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Fix types for response fields of kubelet api #23335

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merged 4 commits into from Jan 7, 2021
Merged

Fix types for response fields of kubelet api #23335

merged 4 commits into from Jan 7, 2021

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ChrsMark
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@ChrsMark ChrsMark commented Jan 4, 2021

What does this PR do?

This PR adjusts the types of the response fields from Kubelet stats/summary api so as to be consistent with the original types of the fields as defined on api's side: https://github.com/kubernetes/kubelet/blob/088ee84ea259bf9c445109ea75b2938dd39d2074/pkg/apis/stats/v1alpha1/types.go

Why is it important?

To avoid hitting integer overflow since we store as int64 while the api can serve values stored as uint64.
int64: -9223372036854775808 to 9223372036854775807
uint64: 0 to 18446744073709551615

Closes #19475

@ChrsMark
Fix types for response fields of kubelet api
efbd2d3 
Signed-off-by: chrismark <chrismarkou92@gmail.com>
@ChrsMark ChrsMark added review [zube]: In Review Team:Platforms Label for the Integrations - Platforms team v7.10.0 needs_reviewer PR needs to be assigned a reviewer v7.11.0 v7.12.0 labels Jan 4, 2021
@ChrsMark ChrsMark self-assigned this Jan 4, 2021
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@botelastic botelastic bot added needs_team Indicates that the issue/PR needs a Team:* label and removed needs_team Indicates that the issue/PR needs a Team:* label labels Jan 4, 2021
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elasticmachine commented Jan 4, 2021 •
edited by jenkins-beats-ci bot

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  • Build Cause: Pull request #23335 updated

  • Start Time: 2021-01-05T15:57:11.406+0000

  • Duration: 51 min 25 sec

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@ChrsMark
Fix inconsistent types
7809747 
Signed-off-by: chrismark <chrismarkou92@gmail.com>
jsoriano
jsoriano reviewed Jan 4, 2021
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Looks good! But we also have to check if we can store these uint64 numbers in ES with current mappings.

metricbeat/module/kubernetes/pod/data.go
@@ -40,7 +40,7 @@ func eventMapping(content []byte, perfMetrics *util.PerfMetricsCache) ([]common.
nodeCores := perfMetrics.NodeCoresAllocatable.Get(node.NodeName)
nodeMem := perfMetrics.NodeMemAllocatable.Get(node.NodeName)
for _, pod := range summary.Pods {
var usageNanoCores, usageMem, availMem, rss, workingSet, pageFaults, majorPageFaults int64
var usageNanoCores, usageMem, availMem, rss, workingSet, pageFaults, majorPageFaults uint64
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@jsoriano jsoriano Jan 4, 2021 •
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We are currently defining these values as long in fields.yml (with a minimum value of -2^63 and a maximum value of 2^63-1). We probably need to change the mapping to be able to store big numbers. unsigned_long is only supported since 7.10, maybe we can use double for this.

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I see, thanks for catching this! But does this mean that we can only ship it a new minor release right? Otherwise, with patch releases it might cause mapping conflicts?

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Yes, let's backport this only till 7.11.

@ChrsMark
Update fields
6aa7704 
Signed-off-by: chrismark <chrismarkou92@gmail.com>
@jsoriano jsoriano removed the v7.10.0 label Jan 5, 2021
@ChrsMark
Add changelog entry
10a046f 
Signed-off-by: chrismark <chrismarkou92@gmail.com>
@ChrsMark ChrsMark merged commit 9b7676f into elastic:master Jan 7, 2021
ChrsMark added a commit to ChrsMark/beats that referenced this pull request Jan 7, 2021
@ChrsMark
Fix types for response fields of kubelet api (elastic#23335)
7bd1179 
(cherry picked from commit 9b7676f)
@ChrsMark ChrsMark mentioned this pull request Jan 7, 2021
Merged
ChrsMark added a commit to ChrsMark/beats that referenced this pull request Jan 7, 2021
@ChrsMark
Fix types for response fields of kubelet api (elastic#23335)
f88843b 
(cherry picked from commit 9b7676f)
@ChrsMark ChrsMark mentioned this pull request Jan 7, 2021
Merged
ChrsMark added a commit that referenced this pull request Jan 7, 2021
@ChrsMark
Cherry-pick #23335 to 7.x: Fix types for response fields of kubelet a…
110333e 
…pi (#23383)
ChrsMark added a commit that referenced this pull request Jan 7, 2021
@ChrsMark
Cherry-pick #23335 to 7.11: Fix types for response fields of kubelet …
1aeedfb 
…api (#23384)
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[MetricBeat] Kubernetes module Go struct field .pods.volume.inodesFree of type int64
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