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無効な情報を含むPTRにより、secd.conn.auth.failureまたはsecd.ldap.noServers:EMERGENCYエラーが発生します

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Category:
ontap-9
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nas
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環境

  • ONTAP 9
  • DNS PTR
  • LDAP
  • CIFS/SMB
  • NFS
  • MS-LDAP
  • AD LDAP

問題

  • LDAP 署名および/またはシーリングが有効な場合、ONTAP SVM がLDAPサーバに接続できない
  • Windows ファイル エクスプローラーでプロパティ > セキュリティ >編集 >追加から共有フォルダのアクセス許可を変更すると、「The program cannot open the required dialog box because it cannot determine whether the computer named "<hostname>" is joined to a domain. Close this message. and try again.」というエラーが表示される。
  • EMS ログのエラー:
    • secd.conn.auth.failure:notice
    • secd.ldap.noServers:EMERGENCY
    • [secd: secd.ldap.noServers:EMERGENCY]: None of the LDAP servers configured for Vserver <VServer Name> are currently accessible via the network
  • SECD:

.------------------------------------------------------------------------------.
                                 RPC FAILURE:
                       secd_rpc_gpo_get_list has failed
                        Result = 0, RPC Result = 6940
                   RPC received at Thu Feb 13 09:51:42 2020
------------------------------------------------------------------------------'
FAILURE: Unable to SASL bind to LDAP server using GSSAPI: Local error
Additional info: SASL(-1): generic failure: GSSAPI Error: Unspecified GSS failure.  Minor code may provide more information (Server not found in Kerberos database)
Unable to connect to LDAP (Active Directory) service on dc1.demo.netapp.com (Error: Local error)
No servers available for MS_LDAP_AD, vserver: 3, domain: demo.netapp.com.
Unable to make a connection (LDAP (Active Directory):DEMO.NETAPP.COM), result: 6940
Details for this error state  SPN (ldap/gc.demo.netapp.com) is incorrect (dc1.demo.netapp.com:
info : [krb5 context 0991DC00] ccselect can't find appropriate cache for server principal ldap/gc.demo.netapp.com@

  • パケットトレースによると、 
    •  TGS-REQ エラーを返します KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN
  • gethostbyname出力のLDAPサーバIP出力が一貫していません
    • [09:54:15]::*> vserver services name-service getxxbyyy gethostbyaddr -vserver svm1 -node node1 -ipaddress <LDAP_IP>
      IP address: <LDAP_IP>
      Host name: hostname1
      Alias: hostname2
       
      [09:59:12]::*> vserver services name-service getxxbyyy gethostbyaddr -vserver svm1 -node node1 -ipaddress <LDAP_IP>   
      IP address: <LDAP_IP>
      Host name: hostname2
      Alias: hostname1

  • ::*> secd conn test が AD LDAP および/または LDAP で失敗する
  • cifs domain discovered-servers show -type MS-LDAP は  MS-LDAP DC が unavailable であると示している

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