Backport Kubernetes log level changes to reduce Kubelet log volume.

Reduce Kubelet log volume by changing frequent log messages
from INFO to DEBUG by backporting Kubernetes commit
8f08db9164b9038b2a62ad3d0290d725bc860744.

Test Plan:  Verify that the Kubelet log volume is reduced during
execution

Pass:  Verified that the Kubelet log volume is greatly reduced by
examining the daemon.log file. Previously informational messages
relating to reconcileState no longer appear at the default log level.

Story: 2009272
Task: 43858

Change-Id: Ibfb2967f5b643269203fc91d884964f93e091d34

kubernetes/kubernetes-1.21.3/centos/files/Change-log-level-to-Debug.patch

@@ -0,0 +1,65 @@
+From 8f08db9164b9038b2a62ad3d0290d725bc860744 Mon Sep 17 00:00:00 2001
+From: Rishabh Jain <rjain3@vmware.com>
+Date: Thu, 24 Jun 2021 14:23:06 +0530
+Subject: [PATCH] Change log level to Debug
+
+
+diff --git a/pkg/kubelet/cm/cpumanager/cpu_manager.go b/pkg/kubelet/cm/cpumanager/cpu_manager.go
+index 2e5b541ef01..5fd0ec9275f 100644
+--- a/pkg/kubelet/cm/cpumanager/cpu_manager.go
++++ b/pkg/kubelet/cm/cpumanager/cpu_manager.go
+@@ -375,7 +375,7 @@ func (m *manager) reconcileState() (success []reconciledContainer, failure []rec
+ 	for _, pod := range m.activePods() {
+ 		pstatus, ok := m.podStatusProvider.GetPodStatus(pod.UID)
+ 		if !ok {
+-			klog.InfoS("ReconcileState: skipping pod; status not found", "pod", klog.KObj(pod))
++			klog.V(4).InfoS("ReconcileState: skipping pod; status not found", "pod", klog.KObj(pod))
+ 			failure = append(failure, reconciledContainer{pod.Name, "", ""})
+ 			continue
+ 		}
+@@ -385,21 +385,21 @@ func (m *manager) reconcileState() (success []reconciledContainer, failure []rec
+ 		for _, container := range allContainers {
+ 			containerID, err := findContainerIDByName(&pstatus, container.Name)
+ 			if err != nil {
+-				klog.InfoS("ReconcileState: skipping container; ID not found in pod status", "pod", klog.KObj(pod), "containerName", container.Name, "err", err)
++				klog.V(4).InfoS("ReconcileState: skipping container; ID not found in pod status", "pod", klog.KObj(pod), "containerName", container.Name, "err", err)
+ 				failure = append(failure, reconciledContainer{pod.Name, container.Name, ""})
+ 				continue
+ 			}
+ 
+ 			cstatus, err := findContainerStatusByName(&pstatus, container.Name)
+ 			if err != nil {
+-				klog.InfoS("ReconcileState: skipping container; container status not found in pod status", "pod", klog.KObj(pod), "containerName", container.Name, "err", err)
++				klog.V(4).InfoS("ReconcileState: skipping container; container status not found in pod status", "pod", klog.KObj(pod), "containerName", container.Name, "err", err)
+ 				failure = append(failure, reconciledContainer{pod.Name, container.Name, ""})
+ 				continue
+ 			}
+ 
+ 			if cstatus.State.Waiting != nil ||
+ 				(cstatus.State.Waiting == nil && cstatus.State.Running == nil && cstatus.State.Terminated == nil) {
+-				klog.InfoS("ReconcileState: skipping container; container still in the waiting state", "pod", klog.KObj(pod), "containerName", container.Name, "err", err)
++				klog.V(4).InfoS("ReconcileState: skipping container; container still in the waiting state", "pod", klog.KObj(pod), "containerName", container.Name, "err", err)
+ 				failure = append(failure, reconciledContainer{pod.Name, container.Name, ""})
+ 				continue
+ 			}
+@@ -413,7 +413,7 @@ func (m *manager) reconcileState() (success []reconciledContainer, failure []rec
+ 				// was allocated.
+ 				_, _, err := m.containerMap.GetContainerRef(containerID)
+ 				if err == nil {
+-					klog.InfoS("ReconcileState: ignoring terminated container", "pod", klog.KObj(pod), "containerID", containerID)
++					klog.V(4).InfoS("ReconcileState: ignoring terminated container", "pod", klog.KObj(pod), "containerID", containerID)
+ 				}
+ 				m.Unlock()
+ 				continue
+@@ -428,7 +428,7 @@ func (m *manager) reconcileState() (success []reconciledContainer, failure []rec
+ 			cset := m.state.GetCPUSetOrDefault(string(pod.UID), container.Name)
+ 			if cset.IsEmpty() {
+ 				// NOTE: This should not happen outside of tests.
+-				klog.InfoS("ReconcileState: skipping container; assigned cpuset is empty", "pod", klog.KObj(pod), "containerName", container.Name)
++				klog.V(4).InfoS("ReconcileState: skipping container; assigned cpuset is empty", "pod", klog.KObj(pod), "containerName", container.Name)
+ 				failure = append(failure, reconciledContainer{pod.Name, container.Name, containerID})
+ 				continue
+ 			}
+-- 
+2.25.1
+

kubernetes/kubernetes-1.21.3/centos/kubernetes.spec

@@ -60,6 +60,7 @@ Patch4: kubelet-cpumanager-introduce-concept-of-isolated-CPU.patch
 Patch5: kubeadm-create-platform-pods-with-zero-CPU-resources.patch
 Patch6: enable-support-for-kubernetes-to-ignore-isolcpus.patch
 Patch7: Revert-use-subpath-for-coredns-only-for-default-repo.patch
+Patch8: Change-log-level-to-Debug.patch
 
 # It obsoletes cadvisor but needs its source code (literally integrated)
 Obsoletes:      cadvisor
@@ -854,6 +855,7 @@ install in production.
 %patch5 -p1
 %patch6 -p1
 %patch7 -p1
+%patch8 -p1
 
 #src/k8s.io/kubernetes/pkg/util/certificates
 # Patch the code to remove eliptic.P224 support