SVMでAES暗号化を有効にした後にCIFSアクセスが失われる
適用対象
- ONTAP 9
- CIFS
- Advanced Encryption Standard（AES）
問題
-is-aes-encryption-enabledをコマンドcifs security modifyで有効にした後、SVMのCIFSアクセスが失われます- SVMのマシンアカウントのパスワードを変更しようとすると、以下のエラーで失敗します：
ontap95::> vserver cifs password-change -vserver <SVM>
Error: command failed: Password update failed. Reason: Kerberos Error: Invalid credentials were given.
-
-is-aes-encryption-enabledを無効にしようとする試みは、以下のエラーで失敗します：
ontap95::> vserver cifs security modify -vserver <SVM> -is-aes-encryption-enabled false
Info: In order to disable CIFS AES encryption, the password for the CIFS server machine account must be reset. Enter the username and password for the CIFS domain "DOMAIN.LOCAL".
Enter your user ID: test123
Enter your password:
Error: command failed: Password update failed. Reason: SecD Error: no server available.
Secd log以下の失敗が表示されます
[kern_secd:info:12647] .------------------------------------------------------------------------------.
[kern_secd:info:12647] | RPC FAILURE: |
[kern_secd:info:12647] | secd_rpc_ad_change_password has failed |
[kern_secd:info:12647] | Result = 0, RPC Result = 7525 |
[kern_secd:info:12647] | RPC received at Tue Sep 8 17:58:24 2020 |
[kern_secd:info:12647] |------------------------------------------------------------------------------'
[kern_secd:info:12647] Failure Summary:
[kern_secd:info:12647] Error: CIFS server password change procedure failed
[kern_secd:info:12647] [ 1 ms] Successfully connected to ip 10.216.36.39, port 88 using TCP
[kern_secd:info:12647] [ 2] Successfully connected to ip 10.216.36.39, port 88 using TCP
[kern_secd:info:12647] **[ 5] FAILURE: CIFS server could not authenticate as 'CIFS95$@DOMAIN.LOCAL': CIFS server account password does not match password stored in Active Directory (KRB5KDC_ERR_PREAUTH_FAILED)