U.S. patent application number 17/446955 was filed with the patent office on 2021-12-23 for localization of potential issues to objects.
The applicant listed for this patent is Hewlett Packard Enterprise Development LP. Invention is credited to David Nellinger Adamson, Raymond Mark Cooke, Aditya Samalla.
Application Number | 20210397506 17/446955 |
Document ID | / |
Family ID | 1000005822470 |
Filed Date | 2021-12-23 |
United States Patent
Application |
20210397506 |
Kind Code |
A1 |
Adamson; David Nellinger ;
et al. |
December 23, 2021 |
LOCALIZATION OF POTENTIAL ISSUES TO OBJECTS
Abstract
In some examples, a system identifies a potential issue based on
comparing measurement data acquired at different hierarchical
levels of a computing environment. Within a hierarchical level of
the different hierarchical levels, the system determines, based on
measurement data acquired for objects in the hierarchical level,
whether the potential issue is localized to a subset of the
objects.
Inventors: |
Adamson; David Nellinger;
(Oakland, CA) ; Samalla; Aditya; (San Jose,
CA) ; Cooke; Raymond Mark; (El Granada, CA) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Hewlett Packard Enterprise Development LP |
Houston |
TX |
US |
|
|
Family ID: |
1000005822470 |
Appl. No.: |
17/446955 |
Filed: |
September 3, 2021 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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16271384 |
Feb 8, 2019 |
11113132 |
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17446955 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G06F 11/0793 20130101;
G06F 11/0751 20130101 |
International
Class: |
G06F 11/07 20060101
G06F011/07 |
Claims
1. A non-transitory machine-readable storage medium comprising
instructions that upon execution cause a system to: identify a
potential issue based on comparing measurement data acquired at
different hierarchical levels of a computing environment; and
within a hierarchical level of the different hierarchical levels,
determine, based on measurement data acquired for objects in the
hierarchical level, whether the potential issue is localized to a
subset of the objects.
2. The non-transitory machine-readable storage medium of claim 1,
wherein the different hierarchical levels comprise a level selected
from among a program level, a virtual machine level, physical
machine level, and a storage level.
3. The non-transitory machine-readable storage medium of claim 1,
wherein the instructions upon execution cause the system to: in
response to determining that the potential issue is localized to
the subset of the objects, identify the subset of the objects as
being a cause of the potential issue.
4. The non-transitory machine-readable storage medium of claim 1,
wherein the instructions upon execution cause the system to: in
response to determining that the potential issue is not localized
to any of the objects, indicate that a cause of the potential issue
is not specific to any subset of the objects.
5. The non-transitory machine-readable storage medium of claim 1,
wherein the instructions upon execution cause the system to:
compute respective localization scores for corresponding subsets of
the objects, wherein determining whether the potential issue is
localized to the subset of the objects is based on the respective
localization scores.
6. The non-transitory machine-readable storage medium of claim 1,
wherein determining whether the potential issue is localized to the
subset of the objects comprises determining that the potential
issue is localized to a plurality of subsets of the objects.
7. The non-transitory machine-readable storage medium of claim 6,
wherein the instructions upon execution cause the system to:
compute respective localization scores for the plurality of subsets
of the subjects; and rank the plurality of subsets according to the
respective localization scores.
8. The non-transitory machine-readable storage medium of claim 7,
wherein determining that the potential issue is localized to the
plurality of subsets of the objects comprises determining that the
localization scores for the plurality of subsets of the objects
each violate a criterion.
9. The non-transitory machine-readable storage medium of claim 8,
wherein the instructions upon execution cause the system to:
trigger a remediation action to address the potential issue
responsive to the ranking of the plurality of subsets of the
objects.
10. The non-transitory machine-readable storage medium of claim 1,
wherein determining that the potential issue is localized to the
subset of the objects comprises determining that a type of
measurement data for the subset of the objects matches an object
type of an object in the subset of the objects.
11. A system comprising: a processor; and a non-transitory storage
medium storing machine-readable instructions executable on the
processor to: identify a potential issue based on comparing
measurement data acquired at different hierarchical levels of a
computing environment; compute localization scores for objects
within a hierarchical level of the different hierarchical levels,
the localization scores computed based on measurement data acquired
for objects in the hierarchical level, and the localization scores
indicating a degree of association between the objects within the
hierarchical level and the potential issue; and based on the
localization scores, determine whether the potential issue is
localized to a subset of the objects.
12. The system of claim 12, wherein determining whether the
potential issue is localized to the subset of the objects comprises
determining that the potential issue is localized to a plurality of
subsets of the objects.
13. The system of claim 12, wherein the instructions upon execution
cause the system to: rank the plurality of subsets according to the
respective localization scores for the plurality of subsets.
14. The system of claim 13, wherein determining that the potential
issue is localized to the plurality of subsets of the objects
comprises determining that the localization scores for the
plurality of subsets of the objects each violate a criterion.
15. The system of claim 11, wherein the instructions upon execution
cause the system to: trigger a remediation action to address the
potential issue responsive to determining that the potential issue
is localized to the subset of the objects.
16. The system of claim 1, wherein determining that the potential
issue is localized to the subset of the objects comprises
determining that a type of measurement data for the subset of the
objects matches an object type of an object in the subset of the
objects.
17. A method performed by a system comprising a hardware processor,
comprising: receiving metrics collected for objects acquired at
different hierarchical levels of a computing environment;
identifying a potential issue based on comparing values of the
metrics acquired at the different hierarchical levels of the
computing environment; and within a hierarchical level of the
different hierarchical levels, determining, based on the values of
the metrics acquired for the objects in the hierarchical level,
whether the potential issue is localized to a subset of the
objects.
18. The method of claim 17, wherein the objects comprise an object
selected from among a program, a virtual machine, a host, and a
storage system.
19. The method of claim 17, further comprising: in response to
determining that the potential issue is localized to the subset of
the objects, triggering a remediation action to address the
potential issue.
20. The method of claim 17, further comprising: computing
respective localization scores for corresponding subsets of the
objects, wherein determining whether the potential issue is
localized to the subset of the objects is based on the respective
localization scores.
Description
BACKGROUND
[0001] A computing environment includes sensors or monitoring
agents to collect information regarding objects within the
computing environment. A "computing environment" can refer to any
arrangement that includes objects that can perform various tasks,
including processing tasks, storage tasks, and/or communication
tasks.
BRIEF DESCRIPTION OF THE DRAWINGS
[0002] Some implementations of the present disclosure are described
with respect to the following figures.
[0003] FIG. 1 is a block diagram of a computing environment and an
issue localization engine according to some examples.
[0004] FIG. 2 is a flow diagram of a process according to some
examples.
[0005] FIG. 3 is a block diagram of a storage medium storing
machine-readable instructions according to some examples.
[0006] FIG. 4 is a block diagram of a system according to some
examples.
[0007] FIG. 5 is a flow diagram of a process according to further
examples.
[0008] Throughout the drawings, identical reference numbers
designate similar, but not necessarily identical, elements. The
figures are not necessarily to scale, and the size of some parts
may be exaggerated to more clearly illustrate the example shown.
Moreover, the drawings provide examples and/or implementations
consistent with the description; however, the description is not
limited to the examples and/or implementations provided in the
drawings.
DETAILED DESCRIPTION
[0009] In the present disclosure, use of the term "a," "an", or
"the" is intended to include the plural forms as well, unless the
context clearly indicates otherwise. Also, the term "includes,"
"including," "comprises," "comprising," "have," or "having" when
used in this disclosure specifies the presence of the stated
elements, but do not preclude the presence or addition of other
elements.
[0010] Examples of computing environments include any or some
combination of the following: a cloud environment, a data center, a
storage network, a communication fabric, and so forth.
[0011] A computing environment can include a virtualized
environment that includes various objects, including hosts
(physical machines), virtual machines (VMs) that can be executed in
hosts, storage systems (a storage system can include a single
storage device or a storage array comprising a plurality of storage
devices), and/or other objects. An "object" can refer to any
physical electronic device (e.g., computers, switches, routers,
storage systems, etc.) of the computing environment, a virtual
device (e.g., a virtual machine, a container, a virtual storage
volume, etc.), a program (including machine-readable instructions),
and so forth.
[0012] To identify issues within the computing environment,
information collected by sensors or monitoring agents is analyzed
by a system. The identified issues can include faults, failures,
errors, and so forth, within the computing environment. Once an
issue is identified, the system can generate a recommendation to
address the issue. The generated recommendation can specify a
remediation action to take to address the issue.
[0013] Remediation actions can include remediation actions to be
performed by existing components in the computing environment,
and/or remediation actions that are to be performed by components
that may not yet be deployed in the computing environment. As
examples, the recommended actions can include actions pertaining to
configurations of a virtualized environment, such as configurations
of VMs. As further examples, the recommended actions can include
actions pertaining to configurations of hosts and/or storage
systems. An action pertaining to a configuration of an object can
refer to setting or adjusting a configuration of the object. For
example, if the object is a VM, the configuration of the VM can
include an amount of a physical resource (e.g., a processing
resource, a storage resource, or a communication resource)
allocated to the VM. Other example configurations of other types of
objects can be set or adjusted.
[0014] Additionally, remediation actions can include actions to
disable or stop objects within the computing environment, actions
to start objects within the computing environment, actions to
adjust a speed of operation of objects, and so forth.
[0015] A computing environment can include a large number of
objects. As a result, there can be a large amount of measurement
data collected for the large number of objects, which renders
analysis of the measurement data challenging. "Measurement data"
can refer to any information collected by a sensor or monitoring
agent for an object or a group of objects, or any other part of the
computing environment. Challenges associated with analyzing
measurement data can include recognizing patterns (to identify
issues) and localizing potential issues to specific objects of the
computing environment. As used here, localization of an issue to an
object can refer to making an assessment that the issue is caused
by the object (either individually or as part of a collection of
objects).
[0016] Examples of measurement data that can be collected from a
computing environment can include latency metrics that can be
reported by sensors or monitoring agents for VMs, hosts (i.e.,
physical machines), storage systems, programs, and any other
objects. A latency metric provides an indication of latency
associated with an object, such as a time duration to perform a
given task (e.g., a processing task, a storage task, and/or a
communication task). In other examples, measurement data can
include performance metrics that represent levels of performance of
respective objects, such as a number of operations performed by an
object in a unit time, a number of input/output (I/O) operations
performed by an object in a unit time, a depth of a queue for
buffering data during operation of an object, and so forth. Other
types of metrics can be included as part of measurement data
collected for a computing environment in other examples.
[0017] FIG. 1 is a block diagram of a computing environment 100
that includes various objects at different hierarchical levels of a
hierarchy 102, according to some examples. The hierarchy 102
includes the following hierarchical levels: a program level 104
that includes programs 106, a virtual level 108 that includes VMs
110 (and/or other virtual resources such as containers, virtual
storage volumes, etc.), a physical level 112 that includes hosts
114 (and/or other physical resources such as processors, network
interface controllers, graphics controllers, memory controllers,
etc.), and a storage level 116 that includes storage systems 118
(and/or other storage resources, such as memories, caches,
etc.).
[0018] Although specific example hierarchical levels are shown in
FIG. 1, different hierarchical levels can be provided in other
hierarchies.
[0019] Note that although FIG. 1 shows the different hierarchical
levels 104, 108, 112, and 116 as being at distinct levels, it is
noted that a hierarchical level may be contained or otherwise
overlap another hierarchical level. Thus, for example, the VMs of
the virtual level 108 may be executed within the hosts of the
physical level 112. As another example, VMs of the virtual level
108 may have disks of storage systems of the storage level 116.
[0020] A program 106 can refer to any or some combination of the
following: a boot program, an operating system, an application
program, a utility program, and so forth. A storage system 118 can
include a storage device or multiple storage devices. The storage
device can be implemented using a disk-based storage device, a
solid state storage device, a memory device, and so forth. A host
124 can be in the form of a physical machine, such as a computer, a
collection of computers, a portion of a computer, and so forth.
[0021] The computing environment 100 further includes sensors 120
and/or monitoring agents 122 to measure data relating to operation
of various objects in the various hierarchical levels of the
hierarchy 102. The computing environment 100 can also include
monitoring agents 122. A sensor 120 can refer to a hardware sensor
that can physically measure a metric. A monitoring agent 122 can
refer to machine-readable instructions that can monitor operation
of a respective object, and derive a metric based on the monitored
operation.
[0022] The sensors 120 and/or monitoring agents 122 can provide
measurement data 124 to an issue localization engine 126. The
measurement data 124 can include various metrics, including a
latency metric, a performance metric, and so forth.
[0023] As used here, an "engine" can refer to a hardware processing
circuit, which can include any or some combination of a
microprocessor, a core of a multi-core microprocessor, a
microcontroller, a programmable integrated circuit, a programmable
gate array, a digital signal processor, or another hardware
processing circuit. Alternatively, an "engine" can refer to a
combination of a hardware processing circuit and machine-readable
instructions (software and/or firmware) executable on the hardware
processing circuit.
[0024] The various objects of the computing environment, including
the programs 106, the VMs 110, the hosts 124, and the storage
systems 118 can have relationships with respect to one another. For
example, a VM 110 (or multiple VMs 110) can be executed in a host
114. A program 106 (or multiple programs 106) can be executed in a
VM 110 or in a host 114. A storage system 118 can be part of a host
114, or can be accessible by a host 114 (or multiple hosts 114) or
a VM 110 (or multiple VMs). Other relationships among objects in
the different hierarchical levels of the hierarchy 102 are also
possible. More generally, a relationship between objects can
include a containment relationship (in which a first object is
contained within a second object), a link relationship (in which a
first object is physically or logically linked to a second object),
or any other type of relationship.
[0025] The issue localization engine 126 includes a vertical
assessment logic 128 and a horizontal assessment logic 130. The
vertical assessment logic 128 and the horizontal assessment logic
130 can be implemented as portions of the hardware processing
circuit of the issue localization engine 126, or can be implemented
as machine-readable instructions executable by the issue
localization engine 126.
[0026] The vertical assessment logic 128 is used to assess
measurement data acquired for objects in the different hierarchical
levels of the hierarchy 102. The assessment performed by the
vertical assessment logic 128 can include a determination, based on
the measurement data acquired for the objects at the different
hierarchical levels, a potential issue of the computing environment
100. The vertical assessment logic 128 can compare the respective
measurement data acquired for the different hierarchical levels of
the hierarchy 102 (e.g., by comparing measurement data acquired for
the program level 104, measurement data acquired for the virtual
level 108, measurement data acquired for the physical level 112,
and measurement data acquired for the storage level 116).
[0027] As a more specific example, the measurement data can include
values of latency metrics associated with the different hierarchal
levels. For example, there can be a latency metric for the storage
level 116 (referred to as a "storage latency" for example), a
latency metric for the physical level 112 (referred to as a "host
latency" for example, a latency metric for the virtual level 108
(referred to as a "VM latency" for example), a latency metric for
the program level 104 (referred to as a "program latency" for
example), or any other type of latency metric (e.g., a network
latency metric, a total latency metric that is an aggregate of
multiple latency metrics, etc.).
[0028] The latency metric for a corresponding hierarchical level
can express the latency experienced by objects of the hierarchical
level. Thus, the vertical assessment logic 128 can determine that
the physical level and the storage level are experiencing latencies
that are comparable to one another (i.e., the latency experienced
by the physical level is within a specified range of the latency
experienced by the storage level), whereas the virtual level 108
and the program level 104 may be experiencing a low amount of
latency. Based on this determination, the vertical assessment logic
128 can conclude that a latency issue may be associated with a
communication network between the hosts 124 of the physical level
112 and the storage systems 118 of the storage level 116. The
potential issue in this example is a network delay issue.
[0029] In some cases, values of metric values reported for a first
hierarchical level may not reconcile with metric values reported
for a second hierarchical level. This may be caused by
inconsistencies in reported metric measurements from the sensors
120 and/or monitoring agents 122. For example, the sensors 120
and/or monitoring agents 122 may be experiencing faults or errors
that may prevent the sensors 120 and/or monitoring agents 122 from
properly reporting measurement data. Alternatively, noise in the
computing environment 100 can cause sensors 120 and/or monitoring
agents 122 to report unreliable measurement data. The noise can be
due to malfunctioning objects in the computing environment 100, for
example.
[0030] Inaccurate measurement data may incorrectly indicate that
the latency experienced by the virtual level 108 and the latency
experienced by the physical level 112 are relatively close to each
other, when in fact the virtual level 108 is not experiencing any
significant latency that is indicative of a potential issue with
the virtual level.
[0031] Inaccurate measurement data from the sensors 120 and/or
monitoring agents 122 can make diagnostics of potential issues
difficult or inaccurate.
[0032] In accordance with some implementations of the present
disclosure, the horizontal measurement logic 130 is able to
increase the confidence in attribution of metrics to different
objects of the different hierarchical levels of the hierarchy 102.
For example, if the vertical assessment logic 128 makes a
determination that objects of a particular hierarchical level is
the cause of a potential issue, the horizontal assessment logic 130
can perform an assessment of whether the potential issue can be
localized to a subset of the objects within the particular
hierarchical level. A subset of objects can include a single object
or multiple objects (e.g., less than all of the objects in the
particular hierarchical level). Localization of a potential issue
to a subset of objects can refer to making an assessment that the
potential issue is caused by the subset of objects.
[0033] In some examples, the assessment of whether a potential
issue is localized to a particular subset of objects includes an
assessment based on measurement data collected for the same or
similar type of objects within the hierarchical level. For example,
if a given hierarchical level includes several different types of
objects, then the assessment performed by the horizontal assessment
logic 130 is based on measurement data for objects of the same or
similar type within the given hierarchical level. For example, the
virtual level 108 can include the following different types of
virtual resources: VMs (a first type of virtual resources), virtual
storage volumes (a second type of virtual resources), and so forth.
The localization of a potential issue to a subset of objects in the
virtual level 108 can be based on measurement data collected for
the first type of objects (e.g., VMs) and/or for the second type of
objects (e.g., virtual storage volumes).
[0034] The assessment performed by the horizontal assessment logic
130 can also be referred to as horizontal comparison that attempts
to localize a potential issue to a particular subset of objects,
such as hosts, storage systems, data stores, VMs, programs, and so
forth. The horizontal comparison by the horizontal assessment logic
130 is used to verify the "signal" provided by the vertical
assessment logic 128, where the "signal" can refer to an assessment
result output by the vertical assessment logic 128. The assessment
result from the vertical assessment logic 128 can include an
indication that a particular hierarchical level (or multiple
hierarchical levels) is (are) the potential cause of a potential
issue.
[0035] As an example, if the horizontal assessment logic 130
determines that a potential latency issue is localized to a
particular host(s) 124 of the physical level 112, then that would
provide a greater confidence in the assessment that the hosts 124
of the physical level 112 are causing the latency issue, as
compared to another scenario where the horizontal assessment logic
130 is unable to localize the latency issue to any subset of the
hosts 124.
[0036] The horizontal comparison is performed based on use of a
technique that computes localization scores for respective objects
within a hierarchical level. In some examples, Eq. 1 can be used to
compute a localization score Lscore for a given object within a
hierarchical level.
Lscore = p .function. ( ScopeMetric ) n ( p .function. (
ProblemMetric ScopeMetric ) - p .function. ( ProblemMetric ) ) . (
Eq . .times. 1 ) ##EQU00001##
[0037] Eq. 1 outputs the localization scores Lscore that are based
on metric values collected for objects of a hierarchical level. The
localization score provides an indication of the significance of an
identified potential issue to a specific subset of objects in the
hierarchical level. If the localization score Lscore satisfies a
criterion (e.g., the localization score Lscore exceeds a specified
threshold), then that provides an indication that there is
sufficient localization of the potential issue to a specific subset
of objects in the hierarchical level.
[0038] In Eq. 1, the value of n is greater than 0 and less than 1.
Also, a function p( ) represents a probability. The parameter
ScopeMetric represents a condition that is to be satisfied by a
metric value to be indicative of a potential issue (e.g.,
ScopeMetric is a threshold). The parameter ProblemMetric represents
a metric value that is problematic. The probability p(ScopeMetric)
represents a probability that metric values of objects in the
overall computing environment 100 (or portion of the computing
environment 100) will satisfy the condition. The probability p
(ProblemMetric) represents a probability of problematic metric
values. The probability p(ProblemMetric|ScopeMetric) represents a
probability of problematic metric values given metric values of
objects in the overall computing environment 100 (or portion) will
satisfy the condition. As an example, if p(ProblemMetric) is low
overall for VMs in a computing environment (or portion), but p
(ProblemMetric|ScopeMetric)) (which can represent, in this example,
a probability that a VM is in a problem state given that the VM is
on a specific host) is high, the following would be indicated:
being on the specific host is predictive of a VM having the
potential issue and thus the host is worthy of further
investigation (to determine causation or correlation).
[0039] More generally, the determination of localization is based
on the relative values of p(ProblemMetric) versus
p(ProblemMetric|ScopeMetric). The larger the difference between
these values the more important the condition (represented by
ScopeMetric) is to determining the degree of the potential
issue.
[0040] Eq. 1 produces a localization score that is based on a
tradeoff between rule generality (or the relative size of a
subgroup p(ScopeMetric)) and distributional unusualness or relative
accuracy (the difference between rule accuracy p
(ProblemMetri|ScopeMetric) and default accuracy
p(ScopeMetric)).
[0041] The localization score is based on metric data collected
from an environment, and provides an indication of a significance
of an identified potential issue to a specific subset of
objects.
[0042] Note that multiple objects (or multiple subsets of objects)
within a hierarchical level can have respective localization scores
Lscore that each satisfies the criterion (e.g., the localization
scores Lscore of the multiple subsets of objects each exceeds the
specified threshold). In such cases, the localization scores Lscore
for the multiple subsets of objects can be used to rank the
multiple subsets of objects. For example, a subset of objects with
a higher localization score Lscore can be ranked higher than
another subset of objects with a lower localization score
Lscore.
[0043] The issue localization engine 126 produces an assessment
result 132 that is output to a resolution engine 134. In examples
where the issue localization engine 126 determines that the
potential issue is localized to one subset of objects, then the
assessment result 132 can include information identifying the
subset of objects. In examples where the issue localization engine
126 determines that the potential issue is localized to multiple
subsets of objects, the assessment result 132 an include ranking
information that ranks the multiple subsets of objects, where the
ranking is based on the localization scores, for example.
[0044] The resolution engine 134 can respond to the assessment
result 132 by triggering an automated remediation action to address
the potential issue. Examples of remediation actions are provided
further above.
[0045] In other examples, the resolution engine 132 can also
provide information to a user device 136 (such as a user device
associated with an administrator). The user device 136 can include
a desktop computer, a notebook computer, a tablet computer, a
smartphone, and so forth. The information provided to the user
device 136 can identify the potential issue, and object(s) within a
hierarchical level (or multiple hierarchical levels) to which the
potential issue has been localized by the issue localization engine
126. The information can be presented in a user interface of the
user device 136, to allow the user to perform an action in response
to the potential issue.
[0046] FIG. 2 is a flow diagram of a process that can be performed
by various entities shown in FIG. 1, for example. The issue
localization engine 126 receives (at 202) metric values for
respective different hierarchical levels of the computing
environment 100. The measurement data is provided by the sensors
120 and/or monitoring agents 122.
[0047] The vertical assessment logic 128 compares (at 204) the
metric values for the different hierarchical levels. For example,
the vertical assessment logic 128 compares metric values for the
program level 104 to the metric values for the virtual level 108,
compares metric values for the virtual level 108 with the metric
values for the physical level 112, compares metric values for the
physical level 112 with the metric values for the storage level
116, and so forth. Based on the comparisons, the vertical
assessment logic 128 can determine whether a potential issue is
associated with a given hierarchical level (or multiple given
hierarchical levels).
[0048] Within each of the given hierarchical level(s) identified by
the vertical assessment logic 128 as being associated with the
potential issue, the horizontal assessment logic 130 performs (at
206) a horizontal comparison to assess whether the potential issue
can be localized to a subset of the objects within the given
hierarchical level. As discussed further above, the horizontal
assessment logic 130 computes localization scores (e.g., according
to Eq. 1) for respective subsets of objects within the given
hierarchical level. The horizontal comparison performed by the
horizontal assessment logic 130 can include comparing a
localization score of a subset of objects to a specified threshold.
As an example, if the localization score exceeds the specified
threshold, then the potential issue is localized to the
corresponding subset of objects.
[0049] It is possible that the localization scores for multiple
subsets of objects exceed the threshold, in which case the
potential issue is localized to multiple objects.
[0050] The significance of a potential issue is based on
localization between types of metric values and respected types of
objects of a hierarchical level. For example, if a host-related
metric localizes to a host-related object, then that would indicate
that the corresponding issue would be more significant. This can be
based on application of a specified rule (or multiple rules). More
generally, determining that the potential issue is localized to a
subset of the objects includes determining that a type of
measurement data for the subset of the objects matches an object
type of an object in the subset of the objects. The type of
measurement data is considered to "match" an object type based on
pre-definition by an administrator, a program, or a machine, for
example.
[0051] After the horizontal comparison performed by the horizontal
assessment logic 130, the issue localization engine 126 provides
(at 208) the assessment result 132 to the resolution engine 134.
The assessment result 132 can identify one subset of objects as
being localized to the potential issue, or can identify multiple
subsets of objects as being localized to the potential issue. In
the latter case, the assessment result 132 can include a ranking of
the multiple subsets of objects, such as based on the localization
scores of the multiple subsets of objects.
[0052] The resolution engine 134 triggers (at 210) a remediation
action to address the potential issue. If the assessment result 132
includes information localizing the potential issue to a subset (or
multiple subsets) of objects, then that provides an indication to
the resolution engine 134 that the assessment made by the vertical
assessment logic 128 that the potential issue is associated with a
given hierarchical level is accurate with a high confidence. In
such a scenario, the resolution engine 134 can trigger a
remediation action to be taken.
[0053] Also, in response to determining that the potential issue is
localized to the subset of the objects, the remediation engine 134
can identify a subset of the objects as being a cause of the
potential issue. In cases where there are multiple subsets of
objects to which the potential issue is localized, then the ranking
of the multiple subsets of objects can be used by the remediation
engine 134 to identify the subset of the objects that is highest
ranked as being the cause of the potential issue.
[0054] If the assessment result 132 does not indicate that the
potential issue is localized to any subset of objects, then the
remediation engine 134 indicates that a cause of the potential
issue is not specific to any subset of the objects. Also, this may
be an indication that the assessment by the vertical assessment
logic 128 of the potential issue as being associated with a given
hierarchical level has a low confidence.
[0055] FIG. 3 is a block diagram of a non-transitory
machine-readable or computer-readable storage medium 300 storing
machine-readable instructions that upon execution cause a system to
perform various tasks. The machine-readable instructions include
potential issue identification instructions 302 to identify a
potential issue based on comparing measurement data acquired at
different hierarchical levels of a computing environment. For
example, the potential issue identification instructions 302 can be
part of the vertical assessment logic 128 of FIG. 1.
[0056] The machine-readable instructions further include issue
localization instructions 304 to, within a hierarchical level of
the different hierarchical levels, determine, based on measurement
data acquired for objects in the hierarchical level, whether the
potential issue is localized to a subset of the objects. The issue
localization instructions 304 can be part of the horizontal
assessment logic 130 of FIG. 1, for example.
[0057] FIG. 4 is a block diagram of a system 400 according to some
examples. The system 400 can be implemented using a computer or
multiple computers.
[0058] The system 400 includes a hardware processor 402 (or
multiple hardware processors). A hardware processor can include a
microprocessor, a core of a multi-core microprocessor, a
microcontroller, a programmable integrated circuit, a programmable
gate array, a digital signal processor, or another hardware
processing circuit.
[0059] The system 400 includes a storage medium 404 storing
machine-readable instructions executable on the hardware processor
402 to perform various tasks. Machine-readable instructions
executable on a hardware processor can refer to the instructions
executable on a single hardware processor or the instructions
executable on multiple hardware processors.
[0060] The machine-readable instructions include potential issue
identification instructions 406 to identify a potential issue based
on comparing measurement data acquired at different hierarchical
levels of a computing environment. For example, the potential issue
identification instructions 406 can be part of the vertical
assessment logic 128 of FIG. 1.
[0061] The machine-readable instructions further include
localization score computation instructions 408 to compute
localization scores for objects within a hierarchical level of the
different hierarchical levels, the localization scores computed
based on measurement data acquired for objects in the hierarchical
level, and the localization scores indicating a degree of
association between the objects within the hierarchical level and
the potential issue.
[0062] The machine-readable instructions further include issue
localization instructions 410 to, based on the localization scores,
determine whether the potential issue is localized to a subset of
the objects. For example, the localization score computation
instructions 408 and the issue localization instructions 410 can be
part of the horizontal assessment logic 130 of FIG. 1.
[0063] FIG. 5 is a flow diagram of a process according to some
examples. The process of FIG. 5 includes receiving (at 502) metrics
collected for objects acquired at different hierarchical levels of
a computing environment. The metrics may be collected by the
sensors 120 and/or monitoring agents 122 of FIG. 1.
[0064] The process further includes identifying (at 504) a
potential issue based on comparing values of the metrics acquired
at the different hierarchical levels of the computing environment.
The identifying can be performed by the vertical assessment logic
128 of FIG. 1, for example.
[0065] The process further includes for a hierarchical level of the
different hierarchical levels, determining (at 506), based on the
values of the metrics acquired for the objects in the hierarchical
level, whether the potential issue is localized to a subset of the
objects.
[0066] A storage medium (e.g., 300 in FIG. 3 or 404 in FIG. 4) can
include any or some combination of the following: a semiconductor
memory device such as a dynamic or static random access memory (a
DRAM or SRAM), an erasable and programmable read-only memory
(EPROM), an electrically erasable and programmable read-only memory
(EEPROM) and flash memory; a magnetic disk such as a fixed, floppy
and removable disk; another magnetic medium including tape; an
optical medium such as a compact disc (CD) or a digital video disc
(DVD); or another type of storage device. Note that the
instructions discussed above can be provided on one
computer-readable or machine-readable storage medium, or
alternatively, can be provided on multiple computer-readable or
machine-readable storage media distributed in a large system having
possibly plural nodes. Such computer-readable or machine-readable
storage medium or media is (are) considered to be part of an
article (or article of manufacture). An article or article of
manufacture can refer to any manufactured single component or
multiple components. The storage medium or media can be located
either in the machine running the machine-readable instructions, or
located at a remote site from which machine-readable instructions
can be downloaded over a network for execution.
[0067] In the foregoing description, numerous details are set forth
to provide an understanding of the subject disclosed herein.
However, implementations may be practiced without some of these
details. Other implementations may include modifications and
variations from the details discussed above. It is intended that
the appended claims cover such modifications and variations.
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