kubelet calls GetDirFsInfo(root directory) instead of using GetFsInfo…

…(root label). Reverted kubernetes#33520, and changed e2e test context to use nodefs

cluster/gce/config-default.sh

@@ -161,12 +161,7 @@ HAIRPIN_MODE="${HAIRPIN_MODE:-promiscuous-bridge}" # promiscuous-bridge, hairpin
 E2E_STORAGE_TEST_ENVIRONMENT=${KUBE_E2E_STORAGE_TEST_ENVIRONMENT:-false}
 
 # Evict pods whenever compute resource availability on the nodes gets below a threshold.
-# TODO: Get rid of the conditionals once https://github.com/kubernetes/kubernetes/issues/33444 is resolved.
-if [[ "${NODE_OS_DISTRIBUTION}" == "debian" ]]; then
-    EVICTION_HARD="${EVICTION_HARD:-memory.available<100Mi,nodefs.available<10%,nodefs.inodesFree<5%}"
-else
-    EVICTION_HARD="${EVICTION_HARD:-memory.available<100Mi,imagefs.available<10%,imagefs.inodesFree<5%}"
-fi
+EVICTION_HARD="${EVICTION_HARD:-memory.available<100Mi,nodefs.available<10%,nodefs.inodesFree<5%}"
 
 # Optional: custom scheduling algorithm
 SCHEDULING_ALGORITHM_PROVIDER="${SCHEDULING_ALGORITHM_PROVIDER:-}"

cluster/gce/config-test.sh

@@ -196,12 +196,7 @@ E2E_STORAGE_TEST_ENVIRONMENT=${KUBE_E2E_STORAGE_TEST_ENVIRONMENT:-false}
 PREPULL_E2E_IMAGES="${PREPULL_E2E_IMAGES:-true}"
 
 # Evict pods whenever compute resource availability on the nodes gets below a threshold.
-# TODO: Get rid of the conditionals once https://github.com/kubernetes/kubernetes/issues/33444 is resolved.
-if [[ "${NODE_OS_DISTRIBUTION}" == "debian" ]]; then
-    EVICTION_HARD="${EVICTION_HARD:-memory.available<100Mi,nodefs.available<10%,nodefs.inodesFree<5%}"
-else
-    EVICTION_HARD="${EVICTION_HARD:-memory.available<100Mi,imagefs.available<10%,imagefs.inodesFree<5%}"
-fi
+EVICTION_HARD="${EVICTION_HARD:-memory.available<100Mi,nodefs.available<10%,nodefs.inodesFree<5%}"
 
 # Optional: custom scheduling algorithm
 SCHEDULING_ALGORITHM_PROVIDER="${SCHEDULING_ALGORITHM_PROVIDER:-}"

cmd/kubelet/app/server.go

@@ -395,7 +395,7 @@ func run(s *options.KubeletServer, kubeDeps *kubelet.KubeletDeps) (err error) {
 	}
 
 	if kubeDeps.CAdvisorInterface == nil {
-		kubeDeps.CAdvisorInterface, err = cadvisor.New(uint(s.CAdvisorPort), s.ContainerRuntime)
+		kubeDeps.CAdvisorInterface, err = cadvisor.New(uint(s.CAdvisorPort), s.ContainerRuntime, s.RootDirectory)
 		if err != nil {
 			return err
 		}

pkg/kubelet/cadvisor/cadvisor_linux.go

@@ -40,7 +40,8 @@ import (
 )
 
 type cadvisorClient struct {
-	runtime string
+	runtime  string
+	rootPath string
 	manager.Manager
 }
 
@@ -93,7 +94,7 @@ func containerLabels(c *cadvisorapi.ContainerInfo) map[string]string {
 }
 
 // New creates a cAdvisor and exports its API on the specified port if port > 0.
-func New(port uint, runtime string) (Interface, error) {
+func New(port uint, runtime string, rootPath string) (Interface, error) {
 	sysFs, err := sysfs.NewRealSysFs()
 	if err != nil {
 		return nil, err
@@ -106,8 +107,9 @@ func New(port uint, runtime string) (Interface, error) {
 	}
 
 	cadvisorClient := &cadvisorClient{
-		runtime: runtime,
-		Manager: m,
+		runtime:  runtime,
+		rootPath: rootPath,
+		Manager:  m,
 	}
 
 	err = cadvisorClient.exportHTTP(port)
@@ -202,7 +204,7 @@ func (cc *cadvisorClient) ImagesFsInfo() (cadvisorapiv2.FsInfo, error) {
 }
 
 func (cc *cadvisorClient) RootFsInfo() (cadvisorapiv2.FsInfo, error) {
-	return cc.getFsInfo(cadvisorfs.LabelSystemRoot)
+	return cc.GetDirFsInfo(cc.rootPath)
 }
 
 func (cc *cadvisorClient) getFsInfo(label string) (cadvisorapiv2.FsInfo, error) {

test/e2e/framework/test_context.go

@@ -175,6 +175,6 @@ func RegisterNodeFlags() {
 	flag.BoolVar(&TestContext.DisableKubenet, "disable-kubenet", false, "If true, start kubelet without kubenet. (default false)")
 	// TODO: uncomment this when the flag is re-enabled in kubelet
 	//flag.BoolVar(&TestContext.CgroupsPerQOS, "cgroups-per-qos", false, "Enable creation of QoS cgroup hierarchy, if true top level QoS and pod cgroups are created.")
-	flag.StringVar(&TestContext.EvictionHard, "eviction-hard", "memory.available<250Mi,imagefs.available<10%", "The hard eviction thresholds. If set, pods get evicted when the specified resources drop below the thresholds.")
+	flag.StringVar(&TestContext.EvictionHard, "eviction-hard", "memory.available<250Mi,nodefs.available<10%,nodefs.inodesFree<5%", "The hard eviction thresholds. If set, pods get evicted when the specified resources drop below the thresholds.")
 	flag.StringVar(&TestContext.ManifestPath, "manifest-path", "", "The path to the static pod manifest file.")
 }

test/e2e_node/environment/conformance.go

@@ -99,7 +99,7 @@ func containerRuntime() error {
 	}
 
 	// Setup cadvisor to check the container environment
-	c, err := cadvisor.New(0 /*don't start the http server*/, "docker")
+	c, err := cadvisor.New(0 /*don't start the http server*/, "docker", "/var/lib/kubelet")
 	if err != nil {
 		return printError("Container Runtime Check: %s Could not start cadvisor %v", failed, err)
 	}