{"record":{"id":"face4a1c2984894e","repo":"hashicorp/nomad","slug":"no-plugins-registered-for-type-s","errorCode":null,"errorMessage":"no plugins registered for type: %s","messagePattern":"no plugins registered for type: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"warning","filePath":"client/dynamicplugins/registry.go","lineNumber":261,"sourceCode":"\n\tif ptype == \"\" {\n\t\t// This error shouldn't make it to a production cluster and is to aid\n\t\t// developers during the development of new plugin types.\n\t\treturn errors.New(\"must specify plugin type to deregister\")\n\t}\n\tif name == \"\" {\n\t\t// This error shouldn't make it to a production cluster and is to aid\n\t\t// developers during the development of new plugin types.\n\t\treturn errors.New(\"must specify plugin name to deregister\")\n\t}\n\tif allocID == \"\" {\n\t\treturn errors.New(\"must specify plugin allocation ID to deregister\")\n\t}\n\n\tpmap, ok := d.plugins[ptype]\n\tif !ok {\n\t\t// If this occurs there's a bug in the registration handler.\n\t\treturn fmt.Errorf(\"no plugins registered for type: %s\", ptype)\n\t}\n\n\tinfos, ok := pmap[name]\n\tif !ok {\n\t\t// plugin already deregistered, don't send events or try re-deleting.\n\t\treturn nil\n\t}\n\n\tvar info *PluginInfo\n\tfor e := infos.Front(); e != nil; e = e.Next() {\n\t\tinfo = e.Value.(*PluginInfo)\n\t\tif info.AllocID == allocID {\n\t\t\tinfos.Remove(e)\n\t\t\tbreak\n\t\t}\n\t}\n\n\tif info != nil {","sourceCodeStart":243,"sourceCodeEnd":279,"githubUrl":"https://github.com/hashicorp/nomad/blob/482b49bf1aec006f089bcfc7e632d8f6ac303e5e/client/dynamicplugins/registry.go#L243-L279","documentation":"DeregisterPlugin in the dynamic plugin registry looks up the plugin-type map (d.plugins[ptype]) before removing a named plugin. If no map exists for that plugin type, the code comments that this indicates a bug in the registration handler and returns this error. It means deregistration was attempted for a plugin type that was never registered.","triggerScenarios":"A CSI plugin deregistration event is delivered for a ptype (e.g. 'csi-node'/'csi-controller') for which the registry has no map — normally only after an inconsistent registration/deregistration sequence, since the normal path returns nil when a plugin is simply already deregistered.","commonSituations":"Server reconnect replays deregistration events out of order; a bug in the CSI plugin registration handler; registry restarted losing its maps while events still arrive; plugin task events racing client restarts.","solutions":["Check for double or out-of-order Register/Deregister calls for the plugin; ensure registration happens before deregistration.","Restart the nomad client so the registry is rebuilt and plugin re-registers.","Inspect nomad client logs for the plugin lifecycle events to identify the ordering bug; report/fix the registration handler if reproducible.","Verify the CSI plugin task is healthy and re-emits its registration on client start."],"exampleFix":"// before: deregistering a type that was never registered\nregistry.DeregisterPlugin(dynamic.PluginTypeCSINode, allocID, name)\n// after: register first, then deregister\nregistry.RegisterPlugin(info)          // during plugin startup\n// ...later...\nregistry.DeregisterPlugin(dynamic.PluginTypeCSINode, allocID, name)","handlingStrategy":"try-catch","validationCode":"// only deregister plugin types that were registered\nif _, err := registry.Get(ptype, name); err != nil { /* not registered: skip deregister */ }","typeGuard":null,"tryCatchPattern":"if err := registry.DeregisterPlugin(ptype, allocID, name); err != nil && strings.Contains(err.Error(), \"no plugins registered for type\") {\n  // registration never happened or registry restarted; treat as idempotent no-op or re-register\n  log.Warnf(\"deregister for unregistered plugin type %s: %v\", ptype, err)\n}","preventionTips":["Always call RegisterPlugin before any possible DeregisterPlugin","Re-register plugins on client restart so registry state is rebuilt","Watch for out-of-order plugin lifecycle events after server reconnects"],"tags":["dynamic-plugins","csi","registry"],"backgroundTag":"plugin-not-registered","analyzedSha":"482b49bf1aec006f089bcfc7e632d8f6ac303e5e","analyzedAt":"2026-09-04T07:54:14.808Z","contentChangedAt":"2026-09-04T07:54:14.808Z","schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}