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Fix CSI initialization conflict

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CSI is used by both the kubelet and kube-controller-manager.  Both
components will initialize the csiPlugin with different VolumeHost
objects.  The csiPlugin will then assign a global variable for
the node info manager.  It is then possible that the kubelet gets
the credentials of the kube-controller-manager and that will cause
CSI to fail.
This commit is contained in:
Darren Shepherd 2019-08-30 11:22:18 -07:00 committed by Rafael Breno
parent b31fb2af18
commit 3e331cded8
1 changed files with 8 additions and 4 deletions
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12
pkg/volume/csi/csi_plugin.go
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@ -253,18 +253,22 @@ func (p *csiPlugin) Init(host volume.VolumeHost) error {
} }
// Initializing the label management channels // Initializing the label management channels
nim = nodeinfomanager.NewNodeInfoManager(host.GetNodeName(), host, migratedPlugins) localNim := nodeinfomanager.NewNodeInfoManager(host.GetNodeName(), host, migratedPlugins)
// This function prevents Kubelet from posting Ready status until CSINode // This function prevents Kubelet from posting Ready status until CSINode
// is both installed and initialized // is both installed and initialized
if err := initializeCSINode(host); err != nil { if err := initializeCSINode(host, localNim); err != nil {
return errors.New(log("failed to initialize CSINode: %v", err)) return errors.New(log("failed to initialize CSINodeInfo: %v", err))
}
if _, ok := host.(volume.KubeletVolumeHost); ok {
nim = localNim
} }
return nil return nil
} }
func initializeCSINode(host volume.VolumeHost) error { func initializeCSINode(host volume.VolumeHost, nim nodeinfomanager.Interface) error {
kvh, ok := host.(volume.KubeletVolumeHost) kvh, ok := host.(volume.KubeletVolumeHost)
if !ok { if !ok {
klog.V(4).Info("Cast from VolumeHost to KubeletVolumeHost failed. Skipping CSINode initialization, not running on kubelet") klog.V(4).Info("Cast from VolumeHost to KubeletVolumeHost failed. Skipping CSINode initialization, not running on kubelet")