Monitoring OpenShift Data Foundation Storage Flashcards

(51 cards)

1
Q

What is the primary objective of monitoring in OpenShift Data Foundation?

A

Verify storage health metrics by using cluster monitoring.

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2
Q

Where are the metrics and monitoring integrated in OpenShift?

A

Into the web console on the Data Foundation page on the Storage menu.

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3
Q

What does a green checkmark indicate in the OpenShift Data Foundation dashboard?

A

The cluster is healthy.

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4
Q

What does a red exclamation point indicate?

A

The degraded status.

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5
Q

Where can the Activity section be found on the OpenShift dashboard?

A

Either at the right or at the bottom of the page.

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6
Q

What can you find in the Status section of the Overview tab?

A

Storage System.

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7
Q

What tabs are available on the storage system Overview page?

A

Block and File tab and the Object tab.

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8
Q

What does the Raw Capacity section display?

A

Overall used and available cluster capacity.

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9
Q

What can you inspect in the Requested capacity section?

A

Capacity by projects, storage classes, pods, and persistent volume claims.

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10
Q

What metrics are shown in the Utilization section?

A
  • Used capacity
  • Input/output operations per second (IOPS)
  • Throughput
  • Latency
  • Recovery
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11
Q

What time blocks can the graphics in the Utilization section be filtered by?

A
  • 1 hour
  • 6 hours
  • 24 hours
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12
Q

What does the Storage efficiency section show when compression is available?

A

The compression ratio of the physically stored data compared with the size of the received data.

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13
Q

What metrics are available for the Object tab?

A
  • Object service status
  • Data resiliency
  • Performance
  • Capacity breakdown
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14
Q

How is the capacity breakdown for the object service filtered?

A

By the types of object services that are enabled in the cluster.

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15
Q

What is the primary objective of monitoring OpenShift Data Foundation Object Buckets?

A

Identify the storage metrics for monitoring the object buckets

This includes metrics related to performance, efficiency, and capacity.

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16
Q

How can you access the OpenShift Data Foundation object service dashboard?

A

Go to Storage → Data Foundation in the OpenShift web console, click the Storage Systems tab, and click ocs-storagecluster-storagesystem

This path leads to the specific storage system dashboard.

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17
Q

What tab must be clicked to view the object service dashboard?

A

Object tab

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18
Q

What providers are included in the object service dashboard’s details panel?

A

NooBaa MCG and Ceph RGW S3 storage providers

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19
Q

What overall status does the object service dashboard provide?

A

Overall status of the object service and data resilience

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20
Q

What does the storage efficiency section of the dashboard show?

A

The compression ratio and the storage savings

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21
Q

What information is included in the capacity breakdown of the storage?

A

The storage that the NooBaa MCG and Ceph RGW S3 buckets use

22
Q

What metrics regarding object buckets are displayed on the dashboard?

A

Number of object buckets and OBCs

23
Q

What does the activity section of the dashboard show?

A

Recent events

24
Q

What type of charts are available on the object service dashboard?

A

Performance charts for the NooBaa MCG and Ceph RGW storage providers

25
What does the metric NooBaa_total_usage represent?
Disk usage of NooBaa MCG object buckets ## Footnote This metric helps monitor the total storage utilized by the object buckets.
26
What is indicated by the NooBaa_providers_logical_size metric?
Disk usage of the raw data ## Footnote This metric provides insights into the original size of the stored data before any compression.
27
What does the NooBaa_providers_physical_size metric measure?
Disk usage of the compressed data ## Footnote This metric reflects the space used after data compression.
28
What does the NooBaa_providers_bandwidth_read_size metric track?
Transferred bytes on read requests ## Footnote This metric is useful for assessing read performance and bandwidth usage.
29
What is measured by the NooBaa_providers_bandwidth_write_size metric?
Transferred bytes on write requests ## Footnote This metric helps monitor the efficiency of write operations.
30
What does the NooBaa_num_objects_buckets_claims metric indicate?
Number of objects in all buckets ## Footnote This metric is crucial for understanding the total object count managed by NooBaa.
31
What does the NooBaa_providers_ops_read_num metric represent?
Number of read operations ## Footnote This metric is important for evaluating read activity and performance.
32
What is indicated by the NooBaa_providers_ops_write_num metric?
Number of write operations ## Footnote This metric helps in assessing the volume of write operations performed.
33
What does the NooBaa_bucket_used_bytes metric measure?
Used bytes for each bucket ## Footnote This metric provides a breakdown of the storage utilized within individual buckets.
34
What does the metric 'ceph_rgw_get' represent?
Number of retrieved objects from all buckets ## Footnote This metric tracks the total count of objects that have been accessed from the storage buckets.
35
What does the metric 'ceph_rgw_put' indicate?
Number of uploaded objects to all buckets ## Footnote This metric reflects the total number of objects that users have uploaded to the storage system.
36
What is measured by the 'ceph_rgw_req' metric?
Number of requests to the RADOS Object Gateway endpoint ## Footnote This metric counts all requests made to the object gateway, indicating usage levels.
37
What does 'ceph_rgw_get_b' measure?
Bytes on transferred read requests ## Footnote This metric tracks the amount of data in bytes transferred during read operations.
38
What information does 'ceph_rgw_put_b' provide?
Bytes on transferred write requests ## Footnote This metric indicates the total amount of data in bytes that has been written to the storage system.
39
What does 'ceph_rgw_qlen' refer to?
Length of queue for requests ## Footnote This metric shows how many requests are currently queued for processing.
40
What does 'ceph_rgw_qactive' signify?
Number of active requests ## Footnote This metric indicates how many requests are currently being processed by the system.
41
What does the 'ceph_rgw_failed_req' metric track?
Number of failed requests ## Footnote This metric helps in understanding the reliability and performance of the object gateway by counting failed attempts.
42
How can you access metrics in the OpenShift web console?
Go to Observe → Metrics ## Footnote This path allows users to view and manage metrics related to the system.
43
What should you do to add a metric query in the OpenShift web console?
Enter the metric in the expression field and click Add Query ## Footnote This process enables users to customize their metrics view by adding specific queries.
44
What is the next step after adding queries in the OpenShift metrics tool?
Click Run Queries ## Footnote This action executes the added queries to retrieve the requested metrics.
45
Where can you set the refresh rate of the graph in the OpenShift web console?
Upper right of the page ## Footnote This option allows users to control how often the graph updates with new data.
46
Where can you set the zoom for a given number of minutes on the OpenShift metrics graph?
Upper left of the graph ## Footnote This feature helps users focus on specific time frames for detailed analysis.
47
What feature can be used to explore metrics in the expression field?
Autocomplete feature ## Footnote This feature helps users find relevant metrics by suggesting options as they type.
48
What happens when you introduce a word in the expression field?
You get all the metrics that contain that word ## Footnote This allows for targeted searches and easier metric selection.
49
Fill in the blank: The autocomplete feature helps in exploring metrics by _______.
[suggesting options as you type]
50
True or False: The autocomplete feature only shows metrics that start with the introduced word.
False ## Footnote It shows all metrics that contain the introduced word, regardless of position.
51
What is the main purpose of the autocomplete feature in the expression field?
To assist in exploring and selecting relevant metrics easily ## Footnote This feature enhances user experience by streamlining the metric search process.