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NDMP 备份无法在端口 10000 上建立连接

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适用于

  • ONTAP 9
  • NDMP

问题

  • 来自 NDMP 数据管理应用程序 (DMA) 的 NDMP 请求无法连接到端口 10000。
  • 由于无法连接到端口 10000 上的 NetApp NDMP 服务器,DMA 无法配置 NDMP 主机或备份。

尝试连接到 NDMP 失败会导致 DMA 返回提示连接到 NetApp 主机失败或无法访问主机的消息。  有各种各样的 NDMP DMA,消息可能会有所不同。  以下是一些具体示例:

  • NetBackup
    • Validation of the credentials failed. Either the media servers could not be reached or the credentials are invalid. Valid credentials are required for backups to succeed.
  • Backup Exec
    • A communication failure occured when attempting to connect to this server. Some common cause for this error are: the computer name is typed incorrectly, the computer is not powered on, a Backup eec agent is not installed, or the network is improperly configured.
  • Veritas  
    • Error ndmp agent write socket error 10054 an existing connection was forcibly closed by the remote host.error ndmp backup of the client HMSI-CATNAS exited with status 41 (network connection timeout)ndmp-data connect-v3 failed , status =-1 (-1)error ndmp backup of the client HMSI-CATNAS exited with status 25 (cannot connect on socket).
  • NetWorker
    • Connecting to NDMP server ... 'ndmp.server'42572:ndmpsup: Timeout reading42573:ndmpsup: Error reading. System Error: An existing connection was forcibly closed by the remote host.42573:ndmpsup: Error reading. System Error: An operation was attempted on something that is not a socket.42605:ndmpsup: Connection to NDMP server timed out.
  • 在 NetApp 集群上,NDMP 服务正在运行,NDMP 服务器正在侦听端口 10000。

原因

在 DMA 无法连接 NetApp 系统但已验证 NDMP 已启用并在端口 10000 上侦听的情况下,这意味着端口 10000 在从 DMA 到 NetApp 集群的连接上被阻止。

解决方案

  • 对于 ONTAP 9.9.1 及更早版本的群集,NetApp NDMP 服务已在防火墙策略中启用。
  • 对于 ONTAP 9.10.1 及更高版本,DMA 配置为使用的 NetApp LIF 具有所需的 LIF 服务策略
  • 检查从 DMA 到 NetApp 系统的网络连接。
    • 从故障主机,使用 ping 或 traceroute 验证与 DMA 配置使用的 NetApp 主机名或 LIF IP 的基本连接。
    • 与网络团队接洽,以验证 LIF 与备份服务器之间的任何网络设备通过端口 10000 进行的限制性通信。 
      • 例如,检查防火墙策略,确保它们允许端口 10000 上的 NDMP 请求。  

内部参考

运行以下诊断命令来检查备份服务器是否允许通过端口 10000 访问存储

::> Set Diag

::*>systemshell -node <Node_name>sudo ipfw -ad list | grep <Back_up server IP>

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