VmNetworkEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry for one virtual network interfaces attached to
the virtual machine."
INDEX { vmIndex, vmNetworkIndex }
::= { vmNetworkTable 1 }
VmNetworkEntry ::=
SEQUENCE {
vmNetworkIndex VirtualMachineNetworkIndex,
vmNetworkIfIndex InterfaceIndexOrZero,
vmNetworkParent InterfaceIndexOrZero,
vmNetworkModel SnmpAdminString,
vmNetworkPhysAddress PhysAddress
}
vmNetworkIndex OBJECT-TYPE
SYNTAX VirtualMachineNetworkIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A unique value identifying a virtual network interface
allocated to the virtual machine."
::= { vmNetworkEntry 1 }
vmNetworkIfIndex OBJECT-TYPE
SYNTAX InterfaceIndexOrZero
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of ifIndex which corresponds to this virtual
network interface. If this device is not represented in
the ifTable, then this value shall be zero."
::= { vmNetworkEntry 2 }
vmNetworkParent OBJECT-TYPE
SYNTAX InterfaceIndexOrZero
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of ifIndex which corresponds to the parent
(i.e., physical) device of this virtual device on. The
value zero denotes this virtual device is not any child
represented in the ifTable."
::= { vmNetworkEntry 3 }
vmNetworkModel OBJECT-TYPE
SYNTAX SnmpAdminString (SIZE (0..255))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A textual string containing the (emulated) model of
virtual network interface. For example, this value is
`virtio' when the emulation driver model is virtio."
::= { vmNetworkEntry 4 }
vmNetworkPhysAddress OBJECT-TYPE
SYNTAX PhysAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The MAC address of the virtual network interface."
::= { vmNetworkEntry 5 }
-- Notification definitions:
vmPerVMNotificationsEnabled OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Indicates if notification generator will send
notifications per virtual machine. Changes to this
object MUST NOT persist across re-initialization of
the management system, e.g., SNMP agent."
::= { vmObjects 9 }
vmBulkNotificationsEnabled OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Indicates if notification generator will send
notifications per set of virtual machines. Changes to
this object MUST NOT persist across re-initialization of
the management system, e.g., SNMP agent."
::= { vmObjects 10 }
vmAffectedVMs OBJECT-TYPE
SYNTAX VirtualMachineList
MAX-ACCESS accessible-for-notify
STATUS current
DESCRIPTION
"A complete list of virtual machines whose state has
changed. This object is the only object sent with bulk
notifications."
::= { vmObjects 11 }
vmRunning NOTIFICATION-TYPE
OBJECTS {
vmName,
vmUUID,
vmOperState
}
STATUS current
DESCRIPTION
"This notification is generated when the operational
state of a virtual machine has been changed to
running(4) from some other state. The other state is
indicated by the included value of vmOperState."
::= { vmNotifications 1 }
vmShutdown NOTIFICATION-TYPE
OBJECTS {
vmName,
vmUUID,
vmOperState
}
STATUS current
DESCRIPTION
"This notification is generated when the operational
state of a virtual machine has been changed to
shutdown(12) from some other state. The other state is
indicated by the included value of vmOperState."
::= { vmNotifications 2 }
vmShuttingdown NOTIFICATION-TYPE
OBJECTS {
vmName,
vmUUID,
vmOperState
}
STATUS current
DESCRIPTION
"This notification is generated when the operational
state of a virtual machine has been changed to
shuttingdown(11) from some other state. The other state
is indicated by the included value of vmOperState."
::= { vmNotifications 3 }
vmPaused NOTIFICATION-TYPE
OBJECTS {
vmName,
vmUUID,
vmOperState
}
STATUS current
DESCRIPTION
"This notification is generated when the operational
state of a virtual machine has been changed to
paused(9) from some other state. The other state is
indicated by the included value of vmOperState."
::= { vmNotifications 4 }
vmSuspending NOTIFICATION-TYPE
OBJECTS {
vmName,
vmUUID,
vmOperState
}
STATUS current
DESCRIPTION
"This notification is generated when the operational
state of a virtual machine has been changed to
suspending(6) from some other state. The other state is
indicated by the included value of vmOperState."
::= { vmNotifications 5 }
vmSuspended NOTIFICATION-TYPE
OBJECTS {
vmName,
vmUUID,
vmOperState
}
STATUS current
DESCRIPTION
"This notification is generated when the operational
state of a virtual machine has been changed to
suspended(7) from some other state. The other state is
indicated by the included value of vmOperState."
::= { vmNotifications 6 }
vmResuming NOTIFICATION-TYPE
OBJECTS {
vmName,
vmUUID,
vmOperState
}
STATUS current
DESCRIPTION
"This notification is generated when the operational
state of a virtual machine has been changed to
resuming(8) from some other state. The other state is
indicated by the included value of vmOperState."
::= { vmNotifications 7 }
vmMigrating NOTIFICATION-TYPE
OBJECTS {
vmName,
vmUUID,
vmOperState
}
STATUS current
DESCRIPTION
"This notification is generated when the operational
state of a virtual machine has been changed to
migrating(10) from some other state. The other state is
indicated by the included value of vmOperState."
::= { vmNotifications 8 }
vmCrashed NOTIFICATION-TYPE
OBJECTS {
vmName,
vmUUID,
vmOperState
}
STATUS current
DESCRIPTION
"This notification is generated when a virtual machine
has been crashed. The previos state of the virtual
machine is indicated by the included value of
vmOperState."
::= { vmNotifications 9 }
vmBlocked NOTIFICATION-TYPE
OBJECTS {
vmName,
vmUUID,
vmOperState
}
STATUS current
DESCRIPTION
"This notification is generated when the operational
state of a virtual machine has been changed to
blocked(5). The previos state of the virtual machine is
indicated by the included value of vmOperState."
::= { vmNotifications 10 }
vmDeleted NOTIFICATION-TYPE
OBJECTS {
vmName,
vmUUID,
vmOperState,
vmPersistent
}
STATUS current
DESCRIPTION
"This notification is generated when a virtual machine
has been deleted. The prior state of the virtual
machine is indicated by the included value of
vmOperState."
::= { vmNotifications 11 }
vmBulkRunning NOTIFICATION-TYPE
OBJECTS {
vmAffectedVMs
}
STATUS current
DESCRIPTION
"This notification is generated when the operational
state of one or more virtual machine has been changed to
running(4) from a all prior states except for
running(4). Management stations are encouraged to
subsequently poll the subset of virtual machines of
interest for vmOperState."
::= { vmNotifications 12 }
vmBulkShuttingdown NOTIFICATION-TYPE
OBJECTS {
vmAffectedVMs
}
STATUS current
DESCRIPTION
"This notification is generated when the operational
state of one or more virtual machine has been changed to
shuttingdown(11) from a state other than
shuttingdown(11). Management stations are encouraged to
subsequently poll the subset of virtual machines of
interest for vmOperState."
::= { vmNotifications 13 }
vmBulkShutdown NOTIFICATION-TYPE
OBJECTS {
vmAffectedVMs
}
STATUS current
DESCRIPTION
"This notification is generated when the operational
state of one or more virtual machine has been changed to
shutdown(12) from a state other than shutdown(12).
Management stations are encouraged to subsequently poll
the subset of virtual machines of interest for
vmOperState."
::= { vmNotifications 14 }
vmBulkPaused NOTIFICATION-TYPE
OBJECTS {
vmAffectedVMs
}
STATUS current
DESCRIPTION
"This notification is generated when the operational
state of one or more virtual machines have been changed
to paused(9) from a state other than paused(9).
Management stations are encouraged to subsequently poll
the subset of virtual machines of interest for
vmOperState."
::= { vmNotifications 15 }
vmBulkSuspending NOTIFICATION-TYPE
OBJECTS {
vmAffectedVMs
}
STATUS current
DESCRIPTION
"This notification is generated when the operational
state of one or more virtual machines have been changed
to suspending(6) from a state other than suspending(6).
Management stations are encouraged to subsequently poll
the subset of virtual machines of interest for
vmOperState."
::= { vmNotifications 16 }
vmBulkSuspended NOTIFICATION-TYPE
OBJECTS {
vmAffectedVMs
}
STATUS current
DESCRIPTION
"This notification is generated when the operational
state of one or more virtual machines have been changed
to suspended(7) from a state other than suspended(7).
Management stations are encouraged to subsequently poll
the subset of virtual machines of interest for
vmOperState."
::= { vmNotifications 17 }
vmBulkResuming NOTIFICATION-TYPE
OBJECTS {
vmAffectedVMs
}
STATUS current
DESCRIPTION
"This notification is generated when the operational
state of one or more virtual machines have been changed
to resuming(8) from a state other than resuming(8).
Management stations are encouraged to subsequently poll
the subset of virtual machines of interest for
vmOperState."
::= { vmNotifications 18 }
vmBulkMigrating NOTIFICATION-TYPE
OBJECTS {
vmAffectedVMs
}
STATUS current
DESCRIPTION
"This notification is generated when the operational
state of one or more virtual machines have been changed
to migrating(10) from a state other than migrating(10).
Management stations are encouraged to subsequently poll
the subset of virtual machines of interest for
vmOperState."
::= { vmNotifications 19 }
vmBulkCrashed NOTIFICATION-TYPE
OBJECTS {
vmAffectedVMs
}
STATUS current
DESCRIPTION
"This notification is generated when one or more virtual
machines have been crashed. Management stations are
encouraged to subsequently poll the subset of virtual
machines of interest for vmOperState."
::= { vmNotifications 20 }
vmBulkBlocked NOTIFICATION-TYPE
OBJECTS {
vmAffectedVMs
}
STATUS current
DESCRIPTION
"This notification is generated when the operational
state of one or more virtual machines have been changed
to blocked(5) from a state other than blocked(5).
Management stations are encouraged to subsequently poll
the subset of virtual machines of interest for
vmOperState."
::= { vmNotifications 21 }
vmBulkDeleted NOTIFICATION-TYPE
OBJECTS {
vmAffectedVMs
}
STATUS current
DESCRIPTION
"This notification is generated when one or more virtual
machines have been deleted. Management stations are
encouraged to subsequently poll the subset of virtual
machines of interest for vmOperState."
::= { vmNotifications 22 }
-- Compliance definitions:
vmCompliances OBJECT IDENTIFIER ::= { vmConformance 1 }
vmGroups OBJECT IDENTIFIER ::= { vmConformance 2 }
vmFullCompliances MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Compliance statement for implementations supporting
read/write access, according to the object definitions."
MODULE -- this module
MANDATORY-GROUPS {
vmHypervisorGroup,
vmVirtualMachineGroup,
vmCpuGroup,
vmCpuAffinityGroup,
vmStorageGroup,
vmNetworkGroup
}
GROUP vmPerVMNotificationOptionalGroup
DESCRIPTION
"Support for per-VM notifications is optional. If not
implemented then vmPerVMNotificationsEnabled must report
false(2)."
GROUP vmBulkNotificationsVariablesGroup
DESCRIPTION
"Necessary only if vmPerVMNotificationOptionalGroup is
implemented."
GROUP vmBulkNotificationOptionalGroup
DESCRIPTION
"Support for bulk notifications is optional. If not
implemented then vmBulkNotificationsEnabled must report
false(2)."
::= { vmCompliances 1 }
vmReadOnlyCompliances MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Compliance statement for implementations supporting
only readonly access."
MODULE -- this module
MANDATORY-GROUPS {
vmHypervisorGroup,
vmVirtualMachineGroup,
vmCpuGroup,
vmCpuAffinityGroup,
vmStorageGroup,
vmNetworkGroup
}
OBJECT vmPerVMNotificationsEnabled
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT vmBulkNotificationsEnabled
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
::= { vmCompliances 2 }
vmHypervisorGroup OBJECT-GROUP
OBJECTS {
vmHvSoftware,
vmHvVersion,
vmHvObjectID,
vmHvUpTime,
vmNumber,
vmTableLastChange,
vmPerVMNotificationsEnabled,
vmBulkNotificationsEnabled
}
STATUS current
DESCRIPTION
"A collection of objects providing insight into the
hypervisor itself."
::= { vmGroups 1 }
vmVirtualMachineGroup OBJECT-GROUP
OBJECTS {
-- vmIndex
vmName,
vmUUID,
vmOSType,
vmAdminState,
vmOperState,
vmAutoStart,
vmPersistent,
vmCurCpuNumber,
vmMinCpuNumber,
vmMaxCpuNumber,
vmMemUnit,
vmCurMem,
vmMinMem,
vmMaxMem,
vmUpTime,
vmCpuTime
}
STATUS current
DESCRIPTION
"A collection of objects providing insight into the
virtual machines) controlled by a hypervisor."
::= { vmGroups 2 }
vmCpuGroup OBJECT-GROUP
OBJECTS {
-- vmCpuIndex,
vmCpuCoreTime
}
STATUS current
DESCRIPTION
"A collection of objects providing insight into the
virtual machines) controlled by a hypervisor."
::= { vmGroups 3 }
vmCpuAffinityGroup OBJECT-GROUP
OBJECTS {
-- vmCpuPhysIndex,
vmCpuAffinity
}
STATUS current
DESCRIPTION
"A collection of objects providing insight into the
virtual machines) controlled by a hypervisor."
::= { vmGroups 4 }
vmStorageGroup OBJECT-GROUP
OBJECTS {
-- vmStorageVmIndex,
-- vmStorageIndex,
vmStorageParent,
vmStorageSourceType,
vmStorageSourceTypeString,
vmStorageResourceID,
vmStorageAccess,
vmStorageMediaType,
vmStorageMediaTypeString,
vmStorageSizeUnit,
vmStorageDefinedSize,
vmStorageAllocatedSize,
vmStorageReadIOs,
vmStorageWriteIOs,
vmStorageReadOctets,
vmStorageWriteOctets,
vmStorageReadLatency,
vmStorageWriteLatency
}
STATUS current
DESCRIPTION
"A collection of objects providing insight into the
virtual storage devices controlled by a hypervisor."
::= { vmGroups 5 }
vmNetworkGroup OBJECT-GROUP
OBJECTS {
-- vmNetworkIndex,
vmNetworkIfIndex,
vmNetworkParent,
vmNetworkModel,
vmNetworkPhysAddress
}
STATUS current
DESCRIPTION
"A collection of objects providing insight into the
virtual network interfaces controlled by a hypervisor."
::= { vmGroups 6 }
vmPerVMNotificationOptionalGroup NOTIFICATION-GROUP
NOTIFICATIONS {
vmRunning,
vmShuttingdown,
vmShutdown,
vmPaused,
vmSuspending,
vmSuspended,
vmResuming,
vmMigrating,
vmCrashed,
vmBlocked,
vmDeleted
}
STATUS current
DESCRIPTION
"A collection of notifications for per-VM notification
of changes to virtual machine state (vmOperState) as
reported by a hypervisor."
::= { vmGroups 7 }
vmBulkNotificationsVariablesGroup OBJECT-GROUP
OBJECTS {
vmAffectedVMs
}
STATUS current
DESCRIPTION
"The variables used in vmBulkNotificationOptionalGroup
virtual network interfaces controlled by a hypervisor."
::= { vmGroups 8 }
vmBulkNotificationOptionalGroup NOTIFICATION-GROUP
NOTIFICATIONS {
vmBulkRunning,
vmBulkShuttingdown,
vmBulkShutdown,
vmBulkPaused,
vmBulkSuspending,
vmBulkSuspended,
vmBulkResuming,
vmBulkMigrating,
vmBulkCrashed,
vmBulkBlocked,
vmBulkDeleted
}
STATUS current
DESCRIPTION
"A collection of notifications for bulk notification of
changes to virtual machine state (vmOperState) as
reported by a given hypervisor."
::= { vmGroups 9 }
END
The MIB module in this document uses the following IANA-assigned OBJECT IDENTIFIER values recorded in the SMI Numbers registry:
Descriptor OBJECT IDENTIFIER value
---------- -----------------------
vmMIB { mib-2 TBD }
There are two objects defined in this MIB, vmPerVMNotificationsEnabled and vmBulkNotificationsEnabled, that have a MAX-ACCESS clause of read-write. Such objects may be considered sensitive or vulnerable in some network environments. The support for SET operations in a non-secure environment without proper protection can have a negative effect on the management system. It is recommended that attention be given to these objects in scenarios that DO NOT use SNMPv3 strong security, i.e. authentication and encryption. When SNMPv3 strong security is not used, these objects should have access of read-only, not read-write.
There are a number of managed objects in this MIB that may contain sensitive information. The objects in the vmHvSoftware and vmHvVersion list information about the hypervisor's software and version. Some may wish not to disclose to others which software they are running. Further, an inventory of the running software and versions may be helpful to an attacker who hopes to exploit software bugs in certain applications. Moreover, the objects in the vmTable, vmCpuTable, vmCpuAffinityTable, vmStorageTable and vmNetworkTable list information about the virtual machines and their virtual resource allocation. Some may wish not to disclose to others how many and what virtual machines they are operating.
It is thus important to control even GET access to these objects and possibly to even encrypt the values of these object when sending them over the network via SNMP. Not all versions of SNMP provide features for such a secure environment.
SNMPv1 by itself is not a secure environment. Even if the network itself is secure (for example by using IPsec), even then, there is no control as to who on the secure network is allowed to access and GET/SET (read/change/create/delete) the objects in this MIB.
It is recommended that the implementers consider the security features as provided by the SNMPv3 framework. Specifically, the use of the User-based Security Model [RFC3414] and the View-based Access Control Model [RFC3415] is recommended.
It is then a customer/user responsibility to ensure that the SNMP entity giving access to an instance of this MIB, is properly configured to give access to the objects only to those principals (users) that have legitimate rights to indeed GET or SET (change/create/delete) them.
The authors like to thank Joe Marcus Clarke, Randy Presuhn, David Black, Joel Jaeggli, Tom Petch, Andy Bierman, C. M. Heard, and Ian West for providing helpful comments during the development of this specification.
Juergen Schoenwaelder was partly funded by Flamingo, a Network of Excellence project (ICT-318488) supported by the European Commission under its Seventh Framework Programme.
| [RFC3410] | Case, J., Mundy, R., Partain, D. and B. Stewart, "Introduction and Applicability Statements for Internet-Standard Management Framework", RFC 3410, December 2002. |
| [IEEE8021-BRIDGE-MIB] | IEEE, "IEEE8021-BRIDGE-MIB", |
| [IEEE8021-Q-BRIDGE-MIB] | IEEE, "IEEE8021-BRIDGE-MIB", |
| State | Change to vmAdminState at the hypervisor or (Event) | Next state | Notification |
|---|---|---|---|
| suspended | running | resuming | vmResuming | vmBulkResuming |
| suspending | (suspend operation completed) | suspended | vmSuspended | vmBulkSuspended |
| running | suspended | suspending | vmSuspending | vmBulkSuspending |
| shutdown | shuttingdown | vmShuttingdown | vmBulkShuttingdown | |
| destroy | shutdown | vmShutdown | vmBulkShutdown | |
| (migration to other hypervisor initiated) | migrating | vmMigrating | vmBulkMingrating | |
| resuming | (resume opeartion completed) | running | vmRunning | vmBulkRunning |
| paused | running | running | vmRunning | vmBulkRunning |
| shuttingdown | (shutdown operation completed) | shutdown | vmShutdown | vmBulkShutdown |
| shutdown | running | running | vmRunning | vmBulkRunning |
| (if this state entry is created by a migration operation (*) | migrating | vmMigrating | vmBulkMigrating | |
| (deletion operation completed) | (no state) | vmDeleted | vmBulkDeleted | |
| migrating | (migration from other hypervisor completed) | running | vmRunning | vmBulkRunning |
| (migration to other hypervisor completed) | shutdown | vmShutdown | vmBulkShutdown | |
| preparing | (preparation completed) | shutdown | vmShutdown | vmBulkShutdown |
| blocked | (blocking operation completed) | (previous state) | - |
| crashed | - | - | - |
| (any) | (blocking operation initiated) | blocked | vmBlocked | vmBulkBlocked |
| (crashed) | crashed | vmCrashed | vmBulkCrashed | |
| (no state) | (preparation initiated) | preparing | - |
| (migrate from other hypervisor initiated) | shutdown (*) | vmShutdown | vmBulkShutdown |