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faq for namespace prefixed metrics access

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Signed-off-by: YaoZengzeng <yaozengzeng@zju.edu.cn>
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YaoZengzeng 2019-05-10 15:31:10 +08:00
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@ -185,3 +185,9 @@ queries. The adapter only considers metrics with datapoints in the window
`[now-discoveryInterval, now]` (in order to only capture metrics that are `[now-discoveryInterval, now]` (in order to only capture metrics that are
still present), so make sure that your discovery interval is at least as still present), so make sure that your discovery interval is at least as
large as your collection interval. large as your collection interval.
### I get errors when query namespace prefixed metrics?
I have namespace prefixed metrics like `{ "name": "namespaces/node_memory_PageTables_bytes", "singularName": "", "namespaced": false, "kind": "MetricValueList", "verbs": [ "get" ] }`, but I get error `Error from server (InternalError): Internal error occurred: unable to list matching resources` when access with `kubectl get --raw /apis/custom.metrics.k8s.io/v1beta1/namespaces/*/node_memory_PageTables_bytes` .
Actually namespace prefixed metrics are special, we should access them with `kubectl get --raw /apis/custom.metrics.k8s.io/v1beta1/namespaces/*/metrics/node_memory_PageTables_bytes`.