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Lower the frequency of volume plugin deprecation warning

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The warning is always logged (klog.Warningf), so make sure it's logged only
once per process. We've seen clusters where the deprecation warning was
about 20% of total logs.
This commit is contained in:
Jan Safranek 2020-11-20 14:18:43 +01:00
parent 7d72ddca6e
commit 62ecc68183
2 changed files with 21 additions and 11 deletions
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1
pkg/volume/BUILD
View File

@ -29,6 +29,7 @@ go_library(
"//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/types:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/util/errors:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/util/sets:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/util/validation:go_default_library",
"//staging/src/k8s.io/client-go/informers:go_default_library",
"//staging/src/k8s.io/client-go/kubernetes:go_default_library",

31
pkg/volume/plugins.go
View File

@ -22,6 +22,7 @@ import (
"strings"
"sync"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/klog/v2"
"k8s.io/mount-utils"
"k8s.io/utils/exec"
@ -458,11 +459,12 @@ type VolumeHost interface {
// VolumePluginMgr tracks registered plugins.
type VolumePluginMgr struct {
mutex sync.Mutex
plugins map[string]VolumePlugin
prober DynamicPluginProber
probedPlugins map[string]VolumePlugin
Host VolumeHost
mutex sync.Mutex
plugins map[string]VolumePlugin
prober DynamicPluginProber
probedPlugins map[string]VolumePlugin
loggedDeprecationWarnings sets.String
Host VolumeHost
}
// Spec is an internal representation of a volume. All API volume types translate to Spec.
@ -593,6 +595,7 @@ func (pm *VolumePluginMgr) InitPlugins(plugins []VolumePlugin, prober DynamicPlu
defer pm.mutex.Unlock()
pm.Host = host
pm.loggedDeprecationWarnings = sets.NewString()
if prober == nil {
// Use a dummy prober to prevent nil deference.
@ -689,9 +692,7 @@ func (pm *VolumePluginMgr) FindPluginBySpec(spec *Spec) (VolumePlugin, error) {
}
// Issue warning if the matched provider is deprecated
if detail, ok := deprecatedVolumeProviders[matches[0].GetPluginName()]; ok {
klog.Warningf("WARNING: %s built-in volume provider is now deprecated. %s", matches[0].GetPluginName(), detail)
}
pm.logDeprecation(matches[0].GetPluginName())
return matches[0], nil
}
@ -724,12 +725,20 @@ func (pm *VolumePluginMgr) FindPluginByName(name string) (VolumePlugin, error) {
}
// Issue warning if the matched provider is deprecated
if detail, ok := deprecatedVolumeProviders[matches[0].GetPluginName()]; ok {
klog.Warningf("WARNING: %s built-in volume provider is now deprecated. %s", matches[0].GetPluginName(), detail)
}
pm.logDeprecation(matches[0].GetPluginName())
return matches[0], nil
}
// logDeprecation logs warning when a deprecated plugin is used.
func (pm *VolumePluginMgr) logDeprecation(plugin string) {
if detail, ok := deprecatedVolumeProviders[plugin]; ok && !pm.loggedDeprecationWarnings.Has(plugin) {
klog.Warningf("WARNING: %s built-in volume provider is now deprecated. %s", plugin, detail)
// Make sure the message is logged only once. It has Warning severity
// and we don't want to spam the log too much.
pm.loggedDeprecationWarnings.Insert(plugin)
}
}
// Check if probedPlugin cache update is required.
// If it is, initialize all probed plugins and replace the cache with them.
func (pm *VolumePluginMgr) refreshProbedPlugins() {