RHOCP 4.x の machine-config-controller との同期エラーにより、MachineConfigPool マスター/ワーカーのパフォーマンスが低下しない

Issue

• ClusterOperator machine-config のパフォーマンスが低下しました。

NAME            VERSION  AVAILABLE  PROGRESSING  DEGRADED  SINCE
machine-config  4.7.33   False      False        True      2h33m

• Machine-config-controller は、Kubernetes サービス IP に到達できません。

2022-04-14T18:22:52.392147909Z E0414 18:22:52.392034       1 leaderelection.go:325] error retrieving resource lock openshift-machine-config-operator/machine-config-controller: Get "https://172.30.0.1:443/api/v1/namespaces/openshift-machine-config-operator/configmaps/machine-config-controller": dial tcp 172.30.0.1:443: connect: no route to host
2022-04-14T18:23:36.682144465Z E0414 18:23:36.682056       1 leaderelection.go:325] error retrieving resource lock openshift-machine-config-operator/machine-config-controller: Get "https://172.30.0.1:443/api/v1/namespaces/openshift-machine-config-operator/configmaps/machine-config-controller": dial tcp 172.30.0.1:443: connect: no route to host
2022-04-14T18:24:25.896102968Z E0414 18:24:25.896020       1 leaderelection.go:325] error retrieving resource lock openshift-machine-config-operator/machine-config-controller: Get "https://172.30.0.1:443/api/v1/namespaces/openshift-machine-config-operator/configmaps/machine-config-controller": dial tcp 172.30.0.1:443: connect: no route to host

• Kube-apiserver は、以下のログをストリーミングしています。

2022-04-14T15:39:47.249887073Z E0414 15:39:47.249722      19 cacher.go:420] cacher (*unstructured.Unstructured): unexpected ListAndWatch error: failed to list maistra.io/v1, Kind=ServiceMeshControlPlane: conversion webhook for maistra.io/v2, Kind=ServiceMeshControlPlane failed: Post "https://maistra-admission-controller.openshift-operators.svc:443/convert-smcp?timeout=30s": service "maistra-admission-controller" not found; reinitializing...
2022-04-14T15:39:48.277442267Z E0414 15:39:48.277327      19 cacher.go:420] cacher (*unstructured.Unstructured): unexpected ListAndWatch error: failed to list maistra.io/v1, Kind=ServiceMeshControlPlane: conversion webhook for maistra.io/v2, Kind=ServiceMeshControlPlane failed: Post "https://maistra-admission-controller.openshift-operators.svc:443/convert-smcp?timeout=30s": service "maistra-admission-controller" not found; reinitializing...
2022-04-14T15:39:49.283428126Z E0414 15:39:49.283322      19 cacher.go:420] cacher (*unstructured.Unstructured): unexpected ListAndWatch error: failed to list maistra.io/v1, Kind=ServiceMeshControlPlane: conversion webhook for maistra.io/v2, Kind=ServiceMeshControlPlane failed: Post "https://maistra-admission-controller.openshift-operators.svc:443/convert-smcp?timeout=30s": service "maistra-admission-controller" not found; reinitializing..