CSM: Ovladače CSI: Panika v kontejneru external-health-monitor-controller způsobí restartování řadiče ovladače CSI

Summary: Kontejner externího řadiče monitorování stavu poskytovaný Kubernetes může způsobit paniku a restartování podů řadiče ovladače CSI (Container Storage Interface).

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Symptoms

Pozorovaný problém s:
Ovladače Dell CSI: v2.1.0 a v2.2.0
csi-external-health-monitor-controller: v0.4.0

Řadič zobrazí 12 restartů:

$ kubectl get pod -n isilon
 NAME                          READY   STATUS    RESTARTS        AGE
 isilon-controller-xxxx-xxxx   5/5     Running   12 (141m ago)   32h
...

 

Pomocí příkazu -p Chcete-li získat předchozí protokoly, csi-external-health-monitor-controller container shows the following panic:


E0629 18:48:41.494845       1 runtime.go:78] Observed a panic: "invalid memory address or nil pointer dereference" (runtime error: invalid memory address or nil pointer dereference)
goroutine 200 [running]:
k8s.io/apimachinery/pkg/util/runtime.logPanic(0x184d660, 0x27951e0)
    /workspace/vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go:74 +0x95
k8s.io/apimachinery/pkg/util/runtime.HandleCrash(0x0, 0x0, 0x0)
    /workspace/vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go:48 +0x86
panic(0x184d660, 0x27951e0)
    /usr/local/go/src/runtime/panic.go:965 +0x1b9
github.com/kubernetes-csi/external-health-monitor/pkg/controller.(*NodeWatcher).deleteNode(0xc000612500, 0xc002fa3b90, 0x28, 0x0)
    /workspace/pkg/controller/node_watcher.go:275 +0x29
github.com/kubernetes-csi/external-health-monitor/pkg/controller.(*NodeWatcher).WatchNodes.func1(0xb28012007187300)
    /workspace/pkg/controller/node_watcher.go:181 +0x647
github.com/kubernetes-csi/external-health-monitor/pkg/controller.(*NodeWatcher).WatchNodes(0xc000612500)
    /workspace/pkg/controller/node_watcher.go:185 +0x4b
k8s.io/apimachinery/pkg/util/wait.BackoffUntil.func1(0xc000499d90)
    /workspace/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:155 +0x5f
k8s.io/apimachinery/pkg/util/wait.BackoffUntil(0xc000499d90, 0x1c820c0, 0xc002b10450, 0x1, 0xc000126060)
    /workspace/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:156 +0x9b
k8s.io/apimachinery/pkg/util/wait.JitterUntil(0xc000499d90, 0xdf8475800, 0x0, 0x1, 0xc000126060)
    /workspace/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:133 +0x98
k8s.io/apimachinery/pkg/util/wait.Until(0xc000499d90, 0xdf8475800, 0xc000126060)
    /workspace/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:90 +0x4d
created by github.com/kubernetes-csi/external-health-monitor/pkg/controller.(*NodeWatcher).Run
    /workspace/pkg/controller/node_watcher.go:147 +0x194
panic: runtime error: invalid memory address or nil pointer dereference [recovered]
    panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x20 pc=0x168e749]

goroutine 200 [running]:
k8s.io/apimachinery/pkg/util/runtime.HandleCrash(0x0, 0x0, 0x0)
    /workspace/vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go:55 +0x109
panic(0x184d660, 0x27951e0)
    /usr/local/go/src/runtime/panic.go:965 +0x1b9
github.com/kubernetes-csi/external-health-monitor/pkg/controller.(*NodeWatcher).deleteNode(0xc000612500, 0xc002fa3b90, 0x28, 0x0)
    /workspace/pkg/controller/node_watcher.go:275 +0x29
github.com/kubernetes-csi/external-health-monitor/pkg/controller.(*NodeWatcher).WatchNodes.func1(0xb28012007187300)
    /workspace/pkg/controller/node_watcher.go:181 +0x647
github.com/kubernetes-csi/external-health-monitor/pkg/controller.(*NodeWatcher).WatchNodes(0xc000612500)
    /workspace/pkg/controller/node_watcher.go:185 +0x4b
k8s.io/apimachinery/pkg/util/wait.BackoffUntil.func1(0xc000499d90)
    /workspace/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:155 +0x5f
k8s.io/apimachinery/pkg/util/wait.BackoffUntil(0xc000499d90, 0x1c820c0, 0xc002b10450, 0x1, 0xc000126060)
    /workspace/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:156 +0x9b
k8s.io/apimachinery/pkg/util/wait.JitterUntil(0xc000499d90, 0xdf8475800, 0x0, 0x1, 0xc000126060)
    /workspace/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:133 +0x98
k8s.io/apimachinery/pkg/util/wait.Until(0xc000499d90, 0xdf8475800, 0xc000126060)
    /workspace/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:90 +0x4d
created by github.com/kubernetes-csi/external-health-monitor/pkg/controller.(*NodeWatcher).Run
    /workspace/pkg/controller/node_watcher.go:147 +0x194 

Cause

Jedná se o známý problém v externím monitorování stavu sidecaru verze 0.4.0, který Kubernetes poskytuje a který ovladač CSI verze 2.1 a 2.2 používá:
https://github.com/kubernetes-csi/external-health-monitor/issues/100Odkaz na třetí stranu
https://github.com/kubernetes-csi/external-health-monitor/pull/101 Odkaz na třetí stranu

Tento problém byl opraven a začleněn do další verze sajdkáry externího sledování stavu verze 0.5.0. Tento soubor byl vydán 4. března 2022.

Resolution

Rozlišení:
Upgrade na ovladač CSI verze 2.3.0 nebo vyšší, který používá externí monitor stavu, verze 0.5.0 podle dokumentace k modulům kontejnerového úložiště Dell Technologies https://dell.github.io/csm-docs/
Ikona odkazu třetí strany

 

Article Properties
Article Number: 000201147
Article Type: Solution
Last Modified: 30 Jun 2026
Version:  10
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