k3s: update eviction thresholds and image GC settings for improved resource management

cli/pkg/k3s/tasks.go

@@ -195,13 +195,13 @@ func (g *GenerateK3sService) Execute(runtime connector.Runtime) error {
 	defaultKubeletArs := map[string]string{
 		"kube-reserved":           "cpu=200m,memory=250Mi,ephemeral-storage=1Gi",
 		"system-reserved":         "cpu=200m,memory=250Mi,ephemeral-storage=1Gi",
-		"eviction-hard":           "memory.available<5%,nodefs.available<10%,imagefs.available<10%",
+		"eviction-hard":           "memory.available<5%,nodefs.available<5%,imagefs.available<5%",
 		"config":                  "/etc/rancher/k3s/kubelet.config",
 		"containerd":              container.DefaultContainerdCRISocket,
 		"cgroup-driver":           "systemd",
 		"runtime-request-timeout": "5m",
-		"image-gc-high-threshold": "91",
-		"image-gc-low-threshold":  "90",
+		"image-gc-high-threshold": "96",
+		"image-gc-low-threshold":  "95",
 		"housekeeping_interval":   "5s",
 	}
 	defaultKubeProxyArgs := map[string]string{

cli/pkg/kubernetes/templates/v1beta2/kubeadm_config.go

@@ -296,8 +296,10 @@ func GetKubeletConfiguration(runtime connector.Runtime, kubeConf *common.KubeCon
 			"memory": "250Mi",
 		},
 		"evictionHard": map[string]string{
-			"memory.available": "5%",
-			"pid.available":    "10%",
+			"memory.available":  "5%",
+			"pid.available":     "10%",
+			"nodefs.available":  "5%",
+			"imagefs.available": "5%",
 		},
 		"evictionSoft": map[string]string{
 			"memory.available": "10%",
@@ -309,8 +311,8 @@ func GetKubeletConfiguration(runtime connector.Runtime, kubeConf *common.KubeCon
 		"evictionPressureTransitionPeriod": "30s",
 		"featureGates":                     FeatureGatesDefaultConfiguration,
 		"runtimeRequestTimeout":            "5m",
-		"imageGCHighThresholdPercent":      91,
-		"imageGCLowThresholdPercent":       90,
+		"imageGCHighThresholdPercent":      96,
+		"imageGCLowThresholdPercent":       95,
 	}
 
 	if securityEnhancement {