[Metricbeat] gcp: add GKE overview dashboard

[endorama]

What does this PR do?

Provide an overview dashboard for GCP GKE metricset.

Why is it important?

The newly added GCP GKE metricset has been merged without a default dashboard to show collected
metrics. This is an enhancement that allow users to immediately inspect metrics gathered through
this metricset.

Checklist

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have made corresponding change to the default configuration files
• I have added tests that prove my fix is effective or that my feature works
• I have added an entry in CHANGELOG.next.asciidoc or CHANGELOG-developer.next.asciidoc.

Author's Checklist

• [ ]

How to test this PR locally

1. Boot a development stack version 7.15.0 or from master
2. Configure metricbeat to collect gcp.gke metrics (is disabled by default in 7.15.0)
3. Setup dashboard with metricbeat setup --dashboards
4. Look at the dashboard

Related issues

• Follow up on [Metricbeat] gcp: add GKE metricset #26824
• Requires [Metricbeat] gcp: add gke metricset documentation #27613

Use cases

Screenshots

Logs

[elasticmachine]

Pinging @elastic/integrations (Team:Integrations)

[elasticmachine]

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• Start Time: 2021-09-02T10:05:40.843+0000

• Duration: 93 min 41 sec

• Commit: 1de7b6f

Test stats 🧪

Test	Results
Failed	0
Passed	9507
Skipped	2521
Total	12028

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Test stats 🧪

Test	Results
Failed	0
Passed	9507
Skipped	2521
Total	12028

[kaiyan-sheng]

Screenshot in this folder under Metricbeat is required and also reference the dashboard screenshot in GCP documentation please 😄

[endorama]

I saw that there is module.yml file in some modules where the dashboard is referenced. Should I add it?

[MichaelKatsoulis]

@endorama the dashboard looks very nice! My only concern is the panel with the CPU usage. Maybe you could mention that the value is in seconds like you have done with other units in the rest of the panels.

[endorama]

Thanks to Kaiyan comment I remembered there was missing documentation. I created #27613 to add relevant base doc. Once that is merged I'm merge this with dashboard screenshot.

Meanwhile @MichaelKatsoulis I updated the dashboard and the screenshot.

[kaiyan-sheng]

LGTM! Thanks for adding the documentation. Sorry I should have caught it in the previous PR.

[MichaelKatsoulis]

LGTM!

[kvch]

This line is not supposed to be here. If you set excludeExportDetails to false these lines are not added to the Kibana response. Did you use the export command of Beats?

[endorama]

No, as is not working at the moment for me, so I exported them via the Kibana Saved Object UI. So I (wrongly) assumed that the format was the same?

This is how I used the export command:

• pulled latest master
• mage update, mage build in x-pack/metricbeat
• "./metricbeat export dashboard -id uuid >> file.ndjson`

[mergify]

This pull request is now in conflicts. Could you fix it? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch upstream
git checkout -b xpack-gcp-gke-dashboard upstream/xpack-gcp-gke-dashboard
git merge upstream/master
git push upstream xpack-gcp-gke-dashboard

[endorama]

#27613 was merged, conflicts resolved, CI happy. Merging