feat(k8s-views-global.json): added cluster variable

[dotdc]

Pull Request

Required Fields

🔎 What kind of change is it?

• feat

🎯 What has been changed and why do we need it?

• Added the ability to filter on cluster when it's in use

Optional Fields

✔️ Which issue(s) this PR fixes?

• Linked to [enhancement] cluster variable support #15

[jkroepke]

cluster as multi-values field is not an good idea.

The if there is the same namespace on multiple clusters (e.g. kube-system, flux-system), the CPU Utilization by namespace chart shows very high values.

Instead: sum(rate(container_cpu_usage_seconds_total{image!="", cluster=~"$cluster"}[$__rate_interval])) by (namespace), use sum(rate(container_cpu_usage_seconds_total{image!="", cluster=~"$cluster"}[$__rate_interval])) by (cluster, namespace) and adjust the legend {{ cluster }} {{ namespace }} or disallow multi-value of cluster.

[dotdc]

Disabled multi for the cluster variable, as it's a less intrusive change for now.

[jkroepke]

LGTM

[dotdc]

🎉 This PR is included in version 1.1.0 🎉

The release is available on GitHub release

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