[release-v3.27] Skip apiserver etcd3 healthcheck and disable profiling #8396
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k8s v1.27 enables APIServerTracing feature gate by default [1]. When newETCD3Client is constructed within newETCD3Prober, otelgrpc is added as part of the tracingOpts [2]. Even with the Noop TracerProvider, we notice growing memory usage by the opentelemetry internal int64/float64 histograms. As an extension apiserver, we don't config etcd ServerList so skip the health check. [1] https://kubernetes.io/docs/concepts/cluster-administration/system-traces/#kube-apiserver-traces [2] https://github.com/kubernetes/kubernetes/blob/bee599726d8f593a23b0e22fcc01e963732ea40b/staging/src/k8s.io/apiserver/pkg/storage/storagebackend/factory/etcd3.go#L300
marvin-tigera
added
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Have to update generated file copyright year in 86dea93 to pass the dirty check. |
matthewdupre
approved these changes
Jan 8, 2024
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Description
k8s v1.27 enables APIServerTracing feature gate by default [1]. When newETCD3Client is constructed within newETCD3Prober, otelgrpc is added as part of the tracingOpts [2]. Even with the Noop TracerProvider, we notice growing memory usage by the opentelemetry internal int64/float64 histograms. As an extension apiserver, we don't config etcd ServerList so skip the health check.
[1] https://kubernetes.io/docs/concepts/cluster-administration/system-traces/#kube-apiserver-traces
[2] https://github.com/kubernetes/kubernetes/blob/bee599726d8f593a23b0e22fcc01e963732ea40b/staging/src/k8s.io/apiserver/pkg/storage/storagebackend/factory/etcd3.go#L300
Related issues/PRs
Pick #8394 into release v3.27 branch.
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