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使用CIFS服务器受信任域中的用户通过SSH登录到集群超时

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适用场景

  • ONTAP 9.10.1及更高版本
  • SSH
  • 域通道身份验证

问题描述

  • 当CIFS服务器受信任域中的用户尝试通过SSH连接到ONTAP 集群时、身份验证超时或需要很长时间
注意 :对于与CIFS服务器域位于同一域的用户,不会显示此SSH登录超时问题描述。
  • EMS日志显示:
cluster-01 ALERT security.invalid.login: Failed to authenticate login attempt to Vserver: cluster, username: <trusted_domain>\<user>, application:  ssh.
cluster-01 ERROR sshd.loginGraceTime.expired: Timeout before password authentication for remote host 10.xx.xx.xx.
  • 用于域通道的数据SVM的"cis domain trust show -vserver <svm> svm"将显示受信任域。主域为NASSLAB.local 、受信任域为 INDIAB.local。

cdot_vsim_9_8::> cifs domain trusts show -vserver vs1
  Node: cdot_vsim_9_8-01
Vserver: vs1
Home Domain           Trusted Domains
------------------------------ ------------------------------------------------
NASLAB.LOCAL           INDIA.NASLAB.LOCAL, BLR.NASLAB.LOCAL,
                INDIALAB.LOCAL, NASLAB.LOCAL

  • 在配置的3个DNS服务器中、前2个DNS服务器未响应srv查找查询。
  • ONTAP 未缓存受信任域DC、从而导致向DNS服务器发送了大量DNS查询。

 

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