Today I made a mistake and renamed a server without removing it from the AppFabric cache cluster. This caused some trouble getting the cache service back to a running and healthy state as well as some ugly error messages in the ULS, such as:
Unexpected Exception in SPDistributedCachePointerWrapper::InitializeDataCacheFactory for usage 'DistributedLogonTokenCache' - Exception 'Microsoft.ApplicationServer.Caching.DataCacheException: ErrorCode:SubStatus:There is a temporary failure. Please retry later. (One or more specified cache servers are unavailable, which could be caused by busy network or servers. For on-premises cache clusters, also verify the following conditions. Ensure that security permission has been granted for this client account, and check that the AppFabric Caching Service is allowed through the firewall on all cache hosts. Also the MaxBufferSize on the server must be greater than or equal to the serialized object size sent from the client.). Additional Information : The client was trying to communicate with the server : net.tcp://old_server_name:22233 at Microsoft.ApplicationServer.Caching.DataCache.ThrowException(ResponseBody respBody, RequestBody reqBody) at Microsoft.ApplicationServer.Caching.DataCacheFactory.GetCacheProperties(RequestBody request, IClientChannel channel) at Microsoft.ApplicationServer.Caching.DataCacheFactory.GetCache(String cacheName) at Microsoft.SharePoint.DistributedCaching.SPDistributedCachePointerWrapper.InitializeDataCacheFactory()'.